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以对苯二甲酸根 ( TPHA)为桥联配体 ,分别端接 4 ,4 -二甲基 -2 ,2 -联吡啶 ( Me2 bpy) ,2 ,9-二甲基 -1 ,1 0 -邻菲 啉 ( Me2 phen)和 5-氯 -1 ,1 0 -邻菲 啉 ( Cl-phen) ,合成了 3种新的双核铬 ( )配合物 [Cr2 -( TPHA) ( Me2 bpy) 4]( NO3) 4( 1 ) ,[Cr2 ( TPHA) ( Me2 phen) 4]( NO3) 4( 2 )和 [Cr2 ( TPHA) ( Clphen) 4]( NO3) 4( 3) .经元素分析、摩尔电导和磁性测定以及红外光谱和电子光谱等手段 ,推定这些配合物具有 TPHA桥联双核铬( )结构 ,其中 ,每个铬 ( )离子处于畸变八面体配位环境 .测定了配合物 ( 1 )的变温磁化率 ( 4～ 30 0 K) ,其数值用最小二乘法和从自旋 Hamiltonian算符 ( H=-2 JS1 S2 )导出的磁方程拟合 ,求得交换积分为-2 .98cm- 1 ,结果表明双核配合物中金属离子间存在弱的反铁磁自旋交换作用 .
In this paper, TPHA was used as a bridging ligand to terminate 4, 4 - dimethyl - 2, 2 - dipyridyl (Me2 bpy), 2, 9 - dimethyl - 1, Three novel dinuclear chrome complexes [Cr2 - (TPHA) (Me2 bpy) 4] have been synthesized by using phenanthroline (Me2 phen) and 5-chloro- (NO3) 4 (1), Cr2 (TPHA) (Me2phen) 4] (NO3) 4 (2) and [Cr2 (TPHA) (Clphen) 4] (NO3) 4 Conductivity and magnetic measurements, and infrared spectroscopy and electron spectroscopy, suggesting that these complexes have the TPHA bridged binuclear chromium (III) structure, in which each chromium (+) ion is in a distorted octahedral coordination environment. (4 ~ 30 0 K). The values are fitted by the least square method and the magnetic equations derived from the spin Hamiltonian operator (H = -2 JS 1 S 2) to obtain the exchange integral -2 .98cm-1, the results show that there is weak antiferromagnetic spin exchange between the metal ions in the binuclear complex.