氰根和酚氧桥联M(Ⅱ)-Mn(Ⅲ)(M=Ru和Os)二维配合物的合成、结构与磁性
Syntheses, Crystal Structures and Magnetic Properties of Cyanide- and Phenolate-Bridged Two-Dimensional M(Ⅱ)-Mn(Ⅲ) (M=Ru and Os) Complexes
作者单位E-mail
张丽芳 中国矿业大学化工学院, 徐州 221116  
徐露 中国矿业大学化工学院, 徐州 221116  
季玉洁 中国矿业大学化工学院, 徐州 221116  
倪中海 中国矿业大学化工学院, 徐州 221116 nizhonghai@cumt.edu.cn 
摘要: 基于六氰根构筑单元[M(Ⅱ)(CN)6]4-与[Mn(Ⅲ)(salen)]+模块反应合成了2个新型酚氧和氰根混合桥联的M(Ⅱ)-Mn(Ⅲ)配合物{[Mn(Ⅲ)(salen)]4[Mn(Ⅲ)(salen)(H2O)]2[M(Ⅱ)(CN)6]}(ClO42·2H2O(M=Ru (1),Os (2),salen2-=双水杨酰胺乙基负离子)。单晶衍射结果表明:它们是结构类似的二维化合物,其中氰根桥联的七核[Mn(Ⅲ)6M(Ⅱ)]2+单元进一步通过双酚氧桥相互连接构成二维层状结构。磁性研究表明:2个化合物通过酚氧桥均呈现反常的反铁磁耦合,基于自旋哈密顿算符Ĥ=-2JMnMnŜMn1ŜMn2拟合得到它们的磁耦合常数分别是J=-0.340 cm-11)和-0.561 cm-12)。
关键词: 双金属配合物  氰根桥联  酚氧桥连  反铁磁耦合
基金项目: 中央高校基本科研业务费专项资金(No.2015XKMS047)和江苏省高校优势学科建设工程项目资助
Abstract: Two new M(Ⅱ)-Mn(Ⅲ) complexes {[Mn(Ⅲ)(salen)]4[Mn(Ⅲ)(salen)(H2O)]2[M(Ⅱ)(CN)6]}(ClO4)2·2H2O (M=Ru (1) and Os (2)) (salen2-=N,N'-ethylenebis(salicylideneaminato)dianion) have been synthesized based on [Mn(Ⅲ)(salen)]+ segment and hexacyanide-containing building blocks [M(Ⅱ)(CN)6]4-. Single crystal X-ray diffraction analyses show that both complexes are isostructurally two-dimensional (2D) structures in which cyanide-bridged heptanuclear [Mn(Ⅲ)6M(Ⅱ)]2+ units are linked together by double phenolate bridges. Magnetic studies show that they are abnormal antiferromagnetic through the double phenolate bridges with the magnetic coupling constant J=-0.340 cm-1 for 1 and -0.561 cm-1 for 2 based on the spin exchange Hamiltonian Ĥ=-2JMnMnŜMn1ŜMn2.
Keywords: dimetallic complex  cyanide-bridged  phenolate-bridged  antiferromagnetic coupling
投稿时间:2016-12-06 修订日期:2017-04-18
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张丽芳,徐露,季玉洁,倪中海.氰根和酚氧桥联M(Ⅱ)-Mn(Ⅲ)(M=Ru和Os)二维配合物的合成、结构与磁性[J].无机化学学报,2017,33(6):1051-1058.
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