Abstract

A series of cadmium(II) coordination compounds with bis(benzimidazol-2-yl)methane (L) is synthesized. Single crystals are obtained, and molecular and crystal structures of [Cd₄(L)₄Cl₆(EtOH)_0.77(H₂O)_1.23] [CdCl₄]·H₂O·5EtOH, [Cd(L)I₂], and [Cd(L)₂(EtOH)₂][Cd(L)(NO₃)₃]₂·6EtOH complexes are determined. According to the single crystal X-ray diffraction analysis, the organic ligand has a bidentate cyclic coordination. Distinctions in the structures of the compounds depending on the anion present are observed. The [Cd(L)I₂] complex is mononuclear with cadmium ions are in the tetrahedral environment. Cadmium chloride and nitrate complexes are cationic-anionic with cadmium ions in different environments, and their coordination numbers vary in the range of 4-7.

中文翻译：

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镉(II)与双(苯并咪唑-2-基)甲烷络合物的结构特征

摘要

合成了一系列与双（苯并咪唑-2-基）甲烷（L）的镉（II）配位化合物。得到单晶，分子和晶体结构为[Cd ₄ ( L ) ₄ Cl ₆ (EtOH) _0.77 (H ₂ O) _1.23 ] [CdCl ₄ ]·H ₂ O·5EtOH, [Cd( L )I ₂ ] , 和 [Cd( L ) ₂ (EtOH) ₂ ][Cd( L )(NO ₃ ) ₃ ] ₂·测定6EtOH复合物。根据单晶X射线衍射分析，有机配体具有双齿环配位。观察到化合物结构的差异取决于存在的阴离子。[Cd( L )I ₂ ] 配合物是单核的，镉离子处于四面体环境中。氯化镉与硝酸盐络合物在不同环境中与镉离子呈正负离子，其配位数在4-7之间变化。