Synthesis, structure and magnetic properties of two new azido-CoII coordination architectures: From ferromagnetic coupling to single-chain-magnets

被引：28
|
作者：
Hu, Bo-Wen [2 ,3 ]
Zhao, Jiong-Peng [2 ,3 ]
Yang, Qian [2 ,3 ]
Zhang, Xiao-Feng [2 ,3 ]
Evangelisti, M. [4 ]
Sanudo, E. C. [1 ]
Bu, Xian-He [2 ,3 ]
机构：
[1] Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, Dept Fis Mat Condensada, E-50009 Zaragoza, Spain
[2] Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China
[3] Nankai Univ, Tianjin Key Lab Met & Mol Based Mat Chem, Tianjin 300071, Peoples R China
[4] Univ Barcelona, Dept Quim Inorgan, Inst Nanociencia Nanotecnol, Barcelona 647, Spain
来源：
DALTON TRANSACTIONS | 2010年 / 39卷 / 46期
关键词：
MOLECULE MAGNET; NONLINEAR EXCITATIONS; STATISTICAL-MECHANICS; CRYSTAL-STRUCTURE; SITE ANISOTROPY; COMPLEXES; RELAXATION; CLUSTERS; BEHAVIOR; MN;
D O I：
10.1039/c0dt00566e
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Two new azido-Co-II complexes with pyrazine carboxylato ligands, [Co(N-3)(L)center dot H2O](n) (L = pyrazine-2-carboxylato) (1) and [CoNa(N-3)(2)(L)](n) (2), have been obtained by carefully tuning the Co-II : N-3(-) ratio. Here we present the structural and magnetic characterization of these new species. Modulation of the coordination environment of Co-II leads to a variation of the magnetic properties of the obtained compounds. Complex 1 exhibits ferromagnetically coupled [Co-2] units that form the rungs of the ladder with a nearly negligible coupling between these units, while complex 2 is a 2D arrangement of 1D Co-II single-chain magnets.
引用
收藏
页码：11210 / 11217
页数：8
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