化学学报 ›› 2004, Vol. 62 ›› Issue (11): 1060-1064. 上一篇    下一篇

研究论文

二茂铁单甲酸根桥联的镧二聚体的合成、晶体结构及电化学性质

李纲, 侯红卫, 李林科, 王宇飞, 孟祥茹, 朱玉, 樊耀亭   

  1. 郑州大学化学系, 郑州, 450052
  • 投稿日期:2003-10-31 修回日期:2004-02-02 发布日期:2014-02-17
  • 通讯作者: 侯红卫,E-mail:houhongv@zzu.edu.cn E-mail:houhongv@zzu.edu.cn
  • 基金资助:
    河南省高等学校创新人才工程和河南省杰出青年基金资助项目

Synthesis, Crystal Structure and Electrochemical Properties of a Ferrocenecarboxylato-Bridged Lanthanum(Ⅲ) Dimer

LI Gang, HOU Hong-Wei, LI Lin-Ke, WANG Yu-Fei, MENG Xiang-Ru, ZHU Yu, FAN Yao-Ting   

  1. Department of Chemistry, Zhengzhou University, Zhengzhou 450052
  • Received:2003-10-31 Revised:2004-02-02 Published:2014-02-17

La(NO3)2·6H2O和二茂铁单甲酸钠在甲醇中反应得到了镧的双核配合物:[La222-OOCFc)2(OOCFc)4(H2O)4]·2HOOCFe.单晶结构测试表明:该化合物中2个二茂铁单甲酸根分别三齿桥联2个镧离子形成了1个双核中心.每个镧离子与9个氧原子配位,其中7个氧原子来自3个二茂铁单甲酸根,另2个氧原子来自2个配位水,因此镧离子处于不规则的多面体中.有意思的是,在其固态结构中,结晶的二茂铁单甲酸分子通过O…H-O氢键连接相邻的[La222-OOCFc)2-(OOCFe)4(H2O)4]基团形成了 1个无限的一维长链.对标题化合物以及对应配体在DMF溶液中的电化学性能进行了研究.

关键词: 二聚体, 镧, 二茂铁单甲酸钠, 晶体结构, 电化学

A novel dimer [La22 η2OOCFc)2(OOCFc)4(H2O)4]·2HOOCFc was obtained by the reaction of La(NO3)2 ·6H2O with sodium ferrocenecarboxylate in methanol solution. X-ray structural analysis reveals that in the compound two La(Ⅲ) ions are bridged by two ferrocenecarboxylate anions as asymmetrically bridging ligands, leading to dimeric cores, [La22OOCFc)2]. Each Ln(Ⅲ) ion has an irregular polyhedral coordination environment with nine coordinated oxygen atoms derived from the ferrocenecarboxylate ligands and coordinated water molecules. In its solid-state structure, [La22η2OOCFc)2(OOCFc) 4(H2O)4] groups are joined together by O...H-O hydrogen bonds forming a one-dimensional infinite chain. The solution state differential pulse voltammetries of title compound and the corresponding ligand are investigated in the DMF solution.

Key words: dimer, lanthanum(Ⅲ), sodium ferrocenecarboxylate, crystal structure, electrochemical property