Acta Cryst. (2004). E60, m764-m766  [ doi:10.1107/S1600536804010748 ]

The tris(malonato)chromate(III) anion with an organic cation

D. Ghosh, D. R. Powell and J. D. Van Horn

Abstract: The structure of 1,2-bis(4-pyridyl)ethylenium tris(malonato-²O,O')chromate(III) octahydrate, (Hbpe)₃[Cr(mal)₃]·8H₂O, where mal is the malonate dianion (C₃HO₄^2-) and bpe is 1,2-bis(4-pyridyl)ethylene (C₁₂H₁₂N₂), is presented. The crystal structure is made up of [Cr(mal)₃]^3- anions, Hbpe⁺ cations and water molecules of crystallization. The anions are connected through hydrogen bonding involving malonate O atoms and uncoordinated water molecules in distinct layers, with the cations stacked in separate layers. One of the Hbpe cations is located on a center of inversion, another one on a twofold rotation axis.

Online 15 May 2004

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