
%0 Journal Article
%A Bott, RC 
%A Sagatys, DS 
%A Lynch, DE 
%A Smith, G 
%A Kennard, CHL 
%A Mak, TCW 
%T The Preparation and Crystal Structure of Ammonium Bis[citrato(3-)]cuprate(II)
%J Australian Journal of Chemistry
%D 1991/10/01
%V 44
%N 10
%P 1495-1498
%K 
%R https://doi.org/10.1071/CH9911495
%U https://www.publish.csiro.au/paper/CH9911495 
%X The copper(II) complex with citric acid (NH4)4 [Cu(C6H5O7)2] has been prepared, and its structure determined by X-ray diffraction, giving a residual R 0.035 for 1208 observed reflections. Crystals are monoclinic, space group P21/c with Z 2 in a cell of dimensions a 8.755(3), b 13.185(4), c 9.364(2)&#506;, &#946; 113.73(2)&#176;. The complex is a centrosymmetric six-coordinate monomer which is isomorphous with ammonium zinc(II) citrate. However, the Cu-O(hydroxyl) bonds [2.341(3)&#506;] show Jahn-Teller distortion relative to the Cu-O(carboxyl) bonds [1.969(3) and 1.977(3)&#506;]. 
