(±)-2-Oxocyclopentaneacetic acid: catemeric hydrogen bonding in a γ-keto acid

Abstract

The title racemate, C7H10O3, aggregates in the solid as acid-to-ketone hydrogen-bonding catemers [O⋯O = 2.7050 (13) Å and O—H⋯O = 166.1 (17)°] having glide-related components. Four such heterochiral chains, paired centrosymmetrically about (, , ) in the cell, proceed through the cell in the 010 direction, with alignment with respect to the c axis of ++−−.