Acta Cryst. (2008). E64, m1124-m1125  [ doi:10.1107/S1600536808024550 ]

The cocrystal -oxalato-⁴O¹,O²:O^1',O^2'-bis(aqua(nitrato-O){[1-(2-pyridyl-N)ethylidene]hydrazine-N}copper(II)) -oxalato-⁴O¹,O²:O^1',O^2'-bis((methanol-O)(nitrato-O){[1-(2-pyridyl-N)ethylidene]hydrazine-N}copper(II)) (1/1)

M. Diallo, F. B. Tamboura, M. Gaye, A. H. Barry and Y. Bah

Abstract: The title cocrystal, [Cu₂(C₂O₄)(NO₃)₂(C₇H₉N₃)₂(H₂O)₂][Cu₂(C₂O₄)(NO₃)₂(C₇H₉N₃)₂(CH₄O)₂], is a 1:1 cocrystal of two centrosymmetric Cu^II complexes with oxalate dianions and Schiff base ligands. In each molecule, the Cu^II centre is in a distorted octahedral cis-CuN₂O₄ environment, the donor atoms of the N,N'-bidentate Schiff base ligand and the bridging O,O'-bidentate oxalate group lying in the equatorial plane. In one molecule, a monodentate nitrate anion and a water molecule occupy the axial sites, and in the other, a monodentate nitrate anion and a methanol molecule occupy these sites. In the crystal structure, intermolecular N-HO, O-HO and N-HN hydrogen bonds link the molecules into a network. Weak intramolecular N-HO interactions are also observed.

Online 6 August 2008

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