Re. Gerkin, HYDROGEN-BONDING AND RING ASYMMETRY IN A SUBSTITUTED CYCLOPROPANE - (-TRANS-(1S,2S)-2-PHENYLCYCLOPROPANECARBOXYLIC ACID AT 208 K()), Acta crystallographica. Section C, Crystal structure communications, 53, 1997, pp. 1280-1282
The title compound, C10H10O2 crystallized in space group P2(1) with tw
o molecules in the asymmetric unit. In this structure, hydrogen bondin
g of the cyclic dimer type [with O ... O 2.623 (2)-2.637 (2) Angstrom]
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 f
or the asymmetry parameters are delta(COOH) = -0.034 (4) and -0.025 (4
) Angstrom, and delta(phenyl) = -0.028 (4) and -0.023 (4) Angstrom.