AB initio study of the low-lying excited states of cyclopropene by the equations-of-motion method
β Scribed by G. Fronzoni; V. Galasso
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 347 KB
- Volume
- 133
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
β¦ Synopsis
The lowest singlet and triplet excited states of cyclopropene have been investigated with the equations-of-motion method. The first spectral band is due to a singlet transition arising from x -+3s,3p excitations. The other two band systems are associated with clusters of transitions predominantly of Rydberg nature or strong admixtures of valence-valence and valence-Rydberg excitations. The first triplet transition is mainly of II: +lc* character.
π SIMILAR VOLUMES
The equilibrium geometries, excitation energies, force constants, and vibrational frequencies of the low-lying electronic states X2B1, 2A1, 2B2, and 2A2 of the PF2 radical have been calculated at the MRSDCI level with a double zeta plus polarization basis set. Our calculated geometry, force constant
The equilibrium geometries, excitation energies, force constants and vibrational frequencies for the low-lying electronic states X %-, a 'A, A 3n and 1 'II of the CCS molecule have been calculated at the MRSDCI level with a double-zeta plus polarization basis set. Our optimized geometric parameters
Ab initio molecular-orbital calculations have been carried out on the low-lying triplet and singlet electronic states of the H&N+ cation, at the SCF and Moller-Plesset levels of theory. Both triplet 'AZ and 3BZ electronic states have similar energies. The barriers to isomerization to the 'A" and 'A'
A theoretical study has been performed on the five lowest excited states of the ozone molecule using multiconfigurational second-order perturbation theory (CASPT2). The predicted order of states is: 3A 2 (T O = 1.15 eV), 3B 2 (T O = 1.33 eV), 3B 1 (T O ---1.33 eV), 1A 2 (T O = 1.44 eV) and 1B 1 (T O