Volume no :2, Issue no: 2, October (2010)

GEOMETRIC ISOTOPE EFFECT AND PHASE TRANSITION ON TUTTON SALT

Author's: T. Fukami, T. Tomimura and R. H. Chen
Pages: [147] - [164]
Received Date: October 29, 2010
Submitted by:

Abstract

Differential scanning calorimetry (DSC) and X-ray diffraction measurements have been performed on diammonium cobalt disulphate hexahydrate and deuterated crystals. Several transitions in both compounds at high temperature have been found by the DSC measurements. The structures of both compounds are redetermined accurately at room temperature. The isotope effect in these crystals has been studied. It is confirmed that the changes of O-H-O hydrogen bond length by the substitution of deuterium for hydrogen are in good agreement with that of many crystals with hydrogen bonds as previously reported by Ichikawa.

Keywords

Tutton salt, isotope effect, crystal structure, X-ray, DSC.