Infrared and Raman spectra of magnesium ammonium phosphate hexahydrate (struvite) and its isomorphous analogues. I. Spectra of protiated and partially deuterated magnesium potassium phosphate hexahydrate

✍ Scribed by V Stefov; B Šoptrajanov; F Spirovski; I Kuzmanovski; H.D Lutz; B Engelen

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 253 KB
• Volume: 689
• Category: Article
• ISSN: 0022-2860
• DOI: 10.1016/j.molstruc.2003.08.019

✦ Synopsis

The Fourier transform infrared and Raman spectra of magnesium potassium phosphate hexahydrate and a series of its deuterated analogues were recorded and analyzed. By comparing the spectra recorded at room temperature with those obtained at the boiling temperature of liquid nitrogen and by studying the spectra of the series of partially deuterated MgKPO 4 •H 2 O an assignment was proposed for the observed bands. The unusual behavior for bands originating from the n 4 modes of PO 4 32 ions in the Raman spectra of partially deuterated analogues of MgKPO 4 •6H 2 O was explained by coupling and mixing of the n 4 ðPO 4 Þ mode and D 2 O librations.