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- Title
Vibrational analysis of Fourier transform spectrum of the A³Π<sub>0</sub>-X¹Σ<sup>+</sup> and B³Π<sub>1</sub>-X¹Σ<sup>+</sup> transitions of indium monobromide.
- Authors
Singh, Renu; Uttam, K. N.; Saksena, M. D.; Deo, M. N.
- Abstract
The emission spectrum of InBr molecule has been recorded in the region 350-400 nm on BOMEM DA8 Fourier transform spectrometer at an apodized resolution of 0.06 cm-1 using microwave excitation technique. About 61 violet degraded and single headed bands have been recorded and are classified into two band systems, viz. A3+Π0-X1Σ +and B3Π1-X1Σ+. A few new bands have been observed and are fitted in the vibrational schemes of the two systems. Revised vibrational constants have been determined. The vibrational assignments have been confirmed by observing isotope effect due to InBr81 in the 30 bands of the A3+Π0-X1Σ + system and 19 bands of the B3Π1-X1Σ+ system. The analysis is further supported by calculating the Franck-Condon factor for InBr79 and InBr81 molecules. The following vibrational constants (in cm-1) have been determined from the analysis: A3+Π0-X1Σ + system: v00 = 26599:1 w'e = 226:42, w'eX'e = 1:24 cm-1, w"e = 221:19,w"eX"e = 0:528 cm-1. B3Π1-X1Σ+ system: V00 = 27380:52 w'e = 223:086, w'e = 1:446 cm-1, w"e = 221:19, w"eX"e = 0:528 cm-1.
- Subjects
INDIUM compounds; ISOTOPES; VIBRATIONAL spectra; FOURIER transform spectroscopy; FRANCK-Condon principle
- Publication
Pramana: Journal of Physics, 2009, Vol 73, Issue 5, p889
- ISSN
0304-4289
- Publication type
Article
- DOI
10.1007/s12043-009-0156-y