Synthesis, Structure and Magnetic Property of a Cobalt(II) Metal‐Organic Framework

The three-dimensional (3D) porous cobalt(II) metal-organic framework (MOF), [Co3(L)2(DMA)2(MeOH)2·4(DMA)·6(MeOH)]n (1) [L = fully deprotonated 2,7-bis(4-benzoic acid)-N-(4-benzoic acid) carbazole, DMA = N,N-dimethylacetamide], was synthesized by hydrothermal reaction. Based on X-ray single-crystal diffraction, structural analysis indicates that complex 1 crystallizes in the monoclinic C2/c space group. Complex 1 possesses a 3,6-connected three-dimensional (3D) topological structure with a point symbol of {42·6}2{44·62·87·102} when a trinuclear CoII cluster was regarded as 6-connected node and the organic ligands could be regarded as 3-connected linkers between the 6-connected nodes. The framework structure exhibits a one-dimension (1D) channel with an accessible void of 4223.0 A3, amounting to 42.8 % of the total unit-cell volume (9862.0 A3). Moreover, the magnetic properties of complex 1 were studied.