A complex [Cd2(tbb)C14]·4DMF·3H2O, where tbb is 1,2,3,4-tetra(1H-benzo[d]imi- dazol-2-yl)butane, was synthesized and characterized by X-ray single-crystal structure analyses. For this complex: C44H49Cd2...A complex [Cd2(tbb)C14]·4DMF·3H2O, where tbb is 1,2,3,4-tetra(1H-benzo[d]imi- dazol-2-yl)butane, was synthesized and characterized by X-ray single-crystal structure analyses. For this complex: C44H49Cd2C14N12OT, Mr= 1224.55, monoclinie system, space group C2/c, a = 29.563(3), b = 14.2580(17), c = 26.355(3) A,β = 97.036(2)°, V = 11025(2) A3, Z = 8, D,.= 1.475 g/cm3, 2 = 0.71073 A, IL(MoKa) = 1.021 mm-1, F(000) = 4936, S = 1.047, R = 0.0680 and wR = 0.1832 for 11812 observed reflections with I 〉 2σ(I). It is a neutral dinuclear complex. One 1,2,3,4-tetra(1H-benzo[d]imidazol-2-yl)butane coordinates to two cadmium ions. Each cadmium ion is coordinated by two nitrogen atoms of tbb and two chloride ions. The complex emits blue luminescence in DMF solution as well as in solid powder state.展开更多
A dinuclear cadmium complex [Cd2(bpbb)2Cl2(μ-Cl2)], where bpbb is 1,2-bis(1-phenyl-1H-benzo[d]imidazol-2-yl)benzene, was synthesized and characterized by X-ray singlecrystal structure analyses. Crystal data: C...A dinuclear cadmium complex [Cd2(bpbb)2Cl2(μ-Cl2)], where bpbb is 1,2-bis(1-phenyl-1H-benzo[d]imidazol-2-yl)benzene, was synthesized and characterized by X-ray singlecrystal structure analyses. Crystal data: C(64)H(44)Cd2Cl4N8, Mr = 1291.67, triclinic system, space group P1, a = 10.076(3), b = 12.730(4), c = 13.176(4) A, α = 99.087(3), β = 109.859(3), γ = 112.551(3)°, V = 1384.8(7) A3, Z = 1, Dc = 1.549 g/cm^3, λ = 0.71073 A, μ(Mo Kα) = 1.010 mm^(–1), F(000) = 648, S = 1.062, R = 0.0425 and wR = 0.1130 for 9688 observed reflections with I 〉 2s(I). One 1,2-bis(1-phenyl-1H-benzo[d]imidazol-2-yl)benzene coordinates to one cadmium ion. The cadmium is five-coordinated by three chloride ions and two nitrogen atoms from bpbb. Each cadmium ion is bridged by two chloride ions. The decomposition temperature is up to 420 ℃. The complex emits blue luminescence in DMF solution and in solid powder state.展开更多
The complex [Cd(bbb)Cl2]·DMF·H2O, where bbb is 2-(2-(1H-benzo[d]imidazol-2-yl)benzyl)-1H-benzo[d]imidazole, was synthesized and characterized by X-ray single-crystal structure analyses. For the complex...The complex [Cd(bbb)Cl2]·DMF·H2O, where bbb is 2-(2-(1H-benzo[d]imidazol-2-yl)benzyl)-1H-benzo[d]imidazole, was synthesized and characterized by X-ray single-crystal structure analyses. For the complex: C24H25Cl2CdN5O2, Mr = 598.77, crystal system, triclinic, space group P1, a = 9.9878(12), b = 10.0008(12), c = 13.2217(15) , α = 80.674(2), β = 72.158(2), γ = 86.776(2)°, V = 1240.5(3) 3, Z = 2, Dc = 1.598 g/cm3, λ = 0.71073, μ(MoKα) = 1.127 mm–1, F(000) = 600, S = 1.04, R = 0.0905 and wR = 0.3088 for 4805 observed reflections with I 〉 2σ(I). It is a neutral complex. The distorted tetrahedral geometry of cadmium ion is coordinated by two nitrogen atoms of ligand and two chloride ions. The complex emits blue green luminescence with emission peaks at 480 nm in DMF solution.展开更多
The reaction of CdCl2 with 6,7-dicyanodipyridoquinoxaline (DICNQ) by solvothermal reaction gives rise to a coordination polymer [CdCl2(DICNQ)]n 1. Single-crystal X-ray diffraction analysis reveals that the compoun...The reaction of CdCl2 with 6,7-dicyanodipyridoquinoxaline (DICNQ) by solvothermal reaction gives rise to a coordination polymer [CdCl2(DICNQ)]n 1. Single-crystal X-ray diffraction analysis reveals that the compound in space group Pbcn creates 1-D chloro-bridging chains. Crystal data for 1: a = 6.756(1), b = 35.371(6), c = 7.027(1)A , V = 1679.1(5) A^3, Z = 4.00, C16H6CdCl2N6, Mr = 465.57, Dc = 1.842 g/cm^3, μ = 1.630 mm-1, F(000) = 904, S = 1.005 and T = 293(2) K. The final R = 0.0376 and wR = 0.1029 for 1291 observed reflections with I 〉 2σ(I), and R = 0.0499 and wR = 0.1125 for all data. The 1-D chloro-bridging chains are parallel-stacked in the a and b directions, and further stabilized through π-stacking interactions, hydrogen-bonding interactions and C≡N···π interactions to generate a 3-D structure. Compound 1 displays intense bluish-green photoluminescence from the intraligand charge-transfer of the DICNQ ligand and the Cl--to-DICNQ charge-transfer mechanism which is probed by the density of states (DOS) calculations.展开更多
The synthesis of a new ligand, m-bromobenzenediazoaminoazobenzene (m-BBDA) was carried out. The reaction between m-BBDA and cadmium(II) was sensitive at pH over 12 and in the presence of emulsifier OP. Because of the ...The synthesis of a new ligand, m-bromobenzenediazoaminoazobenzene (m-BBDA) was carried out. The reaction between m-BBDA and cadmium(II) was sensitive at pH over 12 and in the presence of emulsifier OP. Because of the high interference of excess of ligand beta-correction theory was applied instead of the single wavelength method. This study gave the simple determination of the complex ratio, real molar absorptivity (epsilon) and step or cumulative stability constant (K).展开更多
A dinuclear cadmium complex [Cd_2(bppb)Cl_4×2DMF](1), where bppb is 2-(2-(1 Hbenzo[d]imidazol-2-yl)phenyl)-1-phenyl-~1 H-benzo[d]imidazole, was synthesized and characterized by X-ray single-crystal struct...A dinuclear cadmium complex [Cd_2(bppb)Cl_4×2DMF](1), where bppb is 2-(2-(1 Hbenzo[d]imidazol-2-yl)phenyl)-1-phenyl-~1 H-benzo[d]imidazole, was synthesized and characterized by X-ray single-crystal structure analyses. For 1: C_(58) H_(50) Cd_2 Cl_4 N_(10) O_2, M_r = 1285.68, monoclinic system, space group P2_1/n, a = 16.136(3), b = 10.612(2), c = 16.270(3) ?, β = 96.209(2)°, V = 2769.7(9) ?~3, Z = 2, D_c = 1.542 g/cm^3, λ = 0.71073 ?, μ(Mo Kα) = 1.013 mm^(–1), F(000) = 1296, S = 1.055, R = 0.0393 and wR = 0.1185 for 4876 observed reflections with I 〉 2σ(I). One 9 mium ion which is five-coordinated by three chloride ions and two nitrogen atoms from bppb. Two cadmium ions are bridged by two chloride ions. The Cd_2(bppb)_2 Cl_2(μ-Cl_2) decomposes at 350 ℃ which is much lower by 70 ℃ than [Cd_2(bpbb)_2 Cl_2(μ-Cl_2)](420 ℃). The complex emits blue luminescence in both DMF solution and solid powder. Phenyl ring substituting NH hydrogen atom of benzimidazole group in ligand can not obviously change the UV-vis and luminescence spectra peaks location of the benzimidazole cadmium complex.展开更多
Two novel complexes {[Zn(IM4py)2(tp)(H2O)]2H2O}. 1 and {[Cd(IM4py)2(tp)- (H2O)]1.25H2O},, 2 (IM4py = 2-(4'-pyridinyl)-4,4,5,5-tetramethylimidazoline-l-oxyl and tp = terephthalate dianion) have been sy...Two novel complexes {[Zn(IM4py)2(tp)(H2O)]2H2O}. 1 and {[Cd(IM4py)2(tp)- (H2O)]1.25H2O},, 2 (IM4py = 2-(4'-pyridinyl)-4,4,5,5-tetramethylimidazoline-l-oxyl and tp = terephthalate dianion) have been synthesized and characterized by elemental analyses, IR spectrum and single-crystal X-ray diffraction. Crystal data for complex I: monoclinic, space group C2/c, a = 20.648(7), b = 12.130(4), c = 14.036(4) A, β = 106.351(5)°, C32H42N6O9Zn, Mr = 720.09, V = 3373.3(2) A3, Z= 4, Dc = 1.418 g/cm^3μt(MoKα) = 0.790 mm^-1, F(000) = 1512, the final R = 0.0407 and wR = 0.0894 for 3480 independent reflections with Rint = 0.0432. Crystal data for complex 2: monoclinic, space group C2/c, a = 21.332(6), b = 12.063(3), c = 14.246(4) A, β = 106.704(4)°, C32H40.50N6O8.25Cd, Mr = 753.60, V= 3511.2(2) A^3, Z = 4, Dc = 1.426 g/cm^3,μ(MoKα) = 0.679 mm^--1, F(000) = 1554, the final R = 0.0419 and wR = 0.0961 for 3627 independent reflections with Rint = 0.0440. The framework structures of complexes 1 and 2 are 3-D networks via the hydrogen bonds among 1-D chains. The notable characteristics of the two complexes are that the coordination polyhedron of Zn(Ⅱ) adopts a rare distorted five-coordinate square pyramidal geometry in 1, and the Cd(Ⅱ) complex exhibits an unusual distorted seven-coordinate pentagonal bipyramid in 2.展开更多
The two title complexes [{Cd(IBG-CH3)(4,4'-bipy)(H2O)2}·NO3]n 1 and [{Cd(IBG)- (4,4'-bipy)(H2O)2}·2H2O]n 2 (H2IBG = isophthaloylbisglycine and 4,4'-bipy = 4,4'-bipyridine) have been synthes...The two title complexes [{Cd(IBG-CH3)(4,4'-bipy)(H2O)2}·NO3]n 1 and [{Cd(IBG)- (4,4'-bipy)(H2O)2}·2H2O]n 2 (H2IBG = isophthaloylbisglycine and 4,4'-bipy = 4,4'-bipyridine) have been synthesized and characterized by single-crystal structure determination,IR and TG analyses. Complex 1 crystallizes in monoclinic,space group C2/c with a = 27.221(2),b = 11.6093(7),c = 16.3571(9)A,V = 5149.2(6) A^3,Z = 8,C23H23N5O11Cd,Mr = 657.86,Dc = 1.697 g/cm^3,F(000) = 2656.00,μ(MoKα) = 0.919 mm^-1,the final R = 0.0478 and wR = 0.0882 for 3728 observed reflections with I 〉 2σ(I). Complex 2 crystallizes in triclinic,space group Pī with a = 9.0940(4),b = 11.6852(5),c = 13.1119(6)A,V = 1230.26 A^3,Z = 2,C22H26N4O10Cd,Mr = 618.87,Dc = 1.671 g/cm^3,F(000) = 628.0,μ(MoKα) = 0.951 mm^-1,the final R = 0.0567 and wR = 0.1124 for 3713 observed reflections with I 〉 2σ(I). In both structures,the CdII metal centers are coordinated by seven atoms to form a distorted pentagonal bipyramidal geometry.展开更多
The crystal of the title complex with formula C48H52N8O16CI2Cd3(Mr=1405. 10) was crystallized in monoclinic, space group P21/n, with a=12. 666 (3), b=18. 306(6), c=13. 231 (4) A, p=111. 68(3), V=2851 (2) A3, Z=2, Dr=1...The crystal of the title complex with formula C48H52N8O16CI2Cd3(Mr=1405. 10) was crystallized in monoclinic, space group P21/n, with a=12. 666 (3), b=18. 306(6), c=13. 231 (4) A, p=111. 68(3), V=2851 (2) A3, Z=2, Dr=1. 637 g/cm-3 p=12. 680 cm-1, F(000)=1404. The final refinement is convergedwith R=0. 052 and Rw=0. 055. In the molecule [Cd3(py8(Oac)4] (CIO4)2, the aver-age values of Cd-N and Cd-O bonds are 2. 306 and 2. 288 A, respectively. In thecanon of the title complex. each Cd atom is coordinated by N and O atoms, which arefrom pyridine molecules and acetatoes, respectively, to form a distorted octahedron.And three Cd atoms are linked by two u2-O atoms of two acetatoes and other two u-ac-etato side bridges.展开更多
A new polymeric complex {[Cd2(bbmb)2(gt)2]'(H2O)2}, (bbmb = 4,4'-bis(benzimidazol-l-ylmethyl)biphenyl, H2gt = glutaric acid) has been obtained by hyclrothermal method and structurally characterized by elem...A new polymeric complex {[Cd2(bbmb)2(gt)2]'(H2O)2}, (bbmb = 4,4'-bis(benzimidazol-l-ylmethyl)biphenyl, H2gt = glutaric acid) has been obtained by hyclrothermal method and structurally characterized by elemental analysis, IR, XRD, TGA and single-crystal X-ray diffraction. The complex belongs to the triclinic system, space group P1 with a = 10.2417(15), b = 13.752(2), c = 22.201(3) A, a = 73.899(2), β = 88.416(2), y = 78.305(2)°, V = 2940.4(7) A3, Z = 2, C66H56Cd2N808, Mr = 1313.99, Dc = 1.484 g/cm3, F(000) = 1336 and μ = 0.787 mm-1, and features a 2D network. In the solid state at room temperature, the cadmium(Ⅱ) complex exhibits strong fluorescence absorption at 435 nm (λmax).展开更多
A novel complex [Cd2(phen)4(fca)2](ClO4)2(H2O)2 (fca = dianion of 3-ferrocenyl- 2-crotonic acid, phen = 1,10-phenanthroline) has been synthesized and characterized by X-ray single-crystal structure analysis. It crysta...A novel complex [Cd2(phen)4(fca)2](ClO4)2(H2O)2 (fca = dianion of 3-ferrocenyl- 2-crotonic acid, phen = 1,10-phenanthroline) has been synthesized and characterized by X-ray single-crystal structure analysis. It crystallizes in triclinic system, space group P?with a = 11.6297(5), b = 12.5165(5), c = 13.8986(6) ? a = 63.345(1), b = 87.747(1), g = 71.862(1), V = 1706.20(1) ?, Z = 1, Dc = 1.673 g/cm3, F(000) = 868 and m(MoKa) = 1.185 mm-1 (l = 0.71073 ). R = 0.0800 and wR = 0.1793 for 7653 observed reflections (I > 2s(I)). The structure consists of a dinuclear cation [Cd2(phen)4(fca)2]2+, two discrete perchlorate anions and two water molecules. The cationic part of the complex shows a tetrametallic core in which two fca groups act as the (O, O) bridging ligands between two cadmium(Ⅱ) ions with a distorted octahedral environment. The Cd…Cd intradimer distance is 4.128 ?展开更多
One new luminescent material of complex {[Cd(DPA)(H_2O)_2]·(H_2O)_2}_n(1) was synthesized by evaporation methods using 3,3A-thiodipropionic acid(DPA) and cadmium nitrate as the starting materials. Compo...One new luminescent material of complex {[Cd(DPA)(H_2O)_2]·(H_2O)_2}_n(1) was synthesized by evaporation methods using 3,3A-thiodipropionic acid(DPA) and cadmium nitrate as the starting materials. Compound 1 crystallizes in the monoclinic system,space group P2_1/n with a = 7.5460(7),b = 13.372(3),c = 12.304(3) A,β = 95.95(3)o,V = 1234.8(4) A^3,D_c = 1.940 g/cm^3,C_6H_(16)O_8 SCd,M_r = 360.65,F(000) = 720,μ(Mo Ka) = 1.960 mm^-1,Z = 4,R = 0.0460 and wR = 0.1185 for 1835 observed reflections(I 〉 2σ(I)),and R = 0.0591,wR = 0.1245 for all data. The complex has been characterized by elemental analysis,FT-IR,TG,PXRD and X-ray single-crystal structure analysis and the fluorescence property has also been studied. As a result,complex 1 possesses a two-dimensional(2-D) structure through DPA ligands interconnecting Cd2+ ions. Complex 1 emits the intense fluorescence of 420 nm in the solid state at room temperature.展开更多
Two new ternary complexes [Zη(3-aba)2(phen)]·2.58H2O 1 and {[Cd(3-aba)- (phen)2]·(NO3)·(1.5H2O) }n 2 (3-aba = 3-aminobenzoic acid anion, phen = 1,10-phenanthroline) were synthesized and c...Two new ternary complexes [Zη(3-aba)2(phen)]·2.58H2O 1 and {[Cd(3-aba)- (phen)2]·(NO3)·(1.5H2O) }n 2 (3-aba = 3-aminobenzoic acid anion, phen = 1,10-phenanthroline) were synthesized and characterized by elemental analysis, IR, UV spectrum and X-ray diffraction. Complex 1 crystallizes in the rhombohedral system, space group R3 with a = 3.5733(3), b = 3.5733(3), c = 1.1231(2) nm; V= 12.419(3) nm^3, C26H25.17NaO6.58Zn, Mr= 564.37, Z= 18, F(000) = 5253, μ= 0.937 mm^-1, Dc = 1.358 g/cm^3, R = 0.0668 and wR = 0.1690 for 2424 observed reflections (I〉 2σ(I)). Complex 2 belongs to the tetragonal system, space group P4/ncc with a = 2.88451(10), b = 2.88451(10), c = 1.55571(11) nm, V= 12.9441(11) nm^3, C31H25CdN6O6.50, Mr = 697.97, Z = 16, F(000) = 5648,μ=0.727 mm^-1, Dc= 1.433 g/cm^3, R = 0.0607 and wR = 0.1742 for 3468 observed reflections (I 〉 2σ(I)). Complex 1 displays a mononuclear structure. The carboxylate group of 3-aminobenzoic acid anion coordinates to Zn(Ⅱ) in a chelating bidentate mode, and the nitrogen atom of the ligand does not involve in coordination. Complex 2 exhibits a one-dimensional chain structure with 3-aminobenzoic acid anion coordinating to Cd(Ⅱ) in a μ2-bridging mode through its nitrogen atom and one of its oxygen atoms.展开更多
A novel pentaazadentate bismacrocycle was synthesized through an improved procedure of 1:1 Schiff base condensation of diformyltripyrrane with 3, 4, 3', 4'-tetraamino-biphenyl hydrochloride using Pb2+ as templ...A novel pentaazadentate bismacrocycle was synthesized through an improved procedure of 1:1 Schiff base condensation of diformyltripyrrane with 3, 4, 3', 4'-tetraamino-biphenyl hydrochloride using Pb2+ as template ion, in which the condensed byproduct water was removed efficiently to make the yield over 90%. Then the bismacrocyclic ligand reacted with cadmium chloride to Field the title metal complex with molecular weight being 1200.4 by TOF MS and the lambda(max) being 766 nm.展开更多
A new flexible double betaine L (L = 1,4-bis(pyridinio-4-carboxylato-N-methyl)benzene, C20H16N2O4) and its cadmium(Ⅱ) complex [Cd(H2O)aL(NO3)]NO3.H2O 1 were synthesized. Complex 1 was obtained by self-assem...A new flexible double betaine L (L = 1,4-bis(pyridinio-4-carboxylato-N-methyl)benzene, C20H16N2O4) and its cadmium(Ⅱ) complex [Cd(H2O)aL(NO3)]NO3.H2O 1 were synthesized. Complex 1 was obtained by self-assembly reaction of [Cd(NO3)2]-4H2O and L in hot water,and its crystal structure was determined by single-crystal X-ray diffraction analysis. Crystallographic data for complex 1: C20H24CdN4O14.H2O, Mr = 674.85, monoclinic, space group P21/c, a =13.7854(3), b = 14.2820(3), c = 14.9188(4) ,A°, β = 116.418(1)°, V = 2630.5(1)A°^3, Z = 4, Dc= 1.704g/cm^3,/J(MoKα) = 0.911 mm^-1, F(000) = 1368, the final R = 0.0315 and wR = 0.0768 for 3637 observed reflections with I 〉 2σ(I). In complex 1, L acts as a monodentate ligand to link a Cd(Ⅱ) ion in a novel coordination mode of double betaines. The mononuclear [Cd(H2O)aL(NO3)] units are connected through intermolecular hydrogen bonds and π-π stacking reactions to generate a 3D network.展开更多
A new Cd(II) complex [Cd(C12H6OaN2)(Phen)ffH2O)]'3H2O with 2,2"-bipyridine- 3,3"-dicarboxylic acid as a ligand has been synthesized. Crystal data for the title complex are as follows: monoclinic, space grou...A new Cd(II) complex [Cd(C12H6OaN2)(Phen)ffH2O)]'3H2O with 2,2"-bipyridine- 3,3"-dicarboxylic acid as a ligand has been synthesized. Crystal data for the title complex are as follows: monoclinic, space group P2dn, a = 12.8458(5), b = 17.9131(7), c = 15.2960(6) A, β = 111.7430(10)°, V = 3269.3(2) A3, Dc = 1.581 g/cm3, Z = 4,/a(MoKa) = 0.731 mm-1, F(000) = 1580, the R = 0.0244 and wR = 0.0605. In the title complex, the central Cd(ll) ion is located in a distorted octahedral coordination environment. The electrochemical and fluorescent properties of the title complex were studied. The results show that the electron transfer of the title complex is irreversible in the electrode reaction and it has a broad emission peak in the range of 470-508 nm with the excitation wavelength of 488 nm.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
Two new metal-organic complexes [Cd2(1,4-BDC)(4-pytyp)(H2O)4]·(1,4-BDC)(1) and [Cu2(1,4-BDC)(4-pytyp)2(H2O)2]·(1,4-BDC)·8H2O(2)(4-pytyp = 4'-(4''-pyridyl)-2,2':6',2''-terp...Two new metal-organic complexes [Cd2(1,4-BDC)(4-pytyp)(H2O)4]·(1,4-BDC)(1) and [Cu2(1,4-BDC)(4-pytyp)2(H2O)2]·(1,4-BDC)·8H2O(2)(4-pytyp = 4'-(4''-pyridyl)-2,2':6',2''-terpyridine, 1,4-H2 BDC = 1,4-benzenedicarboxylic acid) have been synthesized under hydrothermal conditions and characterized by elemental analysis, infrared analysis and X-ray single-crystal diffraction. The scrutiny of single-crystal structure reveals that complex 1 forms to a 3D supramolecular network linked by π-π stacking interactions and hydrogen bonds. X-ray diffraction analysis reveals that complex 2 exhibits a 3D supramolecular network linked through complicated hydrogen bonds. The thermogravimetric analysis and photoluminescent properties of 1 and 2 are discussed in detail.展开更多
Two homochiral mercury (1) and cadmium (2) complexes derived from chiral twisted biphenyl pyridine ligand (3,3'-bipyridine-5,5',6,6'-tetramethyl-2,2'-dimethoxy-1,1'-biphenyl) have been synthesized and chara...Two homochiral mercury (1) and cadmium (2) complexes derived from chiral twisted biphenyl pyridine ligand (3,3'-bipyridine-5,5',6,6'-tetramethyl-2,2'-dimethoxy-1,1'-biphenyl) have been synthesized and characterized by IR, microanalysis, TGA, UV-Vis, powder and single-crystal X-ray crystallography. Both 1 and 2 crystallize in orthorhombic space group P21212 with Z = 2. For 1, a = 14.2038(16), b = 14.3630(17), c = 7.0257(8), V = 1433.3(3)3, Mr = 878.91, Dc = 2.037 g/cm3, μ = 7.549 mm-1, F(000) = 824, the final GOF = 1.017, R = 0.0296 and wR = 0.0645 for 2925 observed reflections with I 2σ(I). For 2, a = 14.212(3), b = 14.392(3), c = 7.0498(14), V = 1442.0(5)3, Mr = 790.72, Dc = 1.821 g/cm3, μ = 2.924 mm–1, F(000) = 760, the final GOF = 1.075, R = 0.0340 and wR = 0.0834 for 3144 observed reflections with I 2σ(I). The crystal structures of 1 and 2 are isostructural and each adopts a two-dimensional supramolecular network which contains the C–H···π interactions.展开更多
A new bicadmium(??) complex [Cd2L](ClO4)2?1.25H2O (C28H35Cd2Cl4N6O13.25) was synthesized and characterized by X-ray diffraction and ES mass spectral analyses. It crystallizes in the triclinic system, space gro...A new bicadmium(??) complex [Cd2L](ClO4)2?1.25H2O (C28H35Cd2Cl4N6O13.25) was synthesized and characterized by X-ray diffraction and ES mass spectral analyses. It crystallizes in the triclinic system, space group P1 with a = 15.630(3), b = 15.990(3), c = 16.330(3) ?, α = 89.90(3), β = 68.87(3), γ = 87.94(3)o, V = 3804.1(13) ?3, Mr = 1034.22, Z = 4, F(000) = 2060, Dc = 1.806 g/cm3, T = 293(2) K, μ = 1.468 mm-1 and λ = 0.71073 ?. The structure was refined to R = 0.0779 and wR = 0.1960 for 7034 observed reflections with I > 2σ(I).展开更多
基金supported by the Natural Science Foundation of Guangdong Province(No.1414050000021)the National Natural Science Foundation of China((NO.21403191))the State Undergraduate Training Programs for Innovation
文摘A complex [Cd2(tbb)C14]·4DMF·3H2O, where tbb is 1,2,3,4-tetra(1H-benzo[d]imi- dazol-2-yl)butane, was synthesized and characterized by X-ray single-crystal structure analyses. For this complex: C44H49Cd2C14N12OT, Mr= 1224.55, monoclinie system, space group C2/c, a = 29.563(3), b = 14.2580(17), c = 26.355(3) A,β = 97.036(2)°, V = 11025(2) A3, Z = 8, D,.= 1.475 g/cm3, 2 = 0.71073 A, IL(MoKa) = 1.021 mm-1, F(000) = 4936, S = 1.047, R = 0.0680 and wR = 0.1832 for 11812 observed reflections with I 〉 2σ(I). It is a neutral dinuclear complex. One 1,2,3,4-tetra(1H-benzo[d]imidazol-2-yl)butane coordinates to two cadmium ions. Each cadmium ion is coordinated by two nitrogen atoms of tbb and two chloride ions. The complex emits blue luminescence in DMF solution as well as in solid powder state.
基金financially supported by the Natural Science Foundation of Guangdong Province(No.2014A030307010)Special funds for public welfare research and capacity building of Guangdong Province(Nos.2015A010105031,2016A010103042 and 2015A020211038)+1 种基金the National Spark Program Project(No.2015GA780053 and 2015GA780033)Lingnan Normal University Science Research Foundation(No.LZL1504)
文摘A dinuclear cadmium complex [Cd2(bpbb)2Cl2(μ-Cl2)], where bpbb is 1,2-bis(1-phenyl-1H-benzo[d]imidazol-2-yl)benzene, was synthesized and characterized by X-ray singlecrystal structure analyses. Crystal data: C(64)H(44)Cd2Cl4N8, Mr = 1291.67, triclinic system, space group P1, a = 10.076(3), b = 12.730(4), c = 13.176(4) A, α = 99.087(3), β = 109.859(3), γ = 112.551(3)°, V = 1384.8(7) A3, Z = 1, Dc = 1.549 g/cm^3, λ = 0.71073 A, μ(Mo Kα) = 1.010 mm^(–1), F(000) = 648, S = 1.062, R = 0.0425 and wR = 0.1130 for 9688 observed reflections with I 〉 2s(I). One 1,2-bis(1-phenyl-1H-benzo[d]imidazol-2-yl)benzene coordinates to one cadmium ion. The cadmium is five-coordinated by three chloride ions and two nitrogen atoms from bpbb. Each cadmium ion is bridged by two chloride ions. The decomposition temperature is up to 420 ℃. The complex emits blue luminescence in DMF solution and in solid powder state.
基金financially supported by the Natural Science Foundation of Guangdong Province(No.10152404801000017)Guangdong Province Undergraduate Training Programs for Innovation
文摘The complex [Cd(bbb)Cl2]·DMF·H2O, where bbb is 2-(2-(1H-benzo[d]imidazol-2-yl)benzyl)-1H-benzo[d]imidazole, was synthesized and characterized by X-ray single-crystal structure analyses. For the complex: C24H25Cl2CdN5O2, Mr = 598.77, crystal system, triclinic, space group P1, a = 9.9878(12), b = 10.0008(12), c = 13.2217(15) , α = 80.674(2), β = 72.158(2), γ = 86.776(2)°, V = 1240.5(3) 3, Z = 2, Dc = 1.598 g/cm3, λ = 0.71073, μ(MoKα) = 1.127 mm–1, F(000) = 600, S = 1.04, R = 0.0905 and wR = 0.3088 for 4805 observed reflections with I 〉 2σ(I). It is a neutral complex. The distorted tetrahedral geometry of cadmium ion is coordinated by two nitrogen atoms of ligand and two chloride ions. The complex emits blue green luminescence with emission peaks at 480 nm in DMF solution.
基金Supported by the NNSFC (20701037, 90922035)973 program (2009CB939801)+1 种基金Key Project from the CAS (KJCX2.YW.M10)the NSF of Fujian Province (2008I0026, 2008F3115)
文摘The reaction of CdCl2 with 6,7-dicyanodipyridoquinoxaline (DICNQ) by solvothermal reaction gives rise to a coordination polymer [CdCl2(DICNQ)]n 1. Single-crystal X-ray diffraction analysis reveals that the compound in space group Pbcn creates 1-D chloro-bridging chains. Crystal data for 1: a = 6.756(1), b = 35.371(6), c = 7.027(1)A , V = 1679.1(5) A^3, Z = 4.00, C16H6CdCl2N6, Mr = 465.57, Dc = 1.842 g/cm^3, μ = 1.630 mm-1, F(000) = 904, S = 1.005 and T = 293(2) K. The final R = 0.0376 and wR = 0.1029 for 1291 observed reflections with I 〉 2σ(I), and R = 0.0499 and wR = 0.1125 for all data. The 1-D chloro-bridging chains are parallel-stacked in the a and b directions, and further stabilized through π-stacking interactions, hydrogen-bonding interactions and C≡N···π interactions to generate a 3-D structure. Compound 1 displays intense bluish-green photoluminescence from the intraligand charge-transfer of the DICNQ ligand and the Cl--to-DICNQ charge-transfer mechanism which is probed by the density of states (DOS) calculations.
文摘The synthesis of a new ligand, m-bromobenzenediazoaminoazobenzene (m-BBDA) was carried out. The reaction between m-BBDA and cadmium(II) was sensitive at pH over 12 and in the presence of emulsifier OP. Because of the high interference of excess of ligand beta-correction theory was applied instead of the single wavelength method. This study gave the simple determination of the complex ratio, real molar absorptivity (epsilon) and step or cumulative stability constant (K).
基金financially supported by the Natural Science Foundation of Guangdong Province(No.2014A030307010)Special funds for public welfare research and capacity building of Guangdong Province(Nos.2015A010105031,2016A010103042 and 2015A020211038)+1 种基金the National Spark Program Project(No.2015GA780033)Lingnan Normal University Science Research Foundation(No.LZL1504)
文摘A dinuclear cadmium complex [Cd_2(bppb)Cl_4×2DMF](1), where bppb is 2-(2-(1 Hbenzo[d]imidazol-2-yl)phenyl)-1-phenyl-~1 H-benzo[d]imidazole, was synthesized and characterized by X-ray single-crystal structure analyses. For 1: C_(58) H_(50) Cd_2 Cl_4 N_(10) O_2, M_r = 1285.68, monoclinic system, space group P2_1/n, a = 16.136(3), b = 10.612(2), c = 16.270(3) ?, β = 96.209(2)°, V = 2769.7(9) ?~3, Z = 2, D_c = 1.542 g/cm^3, λ = 0.71073 ?, μ(Mo Kα) = 1.013 mm^(–1), F(000) = 1296, S = 1.055, R = 0.0393 and wR = 0.1185 for 4876 observed reflections with I 〉 2σ(I). One 9 mium ion which is five-coordinated by three chloride ions and two nitrogen atoms from bppb. Two cadmium ions are bridged by two chloride ions. The Cd_2(bppb)_2 Cl_2(μ-Cl_2) decomposes at 350 ℃ which is much lower by 70 ℃ than [Cd_2(bpbb)_2 Cl_2(μ-Cl_2)](420 ℃). The complex emits blue luminescence in both DMF solution and solid powder. Phenyl ring substituting NH hydrogen atom of benzimidazole group in ligand can not obviously change the UV-vis and luminescence spectra peaks location of the benzimidazole cadmium complex.
基金This work was supported by the National Natural Science Foundation of China (No. 20331010 and 20571045) Natural Science Foundation of Tianjin (No. 043602211)
文摘Two novel complexes {[Zn(IM4py)2(tp)(H2O)]2H2O}. 1 and {[Cd(IM4py)2(tp)- (H2O)]1.25H2O},, 2 (IM4py = 2-(4'-pyridinyl)-4,4,5,5-tetramethylimidazoline-l-oxyl and tp = terephthalate dianion) have been synthesized and characterized by elemental analyses, IR spectrum and single-crystal X-ray diffraction. Crystal data for complex I: monoclinic, space group C2/c, a = 20.648(7), b = 12.130(4), c = 14.036(4) A, β = 106.351(5)°, C32H42N6O9Zn, Mr = 720.09, V = 3373.3(2) A3, Z= 4, Dc = 1.418 g/cm^3μt(MoKα) = 0.790 mm^-1, F(000) = 1512, the final R = 0.0407 and wR = 0.0894 for 3480 independent reflections with Rint = 0.0432. Crystal data for complex 2: monoclinic, space group C2/c, a = 21.332(6), b = 12.063(3), c = 14.246(4) A, β = 106.704(4)°, C32H40.50N6O8.25Cd, Mr = 753.60, V= 3511.2(2) A^3, Z = 4, Dc = 1.426 g/cm^3,μ(MoKα) = 0.679 mm^--1, F(000) = 1554, the final R = 0.0419 and wR = 0.0961 for 3627 independent reflections with Rint = 0.0440. The framework structures of complexes 1 and 2 are 3-D networks via the hydrogen bonds among 1-D chains. The notable characteristics of the two complexes are that the coordination polyhedron of Zn(Ⅱ) adopts a rare distorted five-coordinate square pyramidal geometry in 1, and the Cd(Ⅱ) complex exhibits an unusual distorted seven-coordinate pentagonal bipyramid in 2.
基金Supported by the Key Subject of Huangshan University (No. 2007xkjq013)
文摘The two title complexes [{Cd(IBG-CH3)(4,4'-bipy)(H2O)2}·NO3]n 1 and [{Cd(IBG)- (4,4'-bipy)(H2O)2}·2H2O]n 2 (H2IBG = isophthaloylbisglycine and 4,4'-bipy = 4,4'-bipyridine) have been synthesized and characterized by single-crystal structure determination,IR and TG analyses. Complex 1 crystallizes in monoclinic,space group C2/c with a = 27.221(2),b = 11.6093(7),c = 16.3571(9)A,V = 5149.2(6) A^3,Z = 8,C23H23N5O11Cd,Mr = 657.86,Dc = 1.697 g/cm^3,F(000) = 2656.00,μ(MoKα) = 0.919 mm^-1,the final R = 0.0478 and wR = 0.0882 for 3728 observed reflections with I 〉 2σ(I). Complex 2 crystallizes in triclinic,space group Pī with a = 9.0940(4),b = 11.6852(5),c = 13.1119(6)A,V = 1230.26 A^3,Z = 2,C22H26N4O10Cd,Mr = 618.87,Dc = 1.671 g/cm^3,F(000) = 628.0,μ(MoKα) = 0.951 mm^-1,the final R = 0.0567 and wR = 0.1124 for 3713 observed reflections with I 〉 2σ(I). In both structures,the CdII metal centers are coordinated by seven atoms to form a distorted pentagonal bipyramidal geometry.
文摘The crystal of the title complex with formula C48H52N8O16CI2Cd3(Mr=1405. 10) was crystallized in monoclinic, space group P21/n, with a=12. 666 (3), b=18. 306(6), c=13. 231 (4) A, p=111. 68(3), V=2851 (2) A3, Z=2, Dr=1. 637 g/cm-3 p=12. 680 cm-1, F(000)=1404. The final refinement is convergedwith R=0. 052 and Rw=0. 055. In the molecule [Cd3(py8(Oac)4] (CIO4)2, the aver-age values of Cd-N and Cd-O bonds are 2. 306 and 2. 288 A, respectively. In thecanon of the title complex. each Cd atom is coordinated by N and O atoms, which arefrom pyridine molecules and acetatoes, respectively, to form a distorted octahedron.And three Cd atoms are linked by two u2-O atoms of two acetatoes and other two u-ac-etato side bridges.
基金Supported by the National Natural Science Foundation of China(No.20971065)the National Basic Research Program of China(No.2010CB923303)
文摘A new polymeric complex {[Cd2(bbmb)2(gt)2]'(H2O)2}, (bbmb = 4,4'-bis(benzimidazol-l-ylmethyl)biphenyl, H2gt = glutaric acid) has been obtained by hyclrothermal method and structurally characterized by elemental analysis, IR, XRD, TGA and single-crystal X-ray diffraction. The complex belongs to the triclinic system, space group P1 with a = 10.2417(15), b = 13.752(2), c = 22.201(3) A, a = 73.899(2), β = 88.416(2), y = 78.305(2)°, V = 2940.4(7) A3, Z = 2, C66H56Cd2N808, Mr = 1313.99, Dc = 1.484 g/cm3, F(000) = 1336 and μ = 0.787 mm-1, and features a 2D network. In the solid state at room temperature, the cadmium(Ⅱ) complex exhibits strong fluorescence absorption at 435 nm (λmax).
基金the grants from the State Key Program of China the National Natural Science Foundation of China (29871001 20071001) and the Committee of Education of Anhui province
文摘A novel complex [Cd2(phen)4(fca)2](ClO4)2(H2O)2 (fca = dianion of 3-ferrocenyl- 2-crotonic acid, phen = 1,10-phenanthroline) has been synthesized and characterized by X-ray single-crystal structure analysis. It crystallizes in triclinic system, space group P?with a = 11.6297(5), b = 12.5165(5), c = 13.8986(6) ? a = 63.345(1), b = 87.747(1), g = 71.862(1), V = 1706.20(1) ?, Z = 1, Dc = 1.673 g/cm3, F(000) = 868 and m(MoKa) = 1.185 mm-1 (l = 0.71073 ). R = 0.0800 and wR = 0.1793 for 7653 observed reflections (I > 2s(I)). The structure consists of a dinuclear cation [Cd2(phen)4(fca)2]2+, two discrete perchlorate anions and two water molecules. The cationic part of the complex shows a tetrametallic core in which two fca groups act as the (O, O) bridging ligands between two cadmium(Ⅱ) ions with a distorted octahedral environment. The Cd…Cd intradimer distance is 4.128 ?
基金supported by the National Natural Science Foundation of China(No.51302067)the Team of Guangdong Ocean University(No.1312435)
文摘One new luminescent material of complex {[Cd(DPA)(H_2O)_2]·(H_2O)_2}_n(1) was synthesized by evaporation methods using 3,3A-thiodipropionic acid(DPA) and cadmium nitrate as the starting materials. Compound 1 crystallizes in the monoclinic system,space group P2_1/n with a = 7.5460(7),b = 13.372(3),c = 12.304(3) A,β = 95.95(3)o,V = 1234.8(4) A^3,D_c = 1.940 g/cm^3,C_6H_(16)O_8 SCd,M_r = 360.65,F(000) = 720,μ(Mo Ka) = 1.960 mm^-1,Z = 4,R = 0.0460 and wR = 0.1185 for 1835 observed reflections(I 〉 2σ(I)),and R = 0.0591,wR = 0.1245 for all data. The complex has been characterized by elemental analysis,FT-IR,TG,PXRD and X-ray single-crystal structure analysis and the fluorescence property has also been studied. As a result,complex 1 possesses a two-dimensional(2-D) structure through DPA ligands interconnecting Cd2+ ions. Complex 1 emits the intense fluorescence of 420 nm in the solid state at room temperature.
基金This work was supported by the Natural Science Foundation of Guangxi Province (No. 0229004)
文摘Two new ternary complexes [Zη(3-aba)2(phen)]·2.58H2O 1 and {[Cd(3-aba)- (phen)2]·(NO3)·(1.5H2O) }n 2 (3-aba = 3-aminobenzoic acid anion, phen = 1,10-phenanthroline) were synthesized and characterized by elemental analysis, IR, UV spectrum and X-ray diffraction. Complex 1 crystallizes in the rhombohedral system, space group R3 with a = 3.5733(3), b = 3.5733(3), c = 1.1231(2) nm; V= 12.419(3) nm^3, C26H25.17NaO6.58Zn, Mr= 564.37, Z= 18, F(000) = 5253, μ= 0.937 mm^-1, Dc = 1.358 g/cm^3, R = 0.0668 and wR = 0.1690 for 2424 observed reflections (I〉 2σ(I)). Complex 2 belongs to the tetragonal system, space group P4/ncc with a = 2.88451(10), b = 2.88451(10), c = 1.55571(11) nm, V= 12.9441(11) nm^3, C31H25CdN6O6.50, Mr = 697.97, Z = 16, F(000) = 5648,μ=0.727 mm^-1, Dc= 1.433 g/cm^3, R = 0.0607 and wR = 0.1742 for 3468 observed reflections (I 〉 2σ(I)). Complex 1 displays a mononuclear structure. The carboxylate group of 3-aminobenzoic acid anion coordinates to Zn(Ⅱ) in a chelating bidentate mode, and the nitrogen atom of the ligand does not involve in coordination. Complex 2 exhibits a one-dimensional chain structure with 3-aminobenzoic acid anion coordinating to Cd(Ⅱ) in a μ2-bridging mode through its nitrogen atom and one of its oxygen atoms.
基金Project (No. 29832030, 2982001) supported by the National Natural Science Foundation of China.
文摘A novel pentaazadentate bismacrocycle was synthesized through an improved procedure of 1:1 Schiff base condensation of diformyltripyrrane with 3, 4, 3', 4'-tetraamino-biphenyl hydrochloride using Pb2+ as template ion, in which the condensed byproduct water was removed efficiently to make the yield over 90%. Then the bismacrocyclic ligand reacted with cadmium chloride to Field the title metal complex with molecular weight being 1200.4 by TOF MS and the lambda(max) being 766 nm.
基金This work was supported by the NSF for Distinguished Young Scientist of China (20425104) and the NSF of Fujian Province (2005I017, A0420002)
文摘A new flexible double betaine L (L = 1,4-bis(pyridinio-4-carboxylato-N-methyl)benzene, C20H16N2O4) and its cadmium(Ⅱ) complex [Cd(H2O)aL(NO3)]NO3.H2O 1 were synthesized. Complex 1 was obtained by self-assembly reaction of [Cd(NO3)2]-4H2O and L in hot water,and its crystal structure was determined by single-crystal X-ray diffraction analysis. Crystallographic data for complex 1: C20H24CdN4O14.H2O, Mr = 674.85, monoclinic, space group P21/c, a =13.7854(3), b = 14.2820(3), c = 14.9188(4) ,A°, β = 116.418(1)°, V = 2630.5(1)A°^3, Z = 4, Dc= 1.704g/cm^3,/J(MoKα) = 0.911 mm^-1, F(000) = 1368, the final R = 0.0315 and wR = 0.0768 for 3637 observed reflections with I 〉 2σ(I). In complex 1, L acts as a monodentate ligand to link a Cd(Ⅱ) ion in a novel coordination mode of double betaines. The mononuclear [Cd(H2O)aL(NO3)] units are connected through intermolecular hydrogen bonds and π-π stacking reactions to generate a 3D network.
基金Fund of Science and Technology Committee of Hunan Province(No.2012GK3030)Scientific Research Fund of Hunan Provincial Education Department(No.11C0186)+1 种基金Hengyang Bureau of Science and Technology(No.2011kG28)the Key Discipline Project of Hunan Province
文摘A new Cd(II) complex [Cd(C12H6OaN2)(Phen)ffH2O)]'3H2O with 2,2"-bipyridine- 3,3"-dicarboxylic acid as a ligand has been synthesized. Crystal data for the title complex are as follows: monoclinic, space group P2dn, a = 12.8458(5), b = 17.9131(7), c = 15.2960(6) A, β = 111.7430(10)°, V = 3269.3(2) A3, Dc = 1.581 g/cm3, Z = 4,/a(MoKa) = 0.731 mm-1, F(000) = 1580, the R = 0.0244 and wR = 0.0605. In the title complex, the central Cd(ll) ion is located in a distorted octahedral coordination environment. The electrochemical and fluorescent properties of the title complex were studied. The results show that the electron transfer of the title complex is irreversible in the electrode reaction and it has a broad emission peak in the range of 470-508 nm with the excitation wavelength of 488 nm.
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Supported by the Program for New Century Excellent Talents in University(NCET-10-0176)the Natural Science Foundation of Jilin Province(No.20130521019JH)the fund of Jilin Provincial Education Department of China(No.2014154)
文摘Two new metal-organic complexes [Cd2(1,4-BDC)(4-pytyp)(H2O)4]·(1,4-BDC)(1) and [Cu2(1,4-BDC)(4-pytyp)2(H2O)2]·(1,4-BDC)·8H2O(2)(4-pytyp = 4'-(4''-pyridyl)-2,2':6',2''-terpyridine, 1,4-H2 BDC = 1,4-benzenedicarboxylic acid) have been synthesized under hydrothermal conditions and characterized by elemental analysis, infrared analysis and X-ray single-crystal diffraction. The scrutiny of single-crystal structure reveals that complex 1 forms to a 3D supramolecular network linked by π-π stacking interactions and hydrogen bonds. X-ray diffraction analysis reveals that complex 2 exhibits a 3D supramolecular network linked through complicated hydrogen bonds. The thermogravimetric analysis and photoluminescent properties of 1 and 2 are discussed in detail.
基金supported by NNSFC (20971085)"973" Programs (2007CB209701 and 2009CB930403)the Key Project and Scientific Research Foundation for the Returned Overseas Chinese Scholars of State Education Ministry
文摘Two homochiral mercury (1) and cadmium (2) complexes derived from chiral twisted biphenyl pyridine ligand (3,3'-bipyridine-5,5',6,6'-tetramethyl-2,2'-dimethoxy-1,1'-biphenyl) have been synthesized and characterized by IR, microanalysis, TGA, UV-Vis, powder and single-crystal X-ray crystallography. Both 1 and 2 crystallize in orthorhombic space group P21212 with Z = 2. For 1, a = 14.2038(16), b = 14.3630(17), c = 7.0257(8), V = 1433.3(3)3, Mr = 878.91, Dc = 2.037 g/cm3, μ = 7.549 mm-1, F(000) = 824, the final GOF = 1.017, R = 0.0296 and wR = 0.0645 for 2925 observed reflections with I 2σ(I). For 2, a = 14.212(3), b = 14.392(3), c = 7.0498(14), V = 1442.0(5)3, Mr = 790.72, Dc = 1.821 g/cm3, μ = 2.924 mm–1, F(000) = 760, the final GOF = 1.075, R = 0.0340 and wR = 0.0834 for 3144 observed reflections with I 2σ(I). The crystal structures of 1 and 2 are isostructural and each adopts a two-dimensional supramolecular network which contains the C–H···π interactions.
基金This project was supported by the National Natural Science Foundation of China(No.50372028)
文摘A new bicadmium(??) complex [Cd2L](ClO4)2?1.25H2O (C28H35Cd2Cl4N6O13.25) was synthesized and characterized by X-ray diffraction and ES mass spectral analyses. It crystallizes in the triclinic system, space group P1 with a = 15.630(3), b = 15.990(3), c = 16.330(3) ?, α = 89.90(3), β = 68.87(3), γ = 87.94(3)o, V = 3804.1(13) ?3, Mr = 1034.22, Z = 4, F(000) = 2060, Dc = 1.806 g/cm3, T = 293(2) K, μ = 1.468 mm-1 and λ = 0.71073 ?. The structure was refined to R = 0.0779 and wR = 0.1960 for 7034 observed reflections with I > 2σ(I).