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  

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

作　　者：李纲[1] 侯红卫[1] 李林科[1] 王宇飞[1] 孟祥茹[1] 朱玉[1] 樊耀亭[1] 

机构地区：[1]郑州大学化学系,郑州450052

出　　处：《化学学报》2004年第11期1060-1064,M005,共6页Acta Chimica Sinica

基　　金：河南省高等学校创新人才工程;河南省杰出青年基金资助项目

摘　　要：La(NO3 ) 2 ·6H2 O和二茂铁单甲酸钠在甲醇中反应得到了镧的双核配合物 :[La2 ( μ2 η2 OOCFc) 2 (OOCFc) 4 (H2 O) 4 ]·2HOOCFc .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 [La2 ( μ2 η2 OOCFc) 2 (OOCFc) 4 (H2 O) 4 ]基团形成了 1个无限的一维长链 .A novel dimer [La 2( μ 2 η 2 OOCFc) 2(OOCFc) 4(H 2O) 4]·2HOOCFc was obtained by the reaction of La(NO 3) 2 ·6H 2O 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, [La 2(μ 2 OOCFc) 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, [La 2(μ 2 η 2 OOCFc) 2(OOCFc) 4(H 2O) 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.

关 键 词：二茂铁单甲酸根桥联 镧 二聚体 合成 晶体结构 电化学性质 双核配合物 

分 类 号：O634[理学—高分子化学]