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

摘要

A robust heteromeric hydrogen-bonded synthon [R_2~2(9)-Id] is exploited to drive the modular self-assembly of four coordination complexes [M(H_2biim)_2(OH_2)_2]~(2+)(M = Co~(2+), Ni~(2+)) and carboxylate counterions. This strategy allowed us to build molecular architectures of 0-, 1-, and 2-dimensions. A hydrogen-bonded 2D-network with cavities has been designed, which maintains its striking integrity after reversible water desorption-resorption processes.