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Kolekcje
Inne
On some spectroscopic properties of a layered 1,3-diammoniumpropylene tetrabromocadmate hybrid crystal.
Autorzy
Rok wydania
2014
Czasopismo
Journal of Molecular Structure
Numer woluminu
1074
Strony
723-731
DOI
10.1016/j.molstruc.2014.05.036
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Various techniques of measurements: differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), differential thermal analysis (DTA), infrared (IR), far infrared (FIR) and Raman spectroscopy have been used to investigate the phase transitions in NH3(CH2)3NH3CdBr4 crystal. DSC showed the existence of phase transitions at T1 = 326 K (classified as second-order) and T2 = 368 K (classified as first-order). The IR, FIR and Raman spectra for powered crystal were studied in the wide temperature range. The Raman spectrum has been obtained from the single crystal. Cationic and anionic contribution to the phase transitions mechanism by analysis of the temperature changes of wavenumber, width and intensity of the bands with an assignment of some bands due to internal modes have been proposed and obtained.
Słowa kluczowe
hybrides, infrared spectroscopy, Raman spectroscopy, phase transitions, Differential scanning calorimetry (DSC)
Adres publiczny
http://dx.doi.org/10.1016/j.molstruc.2014.05.036
Strona internetowa wydawcy
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