Acta Cryst. (2007). E63, m360-m362  [ doi:10.1107/S160053680605553X ]

Calcium anilate hexahydrate

M. U. Schmidt, T. Schmiermund and M. Bolte

Abstract: Anilic acid or 2,5-dianilinoterephthalic acid, C₂₀H₁₆N₂O₄, is an intermediate in the industrial synthesis of quinacridone pigments. The title calcium aniloate compound, namely di--aqua-⁴O¹:O^1'-bis(-2,5-dianilinoterephthalo-²O:O')bis[triaquacalcium(II)] tetrahydrate, [Ca₂(C₂₀H₁₄N₂O₄)₂(H₂O)₈]·4H₂O, is a dimeric complex of two aniloate anions, two Ca²⁺ cations and eight water molecules, with a further four uncoordinated water molecules. The complex is situated on a crystallographic twofold axis, with two water O atoms lying on the rotation axis.

Online 10 January 2007

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