title: Hydrogen bonding and ring asymmetry in a substituted cyclopropane: (+)-trans-(1S,2S)-2-phenylcyclopropanecarboxylic acid at 208 K.
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.
authors.affiliation: Department of Chemistry, Ohio State University, Columbus 43210, USA. gerkin@chemistry.ohio-state.edu
authors.forename: R E
authors.initials: RE
authors.lastname: Gerkin
mesh_terms: D002264:Carboxylic Acids / Q000737:chemistry*; D018360:Crystallography, X-Ray; D003521:Cyclopropanes / Q000737:chemistry*; D006860:Hydrogen Bonding; D008961:Models, Structural; D008968:Molecular Conformation
chemical_list: D002264:Carboxylic Acids; D003521:Cyclopropanes; C108892:2-phenylcyclopropanecarboxylic acid