Preparation,Crystal Structure and Properties of a Pentametallic 3-Ferrocenyl-2-crotonic acid-Bridged Copper(II) Complex  

作　　者：杨家祥 张泽 吴杰颖 田玉鹏 刘清亮 FUN Hoong Kun USMAN Anwar 许志强 LAURENCE K.Thompson 

机构地区：[1]Department of Chemistry,Anhui University [2]Department of Chemistry,University of Science and Technology of China [3]Department of Chemistry,Memorial University of Newfoundland [4]X-Ray Crystallography Unit,School of Physics,Universiti Sains Malaysia

出　　处：《Chinese Journal of Chemistry》2003年第11期1461-1465,共5页中国化学（英文版）

基　　金：ProjectsupportedbytheMajorStateBasicResearchDevelopmentProgram (No .G19980 614 0 2 ) ,theNationalNaturalScienceFoundationofChina (Nos .2 0 0 710 0 1,5 0 2 72 0 0 1) ,theNaturalScienceFoundationofAnhuiProvince (No .0 3 0 44 70 1)andtheMalaysianGovernmenta

摘　　要：The synthesis and characterization of the copper(II) complex [Cu_2(OOCCH=C(CH_3)Fc)_3(phen)_2]ClO_4·2H_2O (1) are reported. The structure of the complex was determined by single-crystal X-ray analysis. The compound crystallizes in the monoclinic system,space group Pc ,with Z =2,a =1.2799(4) nm,b =0.9969(4) nm,c =2.5228 nm,and β =91.576(1)°. The cationic part of 1 indicates a penametallic core in which three 3-ferrocenyl-2-crotonic acid salt (FCA) groups act as (O,O') bridging ligands between two copper(II) ions with a square-pyramidal environment. Cyclic voltammetric experiments in acetonitrile have been performed mainly to examine the Fe(II) → Fe(III) one-electron oxidation in FCA and its complex. The variable-temperature magnetic susceptibility measurements revealed very weak intramolecular anti-ferromagnetic coupling. Fitting parameters are 2 J =-0.2 cm -1 ,g =2.114,and θ =0 K.The synthesis and characterization of the copper(II) complex [Cu_2(OOCCH=C(CH_3)Fc)_3(phen)_2]ClO_4·2H_2O (1) are reported. The structure of the complex was determined by single-crystal X-ray analysis. The compound crystallizes in the monoclinic system,space group Pc ,with Z =2,a =1.2799(4) nm,b =0.9969(4) nm,c =2.5228 nm,and β =91.576(1)°. The cationic part of 1 indicates a penametallic core in which three 3-ferrocenyl-2-crotonic acid salt (FCA) groups act as (O,O') bridging ligands between two copper(II) ions with a square-pyramidal environment. Cyclic voltammetric experiments in acetonitrile have been performed mainly to examine the Fe(II) → Fe(III) one-electron oxidation in FCA and its complex. The variable-temperature magnetic susceptibility measurements revealed very weak intramolecular anti-ferromagnetic coupling. Fitting parameters are 2 J =-0.2 cm -1 ,g =2.114,and θ =0 K.

关 键 词：crystal structure Cu(II) complex magnetic susceptibility 

分 类 号：O627[理学—有机化学]