Síntese, caracterização e estudo das propriedades magnéticas de um polímero de coordenação contendo cobalto(II) e cobre(II)

Química Nova

Tamyris T. Da Cunha¹  Humberto O. Stumpf¹  Cynthia L. M. Pereira¹  Heber S. Pires²  Luiz F. C. De Oliveira²  Emerson F. Pedroso²  Wallace C. Nunes² 

[1] ,Universidade Federal de Minas Gerais Instituto de Ciências Exatas Departamento de QuímicaBelo Horizonte MG ,Brasil

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

DOI  :  10.1590/S0100-40422012000900014

来源: SciELO

【 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 CoII CuII 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 CoII CuII 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】

CC BY-NC   
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