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  • Title: (NH4)2WTe2O8 at 5.09 GPa: a single-crystal study using synchrotron radiation.
    Author: Grzechnik A, Halasyamani PS, Kim JH, Friese K.
    Journal: Acta Crystallogr C; 2010 Jul; 66(Pt 7):i79-81. PubMed ID: 20603546.
    Abstract:
    The polar crystal structure of diammonium [octaoxidoditellurato(IV)]tungstate, (NH(4))(2)WTe(2)O(8), was studied at high pressures using single-crystal X-ray diffraction in a diamond-anvil cell at the HASYLAB synchrotron (DESY, Hamburg, Germany). No phase transition was observed up to 7.16 GPa. However, a full structure determination at 5.09 GPa shows that the coordination number of one of the two non-equivalent Te atoms has decreased from four to three.
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