摘要
合成了三种新的异三核配合物〔 Cu2 (oxae) 2 M〕(Cl O4) 2 ,oxae表示 N,N′—二 (2—氨乙基 )草酰胺根阴离子 ;M代表 Ca、Mg和 Ba.通过元素分析 IR、UV、ESR、电导及磁性测量等手段对配合物进行了表征 ;测定了配合物〔 Cu2 (oxae) 2 Mg〕(Cl O4) 2 的变温 (4— 30 0 K)磁化率 ,其数值用最小二乘法和由金属离子间磁交换作用的哈密顿算符 (κ =- 2 Jν1 .ν 2 )导出的磁方程拟合 ,求得交换积分 J=2 .56p-1 ,表明在该配合物中 Cu( )— Mg( )— Cu( )
Three novel heterotrinuclear complexes were synthesized,namely〔Cu 2(oxae) 2M〕(ClO 4) 2,where N,N′—Bis(2—aminoethyl) oxamido dianion, M denotes Mg,Ca and Ba.They have been characterized by IR,elemental analyses,electronic spectra,ESR,molar conductance and magnetic property measures.The variable temperature magnetic susceptibilities of complex〔Cu 2(oxae) 2Mg〕(ClO 4) 2 were measured (4—300K),the susceptibility data were least squares fit to the susceptibility equation derived from the spin Hamiltonian (=-2J 1· 2).The exchange integral J was found to be 2.56cm -1 ,indicating that very weakly ferromagnetic spin exchange interaction operates between Cu(Ⅱ) and Cu(Ⅱ) ions.
出处
《曲阜师范大学学报（自然科学版）》
CAS
1995年第4期72-76,共5页
Journal of Qufu Normal University(Natural Science)
