氰基桥联的Fe(Ⅲ)-Mn(Ⅱ)双金属链的可控组装和磁性作用的调控 |
Tuning Assembly and Magnetic Interactions of Cyano-bridged Fe(Ⅲ)-Mn(Ⅱ) Bimetallic Chains |
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摘要: 基于不同位阻的三氰基构筑单元和双齿配体,合成了2个氰基桥联的Fe(Ⅲ)-Mn(Ⅱ)链状化合物。利用不同的结构扭曲类型调控了它们的磁性相互作用。化合物{[Fe(Ⅲ)(PzTp)(CN)3][Mn(Ⅱ)(5,5’-dmbpy)2]ClO4}n(1;PzTp=tetrakis(pyrazolyl)borate;5,5’-dmbpy=5,5’-dimethyl-2,2’-bipyridine)显示为左右手螺旋链的一维2,2-CC链状结构并且表现出亚铁磁行为。化合物{[Fe(Ⅲ)(Tp*)(CN)3]2[Mn(Ⅱ)(dpqc)]·CH3OH·H2O}n(2;Tp*=hydridotris(3,5-dimethylpyrazolyl)borate;dpqc=dipyrido[3,2-a:2’,3’-c]-(6,7,8,9-tetrahydro)phenazine)具有一维4,2-带状的双链结构并且表现出典型的反铁磁性相互作用。 |
关键词: 氰基桥联 链 亚铁磁 反铁磁 |
基金项目: 国家自然科学基金(No.21322103)资助项目。 |
Abstract: Two cyano-bridged Fe(Ⅲ)-Mn(Ⅱ) chains were synthesized via using bidentate ligands and cyanometallate building blocks with different steric hindrance. The magnetic interactions were adjusted by the structural distortions of the two compounds. Compound {[Fe(Ⅲ)(PzTp)(CN)3] [Mn(Ⅱ)(5,5'-dmbpy)2]ClO4}n (1; PzTp=tetrakis(pyrazolyl)borate; 5,5'-dmbpy=5,5'-dimethyl-2, 2'-bipyridine) shows a 1D 2, 2-CC chain-like structure with a left- and right-handed helices chains and exhibits the ferrimagnetic behavior. Compound {[Fe(Ⅲ)(Tp*)(CN)3]2[Mn(Ⅱ)(dpqc)]·CH3OH·H2O}n (2; Tp*=hydridotris(3, 5-dimethylpyrazolyl)borate; dpqc=dipyrido[3, 2-a:2', 3'-c]-(6, 7, 8, 9-tetrahydro)phenazine) has a novel 1D 4, 2-ribbon double chain-like structure with dominant antiferromagnetic interactions. CCDC:1449127, 1; 1449128, 2. |
Keywords: cyano-bridged chain ferrimagnetic antiferromagnetic |
投稿时间:2016-05-25 修订日期:2016-08-04 |
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矫成奇,姜文静,文雯,任奕,王佳良,刘涛,何成.氰基桥联的Fe(Ⅲ)-Mn(Ⅱ)双金属链的可控组装和磁性作用的调控[J].无机化学学报,2016,32(9):1637-1646. |
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