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Inne
Raman studies of the anionic sublattice vibrations in (C5H5NH)6Bi4Cl18.
Autorzy
Rok wydania
2002
Czasopismo
Journal of Molecular Structure
Numer woluminu
614
Strony
333-338
DOI
10.1016/S0022-2860(02)00268-5
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Low frequency Raman spectroscopic studies (5–400 cm−1) were carried out for single crystal samples of (C5H5NH)6Bi4Cl18 within the temperature range 37–285 K to look for possible spectral changes resulting from the phase transitions at 122 and 154 K. A detailed analysis of frequencies, band widths and intensities of the bands was made for the () and () spectra through the phase transitions to understand their nature. It was shown that the transitions are not accompanied by any mode softening, thus indicating their order–disorder nature. However, the ordering of the pyridinium cations close to 122 and 154 K exerts a strong influence on the (Bi4Cl186−) anion.
Słowa kluczowe
Raman spectra, Phase transition, Chlorobismuthates(III)
Adres publiczny
https://doi.org/10.1016/S0022-2860(02)00268-5
Strona internetowa wydawcy
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