Pressure induced spectra of axially symmetric and slightly asymmetric quadrupolar molecules

Autor:	Judith O. Zwicker, Robert H. Cole
Rok vydání:	1974
Předmět:	Chemistry Chemical polarity Analytical chemistry General Physics and Astronomy Molecular physics Symmetry (physics) Spectral line Dipole Moment (physics) Quadrupole Physics::Chemical Physics Physical and Theoretical Chemistry Absorption (chemistry) Axial symmetry
Zdroj:	The Journal of Chemical Physics. 60:4780-4789
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.1680981
Popis:	Expressions are derived for the transition moments and absorption resulting from the electric moment induced in one molecule of a pair by the field of the quadrupole moments of a neighbor with axial or near axial symmetry. Values of relevant matrix elements of squares and products of direction cosines are included. For axial polar molecules, the infrared absorption has a different frequency dependence than that by permanent dipoles, permitting separation of the effects. For asymmetric rotors with nearly axial inertial symmetry, the absorption transitions with ΔK=0 are associated with one of the two quadrupole moments and transitions with ΔK=±2 with the other, again permitting spectral resolution of the different contributions. These possibilities are analyzed in some detail for the polar molecules CH3F and CHF3 and for the asymmetric rotor C2H4.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5bbfad1f93bdf443d84a9ff1c17af9a9 https://doi.org/10.1063/1.1680981 Zobrazit plný text záznamu