Acta Crystallographica Section C

Crystal Structure Communications

Volume 58, Part 4 (April 2002)

metal-organic compounds

 

(2,2'-Bipyridine-²N,N')(dichromato-O)copper(II)

P. A. Maggard, A. L. Kopf, C. L. Stern and K. R. Poeppelmeier

Abstract: The title compound, [Cu(Cr₂O₇)(C₁₀H₈N₂)₂], a new mixed-metal molecular compound, contains isolated molecular units, each comprised of one Cu^II atom coordinated to two 2,2'-bipyridine ligands and also to an oxygen vertex of a dichromate anion. The Cu^II atom has an approximate trigonal-bipyramidal geometry, which is consistent with previous studies. Both enantiomers of the chiral complex molecule are present and are related by inversion centers. In a reported pyridine analogue, achiral [Cu(Cr₂O₇)(pyridine)₄] chains pack in the non-centrosymmetric space group Pna2₁. Differences in the organic ligands influence the chirality and dimensionality of the Cu-Cr₂O₇ bonding.

Formula: [Cu(Cr₂O₇)(C₁₀H₈N₂)₂]

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