Coordination polymers of cobalt(II) with pyrimidine and pyrazine: Syntheses, structures and magnetic properties
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- 作者：Mikhail A. Kiskin ; Grygory G. Aleks ; rov ; Artem S. Bogomyakov ; Vladimir M. Novotortsev ; Igor L. Eremenko
- 关键词：Polymeric cobalt(II) complex ; Carboxylate ligands ; X-ray diffraction analysis ; Magnetic properties
- 刊名：Inorganic Chemistry Communications
- 出版年：2008
- 出版时间：September 2008
- 年：2008
- 卷：11
- 期：9
- 页码：1015-1018
- 全文大小：333 K
文摘
New 2D-polymeric compound [Co2(μ-OH2)(μ-Piv)2(Piv)2(μ-L1)2]n (2) was synthesized in the reaction of the cobalt(II) pivalate [Co(Piv)2]n (1, Piv is an anion of pivalic acid) and pyrimidine (L1) in MeCN. 3D-polymer [Co5(μ-OH2)(μ3-OH)(μ3-Piv)(μ-Piv)5(Piv)3(μ-L2)4]n (3) was prepared by the reaction of the polymer [Co(Piv)2]n (1) with pyrazine (L2). Complexes 2 and 3 were characterized by the X-ray diffraction and magnetic susceptibility. It was shown that compound 2 undergoes antiferromagnetic ordering with weak ferromagnetism at TN = 4.5 K with σ0(2 K) = 4000 G cm3/mol.