Analysis of the Electronic Vibrational Spectra of Bisanthene by Calculating Normal Modes |
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| Authors: | G G D'yachenko V A Petukhov S M Arabei T A Pavich |
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| Institution: | (1) P. N. Lebedev Physical Institute, Russian Academy of Sciences, 53 Lenin Ave., Moscow, GSP-1, 119991, Russia;(2) Institute of Atomic and Molecular Physics, National Academy of Sciences of Belarus, Minsk, Belarus |
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| Abstract: | At 4.2 K, the quasiline fluorescence and fluorescence-excitation spectra (in the region of the S
1  S
0- and S
2 S
0 transitions) of bisanthene in n-hexane have been obtained. Using the MO/M8ST method, the calculation of the A
g
normal modes in the S
0, S
1, and S
2 electronic states was carried out for the bisanthene molecule; the relative intensities of the transitions in the corresponding vibronic spectra were also calculated. The analysis of the results of calculations and experiment made it possible to draw conclusions on the form of the modes for a number of normal vibrations which are active in the bisanthene vibronic spectra. |
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| Keywords: | bisanthene quasi-line spectra of fluorescence and absorption normal-mode analysis intensity of vibronic transitions form of modes |
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