Synthesis, characterization and study of the magnetic properties of a coordination polymer containing cobalt(II) and copper(II)

Química Nova

Pedroso, Emerson F.¹  Pereira, Cynthia L. M.¹  Nunes, Wallace C.¹  Universidade Federal Fluminense, Niterói, Brasil¹  Cunha, Tamyris T. da¹  Oliveira, Luiz F. C. de¹  Universidade Federal de Minas Gerais, Belo Horizonte, Brasil¹  Stumpf, Humberto O.¹  Universidade Federal de Juiz de Fora, Juiz de Fora, Brasil¹  Centro Federal de Educação Tecnológica de Minas Gerais, Belo Horizonte, Brasil¹  Pires, Heber S.¹ 

关键词: molecule-based magnet;    one-dimensional system;    magnetic properties.;   

DOI  :  10.1590/S0100-40422012000900014

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

This work describes the synthesis and characterization of two new compounds with ligand opy (N-(2-pyridyl)oxamate): the copper(II) precursor [Me4N]2[Cu(opy)2].5H2O and CoIICuII coordination polymer {[CoCu(opy)2]}n×4nH2O. This latter compound was obtained by reaction of [Me4N]2[Cu(opy)2].5H2O and CoCl2.6H2O in water. The heterobimetallic CoIICuII chain was characterized by elemental analysis, IR spectroscopy, thermogravimetry and magnetic measurements. Magnetic characterization revealed typical behavior of one-dimensional (1D) ferrimagnetic chain as shown in the curves of temperature (T) dependence of magnetic susceptibility (χM), in the form of χMT versus T, and dependence of magnetization (M) with applied field (H).

【 授权许可】

Unknown