Química Nova | |
Síntese, caracterização e estudo das propriedades magnéticas de um polímero de coordenação contendo cobalto(II) e cobre(II) | |
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
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
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