Linear trinuclear and one-dimensional copper(II) complexes containing co-bridging end-on azido and triazole ligands.: Crystal structures and magnetic properties of [Cu3(atrz)2(N3)6] and [Cu(atrz)2(N3)]NO3 (atrz=4-amino-1,2,4-triazole)

被引：101

作者：

Liu, JC

Fu, DG

Zhuang, JZ

Duan, CY

You, XZ ^{[1
]}

机构：

[1] Nanjing Univ, Inst Coordinat Chem, State Key Lab Coordinat Chem, Nanjing 210093, Peoples R China

[2] Southeast Univ, Natl Lab Mol & Biomol Elect, Nanjing 210096, Peoples R China

来源：

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1999年 / 14期

关键词：

D O I：

10.1039/a900619b

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

New complexes with 1,2,4-triazole and end-on azido bridging ligands, [Cu-3(atrz)(2)(N-3)(6)] 1 and [Cu(atrz)(2)(N-3)]NO3 2 (atrz = 4-amino-1,2,4-triazole), have been prepared and structurally determined. Complex 1 has a linear trinuclear copper(II) structure with bridging bond angles Cu-N-N (atrz) [119.3(3) and 123.4(3)degrees], and larger Cu-N-Cu [118.7(2)degrees]. In 2 the copper(II) ions are linked by one end-on azido and two triazole bridges forming a cationic chain with Cu-N-N (equatorial atrz) [121.0(2) and 122.3(2)degrees] and Cu-N-Cu 104.05(12)degrees. The nearest-neighbour Cu ... Cu distances are 3.4496(7) Angstrom for 1 and 3.5034(6) Angstrom for 2. The copper(II) ions are strongly antiferromagnetically coupled with J = -108.8 cm(-1) for 1, and weakly with J = -17.7 cm(-1) for 2. The nature and the magnitude of the antiferromagnetic exchange of both complexes are discussed based on their structures.

引用

页码：2337 / 2342

页数：6

共 43 条

[11] Synthesis, crystal structure, EXAFS, and magnetic properties of catena-poly[μ-tris(4-(2-hydroxyethyl)-1,2,4-triazole-N1,N2)copper(II)] diperchlorate trihydrate:: Relevance with the structure of the iron(II) 1,2,4-triazole spin transition molecular materials [J].