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Tungsten Sulfides obtained by Decomposition of Ammonium Tetrathiotungstate
Author(s) -
Voorhoeve R. J. H.,
Wolters H. B. M.
Publication year - 1970
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19703760210
Subject(s) - tungsten , thermal decomposition , electron paramagnetic resonance , stoichiometry , crystallization , differential thermal analysis , decomposition , inorganic chemistry , ammonium , materials science , chemistry , diffraction , metallurgy , nuclear magnetic resonance , organic chemistry , physics , optics
The decomposition of ammonium tetrathiotungstate, (NH 4 ) 2 WS 4 , and the nature of the resulting tungsten sulfides have been studied, mainly by X‐ray diffraction, differential thermal analysis, optical microscopy and electron spin resonance. Non‐stoichiometric tungsten trisulfide may be obtained by decomposition of (NH 4 ) 2 WS 4 at about 200°C. At 330°C crystallization of tungsten disulfide starts. Characteristic electron spin resonance spectra have been obtained for both sulfides.