间苯二甲酸根桥联的三核铜（Ⅱ）配合物的合成、光谱和磁交换作用

SYNTHESIS,SPECTRAL AND MAGNETIC EXCHANGE INTERACTION OF NOVEL TRINUCLEAR COPPER(Ⅱ)COMPLEX BRIDGED BYISOPHTHALATE DIANIONS

合成和表征了一种新的三核铜（Ⅲ）配合物：［Ｃｕ３（ＩＰＨＴＡ）３］，ＩＰＨＴＡ表示间苯二甲酸根阴离子．测定了配合物的变温磁化率（４—３００Ｋ），并用最小二乘法和从自旋哈密顿算符Ｈ＝－２Ｊ（Ｓ１·Ｓ２十Ｓ１·Ｓ３＋Ｓ２·Ｓ３）导出的磁方程拟合，求得交换积分Ｊ＝１６．８０ｃｍ－１，表明在一个三角构型的三核体系中，相邻铜离子间存在反铁磁的自旋交换作用．

A novel trinuclear copper(Ⅱ)complex [Cu3 (IPHTA )3] is synthesized and characterized, where IPHTA denotes the isophthalate dianions.Magnetic susceptibilities are recorded at variable-temperature for the complex and data are least - squares fitted to a susceptibility equation derived from spin Hamilton H =- 2J(S1. S2 + S1. S3 + S2. S3). The exchange integral J is found to be - 16. 80Cm-1,indicating that an antiferromagnetic spin - exchange interaction operates between the adjacent copper ions in a trinuclear-triangular skeleton.