
%0 Journal Article
%A Smith, Graham 
%A Cooper, Catherine J. 
%A Chauhan, Veena 
%A Lynch, Daniel E. 
%A Parsons, Simon 
%A Healy, Peter 
%T Conformational Comparisons Between Phenoxyacetic Acid Derivatives in Adducts and in the Free Form
%J Australian Journal of Chemistry
%D 1999/08/19
%V 52
%N 7
%P 695-704
%K 
%R https://doi.org/10.1071/CH99020
%U https://www.publish.csiro.au/paper/CH99020 
%X Six molecular complexes containing the herbicidally active (2,4-dichlorophenoxy)acetic acid (2,4-d) and (2,4,5-trichlorophenoxy)acetic acid (2,4,5-t) have been prepared and studied by using single-crystal X-ray diffraction techniques. These adduct structures are 2,4-d with 4,4&#8242;-dipyridine (2 : 1 complex), and 2,4,5-t with respectively 5-nitroquinoline (1 : 1), 4,4&#8242;-dipyridine (2 : 1), 2-amino-2-thiazoline (1 : 1), 2-aminobenzothiazole (1 : 1) and 2-amino-5-ethyl-1,3,4-thiadiazole (1 : 1). The conformations of the phenoxyacetic acid molecules were found to be either synclinal (in three cases) or antiperiplanar (in the other three cases). A general review is also made about the conformational aspects of previously reported adducts of phenoxyacetic acid derivatives and how they compare to their free acid structures. 
