Theorie der Intensitäten der Schwingungsspektren von Kettenmolekeln. 1. Allgemeine Theorie der Berechnung von Intensitäten der Infrarotspektren von grossen Molekeln
- 1 January 1955
- journal article
- research article
- Published by Wiley in Helvetica Chimica Acta
- Vol. 38 (5) , 1254-1262
- https://doi.org/10.1002/hlca.19550380521
Abstract
A new method for the calculation of the intensities of infrared absorption bands is given. This method is based on the assumption of a quadratic potential function and the use of Wilson's F‐ and G‐matrices. The Sayvetz conditions are satisfied from the outset by using appropriate internal symmetry coordinates. It avoids the explicite application of the characteristic vectors of F with respect to G−1 and requires only the calculation of the reciprocals of these matrices. As a partial result a complete set of rules for the intensities of isotopic molecules are obtained. Two of these rules were already known. Furthermore a number of special cases are discussed, whereby some approximate rules for the intensities of group vibration are obtained.Keywords
This publication has 3 references indexed in Scilit:
- Intensities in Raman spectra I. A bond polarizability theoryProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1953
- Vibrational Intensities. II. The Use of IsotopesThe Journal of Chemical Physics, 1952
- Moderne AlgebraPublished by Springer Nature ,1937