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Journal of Coordination Chemistry
Year: 2009  |  Volume: 62  |  Issue: 12  |  Page No.: 1964 - 1971

Enforced 2D supramolecular structures within hydrogen-bonded molecular cocrystals

Shengli Huang, Hongwei Hou, Liwei Mi and Yaoting Fan    

Abstract: Two new coordination polymers, {[Co(btmb)2(H2O)2] · (Fc(SO3)2)}n (1) and {[Cd(bbbm)(H2O)4] · (p-FcC6H4SO3)2(CH3OH)}n (2) (Fc = ferrocene; btmb = 1,4-bis(triazol-1-ylmethyl)benzene); bbbm = 1,1'-(1,4-butanediyl)bis-1H-benzimidazole), were synthesized as cocrystals and characterized by single crystal X-ray diffraction, elemental analysis and IR spectrum. In 1, two btmb molecules link Co(II) ions into one 1D double-stranded chain of loops, and these chains are bridged by Fc(SO3)22¯ ligands through H-bonds, resulting in an infinite 2D sandwich-type network. In 2, two adjacent Cd(II) ions are interconnected by bbbm to generate a 1D zigzag chain structure, and p– FcC6H4SO3¯ squeezes like a wedge into the adjacent chains, further being assembled by O-H ··· O hydrogen bonds and π-π stacking interactions to form a 2D supramolecular network.

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