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Synthesis, Crystal Structure and Luminescent Property of a Dinuclear cadmium complex Based on 1,2-Bis(1-phenyl-1H-benzo[d]imidazol-2-yl)benzene

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Chinese Journal of Structural Chemistry 2017年第8期36卷 1355-1360页

作者：潘荣楷刘生桂宋江莉李国璧苏文义倪春林 School of Chemistry and Chemical Engineering Lingnan Normal University College of Materials and Energy South China Agricultural University

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.

关键词： benzimidazole cadmium complex crystal structure luminescence

Synthesis, Crystal Structure and Luminescent Property of a Dinuclear cadmium complex Based on 1,2,3,4-Tetra(1H-benzo[d]imidazol-2-yl)butane

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Chinese Journal of Structural Chemistry 2015年第2期34卷 260-266页

作者：吴绮婷吴丽宾李国璧刘生桂潘荣楷苏文义黄倩文 School of Chemistry and Chemical Engineering Lingnan Normal University

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.

关键词： benzimidazole cadmium complex crystal structure luminescence

Spectrophotometric Investigation of cadmium complex Solutionwith m-Bromobenzenediazoaminoazobenzene

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Chinese Chemical Letters 1999年第11期10卷 957-960页

作者： Hong Wen GAO Lei WANG Hao YE(School of Chemistry and Chemical Engineering, Anhui University, Hefei 230039)(Department of Chemistry, Huaibei Coal Teachers College, Huaibei 235000) Anhui Univ Sch Chem & Chem Engn Hefei 230039 Peoples R China Huaibei Coal Teachers Coll Dept Chem Huaibei 235000 Peoples R China

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).

关键词： beta-correction principle cadmium complex m-bromobenzenediazoaminoazobenzene

Synthesis,Crystal Structure and Luminescent Property of cadmium complex Based on 2-(2-(1Hbenzo[d]imidazol-2-yl)benzyl)-1H-benzo[d]-imidazole

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Chinese Journal of Structural Chemistry 2014年第6期33卷 909-914页

作者：苏文义李国璧潘荣楷唐妃琼钟玲刘生桂 School of Chemistry Science and Technology Zhanjiang Normal University

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.

关键词： benzimidazole cadmium complex crystal structure luminescence

Crystal Structure and Photoluminescence of a New cadmium complex with 6,7-Dicyanodipyridoquinoxalin

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Chinese Journal of Structural Chemistry 2011年第3期30卷 324-329页

作者：陈慧芬姜小明王明盛杨琛吴美凤郭国聪黄锦顺 State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of Sciences Graduate School of Chinese Academy of Sciences

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.

关键词： cadmium complex crystal structure molecular interactions luminescence

Synthesis, Crystal Structure and Luminescent Property of a Dinuclear cadmium complex Based on 2-(2-(1H-Benzo[d]imidazol-2-yl)-phenyl)-1-phenyl-1H-benzo[d]imidazole

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Chinese Journal of Structural Chemistry 2018年第6期37卷 981-987页

作者：庞荣韬潘荣楷宋江莉林楚柔刘生桂 School of Chemistry and Chemical Engineering Lingnan Normal University

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.

关键词： benzimidazole cadmium complex crystal structure luminescence

Studies on the Interaction of Dinitratobis（phen） cadmium complex with DNA

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Chinese Journal of Chemistry 2007年第9期25卷 1267-1272页

作者：袁彩霞吴艳波魏毅斌杨频朱苗力 Institute of Molecular Science the Key Laboratory of Chemical Biology and Molecular Engineering of Education Ministry Shanxi University Taiyuan Shanxi 030006 China

DNA-binding properties of the dinitratobis（phen） cadmium complex [Cd（phen）2（NO3）2] （where phen = 1,10-phenanthroline） have been investigated with absorption titration, fluorescence spectroscopy, viscosity measurement, molecular modeling and density functional theory （DFT） calculations. The results indictate DNA-binding mode of the complex to be weak groove binding rather than partial intercalative interaction expected of the extended planar aromatic phen ring. In addition, the DNA cleavage study was carried out by gel electrophoresis experiment. The results showed that the complex both hardly cleaves pBR322 DNA in the absence and present ascorbate. So it is suggested that the formation of cadmium complex can decrease cadmium toxicity to some extents.

关键词： cadmium complex DNA interaction density functional theory (DFT)

Synthesis and Crystal Structure of cadmium(Ⅱ) complex [Cd(H_2O)(CH_3OC_6H_4COO)_2]_n

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Chinese Journal of Structural Chemistry 2002年第5期21卷 513-516页

作者：赵琦华马永平等 DepartmentofChemistry YunnanUniversityKunming650091China SchoolofPharmacy YunnanUniversityKunming650091China

At room temperature, the reaction of Cd(NO3)24H2O and anisic acid in an ethanol solution affords the cadmium (Ⅱ) complex [Cd(H2O)(CH3OC6H4COO)2]n. The crystal is of monoclinic, empirical formula C16H16O7Cd, Mr = 432.69, space group C2/c with parameters: a = 34.211(2), b = 6.030(2), c = 7.611(3) ? = 95.619(5)? V = 1562.5(9) ?, Z = 4, Dc = 1.831 g/cm3, = 1.434 mm-1, F(000) = 856, R = 0.0215 and wR = 0.0456. 1121 reflections with I ≥ 2s(I) were considered to be observed. Each cadmium atom is seven-coordinate in a distorted pentagonal bipyramidal geometry. The Cd (Ⅱ) center is doubly bridged with the neighboring Cd centers by anisate ligands to form a four-membered ring with a repeating unit of CdOCdO-. The extended structure and hydrogen-bonding patterns displayed in the complex were studied.

关键词： crystal structure polymeric complex cadmium complex anisic acid

Syntheses,Structures and Luminescent Properties of the cadmium(Ⅱ)complex with 3,3'-Thiodipropionic Acid

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Chinese Journal of Structural Chemistry 2017年第3期36卷 478-484页

作者： GU Chang-Sheng HAO Xiao-Min ZHANG Zhu-Yan JI Li-Li LI Yong SONG Wen-Dong Department of Applied Chemistry Guangdong Ocean University College of Pharmacy Harbin Medical University Innovation & Application Institute Zhejiang Ocean University

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.

关键词： cadmium complex 3,3'-thiodipropionic acid crystal structure