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

页码：11210 / 11217

页数：8

共 56 条

[1] A [Mn18Dy] SMM resulting from the targeted replacement of the central MnII in the S=83/2 [Mn19]-aggregate with DyIII [J].