title: (Cyclohexylideneamino)oxyacetic acid and [chloro(phenyl)methyleneamino]oxyacetic acid: hydrogen-bonded R(2)(2)(8) dimers and aromatic pi-pi stacking interactions.
abstract: Molecules of (cyclohexylideneamino)oxyacetic acid, C(8)H(13)NO(3), (I), are linked into centrosymmetric dimers by pairs of O-H.O hydrogen bonds [H.O = 1.84 A, O.O = 2.6782 (12) A and O-H.O = 178 degrees ]. In [chloro(phenyl)methyleneamino]oxyacetic acid, C(9)H(8)ClNO(3), (II), the molecules are similarly linked into centrosymmetric dimers by pairs of O-H.O hydrogen bonds [H.O = 1.79 A, O.O = 2.6329 (17) A and O-H.O = 176 degrees ], and these dimers are weakly linked into chains by a single type of aromatic pi-pi stacking interaction.
authors.affiliation: School of Chemistry, University of St Andrews, Fife KY16 9ST, Scotland. cg@st-andrews.ac.uk
authors.forename: Christopher
authors.initials: C
authors.lastname: Glidewell
authors.forename: John N
authors.initials: JN
authors.lastname: Low
authors.forename: Janet M S
authors.initials: JM
authors.lastname: Skakle
authors.forename: James L
authors.initials: JL
authors.lastname: Wardell