Synthesis and structures of two cobalt(II) coordination networks formed from aromatic polycarboxylates and 1,4-bis(imidazole-1-ylmethyl)benzene

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• 作者：Min Liu ; Xiuping Li ; Juan Li ; Wenhao Sun ; Zhipei Yang ; Fangbing Gong ; Jun Chen ; Jinshi Ma and Guoqiang Yang
• 刊名：Transition Metal Chemistry
• 出版年：2009
• 出版时间：March, 2009
• 年：2009
• 卷：34
• 期：2
• 页码：185-190
• 全文大小：221.7 KB

文摘

Two Co(II) coordination polymers, [Co(Hbtc)(bix)] _n , (1) and [Co(1,4-bdc)(bix)H₂O] _n (2) (bix = 1,4-bis(imidazole-1-ylmethyl)benzene; H₃btc = benzene-1,3,5-tricarboxylic acid; 1,4-H₂bdc = benzene-1,4-dicarboxylic acid) have been synthesized under hydrothermal conditions and structurally characterized. X-ray structure analysis reveals that in polymer 1, 2D infinite grid-like frameworks are interconnected by hydrogen-bond interactions to result in a 3D supramolecular architecture, in which the three carboxylate groups of the H₃btc molecule adopt three different coordination modes. In polymer 2, 1,4-bdc ligands with cobalt atoms construct 1D zigzag chains which are bridged by bix ligands to form a 3D framework.