Acta Cryst. (2004). E60, m322-m324  [ doi:10.1107/S160053680400354X ]

Bis(triethanolamine-³N,O,O')copper(II) squarate

I. Ucar, O. Z. Yesilel, A. Bulut, H. Icbudak, H. Olmez and C. Kazak

Abstract: In the crystal structure of the title compound, [Cu(C₆H₁₅NO₃)₂](C₄O₄), the cations and anions are located on inversion centres and a supramolecular architecture is formed. Two triethanolamine (TEA) ligands coordinate to the Cu^II ion through four O atoms and two N atoms acting as N,O,O'-tridentate ligands, resulting in a distorted octahedral environment, with Cu-O bond distances of 2.0199 (17) and 2.288 (2) Å and a Cu-N distance of 2.0340 (18) Å. The squarate (C₄O₄^2-) anions and [Cu(TEA)₂]²⁺ cations are linked to each other by hydrogen bonding between coordinated hydroxyl H atoms of TEA and squarate O atoms, forming layers. Adjacent layers are interlinked by hydrogen bonding between free hydroxyl H atoms of TEA and one of the squarate O atoms.

Online 20 February 2004

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