SYNTHESES, SPECTRA, AND MAGNETIC PROPERTIES OF Fe(II) COMPLEXES WITH 7,7′,8,8′- TETRACYANOQUINODIMETHANE
作者:Wen-Zhen Wang、Hong-Mei Wang、Dai-Zheng Liao、Zong-Hui Jiang、Shi-Ping Yan、Geng-Lin Wang
DOI:10.1081/sim-100104790
日期:2001.4.30
Iron(II) complexes with TCNQ as ligand, Fe(bpy)(2)(ClO4) (TCNQ) . H2O (1), Fe(Mebpy)(2)(ClO4)(TCNQ) . 2H(2)O . C-2 H5OH (2), and Fe(btimb)(2)(ClO4)(TCNQ) . 3H(2)O (3) (where bpy = 2,2'-bipyridine, Mebpy = 4,4'-dimethyl-2,2'-bipyridine. btimb = o-bis[1-(1,2,4-triazolyl)iminomethyl]benzene, and TCNQ = 7,7',8,8'-tetracyano-quinodimethane) were prepared, and their spectroscopic and magnetic properties were studied. The metal ion is coordinated by two molecules of bidentate ligand L (L = bpy, Mebpy or btimb), one mono-dentately coordinated TCNQ(-) anion and one water molecule. The temperature dependence of the magnetic susceptibility of (1) shows antiferromagnetic interaction between high-spin Fe(II) and the TCNQ(-) radical with J = -100.4cm(-1) (where H = -2JS(1) . S-2).