The use of Raman spectroscopy as a probe for the intermolecular bonding in crystalline tetraphosphorus trisulphide

Autor:	Gary R. Burns, Joanne R. Rollo
Rok vydání:	1987
Předmět:	chemistry.chemical_classification Stereochemistry Chemistry Phonon Intermolecular force Analytical chemistry General Chemistry Soft modes Condensed Matter Physics symbols.namesake Molecular solid symbols General Materials Science Raman spectroscopy Softening Inorganic compound Raman scattering
Zdroj:	Journal of Physics and Chemistry of Solids. 48:347-354
ISSN:	0022-3697
DOI:	10.1016/0022-3697(87)90093-x
Popis:	The temperature and pressure dependences of the internal and external first-order Raman-active phonons of crystalline α-P 4 S 3 are shown to provide a sensitive probe of the intermolecular bonding. Comparison with a similar study of α-P 4 Se 3 leads to the conclusion that while intra-intermolecular coupling is present, it is weaker in crystalline α-P 4 S 3 . Unlike α-P 4 Se 3 , no rigid layer mode is observed nor is there any softening of the A 1 mode at 440 cm −1 analogous to the 361 cm −1 soft mode of α-P 4 Se 3 . Weak intra-intermolecular coupling is also supported by an analysis of the implicit-explicit contributions to the observed temperature coefficients. A pressure dependent increase in the intensity of the A 1 mode at 440 cm −1 is compared to similar pressure dependent changes in intensity for phonons in other inorganic molecular solids.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a1524c39e50f9c0055ebe51e4ce3b965 https://doi.org/10.1016/0022-3697(87)90093-x Zobrazit plný text záznamu