Acta Cryst. (2006). E62, o2641-o2643  [ doi:10.1107/S1600536806019726 ]

(+)-3,12-Dioxo-5-cholanic acid: hydrogen bonding in a diketo bile-acid derivative

E. M. Kikolski, M. Davison, R. A. Lalancette and H. W. Thompson

Abstract: The asymmetric unit of the title crystal structure, C₂₄H₃₆O₄, contains two independent molecules, differing only in their side-chain conformations and linked though O-HO hydrogen bonds by carboxyl pairing [OO = 2.6715 (17) and 2.6544 (17) Å; O-HO = 170 and 179°]. Six intermolecular C-HO=C close contacts were found.

Online 9 June 2006

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