Algebraic techniques similar to those introduced recently to describe rotation-vibration spectra of molecules may be useful also in the treatment of electronic configurations. A general algebraic framework for this treatment is discussed and a simple example is worked out in detail.
Method of calculating band shape for molecular electronic spectra
โ Scribed by Pearl, Greg M.; Zerner, M. C.; Broo, Anders; McKelvey, John
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 566 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0192-8651
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โฆ Synopsis
A method for approximating the band shape of molecular electronic transitions based on a single geometric configuration is described. The band shape is modeled using an empirical parameter to estimate the width at half-height for each transition. In addition to generating a shape for allowed transitions, a procedure is developed for approximating the oscillator strength for the symmetry forbidden bands. The results obtained using these two approximations are then compared with experimental spectra and to the results obtained from stochastic methods for simple organic molecules, such as benzene, naphthalene, and the diazobenzenes.
๐ SIMILAR VOLUMES
A consistent use of the spectral representation is made to develop an effective Hamiltonian for molecular calculations in which only active electrons are dealt with, keeping other electrons frozen. The effective Hamiltonian is prepared without invoking any parameter fitting and adjusting procedures.