
%0 Journal Article
%A Bolzan, AA 
%A Fong, C 
%A Kennedy, BJ 
%A Howard, CJ 
%T Powder Neutron Diffraction Study of Pyrolusite, &#946;-MnO<sub>2</sub>
%J Australian Journal of Chemistry
%D 1993/06/01
%V 46
%N 6
%P 939-944
%K 
%R https://doi.org/10.1071/CH9930939
%U https://www.publish.csiro.au/paper/CH9930939 
%X The powder neutron diffraction pattern of pyrolusite, &#946;-MnO2 [P42/mnm, No. 136, a = 4.4041(1), c = 2.8765(1)&#506;], has been refined by the Rietveld method to give values for both the oxygen position parameter u=0.3046(1) and the anisotropic thermal parameters. The data confirm the MnO6 octahedra to be elongated with two long [1.894(1)&#506;] and four short [1.882(2)&#506;] Mn-O bond distances. The effect of the stereochemistry on the thermal vibrations is discussed. 
