Acta Cryst. (2004). E60, m45-m47  [ doi:10.1107/S160053680302779X ]

Diaqua(diethylenetriamine-³N)(perchlorato-O)copper(II) hydrogenmaleate

J. Valdés-Martínez, R. A. Toscano and M. D. Río-Ramírez

Abstract: The title compound, [Cu(ClO₄)(dien)(H₂O)₂](Hmal), where dien is diethylenetriamine (C₄H₁₃N₃) and Hmal (C₄H₃O₄) is the hydrogenmaleate anion, contains discrete [Cu(dien)(H₂O)₂]²⁺ cations and ClO₄^- and Hmal^- anions. The cation has a square-pyramidal geometry for the primary dien and aqua ligands, with the perchlorate weakly coordinated in a sixth position opposite the apex. The cation and anion lie on crystallographic mirror planes. For the cation, the mirror plane bisects the molecule and runs through two O atoms of the water molecules and the central N atom of the dien ligand. The mirror plane bisects the perchlorate through Cl and two O atoms. A mirror plane is perpendicular to the plane of the Hmal anion, bisecting the central C=C double bond and containing the hydroxyl H atom.

Online 12 December 2003

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