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化学学报
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化学学报 ›› 2007, Vol. 65 ›› Issue (18): 2014-2018. 上一篇    下一篇

研究论文

小分子配体诱导合成N,N-二苄基二硫代氨基甲酸镉(II)配合物及晶体结构

范军1, 韦凤仙1, 章伟光*,1, 殷霞1, LAI, Chian-Sing2, TIEKINK, Edward R.T.2   

  1. (1华南师范大学化学与环境学院 广州 510006)
    (2新加坡国立大学化学系 新加坡 117543)
  • 投稿日期:2007-01-22 修回日期:2007-04-16 发布日期:2007-09-28
  • 通讯作者: 章伟光

Small Ligands-Induced Synthesis of Cadmium Complexes with N,N-Dibenzyl Dithiocarbamate and Their Crystal Structures

FAN Jun1; WEI Feng-Xian1; ZHANG Wei-Guang*,1; YIN Xia1; LAI Chian-Sing2; TIEKINK Edward R. T.2   

  1. (1 School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China)
    (2 Department of Chemistry, National University of Singapore, 117543, Singapore)
  • Received:2007-01-22 Revised:2007-04-16 Published:2007-09-28
  • Contact: ZHANG Wei-Guang

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4,4'-联吡啶与二苄基二硫代氨基甲酸镉配合物[Cd(DBTC)2]2 (1)反应得到加合物[Cd(DBTC)2(4,4'-bipy)] (2) (DBTC＝N,N-二苄基二硫代氨基甲酸), 通过晶体结构分析及红外光谱等研究其结构与性质. 结果表明: 引入小分子配体会破坏[Cd(DBTC)2]2 (1)的二聚结构, 加入吡啶则得到单核的吡啶加合物[Cd(DBTC)2py] (3), 而引入4,4'-联吡啶后其结构变为新型的一维链状结构的配位聚合物2, 这种结构在二硫代氨基甲酸金属配合物中少见报道. 也比较了不同配体如吡啶及4,4'-联吡啶对Cd(II)及Zn(II)配合物结构的影响.

关键词: 二硫代氨基甲酸, 镉配合物, 组装, 晶体结构

A Cd(II) adduct [Cd(DBTC)2(4,4'-bipy)] (2) was synthesized by mixing 4,4'-bipyridyl with the precursor [Cd(DBTC)2]2 (1) (DBTC＝N,N-dibenzyl dithiocarbamate anion) and characterized by X-ray crystallography structural analysis and IR spectra respectively. The dimer complex [Cd(DBTC)2]2 (1) has been destroyed to produce new adducts after adding new small ligands. The structure of [Cd(DBTC)2py] (3) obtained by adding pyridine into [Cd(DBTC)2]2 (1) was showed as mononuclear complex and it was interesting that [Cd(DBTC)2(4,4'-bipy)] (2) obtained by adding 4,4'-bipy was showed as a 1-D chain coordination polymer, to the best of our knowledge, which has been scarcely reported in dithiocarbamate metal complexes. Spacer-induced self-assembly of Cd(II) complexes has been successfully carried out by adding the suitable small molecule ligands. The effect on the structures of Cd(II) and Zn(II) complexes by adding different spacers such as pyridine and 4,4'-bipy has been also discussed.

Key words: dithiocarbamate, cadmium complex, assembly, crystal structure