在水热条件下,Cu(Ⅱ)-H2 biim配合物与Dawson型钨磷酸盐构筑了1个无机-有机杂化化合物[Cu(H2biim)2 (H2O)][{Cu(H2biim)2}2(P2W18O62)]·11H2O(1)(H2biim =2,2'-联咪唑).通过单晶X射线衍射、红外光谱(IR)、X射线粉末衍射(XRD)、元素分析、电化学分析等技术手段对其进行了表征.结构分析表明,在化合物1分子中,[P2W18O62]6-单元作为双齿配体与2个Cu2离子配位形成双支撑的杂多阴离子[{ Cu(H2biim)2}2(P2W18O62)]2-,在其外部有1个游离的[Cu(H2biim)2(H2O)]2+和11个H2O分子.H2biim分子与杂多阴离子/H2O分子间存在N—H…O/OW氢键,通过氢键、静电和π-πr堆积作用,进一步构成具有3D结构的晶体材料.该晶体化合物对H2 O2和NaNO2的还原具有良好的电催化作用;同时,作为酸催化剂用于合成环己酮乙二醇缩酮反应,催化活性高,可重复使用.
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