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Int. J. Mol. Sci. 2013, 14(12), 23597-23613; doi:10.3390/ijms141223597

New Mononuclear Cu(II) Complexes and 1D Chains with 4-Amino-4H-1,2,4-triazole

Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, Molecules, Solids and Reactivity (IMCN/MOST), Place L. Pasteur, 1, Louvain-la-Neuve 1348, Belgium
Institute for Advanced Materials, Physicochemical Processes, Nanotechnology & Microsystems, NCSR Demokritos, Athens 15310, Greece
Author to whom correspondence should be addressed.
Received: 17 September 2013 / Revised: 29 October 2013 / Accepted: 30 October 2013 / Published: 3 December 2013
(This article belongs to the Special Issue Synthesis, Characterization and Application of Supramolecular Systems)
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The crystal structures of two mononuclear Cu(II) NH2trz complexes [Cu(NH2trz)4(H2O)](AsF6)2 (I) and [Cu(NH2trz)4(H2O)](PF6)2 (II) as well as two coordination polymers [Cu(μ2-NH2trz)2Cl]Cl∙H2O (III) and [Cu(μ2-NH2trz)2Cl] (SiF6)0.5∙1.5H2O (IV) are presented. Cationic 1D chains with bridging bis-monodentate μ2-coordinated NH2trz and bridging μ2-coordinated chloride ligands are present in III and IV. In these coordination polymers, the Cu(II) ions are strongly antiferromagnetically coupled with J = −128.4 cm−1 for III and J = −143 cm−1 for IV (H = −JΣSiSi+1), due to the nature of the bridges between spin centers. Inter-chain interactions present in the crystal structures were taken into consideration, as well as g factors, which were determined experimentally, for the quantitative modeling of their magnetic properties. View Full-Text
Keywords: coordination polymers; copper; 1,2,4-triazole; magnetic properties; crystal engineering coordination polymers; copper; 1,2,4-triazole; magnetic properties; crystal engineering

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Dîrtu, M.M.; Boland, Y.; Gillard, D.; Tinant, B.; Robeyns, K.; Safin, D.A.; Devlin, E.; Sanakis, Y.; Garcia, Y. New Mononuclear Cu(II) Complexes and 1D Chains with 4-Amino-4H-1,2,4-triazole. Int. J. Mol. Sci. 2013, 14, 23597-23613.

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