Acta Crystallographica, Section C: Crystal Structure Communications 1997-09-15

Hydrogen bonding and ring asymmetry in a substituted cyclopropane: (+)-trans-(1S,2S)-2-phenylcyclopropanecarboxylic acid at 208 K.

R E Gerkin

Index: Acta Crystallogr. C 53 ( Pt 9) , 1280-2, (1997)

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Abstract

The title compound, C10H10O2, crystallized in space group P2(1) with two molecules in the asymmetric unit. In this structure, hydrogen bonding of the cyclic dimer type [with O ... O 2.623(2)-2.637(2)A] links the two molecules of the asymmetric unit. The two carboxylic H atoms are ordered, as are the O atoms. Each of the two non-equivalent molecules exhibits an asymmetric cyclopropane ring; the values found for the asymmetry parameters are delta(COOH) = -0.034(4) and -0.025(4)A, and delta(phenyl) = -0.028(4) and -0.023(4)A.