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Journal of Coordination Chemistry Volume 63, 2010 - Issue 10
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Original Articles

Syntheses, structures, and magnetic properties of dinuclear/1-D copper(II) acetato and formato derivatives with methylpyrazine and dimethylpyrazine

Montserrat Barquín Facultad de Ciencias Químicas, Grupo de Química Inorgánica, Universidad del País Vasco, UPV/EHU, Apartado 1072, 20080 San Sebastián, SpainCorrespondence[email protected]
,
María J. González Garmendia Facultad de Ciencias Químicas, Grupo de Química Inorgánica, Universidad del País Vasco, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
,
Liher Larrínaga Facultad de Ciencias Químicas, Grupo de Química Inorgánica, Universidad del País Vasco, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
,
Elena Pinilla Facultad de Ciencias Químicas, Laboratorio de Difracción de Rayos X, Universidad Complutense, 28040 Madrid, Spain; Facultad de Ciencias Químicas, Departamento de Química Inorgánica, Universidad Complutense, 28040 Madrid, Spain
,
José M. Seco Facultad de Ciencias Químicas, Grupo de Química Inorgánica, Universidad del País Vasco, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
&
María R. Torres Facultad de Ciencias Químicas, Laboratorio de Difracción de Rayos X, Universidad Complutense, 28040 Madrid, Spain
Pages 1652-1665 | Received 27 Nov 2009, Accepted 11 Mar 2010, Published online: 11 Jun 2010
 
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Abstract

In this study, {[Cu2(µ-HCO2)4](µ-Mepyrz)} n (1), [Cu2(µ-HCO2)4(Mepyrz)2] (2), {[Cu2(µ-AcO)4](µ-Mepyrz)} n (3), [Cu2(µ-AcO)4(Mepyrz)2] (4), [Cu2(µ-AcO)4(2,3-Me2pyrz)2] (5), [Cu2(µ-AcO)4(2,6-Me2pyrz)2] (6), and {[Cu2(µ-AcO)4](µ-2,5-Me2pyrz)} n (7) have been synthesized and characterized by chemical analysis and electronic spectroscopy. Compounds 2, 4, 5, and 6, characterized by single-crystal X-ray diffraction, are composed of molecular dimers based on a paddle-wheel motif with two coppers, four syn–syn carboxylates, and two ligands coordinated to copper in the axial positions. In 7, chains of [Cu2(µ-AcO)4] dimers with 2,5-Me2pyrz as bridging ligands are formed. Magnetic properties and electron paramagnetic resonance results of the compounds are also described.

Acknowledgments

This work was supported by the “Diputación Foral de Gipuzkoa” in a program co-financed by the European Union (FEDER).

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