异双核网状｛NBu_4〔CuCo（OX）_3〕｝_x的合成、光谱及磁性研究

SYNTHESIS,SPECTRA AND MAGNETISM OF {NBu_4 [CuCo (OX)_3]}_x

本文合成了标题配合物｛ＮＢ４〔ＣＵＣｏ（ＯＸ）３〕｝ｘ（ＮＢｕ４表示四丁基铵离子，ＯＸ表示草酸根离子）．用ＥＳＲ、ＩＲ等对配合物进行了表征，并测定了配合物的变温（７７～３００Ｋ）磁化率，其数值用最小二乘法和自旋哈密顿算符（Ｈ＝－２ＪＳ１·Ｓ２导出的磁方程拟合，求得交换参数Ｊ＝－５６．２ｃｍ（－１），表明配合物间存在着反铁磁相互作用．

The title complex {NBu4[CuCo (OX)3]}x (NBu4 is tetra (n-butyl)ammonium ion and OX is oxalate) was synthesized and characterized by ESR,IR.The variable temperature magnetic susceptibilities was measured (77￣300K) and the susceptibility data were leastsquares fit to the susceptibility equation derived from the spin Hamiltonian =-2J.The exchange interal,J was found to be equal to -56.2cm-1,indicating an antiferromagnetic spin exchange interaction among the metal ions CuⅡ-CoⅢ in the complex.