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Phase transitions in triammonium hydrogen disulphate: Crystal structure of an intermediate stable phase at-90 degrees C

Sooryanarayana, K and Row, Guru TN and Robinson, Ward T (1999) Phase transitions in triammonium hydrogen disulphate: Crystal structure of an intermediate stable phase at-90 degrees C. In: Phase Transitions: A Multinational Journal, 69 (4). pp. 429-438.

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Official URL: http://www.tandfonline.com/doi/abs/10.1080/0141159...

Abstract

Triammonium hydrogen disulphate, (NH4)(3)H(SO4)(2), belongs to the family of crystal structures M3H(XO4)(2) (with M = NH4, K, Rb, Cs, and X = S, Se) which display super protonic phases at elevated temperatures, while at room temperature these are relatively poor proton conductors. The crystal structure of triammonium hydrogen disulphate has been determined by X-ray diffraction at -90 degrees C and the variation in the characteristics of the hydrogen bond is discussed in comparison with that of the structures at -110 degrees C and room temperature. It is concluded that the mechanics involving the proton migration in such systems is realised in terms of the variations in the hydrogen bond features with temperature.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Taylor and Francis Group.
Keywords: Structural phase transitions;Triammonium hydrogen disulphate;Intermediate stable phase;X-ray crystallography;Hydrogen bond
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 28 Jun 2011 10:07
Last Modified: 28 Jun 2011 10:07
URI: http://eprints.iisc.ernet.in/id/eprint/38715

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