Robust hydrogen-bonded self-assemblies form biimidazole complexes.Synthesis and structural characterization of [M(biimidazole)_2(OH_2)_2]~(2+)(M=Co~(2+),Ni~(2+))complexes and crboxylate modules

摘要

A robust heteromeric hydrogen-bonded synthon[R~2_2(9)-Id] is exploited to drive the modular self-assembly of four corrdination complexes [M(H_2biim)_2(OH_2)_2](2+) (M-Co~(2+),Ni~(2+)) and crboxylate counterions.This strategy allowed us to build molecular architectures of 0-,1-,and 2-dimensions.A hydrogne-bonded 2D-network with cavities has been designed,which maintains its striking itnegrity afte rreversible water desorption-resporption processes.