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The hexylenediammonium pentachlorobismuthate, NH3(CH2)6NH3BiCl5 crystal has been studied by means of XRD, DSC and spectroscopy (IR and Raman)techniques.
The X-ray powder study develooped at different temperatures showed that the crystal exhibits two phase transitions near 286 K and 326 K.
The DSC analysis (on heating and couling) confirmed the existence of these phase transitions at 291/286 K and 326/325 K.
The Raman spectroscopy study made at various temperatures showed that both anionic and cationic motions contribute to the complex transition mechanisms.
Ali Ouasri, a Ph.D.
degree in Inorganic Chemistry, in 2002.
He is currently professor in the Regional Centre of the Education and Training Trades, Rabat, Morocco.
Ali Rhandour, a Ph.D.
degree in Solid Sate Chemistry, in 1985.
He is currently professor in the Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco.
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