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https://doi.org/10.1002/ejic.201000005
Title: | Three novel copper-radical complexes: Syntheses, crystal structures, and magnetic properties | Authors: | Chen, X.-D. Rong, R. Wang, Y. Zhu, L.-L. Zhao, Q.-H. Ang, S.G. Sun, B.-W. |
Keywords: | Copper Magnetic properties Radicals Structure elucidation |
Issue Date: | Aug-2010 | Citation: | Chen, X.-D., Rong, R., Wang, Y., Zhu, L.-L., Zhao, Q.-H., Ang, S.G., Sun, B.-W. (2010-08). Three novel copper-radical complexes: Syntheses, crystal structures, and magnetic properties. European Journal of Inorganic Chemistry (22) : 3506-3512. ScholarBank@NUS Repository. https://doi.org/10.1002/ejic.201000005 | Abstract: | Three novel copper-radical complexes [Cu(PhCOO)2-(NITpPy) 2(H2O)2] (1), [Cu2(Me 3CCOO)4(NITpPy)2] (2), and [{Cu 2(Me3CCOO)4(NITpPy)}n] (3) [NITpPy = 4,4,5,5-tetramethyl-2-(4-pyridyl)-2-imidazoline-1-oxyl 3-oxide] were synthesized and characterized structurally as well as magnetically. It is noteworthy that the syntheses of complexes 2 and 3 are similar except for the temperature of the reaction between Cu(Me3CCOO)2· 2H2O and the NITpPy radical ligand. Our magnetic study of complexes 1 and 2 reveals that the antiferromagnetic interactions occur with a J value around-10 cm-1 between copper(II) and radicals when radicals use the pyridine nitrogen atom connected to the copper(II) ion. Yet the best-fit parameters of complex 3 reveal that significant ferromagnetic interactions (J2 = 20.5 cm-1) take place in the copper radical when radicals coordinate the copper(II) ion with nitroxide directly. © 2010 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. | Source Title: | European Journal of Inorganic Chemistry | URI: | http://scholarbank.nus.edu.sg/handle/10635/95311 | ISSN: | 14341948 | DOI: | 10.1002/ejic.201000005 |
Appears in Collections: | Staff Publications |
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