Synthesis, crystal structure, thermal and magnetic properties of [Mn(H2O)6][Cu(pdta)]•2H2O (pdta=1,3-propylenediamine-N,N,N′N′-tetraacetate)

被引：26

作者：

Hernández-Padilla, M

Chinea, E

Domínguez, S

Mederos, A ^{[1
]}

Muñoz, MC

Lloret, F

机构：

[1] Univ La Laguna, Dept Quim Inorgan, Tenerife, Canary Islands, Spain

[2] Univ Politecn Valencia, Dept Fis Aplicada, E-46071 Valencia, Spain

[3] Univ Valencia, Fac Quim, Dept Quim Inorgan, E-46100 Burjassot, Valencia, Spain

来源：

POLYHEDRON | 2000年 / 19卷 / 10期

关键词：

1,3-propylenediaminetetraacetate; Cu(II) complexes; Mn(II) complexes; crystal structures; thermal properties; magnetic properties;

D O I：

10.1016/S0277-5387(00)00362-4

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

On mixing concentrated aqueous solutions of pdta, Cu(II) and Mn(II) in the ratio 1:1:1 at pH 4.5, single crystals of the complex [Mn(H2O)(6)] [Cu(pdta)] . 2H(2)O (1) (pdta = 1,3-propylenediamine-N,N,N'N'-tetraacetate) were obtained. X-ray structural analysis revealed that in the anion [Cu(pdta)](2-) the coordination polyhedron around the Cu(II) ion can be described as a tetragonaly distorted CuN2O4 octahedron, whereas the cation [Mn(H2O)(6)](2+) can be described as a very regular MnO6 octahedron. Thermogravimetric analysis shows that at 110 degrees C compound 1 loses its eight water molecules yielding the anhydrous compound [MnCu(pdta)] (2). Variable-temperature magnetic susceptibility measurements indicate that no magnetic interactions are present in 1 while weak antiferromagnetic interactions occur in 2. (C) 2000 Elsevier Science Ltd All rights reserved.

引用

页码：1175 / 1179

页数：5

共 38 条

[1]

[Anonymous], 1974, Critical Stability Constants

[2] ANISOTROPIC EXCHANGE AND DIMERIZATION IN THE ORDERED BIMETALLIC CHAINS CO2(EDTA).6H2O AND COCU(EDTA).6H2O - SINGLE-CRYSTAL EPR INVESTIGATION [J].