Acta Cryst. (2008). E64, m138-m139  [ doi:10.1107/S1600536807064835 ]

A nearly planar arrangement of ions in 4,4'-bipiperidinium tetracyanidoplatinate(II) monohydrate

B. A. Maynard and R. E. Sykora

Abstract: The title compound, (C₁₀H₂₂N₂)[Pt(CN)₄]·H₂O, was isolated from solution as a molecular salt. The compound contains discrete 4,4'-bipiperidinium cations and tetracyanoplatinate(II) anions that are involved in a hydrogen-bonding network with one water molecule of hydration. The structure differs from that of the similar acetonitrile solvate, (C₁₀H₂₂N₂)[Pt(CN)₄]·2CH₃CN, in the orientation of the ions relative to one another. The hydrate reported here contains layers of nearly parallel cations and anions with an angle between their mean planes of only 4.35 (11)°, while in the acetonitrile solvate the cations and anions are nearly perpendicular to one another (86.1° between mean planes). The crystal showed partial inversion twinning.

Online 6 December 2007

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