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 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
A new structure with the molecular formula [CdL]n was formed by CdSO4 with 4-carboxymethoxy phenylacetic acid (H2L) through the hydrothermal method. The complex was characterized by elemental analysis and infrared s...A new structure with the molecular formula [CdL]n was formed by CdSO4 with 4-carboxymethoxy phenylacetic acid (H2L) through the hydrothermal method. The complex was characterized by elemental analysis and infrared spectroscopy. The structure of the complex was determined by single-crystal X-ray diffraction, which is of monoclinic system, space group P21/c with a = 10.3887(2), b = 7.10710(10), c = 14.7212(2) , β = 120.6940(10)°, V = 934.65(3) 3, Dc = 2.278 g·cm-3, Z = 4, F(000) = 624, S = 1.022, the final R = 0.0187 and wR = 0.0487 for 2000 observer reflections (Ⅰ 〉 2σ(Ⅰ)). The center metal ion Cd(Ⅱ) in the complex is six-coordinated in a distorted octahedral geometry, and is connected with L ligands to form a 3D fishing net structure, which is a novel (3,6) network topology. The luminescence of the complex has been investigated, and the result reveals that it displays luminescent property in the voilet region.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
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 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 title complex, formulated as {[Cd(pda)(phen)]·3H2O}, 1 (pda = 1,4-phenylenediacetate, phen = 1,10′-phenanthroline), has been hydrothermally synthesized and determimned by X-ray crystallography. Crystal...The title complex, formulated as {[Cd(pda)(phen)]·3H2O}, 1 (pda = 1,4-phenylenediacetate, phen = 1,10′-phenanthroline), has been hydrothermally synthesized and determimned by X-ray crystallography. Crystallographic data: triclinic, space group P1^-, a = 10.375 (7), b = 10.435(1), c = 12.040(1) A.α = 68.503(1), ,β= 86.371(1), γ= 66.231(1)°, Mr = 538.82, V = 1104.5(8) ,A^3, Z = 2, Dc = 1.620 g/cm^3,μ = 1.035 mm^-1, F(000) = 544, the final R = 0.0380 and wR = 0.0985 (w = 1/[σ^2(F0^2) + (0.0559P)^2 + 1.5319P], where P = (F0^2+ 2Fc^2)/3) based on 3444 observed reflections with I 〉2σ(I). Complex 1 features a two-dimensional layer. Fluorescent analysis reveals that it exhibits intense green luminescence with the maximum at around 516 nm.展开更多
Hydrothermal reaction of 1,10-phenanthroline with CdCl2·2.5H2O in aqueous solution leads to the complex of [Cd(μ-Cl)2(phen)]n (phen = 1-10-phenanthroline). The crystal structure has been determined by X-ray anal...Hydrothermal reaction of 1,10-phenanthroline with CdCl2·2.5H2O in aqueous solution leads to the complex of [Cd(μ-Cl)2(phen)]n (phen = 1-10-phenanthroline). The crystal structure has been determined by X-ray analysis. It crystallizes in monoclinic with space group C2/c, a = 16.947(3), b = 10.529(2), c = 7.235(1) , β = 110.795(3)°, V = 1208.8(3) 3, Z = 4, Dc = 1.997 g.cm-3, μ= 2.22 mm-1, F(000) = 704, R = 0.0231, Rw = 0.0626 for 1194 reflections with I > 2σ (I). In the crystal structure, the [Cd(phen)]2+ units are bridged by chloride ions to form 1D chain. The 1D chains combine through π……π interactions of phen groups to form 2D infinite molecular zipper.展开更多
The reaction of 6,7-dicyanodipyridoquinoxaline (DICNQ) with AgNO3 in a 1:1 molar ratio by solution method gave a new complex [Ag(DICNQ)2]NO3 1. Single-crystal X-ray diffraction analysis reveals that the complex c...The reaction of 6,7-dicyanodipyridoquinoxaline (DICNQ) with AgNO3 in a 1:1 molar ratio by solution method gave a new complex [Ag(DICNQ)2]NO3 1. Single-crystal X-ray diffraction analysis reveals that the complex crystallizes in the space group Ibca of orthorhombic system with eight formula units in a cell. Crystal data for 1: a = 15.7055(17), b = 18.411(2), c = 20.680(2)A, V = 5979.7(11)A3, Z = 8, C32Hl2AgN13O3, Mr = 734.42, Dc = 1.632 g/cm3, μ= 0.734 mm-1, F(000) = 2928, S = 1.023 and T= 293(2) K. The final R = 0.0659 and wR = 0.1927 for 2118 observed reflections with I 〉 2σ(I), and R = 0.0801 and wR = 0.2196 for all data. The complex builds up a packing structure by π-π stacking interactions and shows a luminescent feature.展开更多
Under hydrothermal condition, the reaction of 2-naphthoxyacetic acid with ZnCl2 and 4,4′-bipyridine (4,4′-bipy) has afforded a new Zn(Ⅱ) compound, [Zn(C12H9O3)2(C10H8N2)]n·nH2O1, which was structurally...Under hydrothermal condition, the reaction of 2-naphthoxyacetic acid with ZnCl2 and 4,4′-bipyridine (4,4′-bipy) has afforded a new Zn(Ⅱ) compound, [Zn(C12H9O3)2(C10H8N2)]n·nH2O1, which was structurally characterized by single-crystal X-ray diffraction analysis. The crystal is of monoclinic, space group P21/c with a = 7.7335(2), b = 19.3834(4), c = 20.1707(4) A, β = 104.9830(10)°, V = 2920.82(11) A^3, C34H28ZnN2O7, Mr = 641.95, Z = 4, Dc = 1.460 g/cm^3,μ = 0.895 mm^-1, F(000) = 1328, R = 0.0406 and wR = 0.0876 for 4417 observed reflections (I〉 2σ(I)) Complex 1 consists of one-dimensional zigzag chains deriving from Zn(C12H9O3)2 units linked by 4,4′-bipy ligands, and lattice water molecules decorate between the chains. Non-covalent interactions, such as hydrogen-bonding and aromatic π-π interactions, lead to the formation of a 3D network structure. The thermogravimetric analysis (TGA) and luminescent property for 1 have also been studied in this paper.展开更多
Hydrothermal reaction of Cd(NO3)2·4H2O with bbp and p-PDOAH2 at 140 ℃ yielded a novel 1D cadmium(Ⅱ) coordination polymer, [Cd(bbp)(p-PDOA)]n (bbp=2,6-bis(benzimidazol-2-yl)pyridine, p-PDOA=p-phenylen...Hydrothermal reaction of Cd(NO3)2·4H2O with bbp and p-PDOAH2 at 140 ℃ yielded a novel 1D cadmium(Ⅱ) coordination polymer, [Cd(bbp)(p-PDOA)]n (bbp=2,6-bis(benzimidazol-2-yl)pyridine, p-PDOA=p-phenylenedioxydiacetate dianion), in which CdN3O4 pentagonal bipyramids were linked by p-PDOA ligands in a bis-bidentate mode to construct a zigzag chain with the adjacent Cd…Cd distance of 1.14(1) nm, There exists a 2D supramolecular network linked by π-π stacking with a face-to-face distance of 0.35(1) nm between the 2,6-bis(benzimidazol-2-yl) pyridine ligands and hydrogen-bonding interactions (0.27(4) nm). A 3D supramolecular network was further constructed by these non-covalent interactions between the zippers. The TG/DTG showed that its chain skeleton was thermally stable up to 389 ℃ and the blue fluorescent emission of the complex was determined at 428 nm in a solid state with its long decay lifetime of 7.24 ns.展开更多
A novel complex [Cd2(phen)4(phth)2]·4H2O has been synthesized by the reaction of Hzphth(phthalic acid) and phen(1,10-phenanthroline) with Cd(Ⅱ) in ethanol-water solution. X-ray crystal structure analys...A novel complex [Cd2(phen)4(phth)2]·4H2O has been synthesized by the reaction of Hzphth(phthalic acid) and phen(1,10-phenanthroline) with Cd(Ⅱ) in ethanol-water solution. X-ray crystal structure analysis shows it crystallizes in triclinic, space group PI- with a = 10.619(3), b = 12.560(4), c = 12.651(4) A, a = 98.775(5), β = 109.035(5),γ = 113-576(5)°, C32H24CdN4O6, Mr= 672.95, V = 1381.7(7)A^3, Rint = 0.0358, Z = 2, Dc= 1.618 g/cm^3,μ = 0.845 mm^-1, -6 ≤h≤13, -15 ≤k ≤13, -15 ≤l≤14, F(000) = 680, S = 1.038, R = 0.0480 and wR = 0.0849 for 3992 observed reflections (1 〉 2σ(Ⅰ)). Phth bridges Cd(Ⅱ) to form a macrocyclic compound, and a 2D supramolecular motif is formed through hydrogen bonds and π-π interaction.展开更多
A novel complex [Cd4(HCAM)4(H2O)8] of Cd(Ⅲ) withchelidamic acid (H3CAM) was synthesized by the hydrothermal method and characterized with IR and emission spectra.The crystal structure was determined based on ...A novel complex [Cd4(HCAM)4(H2O)8] of Cd(Ⅲ) withchelidamic acid (H3CAM) was synthesized by the hydrothermal method and characterized with IR and emission spectra.The crystal structure was determined based on single-crystal X-ray diffraction data.It crystallizes in monoclinic,space group C2/c with a=17.538(5),b=12.916(4),c=16.505(7),β=100.690(14)o,V=3674(2) 3,Z=8,C14 H14 Cd2N2O14,Mr=659.07,Dc=2.383 g/cm 3,μ=2.400 mm-1,S=1.000,F(000)=2560,the final R=0.0242 and wR=0.0581 for 3656 observed reflections with I〉2σ(I).The inhibition of the complex against K562 and HL60 cells was determined by MTT assay.The results showed that the concentration of complex was positively correlated with inhibitions against K562 and HL60 cell lines,but inhibitory effects are relatively weak.IC 50 concentration of the title complex on K562 and HL60 cells is 15 and 5 μg/mL,respectively.展开更多
Four lanthanide coordination complexes, namely, [Ln(2,3-DClBA)3(5,5’-dmebipy)(H2O)]2(Ln=Sm(1), Eu(2), Dy(3), Ho(4)); 2,3-DClBA=2,3-dichlorobenzoate; 5,5’-dmebipy=5,5’-dmethylbipyridine) were synthe...Four lanthanide coordination complexes, namely, [Ln(2,3-DClBA)3(5,5’-dmebipy)(H2O)]2(Ln=Sm(1), Eu(2), Dy(3), Ho(4)); 2,3-DClBA=2,3-dichlorobenzoate; 5,5’-dmebipy=5,5’-dmethylbipyridine) were synthesized and characterized by elemental analysis, infrared spectroscopy and single crystal X-ray diffraction. Findings indicated that complex 3 was a dinuclear molecule, and the center Dy3+ was eight-coordinated. Each dinuclear units could be connected by H bond and halogen-halogen interactions. Luminescent property of complex 2 suggested the typical intense emissions of Eu3+ ions. Thermal analysis showed that the complexes decomposed in three steps: the coordination water was lost firstly then the neutral ligand 5,5’dmebipy was lost and lastly the 2,3-DClBA ligand was lost.展开更多
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Supported by the Natural Science Foundation of Zhejiang Province (Y12B010003)
文摘A new structure with the molecular formula [CdL]n was formed by CdSO4 with 4-carboxymethoxy phenylacetic acid (H2L) through the hydrothermal method. The complex was characterized by elemental analysis and infrared spectroscopy. The structure of the complex was determined by single-crystal X-ray diffraction, which is of monoclinic system, space group P21/c with a = 10.3887(2), b = 7.10710(10), c = 14.7212(2) , β = 120.6940(10)°, V = 934.65(3) 3, Dc = 2.278 g·cm-3, Z = 4, F(000) = 624, S = 1.022, the final R = 0.0187 and wR = 0.0487 for 2000 observer reflections (Ⅰ 〉 2σ(Ⅰ)). The center metal ion Cd(Ⅱ) in the complex is six-coordinated in a distorted octahedral geometry, and is connected with L ligands to form a 3D fishing net structure, which is a novel (3,6) network topology. The luminescence of the complex has been investigated, and the result reveals that it displays luminescent property in the voilet region.
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.
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This work was supported by the National Natural Science Foundation of China (No. 20231020) and Natural Science Foundation of Fujian Province
文摘The title complex, formulated as {[Cd(pda)(phen)]·3H2O}, 1 (pda = 1,4-phenylenediacetate, phen = 1,10′-phenanthroline), has been hydrothermally synthesized and determimned by X-ray crystallography. Crystallographic data: triclinic, space group P1^-, a = 10.375 (7), b = 10.435(1), c = 12.040(1) A.α = 68.503(1), ,β= 86.371(1), γ= 66.231(1)°, Mr = 538.82, V = 1104.5(8) ,A^3, Z = 2, Dc = 1.620 g/cm^3,μ = 1.035 mm^-1, F(000) = 544, the final R = 0.0380 and wR = 0.0985 (w = 1/[σ^2(F0^2) + (0.0559P)^2 + 1.5319P], where P = (F0^2+ 2Fc^2)/3) based on 3444 observed reflections with I 〉2σ(I). Complex 1 features a two-dimensional layer. Fluorescent analysis reveals that it exhibits intense green luminescence with the maximum at around 516 nm.
文摘Hydrothermal reaction of 1,10-phenanthroline with CdCl2·2.5H2O in aqueous solution leads to the complex of [Cd(μ-Cl)2(phen)]n (phen = 1-10-phenanthroline). The crystal structure has been determined by X-ray analysis. It crystallizes in monoclinic with space group C2/c, a = 16.947(3), b = 10.529(2), c = 7.235(1) , β = 110.795(3)°, V = 1208.8(3) 3, Z = 4, Dc = 1.997 g.cm-3, μ= 2.22 mm-1, F(000) = 704, R = 0.0231, Rw = 0.0626 for 1194 reflections with I > 2σ (I). In the crystal structure, the [Cd(phen)]2+ units are bridged by chloride ions to form 1D chain. The 1D chains combine through π……π interactions of phen groups to form 2D infinite molecular zipper.
基金supported by NNSFC (20701037)a Key Project from the CAS (KJCX2-YW-H01)the NSF of Fujian Province (E0510029)
文摘The reaction of 6,7-dicyanodipyridoquinoxaline (DICNQ) with AgNO3 in a 1:1 molar ratio by solution method gave a new complex [Ag(DICNQ)2]NO3 1. Single-crystal X-ray diffraction analysis reveals that the complex crystallizes in the space group Ibca of orthorhombic system with eight formula units in a cell. Crystal data for 1: a = 15.7055(17), b = 18.411(2), c = 20.680(2)A, V = 5979.7(11)A3, Z = 8, C32Hl2AgN13O3, Mr = 734.42, Dc = 1.632 g/cm3, μ= 0.734 mm-1, F(000) = 2928, S = 1.023 and T= 293(2) K. The final R = 0.0659 and wR = 0.1927 for 2118 observed reflections with I 〉 2σ(I), and R = 0.0801 and wR = 0.2196 for all data. The complex builds up a packing structure by π-π stacking interactions and shows a luminescent feature.
基金Supported by the Foundation of Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces (No. 0506)Department of Education of Zhejiang Province (No. 20071374)
文摘Under hydrothermal condition, the reaction of 2-naphthoxyacetic acid with ZnCl2 and 4,4′-bipyridine (4,4′-bipy) has afforded a new Zn(Ⅱ) compound, [Zn(C12H9O3)2(C10H8N2)]n·nH2O1, which was structurally characterized by single-crystal X-ray diffraction analysis. The crystal is of monoclinic, space group P21/c with a = 7.7335(2), b = 19.3834(4), c = 20.1707(4) A, β = 104.9830(10)°, V = 2920.82(11) A^3, C34H28ZnN2O7, Mr = 641.95, Z = 4, Dc = 1.460 g/cm^3,μ = 0.895 mm^-1, F(000) = 1328, R = 0.0406 and wR = 0.0876 for 4417 observed reflections (I〉 2σ(I)) Complex 1 consists of one-dimensional zigzag chains deriving from Zn(C12H9O3)2 units linked by 4,4′-bipy ligands, and lattice water molecules decorate between the chains. Non-covalent interactions, such as hydrogen-bonding and aromatic π-π interactions, lead to the formation of a 3D network structure. The thermogravimetric analysis (TGA) and luminescent property for 1 have also been studied in this paper.
基金Project supported by the National Natural Science Foundation of China (Nos. 30460153, 20561001) and the Natural Science Foundation of Guangxi Province (No. 0447019).
文摘Hydrothermal reaction of Cd(NO3)2·4H2O with bbp and p-PDOAH2 at 140 ℃ yielded a novel 1D cadmium(Ⅱ) coordination polymer, [Cd(bbp)(p-PDOA)]n (bbp=2,6-bis(benzimidazol-2-yl)pyridine, p-PDOA=p-phenylenedioxydiacetate dianion), in which CdN3O4 pentagonal bipyramids were linked by p-PDOA ligands in a bis-bidentate mode to construct a zigzag chain with the adjacent Cd…Cd distance of 1.14(1) nm, There exists a 2D supramolecular network linked by π-π stacking with a face-to-face distance of 0.35(1) nm between the 2,6-bis(benzimidazol-2-yl) pyridine ligands and hydrogen-bonding interactions (0.27(4) nm). A 3D supramolecular network was further constructed by these non-covalent interactions between the zippers. The TG/DTG showed that its chain skeleton was thermally stable up to 389 ℃ and the blue fluorescent emission of the complex was determined at 428 nm in a solid state with its long decay lifetime of 7.24 ns.
基金The project was supported by the NSF of Liaoning Province (No. 20022018)
文摘A novel complex [Cd2(phen)4(phth)2]·4H2O has been synthesized by the reaction of Hzphth(phthalic acid) and phen(1,10-phenanthroline) with Cd(Ⅱ) in ethanol-water solution. X-ray crystal structure analysis shows it crystallizes in triclinic, space group PI- with a = 10.619(3), b = 12.560(4), c = 12.651(4) A, a = 98.775(5), β = 109.035(5),γ = 113-576(5)°, C32H24CdN4O6, Mr= 672.95, V = 1381.7(7)A^3, Rint = 0.0358, Z = 2, Dc= 1.618 g/cm^3,μ = 0.845 mm^-1, -6 ≤h≤13, -15 ≤k ≤13, -15 ≤l≤14, F(000) = 680, S = 1.038, R = 0.0480 and wR = 0.0849 for 3992 observed reflections (1 〉 2σ(Ⅰ)). Phth bridges Cd(Ⅱ) to form a macrocyclic compound, and a 2D supramolecular motif is formed through hydrogen bonds and π-π interaction.
基金supported by the Education Foundation of Fujian Province (JA08103)
文摘A novel complex [Cd4(HCAM)4(H2O)8] of Cd(Ⅲ) withchelidamic acid (H3CAM) was synthesized by the hydrothermal method and characterized with IR and emission spectra.The crystal structure was determined based on single-crystal X-ray diffraction data.It crystallizes in monoclinic,space group C2/c with a=17.538(5),b=12.916(4),c=16.505(7),β=100.690(14)o,V=3674(2) 3,Z=8,C14 H14 Cd2N2O14,Mr=659.07,Dc=2.383 g/cm 3,μ=2.400 mm-1,S=1.000,F(000)=2560,the final R=0.0242 and wR=0.0581 for 3656 observed reflections with I〉2σ(I).The inhibition of the complex against K562 and HL60 cells was determined by MTT assay.The results showed that the concentration of complex was positively correlated with inhibitions against K562 and HL60 cell lines,but inhibitory effects are relatively weak.IC 50 concentration of the title complex on K562 and HL60 cells is 15 and 5 μg/mL,respectively.
基金supported by the National Natural Science Foundation of China(21073053,21473049)the Natural Science Foundation of Hebei Province,China(B2016205207)
文摘Four lanthanide coordination complexes, namely, [Ln(2,3-DClBA)3(5,5’-dmebipy)(H2O)]2(Ln=Sm(1), Eu(2), Dy(3), Ho(4)); 2,3-DClBA=2,3-dichlorobenzoate; 5,5’-dmebipy=5,5’-dmethylbipyridine) were synthesized and characterized by elemental analysis, infrared spectroscopy and single crystal X-ray diffraction. Findings indicated that complex 3 was a dinuclear molecule, and the center Dy3+ was eight-coordinated. Each dinuclear units could be connected by H bond and halogen-halogen interactions. Luminescent property of complex 2 suggested the typical intense emissions of Eu3+ ions. Thermal analysis showed that the complexes decomposed in three steps: the coordination water was lost firstly then the neutral ligand 5,5’dmebipy was lost and lastly the 2,3-DClBA ligand was lost.