
%0 Journal Article
%A Campbell, M 
%A Mcleish, MJ 
%A Lynch, DE 
%A Smith, G 
%A Byriel, KA 
%A Kennard, CHI 
%T The Preparation and Crystal Structure of 2-Phenoxypropenoic Acid
%J Australian Journal of Chemistry
%D 1992/12/01
%V 45
%N 12
%P 2061-2066
%K 
%R https://doi.org/10.1071/CH9922061
%U https://www.publish.csiro.au/paper/CH9922061 
%X The potential herbicide 2-phenoxypropenoic acid has been synthesized, and its structure has been determined by X-ray methods and refined to a residual R 0.068 for 564 observed reflections. Crystals are orthorhombic, space group Pbca with Z 8 in a cell of dimensions a 5.6547(9), b 9.263(2), c 31.76(1) Å . The carboxylic acid groups form centrosymmetric hydrogen-bonded cyclic dimers [O&#8230;O 2.62(1) Å ], while the oxypropenoic acid side chain is essentially planar but inclined to the plane of the benzene ring [dihedral angle 71.5(7)&#176;]. 
