Emission spectroscopy of photodissociating CH/sub 3/I and CD/sub 3/I

Journal Article · Thu Oct 09 04:00:00 EDT 1986 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100412a026· OSTI ID:5108116

Hale, M O; Galica, G E; Glogover, S G; Kinsey, J L

Emission spectra from photodissociating CH/sub 3/I and CD/sub 3/I are recorded following excitation with 266-nm light. The emission wavelengths and relative intensities to the ground vibrational states are tabulated. A time-dependent formalism is used to interpret the data in terms of vibrational wave functions of the ground electronic state of methyl iodide and the dynamics of photodissociation on an electronic excited state. The observed intensities in the CD/sub 3/I spectra are perturbed by a Fermi resonance between two quanta of C-I stretch and one quantum of umbrella bend. Both CH/sub 3/I and CD/sub 3/I photodissociate with initial motion in the C-I stretching coordinate and subsequent motion in the umbrella coordinate to form the planar CH/sub 3//CD/sub 3/ products. The qualitative mechanisms described here are consistent with a more detailed theoretical treatment presented in the following paper.

• Research Organization: Massachusetts Institute of Technology, Cambridge
• OSTI ID: 5108116
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 90:21; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
400500* -- Photochemistry
CHEMICAL REACTIONS
DATA
DECOMPOSITION
DEUTERIUM COMPOUNDS
EMISSION SPECTROSCOPY
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
IODINATED ALIPHATIC HYDROCARBONS
ISOTOPE EFFECTS
METHYL IODIDE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC IODINE COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
SPECTROSCOPY