Acta Cryst. (2006). E62, m3448-m3450  [ doi:10.1107/S1600536806048148 ]

9-(2-Carboxyphenyl)-3,6-bis(diethylamino)xanthylium bis(2-thioxo-1,3-dithiole-4,5-dithiolato)nickelate(III)

Y. Soneta, S. Sakamoto and K. Miyamura

Abstract: In the title compound, (C₂₈H₃₁N₂O₃)[Ni(C₃S₅)₂], the two symmetry-independent anions are located on inversion centres and adopt planar conformations with an approximate D_2h symmetry. The Ni atoms both show a square-planar coordination geometry. The xanthene system is planar, with the attached benzene ring twisted by 75.8 (11)° from the xanthene plane. One of the four ethyl groups of the cation is disordered. The xanthylium cation and one of the symmetry-independent 2-thioxo-1,3-dithiole-4,5-dithiolate anions are arranged into columns, with the anion sandwiched between hydrogen-bonded dimers of the cation. The second symmetry-independent anion is enclosed between these columns.

Online 24 November 2006

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