Copper complexes with a pyrazole derivative ligand. Crystal structure of tetrakis{[(3,5-bis(pyridin-2-yl)pyrazolate)-(aqua)copper(II)] nitrate monohydrate}

J. Pons, X. López, J. Casabó, F. Teixidor, A. Caubet, J. Rius, C. Miravitlles

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Abstract

Reaction of the pyrazole-derived ligand 3,5-bis(pyridin-2-yl)pyrazole (bpypz) with Cu(NO3)2, CuCl2 and CuBr2 yields polynuclear copper(II) compounds with remarkable structural and magnetic properties. The magnetic behaviour was studied by fitting the experimental data with a dimer and tetramer magnetic model. Strong antiferromagnetic exchange interactions were found in all cases. The molecular structure of the nitrate compound was solved by X-ray diffraction methods. The compound is tetranuclear, orthorhombic, space group Fddd, a = 18.572(4), b = 23.816(8), c = 27.337(9) Å, V= 12092 Å3, Z = 8. © 1992.
Original languageEnglish
Pages (from-to)61-66
JournalInorg. Chim. Acta
Volume195
Issue number1
DOIs
Publication statusPublished - 1 May 1992

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