학술논문
Structure and magentic properties of novel chelate complexes of copper(II) and nickel(II) with nitroxide radical ethyl-2-(1-oxyl-2,2,5,5-tetramethylimidazolidin-4-yliden)-3-oxopropanoate.
Document Type
Article
Author
Source
Subject
*CHELATES
*MAGNETIC properties
*COMPLEX compounds
*NITROXIDES
*ORGANIC synthesis
*MOLECULAR structure
*ANTIFERROMAGNETISM
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Language
ISSN
0022-4766
Abstract
Chelate complexes of copper(II) and nickel(II) with anions of nitroxide radical ethyl-2-(1-oxyl-2,2,5,5-tetramethylimidazolidin-4-yliden)-3-oxopropanoate (HL) are synthesized. The compounds have molecular structure and zero magnetic dimensionality. CuL crystallizes as two polymorphs having mononuclear structure. NiL forms dimeric molecules by virtue of the bridging function of the aldehyde oxygen atoms. Magnetic properties of NiL are determined by antiferromagnetic exchange interactions between the Ni(II) ions (-48(1) K) propagated through the oxygen bridges [ABSTRACT FROM AUTHOR]