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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 21, Number 1
BKCSDE 21(1)
January 20, 2000

Title	Electronic Spectroscopy and Structure of CLF
Author	Vadim A. Alekseev, D. W. Setser
Keywords
Abstract	Optical-optical double resonance experiments have been used to identify and characterize five ion-pair states and several of the bound and repulsivevalence states of ClF. This report provides a description of these exper-iments for 35 ClF and 37 ClF, and a summary of the current knowledge of the valenceand ion-pair states. The important role of perturbations among the rovibronic levels of the bound valence states and their utilization in the double resonance technique is discussed. The ion-pair states of the same symmetry, Ω=0 + (E and f) and 1( β and G) interact very strongly and the spectroscopy of these states is anomalous and, hence, interesting. Com-parison is made to some recent ab initio calculations for ClF. One possible explanation ofhe irregular vibra-tionalenergy levels and rotational constants of the ion-pair states of 0 +and 1 symmetry is a crossing of the diabatic potentials of these states. Some currently unresolved questions about ClF spectroscopy are posed for future work.Where appropriate, analogy is made between the electronic states of ClF and the corresponding valence and ion-pair states of Cl2.
Page	9 - 22
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