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Convenient synthesis and Raman spectral characterization of diammonium monomolybdate(VI)

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Title Statement Convenient synthesis and Raman spectral characterization of diammonium monomolybdate(VI)
 
Added Entry - Uncontrolled Name Srinivasan, Bikshandarkoil R; School of Chemical Sciences, Goa University, Goa 403 206, India
Morajkar, Sudesh M; School of Chemical Sciences, Goa University, Goa 403 206, India
UGC, New Delhi
 
Uncontrolled Index Term Synthetic and structural inorganic chemistry
Diammonium monomolybdate(VI), Ammonium heptamolybdate tetrahydrate, Grinding, Ammonium bicarbonate
 
Summary, etc. A convenient and cost-effective method is reported for the preparation of gram quantities of an ammonium-rich Mo compound viz. diammonium monomolybdate(VI) (NH<sub>4</sub>)<sub>2</sub>MoO<sub>4</sub> (<strong>1</strong>). The process involves a thorough grinding of a commercial sample of ammonium heptamolybdate tetrahydrate (NH<sub>4</sub>)<sub>6</sub>[Mo<sub>7</sub>O<sub>24</sub>]·4H<sub>2</sub>O with an excess of ammonium bicarbonate followed by thermal treatment. The facile formation of (<strong>1</strong>) is confirmed by its characteristic Raman spectrum. The use of Raman spectroscopy to distinguish between tetrahedral monomolybdate(VI) and heptamolybdate, dichromate and monochromate(VI), paratungstate and monotungstate(VI) as well as the identification of the species present in ammoniacal solutions of MO<sub>3</sub> (M = Cr, Mo, W) are reported.
 
Publication, Distribution, Etc. Indian Journal of Chemistry -Section A (IJCA)
2020-12-16 16:36:46
 
Electronic Location and Access application/pdf
http://op.niscair.res.in/index.php/IJCA/article/view/31041
 
Data Source Entry Indian Journal of Chemistry -Section A (IJCA); ##issue.vol## 59, ##issue.no## 12 (2020): INDIAN JOURNAL OF CHEMISTRY - SECTION A
 
Language Note en
 
Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJCA/article/download/31041/465495420
http://op.niscair.res.in/index.php/IJCA/article/download/31041/465495421
http://op.niscair.res.in/index.php/IJCA/article/download/31041/465495430
 
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