𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Ab initio effective valence shell hamiltonian calculation of the valence state potential curves of CH and CH+

✍ Scribed by Hosung Sun; Karl F. Freed


Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
770 KB
Volume
78
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

✦ Synopsis


The third-order ab initio effective valence shell hamiltonran of quasi-degenerate many-body perturbation theory is calculated for the vaience state potential curves of CH and CH" simultaneously. The results are in accord with experiment and configuration interaction calculations, and they have applicatxons to experunents on the D ?IT state of CA and B 'A of CH+.


πŸ“œ SIMILAR VOLUMES


Ab initio effective Hamiltonian calculat
✍ Jong Keun Park; Hosung Sun πŸ“‚ Article πŸ“… 1992 πŸ› Elsevier Science 🌐 English βš– 399 KB

The second-order ab initio effective valence shell Hamiltonian of quasi-degenerate many-body perturbation theory has been used to determine the valence state potential energy curves of SH and SH +. The calculated spectroscopic constants of various valence states are in good agreement with those of e

Ab initio calculation of the effective v
✍ Danny L. Yeager; Hosung Sun; Karl F. Freed; Michael F. Herman πŸ“‚ Article πŸ“… 1978 πŸ› Elsevier Science 🌐 English βš– 558 KB

7he n = 2 effecthe valence shell hamiltonian, %", of carbon is evahated through second order using 3P Hartree-Fock orbit&s (5s4p) with added d functions to provide resuIts within a few percent of the spd convergence limits. The c&u-I&xl%?' is employed to evaluate then = 2 valence states of C, C, C'.

Dipole moment functions of NH and NH+ by
✍ Jong Keun Park; Hosung Sun πŸ“‚ Article πŸ“… 1993 πŸ› Elsevier Science 🌐 English βš– 615 KB

The ab initio effective valence shell Hamiltonian (H') method has been extended to calculate molecular properties of valence states as well as energies. Both the effective Hamiltonian and effective molecular property operator are perturbatively expanded in powers of correlation, and contain contribu

Dipole and transition moments of SiH, PH
✍ Jong Keun Park; Hosung Sun πŸ“‚ Article πŸ“… 1992 πŸ› Elsevier Science 🌐 English βš– 483 KB

The ab initio effective valence shell Hamiltonian method, based on quasi-degenerate many-body perturbation theory, is generalized to calculate molecular properties as well as the valence state energies. The procedure requires the evaluation of effective operators for each molecular property. Effecti

The valence isomers of (CH)8 and (SiH)8:
✍ Uwe Versteeg; Wolfram Koch πŸ“‚ Article πŸ“… 1994 πŸ› John Wiley and Sons 🌐 English βš– 902 KB

The 22 possible valence isomers of the (CH), and (SiH), systems have been studied by ab initio molecular orbital calculations at the MP2/6-31G\*//6-31G\* + ZPE level. Optimized geometries, relative energies, and, for some selected compounds, vibrational frequencies are reported. The systematic diffe

Potential energy curves for ground and e
✍ I. Schmidt-Mink; W. MΓΌller; W. Meyer πŸ“‚ Article πŸ“… 1984 πŸ› Elsevier Science 🌐 English βš– 693 KB

Sixteen low-lying electronx states of NaLi arc investigated by SCF/~alence CI calculations including core polarization effects by means of an effective potential. Spectroscopic constants arc obtained with estimated uncertainties of AR, G 0.01 A, awe E 0.6 cm-' and nD, < 80 cm-' \_ f-rom a comparison