以4-硝基-邻苯二甲酸根为桥基配体的反铁磁双核锰(Ⅱ)配合物的合成与磁性  

Antiferromagnetic Coupling Dimanganese(Ⅱ) Complexes with 4-Nitro-Phthalato as Bridging Ligands:Synthesis and Magnetism

作　　者：马书林[1] 张龙泽[1] 唐明义[1] 孟宪昉[1] 

机构地区：[1]天津商学院制药工程系,天津300134

出　　处：《天津商学院学报》2001年第6期1-5,共5页Journal of Tianjin University of Commerce

摘　　要：合成了两种新型双核锰 ( )配合物 ,[Mn2 (4 - NO2 - phth) (L ) 4](Cl O4) 2 ,4- NO2 - phth代表 4-硝基 -邻苯二甲酸根二价阴离子 ,L是 1,10 -邻菲啉 (缩写为 phen)或 2 ,2 '-联吡啶 (bpy)。测量了配合物的变温磁化率 (77～ 30 0 K)。基于自旋哈密顿算符 ,H=- 2 JS1 · S2 (S1 =S2 =5 /2 ) ,对磁数据进行了优化拟合 ,给出的交换积分 J分别为 - 2 .92 cm- 1 (phen)和 - 2 .5 6 cm- 1 (bpy) ,结果表明 :配合物顺磁离子间存在着反铁磁自旋超交换作用。Two novel manganese(Ⅱ) binuclear complexes have been synthesized, namely [Mn_2(4-NO_2-phth)(L)_4](ClO_4)_2,where 4-NO_2-phth denotes the 4-nitro-phthalate dianion,L is 1,10-phenanthroline or 2,2-bipyridine.The magnetic susceptibility of the complexes were measured in the temperature (77～300 K) and the observed data were successfully simulated by an equation based on the spin Hamiltonian operator,=-2J_1·_2(S_1=S_2=5/2),The exchange integrals J were found equal to -2.92 cm -1 (phen),-2.56 cm -1 (bpy), respectively,indicating that an antiferromagnetic spin-superexchange interaction operates between the two paramagnetic ions of the complexes.

关 键 词：双核锰(Ⅱ)配合物 磁性 4-硝苯二甲酸根 桥基配体 合成 实验研究 反铁磁性 配位化学 

分 类 号：O614.711[理学—无机化学] O641.4[理学—化学]