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

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.

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

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 inter- esting 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 com- plexes. 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 dif- ferent spacers such as pyridine and 4,4'-bipy has been also discussed.