Ferromagnetic exchange coupling in a two-dimensional copper(II) compound: Cu(pyridine-2-carboxylate)Cl

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• 作者：Zurowska ; Bogumila ; Mrozinski ; Jerzy
• 关键词：Copper(II)complexes ; Pyridinecarboxylate ; Magnetism ; Layer structures
• 刊名：Inorganica Chimica Acta
• 出版年：2003
• 出版时间：January 10, 2003
• 年：2003
• 卷：342
• 期：Complete
• 页码：23-28
• 全文大小：165 K

文摘

Magnetic properties of the compound chloro(pyridine-2-carboxylate)copper(II) were studied. The crystal structure revealed a unique two-dimensional (2D) polymer. The framework of the structure is a 16-membered (–O–C–O–Cu)₄ ring involving carboxylate group in a syn–anti conformation. Each copper ion of an individual tetrameric ring is connected to others through a dichlorobridge. The copper ions within a given layer are ferromagnetically coupled. The variable-temperature (1.9–300 K) magnetic susceptibility data of the complex were interpreted with the dimer law with molecular field approximation, yielding J, zJ′ and g values of 15.0, 1.5 and 2.07 cm⁻¹, respectively. The magnitude of the magnetic interaction is discussed on the basis of known structural data.