𝔖 Bobbio Scriptorium
✦   LIBER   ✦

On the origin of a low-lying forbidden transition in polyenes and related molecules

✍ Scribed by K. Schulten; M. Karplus


Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
506 KB
Volume
14
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

✦ Synopsis


It is demonstrated that the inclusion of double-excited configurations in semi-cmpiricclf and B priuri calculations of polycnes leads to a significant alteration of the spectrum. In areement with the recent experiment of Hudson and liohlor, a forbidden ('A,) state appears below the strongly allmved ('I3,) state.


πŸ“œ SIMILAR VOLUMES


Spectroscopic investigation on the effec
✍ Krishnagopal Mandal; T.N. Misra πŸ“‚ Article πŸ“… 1974 πŸ› Elsevier Science 🌐 English βš– 382 KB

Optical absorption spectra of a few polyenes in the crystalline state have been studied. On adsorption of certain gases on the crystallite surfaces of polyenes. a new band appears on the low energy side of the long wavelength bands of these polyenes. The position of this band is 536,537 and 375 m,u

On the origin of three-body potentials i
✍ A. Beyer; A. Karpfen; P. Schuster πŸ“‚ Article πŸ“… 1979 πŸ› Elsevier Science 🌐 English βš– 328 KB

SCF-energy partitioning for three ternary intermolecular complexes, (HF)3, Li\*(OH2)2 and F-(H2 0)2, has been performed in order to obtain more information on the nature of the non-additivities in the energies of complexes. It is found that polarization forces dominate the three-body energies in the

The effect of a reversed ileal segment a
✍ N. S. Williams; R. F. G. J. King πŸ“‚ Article πŸ“… 1985 πŸ› John Wiley and Sons 🌐 English βš– 743 KB

Abstract The main problem facing patients with ulcerative colitis after mucosal proctectomy and ileo-anal anastomosis (MP + IAA) is severe frequency of bowel action. Although the addition of a pelvic reservoir can improve matters, some patients still complain of this problem. In an attempt to slow t

On a possible invariance of a transition
✍ R. CΓ‘rdenas; J. AndrΓ©s; J. Krechl; M. Campillo; O. Tapia πŸ“‚ Article πŸ“… 1996 πŸ› John Wiley and Sons 🌐 English βš– 1020 KB

The influence of a hydroxyl group simulating Ser-48 in the hydride-transfer step characteristic of liver alcohol dehydrogenase is studied on the hydride-transfer reaction as modeled by a methanolate anion interacting with a cyclo propenyl cation. It is shown first that this is an adequate model by c