Spectroscopic detection of ozone-olefin charge-transfer complexes in cryogenic matrices

Journal Article · Thu Jun 28 04:00:00 EDT 1990 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100376a010· OSTI ID:6379204

Singmaster, K A ^[1]; Pimentel, G C ^[2]

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1. San Jose State Univ., CA (USA)
2. Univ of California, Berkeley (USA)

When ozone-olefin mixtures are codeposited in argon or krypton matrices, broad intense visible-UV absorptions appear that are clearly due to the long-sought ozone-olefin charge-transfer (C-T) complexes. With olefins tetramethylethylene, trimethylethylene, cis- and trans-2-butene, isobutylene, and propene, the maximum absorptions appear, respectively, at 500, 388, 400, 407, 388, and 345 nm. As is usual for C-T absorptions, these wavelengths provide values of {upsilon}{sub max}(C-T) that correlate with the olefin ionization potentials. As the matrix temperature is raised, ozonolysis begins; kinetic measurements give activation energies of 1.0 {plus minus} 0.4 kcal/mol for the krypton matrix reaction between ozone and cis- or trans-2-butene.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6379204
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:13; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKENES
ARGON
CHARGE TRANSPORT
CHEMICAL ANALYSIS
CRYOGENICS
DATA
DATA ANALYSIS
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
GASES
HYDROCARBONS
INFORMATION
KRYPTON
MEASURING INSTRUMENTS
MEASURING METHODS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OZONE
RARE GASES