Ultraviolet absorption determination of intramolecular predissociation dynamics in (CH/sub 3/I)/sub 2/ and (CD/sub 3/I)/sub 2/

Journal Article · Thu Mar 10 04:00:00 EST 1988 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100316a039· OSTI ID:7005027

Donaldson, D J; Vaida, V; Naaman, R

The authors report the ultraviolet absorption spectra of jet-cooled CH/sub 3/I and CD/sub 3/I in the Rydberg B and C states. The monomer spectrum of each consists of a single, short progression in the v/sub 2/ (CH/sub 3/ umbrella) mode. Dimer formation results in significant changes in the relative intensities of the member of this progression as well as the appearance of new spectral features. These features are associated with the vibrational modes of methyl iodide which are most strongly coupled to the predissociative surface crossing. From these measurements they develop a mode for the effect of dimerization on the predissociation and quantify the energy and the shape of the surface crossing.

• Research Organization: Univ. of Colorado, Boulder (USA)
• OSTI ID: 7005027
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 92:5; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTROSCOPY
CHEMICAL REACTIONS
DEUTERIUM COMPOUNDS
DIMERIZATION
DISSOCIATION
ELECTRONIC STRUCTURE
ENERGY LEVELS
EXCITED STATES
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN COMPOUNDS
IODINATED ALIPHATIC HYDROCARBONS
JETS
METHYL IODIDE
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC IODINE COMPOUNDS
POLYMERIZATION
PREDISSOCIATION
RYDBERG STATES
SPECTRA
SPECTROSCOPY
ULTRAVIOLET SPECTRA
VIBRATIONAL STATES