✦ LIBER ✦
Polarized Raman and IR spectra of magnesium diammonium bis(hydrogen orthophosphate) tetrahydrate
✍ Scribed by V. S. Jayakumar; P. Rajagopal; G. Aruldhas
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 249 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0377-0486
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✦ Synopsis
Abstract
The polarized Raman and IR spectra of Mg(NH~4~)~2~(HPO~4~)~2~·4H~2~O and its partially deuterated polycrystalline sample were recorded and analysed. The presence of bands characteristic of HPO^2−^~4~ and DPO^2−^~4~ ions are interpreted in terms of the proton polarizabilities of the HPO^2−^~4~ and jDPO^2−^~4~ ions. The ammonium ion is free to rotate in the crystal and crystallographically distinct NH~4~^+^ ions exist. Hydrogen bonding of different groups is also discussed.