Acta Crystallographica Section C

Volume 65, Part 11 (November 2009)

metal-organic compounds

 

Copper(II) succinate complexes with 1,2-di-4-pyridylethane and 1,3-di-4-pyridylpropane

M. J. González Garmendia, V. S. Nacianceno, J. M. Seco and F. J. Zúñiga

Abstract: The compounds poly[di-₄-succinato-₂-1,2-di-4-pyridylethane-dicopper(II)], [Cu₂(C₄H₄O₄)₂(C₁₂H₁₂N₂)]_n, (I), and poly[di-₄-succinato-₂-1,3-di-4-pyridylpropane-dicopper(II)], [Cu₂(C₄H₄O₄)₂(C₁₃H₁₄N₂)]_n, (II), exhibit polymeric structures with the dicopper units doubly bridged by bis-bidentate succinate groups and crosslinked by the separator bis(pyridyl) molecules. In (I), the molecule exhibits a centre of inversion located midway between the core Cu-dimer atoms and another that relates half of the bis(pyridyl)ethane ligand to the other half. Compound (II) has a similar molecular packing but with a doubled lattice constant and noncentrosymmetric core units. An antiferromagnetic interaction due to the dinuclear copper units was deduced from magnetic subsceptibility measurements, and spin triplet signals were detected in the electron paramagnetic resonance spectra for both compounds.

Formula: [Cu₂(C₄H₄O₄)₂(C₁₂H₁₂N₂)] and [Cu₂(C₄H₄O₄)₂(C₁₃H₁₄N₂)]

	Structure factor file (CIF format) (126.9 kbytes) [ doi:10.1107/S0108270109040566/fa3201Isup2.hkl ] Contains datablock I
	Structure factor file (CIF format) (224.3 kbytes) [ doi:10.1107/S0108270109040566/fa3201IIsup3.hkl ] Contains datablock II

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