The assembly of 1,4-benzenedicarboxylic acid (H2bdc), 4,4?bipyridine (4,4?bipy), trimethyltin chloride and MnBr24H2O in hydrothermal conditions gave rise to a hydrogen-bonded three-dimensional complex {[Mn(4,4?bipy)4H...The assembly of 1,4-benzenedicarboxylic acid (H2bdc), 4,4?bipyridine (4,4?bipy), trimethyltin chloride and MnBr24H2O in hydrothermal conditions gave rise to a hydrogen-bonded three-dimensional complex {[Mn(4,4?bipy)4H2O](bdc)}n which has been characterized by single- crystal X-ray diffraction. The complex crystallizes in the monoclinic system, space group P2/n with a = 7.0001(2), b = 11.5540(3), c = 11.4192(1) ? = 101.754(2)? V = 904.21(4) 3, Z = 2, C18H20MnN2O8, Mr = 447.30, Dc = 1.643 g/cm3, F(000) = 462 and m(MoK? = 0.783 mm-1. The final R and wR are 0.0499 and 0.1301, respectively for 1335 observed reflections with I ≥ 2(I). The Mn (Ⅱ) is six-coordinated in a distorted octahedral geometry. 4,4?Bipyridine in a m-bridge mode links [Mn(H2O)4]2+ into a linear cation chain. bdc acts as a counter anion and links the linear chains into a three-dimensional structure through hydrogen bonds.展开更多
A manganese(Ⅱ) complex (tataH)2[Mn(pydc)2]·4H2O (C20H28MBN14O12, Mr = 711.50, tata = 2,4,6-triamino-1,3,5-triazine, pydcH2 = pyridine-2,6-dicarboxylic acid) has been synthesized and its crystal structure...A manganese(Ⅱ) complex (tataH)2[Mn(pydc)2]·4H2O (C20H28MBN14O12, Mr = 711.50, tata = 2,4,6-triamino-1,3,5-triazine, pydcH2 = pyridine-2,6-dicarboxylic acid) has been synthesized and its crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group P1^-, with a = 9.9847(3), b = 10.9813(3), c = 15.2616(5)A, a = 101.5310(10), β = 90.2610(10), γ = 116.4600( 10)% V = 1459.44(8)A^3, Z = 2, Dc = 1.619 g/cm^3,μ = 0.539 mm^-1, F(000) = 734, the final R = 0.0292 and wR = 0.0745. In the crystal the Mnn atom is six-coordinated by four carbonyl oxygen atoms and two pyridine nitrogen atoms from two tridentate pydc ligands to furnish a distorted octahedral geometry. The complex shows the A…D…D'…A' H-bonded tetramer. The molecules are packed in a three-dimensional framework structure by the combination of O-H…O, N-H…O and N-H…N hydrogen bonds between (tataH)^+, [Mn(pydc)2]^2- and crystal water.展开更多
The title compound [Mn(O2CMe)2(phen)2] (phen = 1,10-phenanthroline) 1 has been synthesized and structurally determined by single-crystal X-ray diffraction. The crystal is of orthor- hombic, space group Pbcn, wit...The title compound [Mn(O2CMe)2(phen)2] (phen = 1,10-phenanthroline) 1 has been synthesized and structurally determined by single-crystal X-ray diffraction. The crystal is of orthor- hombic, space group Pbcn, with a = 12.554(4), b = 10.168(3), c = 17.704(5)A, V= 2259.7(12)A^3 Z = 4, C28H22MnN4O4, Mr= 533.44, Dc= 1.568 g]cm^3, F(000) = 1100, Rint = 0.0242, T= 293(2) K and p = 0.631 mm^-1. The final R = 0.0687 and wR = 0.1960 for 2046 observed reflections with I 〉 20(/). The structure of the complex consists of one Mn(II) core coordinated by two bidentate-bound CH3COO^- groups and two η^2-phen groups forming an eight-coordinate geometrical configuration.展开更多
The title compound, {[MnL2·(2,2'-bipy)-H2O]-(HL)}, has been synthesized (HL = p-methoxybenzoic acid, 2,2'-bipy = 2,2'-bipyridine) by the reaction of MnCl2-6H2O with p-methoxybenzoic and 2,2'-bipyridine ...The title compound, {[MnL2·(2,2'-bipy)-H2O]-(HL)}, has been synthesized (HL = p-methoxybenzoic acid, 2,2'-bipy = 2,2'-bipyridine) by the reaction of MnCl2-6H2O with p-methoxybenzoic and 2,2'-bipyridine in an alcohol-water solution. It crystallizes in the tricfinic system, space group PI with α = 10.1138(5), b = 11.2811(5), c = 16.2210(8) A, α = 77.5920(10),β = 72.1890(10), γ = 66.2320(10)°, Mr = 683.56, V=1603.65(13) A3, Z= 2, Dc = 1.416 g/cm^3, F(000) = 710,μ = 0.473 mm^-1, the final R = 0.0619 and wR = 0.1571 for 4724 observed reflections with I 〉 20(I). The structure determined demonstrated that it is an isomeric modification of the structure reported before. The Mn atom is six-coordinated by two N and four O atoms, forming a distorted octabedral geometry. All Mn-O and Mn-N distances range from 2.113(3)-2.410(3) A. There also exists a dissociative p-methoxybenzoic acid beside the octahedron.展开更多
Two zinc(Ⅱ) compounds, [Zn(L)(H2O)2]n 1 and [Zn(4,4'-bpy)(H2O)4](L) 2 (H2L = trans,trans-1,3 butadiene 1,4-dicarboxylic acid), were synthesized by hydrothermal methods and characterized by single-cryst...Two zinc(Ⅱ) compounds, [Zn(L)(H2O)2]n 1 and [Zn(4,4'-bpy)(H2O)4](L) 2 (H2L = trans,trans-1,3 butadiene 1,4-dicarboxylic acid), were synthesized by hydrothermal methods and characterized by single-crystal X-ray diffraction analyses. Compound 1 crystallizes in monoclinic, space group C2/c with a=15.4970(16), b = 5.4976(6), c = 10.7113(12) A, β=96.298(6)°, C6H8O6Zn, Mr = 241.50, V = 907.06(17) A^3, Z = 4, D, = 1.768 g/cm^3, F(000) = 488,μ = 2.703 mm^-1, S = 1.060, the final R = 0.0256 and wR = 0.0660 for 968 observed reflections with Ⅰ 〉 2σ(Ⅰ). Compound 2 crystallizes in triclinic, space group P1^- with a = 6.915(2), b = 7.166(2), c = 10.363(3) A, α = 73.250(4), β = 84.429(4), γ = 61.605(3)°, C16H2ON2O8Zn, Mr = 433.70, V = 432.1 (2) A^3, Z = 1, D, = 1.667 g/cm^3, F(000) = 224 and μ= 1.471 mm^-1, S = 1.118, the final R = 0.0486 and wR = 0.1077 for 1352 observed reflections with Ⅰ〉 2σ(Ⅰ). Upon using the assembly strategy of combination of coordination polymer chains with intermolecular hydrogen bonds, three-dimensional frameworks of complexes 1 and 2 were formed.展开更多
The title compound, [Mn4O2(O2CMe)6(MeOH)2(dbm)2]·2MeCOOH·2CH2Cl2 (Hdbm = dibenzoylmethane), has been synthesized and structurally determined by single-crystal X-ray diffraction. The crystal belongs t...The title compound, [Mn4O2(O2CMe)6(MeOH)2(dbm)2]·2MeCOOH·2CH2Cl2 (Hdbm = dibenzoylmethane), has been synthesized and structurally determined by single-crystal X-ray diffraction. The crystal belongs to triclinic, space group P/, with a = 10.729(3), b = 12.269(3), c = 13.085(4) A, a = 106.367(3),β = 107.643(2), γ = 94.771(2)°, V = 1547.9(7) A^3, Z = 1, C50H64Cl4Mn4O24, Mr= 1410.57, Dc= 1.513 g/cm^3, F(000) = 724, Rint = 0.0147, T= 293(2) K and p = 1.046 mm ^-1. The final R = 0.0359 and wR = 0.0938 for 5791 observed reflections with 1 〉 2σ(/). The structure of the complex consists of one [Mn4(μ3-O)2]^8+ core with four coplanar Mn atoms disposed in an extended "butterfly-like" arrangement and two O atoms triply bridging each "wing", and the peripheral ligation is provided by six by-MeCO2^-, two terminal ,μ2-dbm- groups at the two ends of the molecule, and two MeOH molecules on the central Mn atoms, lntermolecular O…H-O hydrogen bonding interactions are found within the structure of the compound.展开更多
A novel binuclear complex ([Cu^2(μ2-shed)(hshed)].(CIO4),H2O, h2shed = N-salicylidene-N'-(2-hydroxyethyl)ethylenediamine) has been synthesized and structurally characterized by X-ray diffraction analysis. ...A novel binuclear complex ([Cu^2(μ2-shed)(hshed)].(CIO4),H2O, h2shed = N-salicylidene-N'-(2-hydroxyethyl)ethylenediamine) has been synthesized and structurally characterized by X-ray diffraction analysis. It crystallizes in monoclinic, space group P21/c with a = 12.511(10), b = 15.750(12), c = 14.281 (12) A, β = 100.564(14)°, C22H31CIN4O9Cu2, Mr = 658.04, V = 2766(4) A^3, Z = 4, Dc = 1.580 g/cm^3,μ(MoKα = 1.689 mm^-1, F(000) = 1352, the final R = 0.0528 and wR = 0.1433 for 4880 independent reflections with Rint = 0.0577. The complex is a binuclear copper compound, and two Cu(Ⅱ) ions in the binuclear cation are in different coordination environments. The Cu(1) ion adopts a distorted square pyramidal geometry (x = 0.22) with four donor atoms (N2O2) of the ligand in the basal plane, and one hydroxyl oxygen atom with protonated form occupying the apical position. The Cu(2) ion assumes the geometry of a distorted square plane with four donor atoms (N2O2) of the ligand. The Cu...Cu separation is 3.103 A,. In addition, N-H…O and C-H…O intermolecular hydrogen bonding interactions link these binuclear cations into a quasi one-dimensional chain along the a axis.展开更多
The reaction of 4-hydroxybenzoic acid (H2L),4, 4-diaminodiphenylmethane (DADPM) and Cd(NO3)2?H2O in methane/water gave rise to a seven-coordinate Cd(Ⅱ) complex [Cd2(HL)4(H2O)6]?H2O which has been characterized by sin...The reaction of 4-hydroxybenzoic acid (H2L),4, 4-diaminodiphenylmethane (DADPM) and Cd(NO3)2?H2O in methane/water gave rise to a seven-coordinate Cd(Ⅱ) complex [Cd2(HL)4(H2O)6]?H2O which has been characterized by single-crystal X-ray diffraction. The complex crystallizes in the orthorhombic system, space group Pna21 with unit cell parameters: a = 10.3352(3), b = 12.0481(3), c = 28.2016(1) ? V = 3511.65(13) 3, Z = 4, C28H36Cd2O20, Mr = 917.37, Dc = 1.735 g/cm3, F(000) = 1840, (MoK? = 1.29mm-1. The final R and wR are 0.0536 and 0.1086 for 4898 observed reflections with I ≥ 4(I). The Cd(Ⅱ) is seven-coordinated in a distorted pentagonal bipyramidal geometry. The inter-molecular hydrogen bonds lead to the formation of a two-dimensional layer structure.展开更多
The title complex [Cu(L)2] (HL=4-salicylideneamino-3,5-dimethanol-1,2,4-triazole) was synthesized by the reaction of Cu(CH3COO)22H2O with 4-salicylideneamino-3,5-dimethanol- 1,2,4-triazole in the methanol. The single-...The title complex [Cu(L)2] (HL=4-salicylideneamino-3,5-dimethanol-1,2,4-triazole) was synthesized by the reaction of Cu(CH3COO)22H2O with 4-salicylideneamino-3,5-dimethanol- 1,2,4-triazole in the methanol. The single-crystal X-ray study reveals that the compound crystallizes in monoclinic, space group P21/n with a = 11.746(5), b = 8.145(3), c = 12.786(5) ? b = 106.64(1), V = 1172(1) ?, Z = 2, Dc = 1.581 g/cm3, m = 0.989 mm-1, F(000) = 574, C22H22Cu- N8O6, Mr = 558.02, T = 293(2) K, R = 0.0394 and Rw = 0.0835 for 2376 observed reflections with I > 2s(I). The complex comprises a four-coordinated copper(II) center, with an N2O2 planar coordi- nation environment. The molecules are connected by hydrogen bonds to form one-dimensional chains which are further linked to form a two-dimensional plane.展开更多
The title compound, trans-bis(acesulfamato-O)tetraaquazinc(Ⅱ) (I, C8H16N2O12S2Zn), crystallizes in the triclinic system, space group P1 with a = 5.1638(5), b = 8.5338(9), c = 9.9583(9)A, α = 74.325(8),...The title compound, trans-bis(acesulfamato-O)tetraaquazinc(Ⅱ) (I, C8H16N2O12S2Zn), crystallizes in the triclinic system, space group P1 with a = 5.1638(5), b = 8.5338(9), c = 9.9583(9)A, α = 74.325(8), β = 81.112(7), γ = 75.800(8)°, V= 407.77(7) A3, Z = 1, F(000) = 236, Rint = 0.085, T= 296 K, the final R = 0.029 and wR = 0.078 for 1832 observed reflections with I〉 2σ(0. The ZnⅡcentre resides on a centre of symmetry and has a distorted octahedral geometry. The basal plane is defined by two carbonyl O atoms of two monodentate trans-oriented acesulfamato ligands and two trans-aqua ligands. The axial positions in the octahedron are occupied by two trans-aqua ligands. Intermolecular O-H…O hydrogen bonds produce R22(8) and R22(16) rings, which lead to two- dimensional polymeric chains.展开更多
The single crystals of the azo copper(Ⅱ)-complex have been obtained from the solution of the compound dissolved in the ethanol by slow evaporation at room temperature. The structure was successfully determined by s...The single crystals of the azo copper(Ⅱ)-complex have been obtained from the solution of the compound dissolved in the ethanol by slow evaporation at room temperature. The structure was successfully determined by single-crystal X-ray diffraction. The crystal is of triclinic system, space group P1 with a = 7.8843(12), b = 11.5998(17), c = 13.955(2) A, α = 112.214(2), β = 95.105(2), γ = 97.616(2)o, V = 1157.6(3) A^3, Mr = 586.97, Z = 2, F(000) = 600, Dc = 1.684 g/cm^3, μ(MoKα) = 1.120 mm-1, the final R = 0.0419 and wR = 0.1259 for 3475 observed reflections with I 〉 2σ(I). The coordination around copper(II) atom is a slightly distorted square-pyramidal geometry involving [Cu(C16H11N4O8S)(OH)H2O]-cation, one Na+ anion and one C2H5OH solvate molecule. The hydrogen bonds and π···π stacking interactions extend the complex into a three-dimensional framework.展开更多
The title complex Mn(HL)4(NCS)2(CH3CH2OH)2 has been achieved via selfassembly by incorporating manganese(Ⅱ) into pyridine-3-carbaldehyde thiosemicarbazonate ligand, and characterized by elemental analysis and...The title complex Mn(HL)4(NCS)2(CH3CH2OH)2 has been achieved via selfassembly by incorporating manganese(Ⅱ) into pyridine-3-carbaldehyde thiosemicarbazonate ligand, and characterized by elemental analysis and single-crystal X-ray diffraction study. The crystal crystallizes in triclinic, space group PI^-, with a = 8.896(2), b = 9.530(2), c = 14.520(4)°A, α = 87.035(4), β= 88.112(4), γ= 69.434(4)°, V= 1150.9(5)°A^3, Z = 1, Mr = 984.17, Dc = 1.420 g/cm^3,μ(MoKα) = 0.612 mm^-1, F(000) = 511, the final R = 0.0574 and wR = 0.1547 for 2855 observed reflections with I〉2σ(I). The complex contains one six-coordinated manganese ion connected by two thiosemicarbazide ligands, in which the thiosemicarbazone ligand acts as a monodentate ligand and coordinates to the center metal atoms via the pyridyl nitrogen atoms, two ethanol molecules and two isothiocyanic anions to give rise to a mononuclear structure. The coordination of a potentially tridentate thiosemicarbazone in manganese(Ⅱ) complex without using its sulfur and imine nitrogen sites is unusual. Hydrogen bonds existing in the complex link the different components to stabilize the crystal structure.展开更多
The reaction of 3-(3-pyridyl)acrylic acid (H(3-PYA)) with Co(NO3)2.6H2O or MnCl2.4H2O yielded two new complexes: [Co(3-PYA)2(H2O)4.H2O] 1 and [Mn(3-PYA)2(H2O)4] 2. Complex 1 crystallizes in monoclinic...The reaction of 3-(3-pyridyl)acrylic acid (H(3-PYA)) with Co(NO3)2.6H2O or MnCl2.4H2O yielded two new complexes: [Co(3-PYA)2(H2O)4.H2O] 1 and [Mn(3-PYA)2(H2O)4] 2. Complex 1 crystallizes in monoclinic, space group C2/c with a = 9.9473(12), b = 13.7227(16), c = 14.7376(18) A, β = 99.043(2)°, V = 1986.7(4) A^3, Z = 4, Dc= 1.549 g/cm^3,μ = 0.921 mm^-1, F(000) = 964, R = 0.0786 and wR = 0.1443. Six types of hydrogen bonds and π-π packing interactions connect the mononuclear units [Co(Ⅱ)(3-PYA)2(H2O)4·H2O] into a three-dimensional supramolecular architecture. Complex 2 crystallizes in monoclinic, space group P21/n with a = 11.3630(16), b = 7.0346(10), c = 12.1365(18) A, β = 112.545(3)°, V = 896.0(2) A^3, Z = 2, D, = 1.997 g/cm^3,μ = 0.785 mm^-1, F(000) = 438, R = 0.0787 and wR = 0.1550. The discrete entity Mn(Ⅱ)(3-PYD)2(H2O)4 is extended into a 3-D supramolecular architecture by four kinds of hydrogen bonds.展开更多
A novel MnⅡ complex [{Mn(IBG)(2,2'-bipy)(H2O)}·4H2O]n 1(H2IBG=isophtha-loylbisglycine and 2,2'-bipy = 2,2'-bipyridine) has been synthesized and characterized by singlecrystal X-ray diffraction,element...A novel MnⅡ complex [{Mn(IBG)(2,2'-bipy)(H2O)}·4H2O]n 1(H2IBG=isophtha-loylbisglycine and 2,2'-bipy = 2,2'-bipyridine) has been synthesized and characterized by singlecrystal X-ray diffraction,elemental analysis,IR spectra and thermogravimetric analysis.It crystallizes in monoclinic,space group P21/n,with a=13.667(2),b=14.045(2),c=14.195(2),β=101.483(3)°,V=2670.1(7)3,Z=4,C22H26N4O11Mn,Mr=577.41,Dc=1.436 g/cm3,F(000)=1196.0,μ(MoKα)=0.558 mm-1,the final R=0.0578 and wR=0.1460 for 2974 observed reflections with I2σ(I).In the structure,the MnⅡ atom is coordinated in a distorted octahedral environment arranged by one water molecule,one 2,2'-bipy ligand and two IBG ligands.展开更多
The two title complexes, [Cd{3,5-(NO2)2sal}(2,2′-bipy)]n 1 and [Mn{3,5- (NO2)2sal}(2,2′-bipy)]n 2 (3,5-(NO2)2sal = 3,5-dinitrosalicylate, 2,2'-bipy = 2,2′-bipyridine), were synthesized by the hydrother...The two title complexes, [Cd{3,5-(NO2)2sal}(2,2′-bipy)]n 1 and [Mn{3,5- (NO2)2sal}(2,2′-bipy)]n 2 (3,5-(NO2)2sal = 3,5-dinitrosalicylate, 2,2'-bipy = 2,2′-bipyridine), were synthesized by the hydrothermal reaction and structurally characterized. Complex 1 crystallizes in triclinic, space group P1, a = 5.581(4), b = 12.071(8), c = 12.88(1)A, α= 92.10(3),β= 96.73(3), γ = 102.02(2)°, C17H10N407Cd, Mr = 494.69, V= 841(1)A3, Z = 2, Dc = 1.954 g/cm3, F(000) = 488, μ= 1.353 mm^-1, R = 0.0248 and wR = 0.0761. Complex 2 crystallizes in monoclinic with space group P21/c, a = 8.604(3), b = 23.88(1), c = 8.894(3) A, β = 102.45(1)°, C17H10N407Mn, Mr = 437.23, V= 1785(1) A3, Z=.4, Dc = 1.627 g/cm3, F(000) = 884, μ = 0.791 mm^-1, R = 0.0471 and wR = 0.1250. Complex 1 possesses an infinite 1D polymeric chain structure consisting of the repeated basic four-membered ring units (Cd2O2) and eight-membered ring units (CdOCO)2. Compound 2displays a linear 1D chain through Mn(Ⅱ) atoms and bridging carboxylate groups of 3,5-dinitrosalicylic acid ligands with the Mn…Mn separation of 4.472(2)A. The fluorescence properties and cyclic voltammetric behaviors of the complexes are also reported.展开更多
A new Cu(Ⅱ) complex [Cu(4-cba)(1,10-phen)(H2O)2](NO3) (4-Hcba = 4-cyanobenzoic acid) has been synthesized by solvothermal reaction in an ethanol/water mixed solution at 100 ℃ and structurally characteriz...A new Cu(Ⅱ) complex [Cu(4-cba)(1,10-phen)(H2O)2](NO3) (4-Hcba = 4-cyanobenzoic acid) has been synthesized by solvothermal reaction in an ethanol/water mixed solution at 100 ℃ and structurally characterized by single-crystal X-ray diffraction. Crystallographic data: C20H16CuN4O7, Mr= 487.91, triclinic, space group PI, a = 7.8420(2), b = 9.1070(2), c = 15.1140(6) A, a = 76.889(9), β = 81.332(11), γ = 74.844( 11)°, V = 1009.89(5) A^3, Z = 2, Dc = 1.605 g/cm^3, F(000) = 498, μ = 1.134 mm^-1, the final R = 0.0379 and wR = 0.0865 for 2977 observed reflections with 1 〉 2σ(Ⅰ). The Cu(Ⅱ) atom is coordinated by two terminal water molecules, one chelating 1,10-phen molecule and one monodentate 4-cba ligand to form a slightly distorted square pyramid. The title complex molecules are connected through hydrogen bonds and π-π stacking interactions to generate a 2D layered network. The thermogravimetric analysis of the title complex has also been discussed.展开更多
A novel coordination polymer [{Cd(hmbdc)(H20)3}-2H20],, (hmbdc = 5-hydroxyisophthalic acid) has been synthesized and characterized by elemental analysis, IR spectra and single-crystal X-ray diffraction. The crys...A novel coordination polymer [{Cd(hmbdc)(H20)3}-2H20],, (hmbdc = 5-hydroxyisophthalic acid) has been synthesized and characterized by elemental analysis, IR spectra and single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P2Jc, with a = 9.599(3), b = 18.699(5), c = 7.557(2) A, r= 108.198(4)°, V= 1288.6(6) A3, Z= 4, M,.= 382.60, Dc = 1.972 g/cm^, F(000) = 760, p = 1.740, the final R =0.0555 and wR = 0.0995 for 1732 observed reflections with 1 〉 2σ(I). The structural analysis shows that the intermolecular hydrogen bonds and π-π interactions result in a three-dimensional supramolecular framework.展开更多
A new Ni(Ⅱ) complex [Ni2(salen)2]·(NCS)·NH4 (salen = N,N'-bis(salicylideneamino)ethanato) has been prepared and structurally characterized by elemental analysis, IR spectra and single crystal X-r...A new Ni(Ⅱ) complex [Ni2(salen)2]·(NCS)·NH4 (salen = N,N'-bis(salicylideneamino)ethanato) has been prepared and structurally characterized by elemental analysis, IR spectra and single crystal X-ray diffraction. It crystallizes in the orthorhombic system, space group Pbca with a = 16.8725(13), b = 19.0046(15), c = 20.0583(16)A, Z = 8, V = 6431.8(9)A^3, C33H32N6Ni2O4S1, Mr = 726.13, Dc = 1.500 g/cm^3, F(000) = 3008, μ = 1.284 mm^-1, the final R = 0.0394 and wR = 0.0767 for 4449 observed reflections with I 〉 2σ(I). The complex involves a N,N'-ethylene-bis(salicylaldiminato) Schiff base, an isothiocyanato anion and an ammonium cation. The nickle(II) ion adopts a distorted square coordination geometry with N2O2 set of Schiff base ligand. The complexes are linked into a dimmer via intermolecular hydrogen bonds and the [Ni(salen)] moieties are connected together to form a 2-D layer structure by intermolecular N-H…O hydrogen bonds and π-π stacking. Cyclic-voltammetry method was used to characterize electrochemically the complex.展开更多
Assembly of H4btec with cobalt(Ⅱ) acetate afforded a new double 2D layer coordination polymer, [Co(bteC)1/2(H2O)4·2H2O]n (H4btec = benzene-1,2,4,5-tetracarboxylic acid) 1. The polymeric structure has bee...Assembly of H4btec with cobalt(Ⅱ) acetate afforded a new double 2D layer coordination polymer, [Co(bteC)1/2(H2O)4·2H2O]n (H4btec = benzene-1,2,4,5-tetracarboxylic acid) 1. The polymeric structure has been characterized by single-crystal X-ray diffraction, FT-IR and thermal analysis. The crystal is of triclinic, space group PI with a = 10.8762(2), b = 11.1411(1), c = 11.5084(3) A, a = 82.8950(10), β = 63.0050(10), γ = 62.1500(10)°, V = 1091.72(4) A^3, C5H13CoO10, Mr= 292.08, Z = 4, Dc = 1.777 g/cm^3, μ = 1.612 mm^-l, F(000) = 600, R = 0.0578, and wR = 0.2162 for 3576 observed reflections (Ⅰ 〉 2σ(Ⅰ)). Complex 1 consists of a new double 2D layer structure [Co(btec)1/2(H2O)4]n, both consisting of 4 + 4 grids with the sizes of 11.3667(2)A × 11.5084(3)A (Co(1)-Co(1A) × Co(2A)-Co(2B)) and 11.5084(3)A × 11.3667(2)A (Co(3)-Co(3C) × Co(4)- Co(4A)), respectively. The phenyl rings are at the comers while the Co(Ⅱ) atoms are in the sides of the grids, and lattice water molecules decorate between the layers. Hydrogen bonds between the layers and lattice water molecules result in the final 3D framework.展开更多
The title complex [Cu(HTren)Cl2]ClO4·H2O (Tren = tris(2-aminoethyl)amine) was synthesized by the reaction of Cu(ClO4)2·6H2O with Tren.3HCl in water and methyl alcohol. The crystal (CuC6H21Cl3N4O5) ...The title complex [Cu(HTren)Cl2]ClO4·H2O (Tren = tris(2-aminoethyl)amine) was synthesized by the reaction of Cu(ClO4)2·6H2O with Tren.3HCl in water and methyl alcohol. The crystal (CuC6H21Cl3N4O5) is of triclinic, space group P1, with a = 8.2689(2), b = 8.4503(3), c = 11.6801(4) A, α= 96.9350(10), β= 108.2440(10), y = 90.7550(10)°, V= 768.32(4)A^3, Z = 2, Mr= 399.16, D,.= 1.725 g/cm^3,μ= 1.962 mm^-1, F(000) = 410, T= 293(2) K, the final R = 0.0479 and wR = 0.1339 for 2659 observed reflections with I 〉 2σ(I). X-ray single-crystal structure analysis reveals that the copper(Ⅱ) atom adopts a slightly distorted square-pyramidal geometry. The distances between Cu and N atoms (N(1), N(2), N(3)) range from 1.975(4) to 2.116(3)A,. The bond lengths of Cu-Cl(1) and Cu-Cl(2) are 2.309(10) and 2.591(10) A, respectively. The whole crystal presents a three-dimensional network structure by hydrogen bonds.展开更多
基金supported by the National Natural Science Foundation of China (No. 29890210) and the Key Project of the Chinese Academy of Sciences (KJCX2-H3)
文摘The assembly of 1,4-benzenedicarboxylic acid (H2bdc), 4,4?bipyridine (4,4?bipy), trimethyltin chloride and MnBr24H2O in hydrothermal conditions gave rise to a hydrogen-bonded three-dimensional complex {[Mn(4,4?bipy)4H2O](bdc)}n which has been characterized by single- crystal X-ray diffraction. The complex crystallizes in the monoclinic system, space group P2/n with a = 7.0001(2), b = 11.5540(3), c = 11.4192(1) ? = 101.754(2)? V = 904.21(4) 3, Z = 2, C18H20MnN2O8, Mr = 447.30, Dc = 1.643 g/cm3, F(000) = 462 and m(MoK? = 0.783 mm-1. The final R and wR are 0.0499 and 0.1301, respectively for 1335 observed reflections with I ≥ 2(I). The Mn (Ⅱ) is six-coordinated in a distorted octahedral geometry. 4,4?Bipyridine in a m-bridge mode links [Mn(H2O)4]2+ into a linear cation chain. bdc acts as a counter anion and links the linear chains into a three-dimensional structure through hydrogen bonds.
基金supported by the Postdoctor Foundation of Jiangsu Province (No. 0701001B)the Foundation of Taishan University (No. Y04-2-02)
文摘A manganese(Ⅱ) complex (tataH)2[Mn(pydc)2]·4H2O (C20H28MBN14O12, Mr = 711.50, tata = 2,4,6-triamino-1,3,5-triazine, pydcH2 = pyridine-2,6-dicarboxylic acid) has been synthesized and its crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group P1^-, with a = 9.9847(3), b = 10.9813(3), c = 15.2616(5)A, a = 101.5310(10), β = 90.2610(10), γ = 116.4600( 10)% V = 1459.44(8)A^3, Z = 2, Dc = 1.619 g/cm^3,μ = 0.539 mm^-1, F(000) = 734, the final R = 0.0292 and wR = 0.0745. In the crystal the Mnn atom is six-coordinated by four carbonyl oxygen atoms and two pyridine nitrogen atoms from two tridentate pydc ligands to furnish a distorted octahedral geometry. The complex shows the A…D…D'…A' H-bonded tetramer. The molecules are packed in a three-dimensional framework structure by the combination of O-H…O, N-H…O and N-H…N hydrogen bonds between (tataH)^+, [Mn(pydc)2]^2- and crystal water.
基金the NNSFC (No. 20471061) the Science & Technology Innovation Foundation for the Young Scholars of Fujian Province (No. 2005J059)
文摘The title compound [Mn(O2CMe)2(phen)2] (phen = 1,10-phenanthroline) 1 has been synthesized and structurally determined by single-crystal X-ray diffraction. The crystal is of orthor- hombic, space group Pbcn, with a = 12.554(4), b = 10.168(3), c = 17.704(5)A, V= 2259.7(12)A^3 Z = 4, C28H22MnN4O4, Mr= 533.44, Dc= 1.568 g]cm^3, F(000) = 1100, Rint = 0.0242, T= 293(2) K and p = 0.631 mm^-1. The final R = 0.0687 and wR = 0.1960 for 2046 observed reflections with I 〉 20(/). The structure of the complex consists of one Mn(II) core coordinated by two bidentate-bound CH3COO^- groups and two η^2-phen groups forming an eight-coordinate geometrical configuration.
基金This work was financially supported by the NNSFC (20472085)
文摘The title compound, {[MnL2·(2,2'-bipy)-H2O]-(HL)}, has been synthesized (HL = p-methoxybenzoic acid, 2,2'-bipy = 2,2'-bipyridine) by the reaction of MnCl2-6H2O with p-methoxybenzoic and 2,2'-bipyridine in an alcohol-water solution. It crystallizes in the tricfinic system, space group PI with α = 10.1138(5), b = 11.2811(5), c = 16.2210(8) A, α = 77.5920(10),β = 72.1890(10), γ = 66.2320(10)°, Mr = 683.56, V=1603.65(13) A3, Z= 2, Dc = 1.416 g/cm^3, F(000) = 710,μ = 0.473 mm^-1, the final R = 0.0619 and wR = 0.1571 for 4724 observed reflections with I 〉 20(I). The structure determined demonstrated that it is an isomeric modification of the structure reported before. The Mn atom is six-coordinated by two N and four O atoms, forming a distorted octabedral geometry. All Mn-O and Mn-N distances range from 2.113(3)-2.410(3) A. There also exists a dissociative p-methoxybenzoic acid beside the octahedron.
基金This work was supported by the National Natural Science Foundation of China (No. 20231020)
文摘Two zinc(Ⅱ) compounds, [Zn(L)(H2O)2]n 1 and [Zn(4,4'-bpy)(H2O)4](L) 2 (H2L = trans,trans-1,3 butadiene 1,4-dicarboxylic acid), were synthesized by hydrothermal methods and characterized by single-crystal X-ray diffraction analyses. Compound 1 crystallizes in monoclinic, space group C2/c with a=15.4970(16), b = 5.4976(6), c = 10.7113(12) A, β=96.298(6)°, C6H8O6Zn, Mr = 241.50, V = 907.06(17) A^3, Z = 4, D, = 1.768 g/cm^3, F(000) = 488,μ = 2.703 mm^-1, S = 1.060, the final R = 0.0256 and wR = 0.0660 for 968 observed reflections with Ⅰ 〉 2σ(Ⅰ). Compound 2 crystallizes in triclinic, space group P1^- with a = 6.915(2), b = 7.166(2), c = 10.363(3) A, α = 73.250(4), β = 84.429(4), γ = 61.605(3)°, C16H2ON2O8Zn, Mr = 433.70, V = 432.1 (2) A^3, Z = 1, D, = 1.667 g/cm^3, F(000) = 224 and μ= 1.471 mm^-1, S = 1.118, the final R = 0.0486 and wR = 0.1077 for 1352 observed reflections with Ⅰ〉 2σ(Ⅰ). Upon using the assembly strategy of combination of coordination polymer chains with intermolecular hydrogen bonds, three-dimensional frameworks of complexes 1 and 2 were formed.
基金the NNSFC (No. 20471061)the Science & Technology Innovation Foundation for the Young Scholar of Fujian Province (No. 2005J059)
文摘The title compound, [Mn4O2(O2CMe)6(MeOH)2(dbm)2]·2MeCOOH·2CH2Cl2 (Hdbm = dibenzoylmethane), has been synthesized and structurally determined by single-crystal X-ray diffraction. The crystal belongs to triclinic, space group P/, with a = 10.729(3), b = 12.269(3), c = 13.085(4) A, a = 106.367(3),β = 107.643(2), γ = 94.771(2)°, V = 1547.9(7) A^3, Z = 1, C50H64Cl4Mn4O24, Mr= 1410.57, Dc= 1.513 g/cm^3, F(000) = 724, Rint = 0.0147, T= 293(2) K and p = 1.046 mm ^-1. The final R = 0.0359 and wR = 0.0938 for 5791 observed reflections with 1 〉 2σ(/). The structure of the complex consists of one [Mn4(μ3-O)2]^8+ core with four coplanar Mn atoms disposed in an extended "butterfly-like" arrangement and two O atoms triply bridging each "wing", and the peripheral ligation is provided by six by-MeCO2^-, two terminal ,μ2-dbm- groups at the two ends of the molecule, and two MeOH molecules on the central Mn atoms, lntermolecular O…H-O hydrogen bonding interactions are found within the structure of the compound.
文摘A novel binuclear complex ([Cu^2(μ2-shed)(hshed)].(CIO4),H2O, h2shed = N-salicylidene-N'-(2-hydroxyethyl)ethylenediamine) has been synthesized and structurally characterized by X-ray diffraction analysis. It crystallizes in monoclinic, space group P21/c with a = 12.511(10), b = 15.750(12), c = 14.281 (12) A, β = 100.564(14)°, C22H31CIN4O9Cu2, Mr = 658.04, V = 2766(4) A^3, Z = 4, Dc = 1.580 g/cm^3,μ(MoKα = 1.689 mm^-1, F(000) = 1352, the final R = 0.0528 and wR = 0.1433 for 4880 independent reflections with Rint = 0.0577. The complex is a binuclear copper compound, and two Cu(Ⅱ) ions in the binuclear cation are in different coordination environments. The Cu(1) ion adopts a distorted square pyramidal geometry (x = 0.22) with four donor atoms (N2O2) of the ligand in the basal plane, and one hydroxyl oxygen atom with protonated form occupying the apical position. The Cu(2) ion assumes the geometry of a distorted square plane with four donor atoms (N2O2) of the ligand. The Cu...Cu separation is 3.103 A,. In addition, N-H…O and C-H…O intermolecular hydrogen bonding interactions link these binuclear cations into a quasi one-dimensional chain along the a axis.
基金This work was financially supported by the National Natural Science Foundation of China the Key Project of Chinese Academy of Sciences
文摘The reaction of 4-hydroxybenzoic acid (H2L),4, 4-diaminodiphenylmethane (DADPM) and Cd(NO3)2?H2O in methane/water gave rise to a seven-coordinate Cd(Ⅱ) complex [Cd2(HL)4(H2O)6]?H2O which has been characterized by single-crystal X-ray diffraction. The complex crystallizes in the orthorhombic system, space group Pna21 with unit cell parameters: a = 10.3352(3), b = 12.0481(3), c = 28.2016(1) ? V = 3511.65(13) 3, Z = 4, C28H36Cd2O20, Mr = 917.37, Dc = 1.735 g/cm3, F(000) = 1840, (MoK? = 1.29mm-1. The final R and wR are 0.0536 and 0.1086 for 4898 observed reflections with I ≥ 4(I). The Cd(Ⅱ) is seven-coordinated in a distorted pentagonal bipyramidal geometry. The inter-molecular hydrogen bonds lead to the formation of a two-dimensional layer structure.
基金This work was supported by the NNSFC (Nos. 50173011and 90101028),the NSF of Tianjin (No. 013801611) and the TRAPOYT of MOE,China
文摘The title complex [Cu(L)2] (HL=4-salicylideneamino-3,5-dimethanol-1,2,4-triazole) was synthesized by the reaction of Cu(CH3COO)22H2O with 4-salicylideneamino-3,5-dimethanol- 1,2,4-triazole in the methanol. The single-crystal X-ray study reveals that the compound crystallizes in monoclinic, space group P21/n with a = 11.746(5), b = 8.145(3), c = 12.786(5) ? b = 106.64(1), V = 1172(1) ?, Z = 2, Dc = 1.581 g/cm3, m = 0.989 mm-1, F(000) = 574, C22H22Cu- N8O6, Mr = 558.02, T = 293(2) K, R = 0.0394 and Rw = 0.0835 for 2376 observed reflections with I > 2s(I). The complex comprises a four-coordinated copper(II) center, with an N2O2 planar coordi- nation environment. The molecules are connected by hydrogen bonds to form one-dimensional chains which are further linked to form a two-dimensional plane.
基金the Faculty of Arts and Sciences,Ondokuz Mayis University,Turkey,for the use of the Stoe IPDSⅡdiffractometer (purchased under grant No.F279 of the University Research Fund)
文摘The title compound, trans-bis(acesulfamato-O)tetraaquazinc(Ⅱ) (I, C8H16N2O12S2Zn), crystallizes in the triclinic system, space group P1 with a = 5.1638(5), b = 8.5338(9), c = 9.9583(9)A, α = 74.325(8), β = 81.112(7), γ = 75.800(8)°, V= 407.77(7) A3, Z = 1, F(000) = 236, Rint = 0.085, T= 296 K, the final R = 0.029 and wR = 0.078 for 1832 observed reflections with I〉 2σ(0. The ZnⅡcentre resides on a centre of symmetry and has a distorted octahedral geometry. The basal plane is defined by two carbonyl O atoms of two monodentate trans-oriented acesulfamato ligands and two trans-aqua ligands. The axial positions in the octahedron are occupied by two trans-aqua ligands. Intermolecular O-H…O hydrogen bonds produce R22(8) and R22(16) rings, which lead to two- dimensional polymeric chains.
基金supported by the University Technology Development Project of Shanxi Province (No. 20101116)
文摘The single crystals of the azo copper(Ⅱ)-complex have been obtained from the solution of the compound dissolved in the ethanol by slow evaporation at room temperature. The structure was successfully determined by single-crystal X-ray diffraction. The crystal is of triclinic system, space group P1 with a = 7.8843(12), b = 11.5998(17), c = 13.955(2) A, α = 112.214(2), β = 95.105(2), γ = 97.616(2)o, V = 1157.6(3) A^3, Mr = 586.97, Z = 2, F(000) = 600, Dc = 1.684 g/cm^3, μ(MoKα) = 1.120 mm-1, the final R = 0.0419 and wR = 0.1259 for 3475 observed reflections with I 〉 2σ(I). The coordination around copper(II) atom is a slightly distorted square-pyramidal geometry involving [Cu(C16H11N4O8S)(OH)H2O]-cation, one Na+ anion and one C2H5OH solvate molecule. The hydrogen bonds and π···π stacking interactions extend the complex into a three-dimensional framework.
基金This work was financially supported by the Natural Science Foundation of Henan Province (No. 0611011900)
文摘The title complex Mn(HL)4(NCS)2(CH3CH2OH)2 has been achieved via selfassembly by incorporating manganese(Ⅱ) into pyridine-3-carbaldehyde thiosemicarbazonate ligand, and characterized by elemental analysis and single-crystal X-ray diffraction study. The crystal crystallizes in triclinic, space group PI^-, with a = 8.896(2), b = 9.530(2), c = 14.520(4)°A, α = 87.035(4), β= 88.112(4), γ= 69.434(4)°, V= 1150.9(5)°A^3, Z = 1, Mr = 984.17, Dc = 1.420 g/cm^3,μ(MoKα) = 0.612 mm^-1, F(000) = 511, the final R = 0.0574 and wR = 0.1547 for 2855 observed reflections with I〉2σ(I). The complex contains one six-coordinated manganese ion connected by two thiosemicarbazide ligands, in which the thiosemicarbazone ligand acts as a monodentate ligand and coordinates to the center metal atoms via the pyridyl nitrogen atoms, two ethanol molecules and two isothiocyanic anions to give rise to a mononuclear structure. The coordination of a potentially tridentate thiosemicarbazone in manganese(Ⅱ) complex without using its sulfur and imine nitrogen sites is unusual. Hydrogen bonds existing in the complex link the different components to stabilize the crystal structure.
基金Financially supported by NNSFC (No. 20031020), NSF of Fujian Province and the Key Project from CAS
文摘The reaction of 3-(3-pyridyl)acrylic acid (H(3-PYA)) with Co(NO3)2.6H2O or MnCl2.4H2O yielded two new complexes: [Co(3-PYA)2(H2O)4.H2O] 1 and [Mn(3-PYA)2(H2O)4] 2. Complex 1 crystallizes in monoclinic, space group C2/c with a = 9.9473(12), b = 13.7227(16), c = 14.7376(18) A, β = 99.043(2)°, V = 1986.7(4) A^3, Z = 4, Dc= 1.549 g/cm^3,μ = 0.921 mm^-1, F(000) = 964, R = 0.0786 and wR = 0.1443. Six types of hydrogen bonds and π-π packing interactions connect the mononuclear units [Co(Ⅱ)(3-PYA)2(H2O)4·H2O] into a three-dimensional supramolecular architecture. Complex 2 crystallizes in monoclinic, space group P21/n with a = 11.3630(16), b = 7.0346(10), c = 12.1365(18) A, β = 112.545(3)°, V = 896.0(2) A^3, Z = 2, D, = 1.997 g/cm^3,μ = 0.785 mm^-1, F(000) = 438, R = 0.0787 and wR = 0.1550. The discrete entity Mn(Ⅱ)(3-PYD)2(H2O)4 is extended into a 3-D supramolecular architecture by four kinds of hydrogen bonds.
基金Supported by the Key Subject of Huangshan University (No.2007xkjq013)
文摘A novel MnⅡ complex [{Mn(IBG)(2,2'-bipy)(H2O)}·4H2O]n 1(H2IBG=isophtha-loylbisglycine and 2,2'-bipy = 2,2'-bipyridine) has been synthesized and characterized by singlecrystal X-ray diffraction,elemental analysis,IR spectra and thermogravimetric analysis.It crystallizes in monoclinic,space group P21/n,with a=13.667(2),b=14.045(2),c=14.195(2),β=101.483(3)°,V=2670.1(7)3,Z=4,C22H26N4O11Mn,Mr=577.41,Dc=1.436 g/cm3,F(000)=1196.0,μ(MoKα)=0.558 mm-1,the final R=0.0578 and wR=0.1460 for 2974 observed reflections with I2σ(I).In the structure,the MnⅡ atom is coordinated in a distorted octahedral environment arranged by one water molecule,one 2,2'-bipy ligand and two IBG ligands.
基金the National Natural Science Foundation of China (No. 20431010)
文摘The two title complexes, [Cd{3,5-(NO2)2sal}(2,2′-bipy)]n 1 and [Mn{3,5- (NO2)2sal}(2,2′-bipy)]n 2 (3,5-(NO2)2sal = 3,5-dinitrosalicylate, 2,2'-bipy = 2,2′-bipyridine), were synthesized by the hydrothermal reaction and structurally characterized. Complex 1 crystallizes in triclinic, space group P1, a = 5.581(4), b = 12.071(8), c = 12.88(1)A, α= 92.10(3),β= 96.73(3), γ = 102.02(2)°, C17H10N407Cd, Mr = 494.69, V= 841(1)A3, Z = 2, Dc = 1.954 g/cm3, F(000) = 488, μ= 1.353 mm^-1, R = 0.0248 and wR = 0.0761. Complex 2 crystallizes in monoclinic with space group P21/c, a = 8.604(3), b = 23.88(1), c = 8.894(3) A, β = 102.45(1)°, C17H10N407Mn, Mr = 437.23, V= 1785(1) A3, Z=.4, Dc = 1.627 g/cm3, F(000) = 884, μ = 0.791 mm^-1, R = 0.0471 and wR = 0.1250. Complex 1 possesses an infinite 1D polymeric chain structure consisting of the repeated basic four-membered ring units (Cd2O2) and eight-membered ring units (CdOCO)2. Compound 2displays a linear 1D chain through Mn(Ⅱ) atoms and bridging carboxylate groups of 3,5-dinitrosalicylic acid ligands with the Mn…Mn separation of 4.472(2)A. The fluorescence properties and cyclic voltammetric behaviors of the complexes are also reported.
基金This work was supported by the NSF for Distinguished Young Scientist of China (20425104) and the NSF of Fujian Province (A0420002, 2005I017)
文摘A new Cu(Ⅱ) complex [Cu(4-cba)(1,10-phen)(H2O)2](NO3) (4-Hcba = 4-cyanobenzoic acid) has been synthesized by solvothermal reaction in an ethanol/water mixed solution at 100 ℃ and structurally characterized by single-crystal X-ray diffraction. Crystallographic data: C20H16CuN4O7, Mr= 487.91, triclinic, space group PI, a = 7.8420(2), b = 9.1070(2), c = 15.1140(6) A, a = 76.889(9), β = 81.332(11), γ = 74.844( 11)°, V = 1009.89(5) A^3, Z = 2, Dc = 1.605 g/cm^3, F(000) = 498, μ = 1.134 mm^-1, the final R = 0.0379 and wR = 0.0865 for 2977 observed reflections with 1 〉 2σ(Ⅰ). The Cu(Ⅱ) atom is coordinated by two terminal water molecules, one chelating 1,10-phen molecule and one monodentate 4-cba ligand to form a slightly distorted square pyramid. The title complex molecules are connected through hydrogen bonds and π-π stacking interactions to generate a 2D layered network. The thermogravimetric analysis of the title complex has also been discussed.
基金Supported by the National Natural Science Foundation of China (20571039, 20171020) the Ministry of Education of China (20050284031)
文摘A novel coordination polymer [{Cd(hmbdc)(H20)3}-2H20],, (hmbdc = 5-hydroxyisophthalic acid) has been synthesized and characterized by elemental analysis, IR spectra and single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P2Jc, with a = 9.599(3), b = 18.699(5), c = 7.557(2) A, r= 108.198(4)°, V= 1288.6(6) A3, Z= 4, M,.= 382.60, Dc = 1.972 g/cm^, F(000) = 760, p = 1.740, the final R =0.0555 and wR = 0.0995 for 1732 observed reflections with 1 〉 2σ(I). The structural analysis shows that the intermolecular hydrogen bonds and π-π interactions result in a three-dimensional supramolecular framework.
基金This work was supported by the National Natural Science Foundation of China (No. 20471026)the Natural Science Foundation of Henan Province (No. 0311021200)
文摘A new Ni(Ⅱ) complex [Ni2(salen)2]·(NCS)·NH4 (salen = N,N'-bis(salicylideneamino)ethanato) has been prepared and structurally characterized by elemental analysis, IR spectra and single crystal X-ray diffraction. It crystallizes in the orthorhombic system, space group Pbca with a = 16.8725(13), b = 19.0046(15), c = 20.0583(16)A, Z = 8, V = 6431.8(9)A^3, C33H32N6Ni2O4S1, Mr = 726.13, Dc = 1.500 g/cm^3, F(000) = 3008, μ = 1.284 mm^-1, the final R = 0.0394 and wR = 0.0767 for 4449 observed reflections with I 〉 2σ(I). The complex involves a N,N'-ethylene-bis(salicylaldiminato) Schiff base, an isothiocyanato anion and an ammonium cation. The nickle(II) ion adopts a distorted square coordination geometry with N2O2 set of Schiff base ligand. The complexes are linked into a dimmer via intermolecular hydrogen bonds and the [Ni(salen)] moieties are connected together to form a 2-D layer structure by intermolecular N-H…O hydrogen bonds and π-π stacking. Cyclic-voltammetry method was used to characterize electrochemically the complex.
基金Supported by the Foundation of Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces (No. 0506)
文摘Assembly of H4btec with cobalt(Ⅱ) acetate afforded a new double 2D layer coordination polymer, [Co(bteC)1/2(H2O)4·2H2O]n (H4btec = benzene-1,2,4,5-tetracarboxylic acid) 1. The polymeric structure has been characterized by single-crystal X-ray diffraction, FT-IR and thermal analysis. The crystal is of triclinic, space group PI with a = 10.8762(2), b = 11.1411(1), c = 11.5084(3) A, a = 82.8950(10), β = 63.0050(10), γ = 62.1500(10)°, V = 1091.72(4) A^3, C5H13CoO10, Mr= 292.08, Z = 4, Dc = 1.777 g/cm^3, μ = 1.612 mm^-l, F(000) = 600, R = 0.0578, and wR = 0.2162 for 3576 observed reflections (Ⅰ 〉 2σ(Ⅰ)). Complex 1 consists of a new double 2D layer structure [Co(btec)1/2(H2O)4]n, both consisting of 4 + 4 grids with the sizes of 11.3667(2)A × 11.5084(3)A (Co(1)-Co(1A) × Co(2A)-Co(2B)) and 11.5084(3)A × 11.3667(2)A (Co(3)-Co(3C) × Co(4)- Co(4A)), respectively. The phenyl rings are at the comers while the Co(Ⅱ) atoms are in the sides of the grids, and lattice water molecules decorate between the layers. Hydrogen bonds between the layers and lattice water molecules result in the final 3D framework.
基金The project was supported by the Education Foundation of Jiangsu Province (03KJD150212)
文摘The title complex [Cu(HTren)Cl2]ClO4·H2O (Tren = tris(2-aminoethyl)amine) was synthesized by the reaction of Cu(ClO4)2·6H2O with Tren.3HCl in water and methyl alcohol. The crystal (CuC6H21Cl3N4O5) is of triclinic, space group P1, with a = 8.2689(2), b = 8.4503(3), c = 11.6801(4) A, α= 96.9350(10), β= 108.2440(10), y = 90.7550(10)°, V= 768.32(4)A^3, Z = 2, Mr= 399.16, D,.= 1.725 g/cm^3,μ= 1.962 mm^-1, F(000) = 410, T= 293(2) K, the final R = 0.0479 and wR = 0.1339 for 2659 observed reflections with I 〉 2σ(I). X-ray single-crystal structure analysis reveals that the copper(Ⅱ) atom adopts a slightly distorted square-pyramidal geometry. The distances between Cu and N atoms (N(1), N(2), N(3)) range from 1.975(4) to 2.116(3)A,. The bond lengths of Cu-Cl(1) and Cu-Cl(2) are 2.309(10) and 2.591(10) A, respectively. The whole crystal presents a three-dimensional network structure by hydrogen bonds.