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Raman spectroscopic investigations on the proton conduction in (NH4)3H(SO4)2

✍ Scribed by P. Rajagopal; G. Aruldhas; V. Ramakrishnan


Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
375 KB
Volume
50
Category
Article
ISSN
0022-3697

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The improper ferroelastic phase letovicite (NH 4 ) 3 H(SO 4 ) 2 has been studied by 1 H MAS NMR as well as by static 14 N NMR experiments in the temperature range of 296-425 K. The 1 H MAS NMR resonance from ammonium protons can be well distinguished from that of acidic protons. A third resonance ap

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A Raman spectroscopic study of (CH3NH,)2HgC14 is reported in the temperature range 299-373 K. Discontinuities in the Hg-Cl symmetric stretching mode and in the frequency shift of the C-N stretching mode indicate a new phase above 330 K. A non-hnear increment of the widths of these bands confirms the