Synthesis, Crystal Structure and Magnetic Properties of a New cis-Heterotrinuclear [CuL-Mn-CuL] Complex

被引：1
作者：
Li Fuan [1 ,2 ]
Liu Hongling [1 ]
Li Guopeng [1 ]
Tao Ruojie [1 ]
机构：
[1] Henan Univ, Coll Chem & Chem Engn, Inst Mol & Crystal Engn, Kaifeng 475001, Henan, Peoples R China
[2] Pingdingshan Univ, Coll Chem & Chem Engn, Pingdingshan 467000, Henan, Peoples R China
来源：
CHINESE JOURNAL OF CHEMISTRY | 2009年 / 27卷 / 08期
关键词：
copper; cis-configuration; crystal structure; ferromagnetic interaction; DISSYMMETRICAL MONONUCLEAR ENTITIES; COORDINATION POLYMER; TETRANUCLEAR COMPLEXES; COPPER(II) IONS; HEXAFLUOROACETYLACETONE; ANISOTROPY; MOSSBAUER; IRON(III); CLUSTER; HHFAC;
D O I：
10.1002/cjoc.200990248
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A new dissymmetrical Schiff base copper precursor complex KCuL and a cis-heterotrinuclear complex with the chemical formula [(CuL)(2)Mn(H2O)(2)]center dot CH3OH, have been synthesized and characterized by means of elemental analysis and IR, where H3L=(E)-N-[2-(5-chloro-2-hydroxybenzylideneamino)ethyl]-2-hydroxybenzamide. The crystal structure of the cis-heterotrinuclear complex was determined by X-ray analysis. Each cell unit of the complex contains one neutral cis-heterotrinuclear molecule and two disordered methanol molecules. The central Mn2+ ion is located at the site of O-6 with a distorted octahedral geometry, and two coordination anions [CuL](-) are aligned in cis-configuration. The magnetic properties indicate that the trinuclear complex not only has antiferromagnetic interactions in the internal trinuclear molecule but also has weak ferromagnetic interactions between the trinuclear units. The best-fit parameters are J= -12.1 cm(-1), g=2.20 and zj'=1.37 cm(-1).
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收藏
页码：1476 / 1480
页数：5
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