The Rotational Structure of the Vibrational States and Substates of Symmetry E in CF4

• Published in: Journal of molecular spectroscopy Vol. 172; no. 2; pp. 303 - 318
• Main Authors: Brodersen, S., Zhilinskii, B.I.
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 01.08.1995
• ISSN: 0022-2852; 1096-083X
• DOI: 10.1006/jmsp.1995.1180

In continuation of previous papers on the rotational structure of vibrational states in CF4 (S. G. Larsen and S. Brodersen, J. Mol. Spectrosc.157, 220-236, 1993 and B. I. Zhilinski, S. Brodersen, and M. Madsen, J. Mol. Spectrosc.160, 192-216, 1993; and S. Brodersen and B. I. Zhilinskii, J. Mol. Spectrosc.169, 1-17, 1995) the splitting of the vibrational states or substates of symmetry E is discussed in detail. It is found that all such states split into two vibrational components, the possible symmetries of which were predicted in a previous paper ( B. I. Zhilinskii and S. Brodersen, J. Mol. Spectrosc.163, 326-338 (1994)). In the middle of each double manifold a cluster appears, the position of which determines the symmetries of the two components. The states ν2, ν1 + ν2, and 3ν2(E)in all three isotopic species are found to have a central 80 cluster which usually belongs to the upper component, causing this to have D(J+2)u symmetry and the lower to have D(J−2)g symmetry. For a few J values in the 3ν2(E) of 12CF4 the central cluster belongs to the lower component, causing this to have D(J+2)g symmetry and the upper component to have D(J−2)u symmetry. The splitting of the 2ν2(E) substate is completely different in all three isotopic species. The central 120 cluster belongs to the upper component, causing this to have D(J+4)g symmetry and the lower to have D(J−4)u symmetry. Further possibilities of types of splittings are discussed. Finally, a review is given of the main results of all five papers.