
%0 Journal Article
%A Kennard, CHL 
%A O'Reilly, EJ 
%A Smith, G 
%A Mak, TCW 
%T Divalent Metal Complexes of 2-Formylphenoxyacetic Acid: The Crystal Structures of 2-Formylphenoxyacetic Acid, and the Isomorphous Cobalt(II) and Zinc(II) 2-Formylphenoxyacetates
%J Australian Journal of Chemistry
%D 1985/09/01
%V 38
%N 9
%P 1381-1389
%K 
%R https://doi.org/10.1071/CH9851381
%U https://www.publish.csiro.au/paper/CH9851381 
%X The crystal structures of 2-formylphenoxyacetic acid ( ofpaH ), tetraaquabis (2-formylphenoxyacetato)-cobalt(II) (1) and tetraaquabis (2- formylphenoxyacetato )zinc(II) (2) have been determined by X-ray diffraction and refined to residuals R 0.039, 0.058 and 0.045 for 1197, 1178 and 1230 observed reflections respectively. 2-Formylphenoxyacetic acid crystallizes in a monoclinic cell, space group P21/n with a 8.066(2), b 7.375(1), c 14.206(2) &#506;, &#946; 98.12(1)&#176; and Z 4. The planar molecules form unusual hydrogen-bonded chain polymers (O&#8230;O 2.694(3)&#506;] linked through the carboxyl groups. The complexes (1) and (2) are isomorphous, the comparative cells being a 5.036(1), b 13.463(3), c 15.083(4) &#506;, &#946; 96.88(2)&#176; for (1), and a 5.044(1), b 13.481(3), c 15.055(4) &#506;, &#946; 96.95(2)&#176; for (2), with Z 2 and space group P21. The complexes have four waters and two trans-related carboxyl oxygens [mean M-O distances 2.129(5) and 2.117(3) &#506; respectively] completing almost regular octahedral stereochemistries . The nickel(II) complex [Ni( ofpa )(H2O)4] is probably not isostructural with (1) and (2), and the copper(II) complex is also different, with formula [Cu( ofpa )2(H2O)2]. 
