✦ LIBER ✦

Electronic spectral shifts of large van der Waals molecules

✍ Scribed by John C. Kettley; T.Frank Palmer; John P. Simons; A.Terry Amos

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 532 KB
Volume: 126
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(86)85125-9

No coin nor oath required. For personal study only.

✦ Synopsis

Experimental values for the red spectral shifts in the fluorescence excitation spectra of large van der Waals complexes of aromatic molecules and rare gas atoms have been used, in conjunction with calculated equilibrium distances between the aromatic and rare gas atom, to estimate differences between the dispersion forces in the ground and excited states. Theoretical red-shifts calculated by a formalism given by Longuet-Higgins and Pople are an order of magnitude too large and this discrepancy is traced to incorrect assumptions concerning values chosen for average excitation energies. Modifications of the theory for a van der Waals complex are explored. A simpler and more easily used formula to correlate the magnitudes of the spectral shifts is derived and tested.

📜 SIMILAR VOLUMES

Microscopic solvent shifts in the electr

Microscopic solvent shifts in the electronic spectra of large van der waals molecules

✍ Samuel Leutwyler 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 508 KB

The experimental red-shifts of the electronic origins of a number of law non-polar \nan der Waals molecules are reported. A comparison with the theoretical red-shifts calculated by 3 form&m given by Lonpuet-H&ins and Poplc yields a good correlation, reflecting the dominant role of dispersion interac

Solvent shifts in van der waals complexe

Solvent shifts in van der waals complexes of perylene

✍ John C. Ketteley; Jeffrey W. Oram; T.Frank Palmer; John P. Simons; A.Terry Amos 📂 Article 📅 1987 🏛 Elsevier Science 🌐 English ⚖ 584 KB

The solvation and structure of vdW complexes formed in supersonic free-jet expansions of perylene with rare gas atoms and organic "solvent" molecules, using helium as carrier gas, have been investigated. The complexes were probed and analysed by combining laser-induced fluorescence spectroscopy with

Model for vibrational predissociation of

Model for vibrational predissociation of van der Waals molecules

✍ J.A. Beswick; Joshua Jortner 📂 Article 📅 1977 🏛 Elsevier Science 🌐 English ⚖ 605 KB

We advance a theoretical model for wbrational predissociation (VP) of a linear triatomic molecular comple\ consistmg of a rare-gas atom bound to a diatomic, which rests on the decay of a bound state into a mnnïfold of coupled translational continua. We explored the dependence of the VP :ate on the m

Curves of growth for van der Waals broad

Curves of growth for van der Waals broadened spectral lines

✍ Chul Park 📂 Article 📅 1980 🏛 Elsevier Science 🌐 English ⚖ 252 KB

Vibrational and thermodynamic properties

Vibrational and thermodynamic properties of ArHX van der waals molecules

✍ Hyung Kyu Shin 📂 Article 📅 1977 🏛 Elsevier Science 🌐 English ⚖ 321 KB

Vibrational energy levels for the van der Waals bond of argon-hydrogen halide (Ar.. .XH) molecules are calculated by use of the WKB method with available potential parameters for the Lennard-Jones (12-6) function. The numbers of vrbrational energy levels are 7, 10,12, and 14 for ArHF, ArHCl, ArHSr a

The electronic spectra of argon-tetracen

The electronic spectra of argon-tetracene van der waals complexes

✍ Ian Raitt; Anne M. Griffiths; Philip A. Freedman 📂 Article 📅 1981 🏛 Elsevier Science 🌐 English ⚖ 370 KB

A simple relatronship is shown to occur between spectral line position and the number of bound argon atoms in the electronic spectrum of argon-tetracene van der Waals molecules, in contrast to the conclusion of other workers. We show that bondmg information may be obtained from such spectra