Acta Cryst. (2010). E66, o2146-o2147 [ doi:10.1107/S1600536810029703 ]
Abstract: In the crystal structure of the title compound, C6H16N+·C34H52O2PS2- or [(CH3CH2)3NH]+·[C34H52O2PS2]-, the cation and anion are paired via weak, intermolecular, bifurcated N-H(S,S) hydrogen bonds. The cholesteryl units form an alternating (herringbone) motif as well as an infinitely stacked layered structure along the b axis. The P-S bond lengths [1.975 (2) and 1.981 (2) Å compared with ca 1.92 Å for a formal P=S double bond and with ca 2.01 Å for a P-S single bond] suggest delocalization of the negative charge between the P-S bonds. A distorted tetrahedral geometry around the P atom is revealed by non-ideal O-P-C and S-P-S bond angles of 96.7 (2) and 115.52 (11)°, respectively.
Online 31 July 2010
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