C—H…Cl Hydrogen Bond and π-π Interaction Based Two 3D Supramolecular Architectures of Cu(II) and Co(II) Complexes with Chiral 1,2-Bis(benzimidazol-2-yl) ethane Ligand Containing 2D Grids

合成了两个新的配合物CuLCl₂•2EtOH(1) 和CoLCl₂ (2) [L是( S , S )－1,2－二N－甲基苯并咪唑－1,2－二甲氧基－乙烷]，并通过单晶X衍射确定它们的结构。配合物1中，L作为三齿[N, N, O]配体，而配合物2 中，L作为二齿[N, N]配体。这两个配合物共同的结构特点都是通过分子内氢键形成2维的格子结构，然后通过分子间的C－H···Cl型氢键和π–π堆积作用形成3维结构。

C–H···Cl Hydrogen Bond and π‐ π Interaction Based Two 3D Supramolecular Architectures of Cu(II) and Co(II) Complexes with Chiral 1,2‐Bis(benzimidazol‐2‐yl) ethane Ligand Containing 2D Grids

Two new complexes, CuLCl₂·2EtOH ( 1 ) and CoLCl₂ ( 2 ) [L= (S,S)‐1,2‐bis(1‐methylbenzimidazol‐2‐yl)‐1,2‐bis‐(methoxy)ethane], have been synthesized in ethanol solution and structurally characterized by single crystal X‐ray diffraction analysis. The crystal structure data indicated that ligand L was coordinated to copper(II) ion as a tridentate ligand using [N, N, O] atoms, while it was coordinated to cobalt(II) ion as a bidentate ligand using [N, N] atoms. The most striking common feature of the structures of both complexes is the formation of 2D grid structures, which are formed by six and three types of intermolecular hydrogen bonds for complexes 1 and 2 . These 2D grids are extended by C? H···Cl hydrogen bonds and π‐π stacking interactions, leading to a 3D framework.