Li Ming-Xue, Bai Yan, Zhang Bing-Guang, Duan Chun-Ying, Xu Jian, Meng Qing-Jin
Coordination Chemistry Institute, The State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, P. R. China.
Inorg Chem. 2005 Jul 25;44(15):5459-66. doi: 10.1021/ic0502067.
Heteropolynuclear organometallic compounds have been constructed by using the ferrocene-based ligand H(2)L, NH(2)SCNHN=C(CH(3))(C(5)H(4))Fe. Reaction of the ligand H(2)L with the cobalt(II) salt gave a tetranuclear helicate Co(2)Fe(2) (1) with two ferrocene-based clips wrapped around the two cobalt atoms. The chiral helicates recognized the neighbors with same chirality through intermolecular hydrogen bonding between the thiosemicarbazone moieties to form a one-dimensional chiral channel. Reaction of the ligand H(2)L with the cadmium(II) salt afforded a tetranuclear dimeric compound Cd(2)Fe(2) (2), with two symmetric related parts bridged through two sulfur atoms. Reaction of the ligand H(2)L with the copper(I) salt, in the presence of triethylamine, resulted in a hexanuclear compound Cu(4)Fe(2) (3) with a crownlike Cu(4)S(4) octagon similar to that of S(8) sited inside and two ferrocene-containing ligands positioned outside. Electrochemical measurements were displayed to investigate the redox communications between the ferrocene moieties through metal centers.
通过使用基于二茂铁的配体H₂L，[NH₂SCNHN = C(CH₃)(C₅H₄)]₂Fe构建了异多核有机金属化合物。配体H₂L与钴(II)盐反应生成了四核螺旋体Co₂Fe₂(1)，两个基于二茂铁的夹子围绕着两个钴原子。手性螺旋体通过硫代半卡巴腙部分之间的分子间氢键识别具有相同手性的相邻分子，形成一维手性通道。配体H₂L与镉(II)盐反应得到四核二聚体化合物Cd₂Fe₂(2)，两个对称相关部分通过两个硫原子桥连。在三乙胺存在下，配体H₂L与铜(I)盐反应生成六核化合物Cu₄Fe₂(3)，其具有类似S₈的冠状Cu₄S₄八边形位于内部，两个含二茂铁的配体位于外部。展示了电化学测量以研究通过金属中心的二茂铁部分之间的氧化还原通讯。
