
%0 Journal Article
%A Farrand, A 
%A Gregson, AK 
%A Skelton, BW 
%A White, AH 
%T Crystal structure of the ferromagnetic polymer potassium Bis(carbonato)cuprate(II)
%J Australian Journal of Chemistry
%D 1980/02/01
%V 33
%N 2
%P 431-434
%K 
%R https://doi.org/10.1071/CH9800431
%U https://www.publish.csiro.au/paper/CH9800431 
%X The crystal structure of the title compound, K2Cu(CO3)2, has been determined by single-crystal X-ray diffraction at 295(1) K, and refined by least squares to a residual of 0.027 for 1441 'observed' reflections. Crystals are orthorhombic, space group Fdd2, a 11.425(3), b 17.658(4), c 6.154(2) A, Z 8. The structure comprises potassium cations embedded in an infinite three-dimensional polymeric anionic array of square-planar coordinated copper atoms with bridging carbonate groups [Cu-O 1.934(2), 1.936(2) &#506;]. Within the latter, the non- coordinating oxygen-carbon bond is shorter [1.259(3) &#506;] than the other two [1.303(3), 1.307(2) &#506;] and the O-C-O angle opposite it is correspondingly reduced to 117.1(2)&#176;. The CO3 plane lies at 83.9&#176; to the CuO4 'plane'. 
