Acta Crystallographica Section C

Crystal Structure Communications

Volume 60, Part 7 (July 2004)



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Acta Cryst. (2004). C60, m345-m347    [doi:10.1107/S0108270104012636]

Cobalt(II), nickel(II) and copper(II) complexes of isoquinoline-3-carboxylate

N. Okabe, Y. Muranishi and M. Odoko

Abstract: The crystal structures of the title complexes, namely trans-bis(isoquinoline-3-carboxylato-[bold kappa]2N,O)bis(methanol-[bold kappa]O)cobalt(II), [Co(C10H6NO2)2(CH3OH)2], and the corresponding nickel(II) and copper(II) complexes, [Ni(C10H6NO2)2(CH3OH)2] and [Cu(C10H6NO2)2(CH3OH)2], are isomorphous and contain metal ions at centres of inversion. The three compounds have the same distorted octahedral coordination geometry, and each metal ion is bonded by two quinoline N atoms, two carboxylate O atoms and two methanol O atoms. Two isoquinoline-3-carboxylate ligands lie in trans positions, forming the equatorial plane, and the two methanol ligands occupy the axial positions. The complex molecules are linked together by O-H...O hydrogen bonds between the methanol ligands and neighbouring carboxylate groups.

Formula: [Co(C10H6NO2)2(CH4O)2], [Ni(C10H6NO2)2(CH4O)2] and [Cu(C10H6NO2)2(CH4O)2]

Online 22 June 2004


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