Near-infrared-light-induced reaction of singlet SO with allene and dimethylacetylene in a rare gas matrix. Infrared spectra of two novel episulfoxides

Journal Article · Thu Feb 23 00:00:00 EST 1989 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100341a023· OSTI ID:5143410

Salama, F; Frie, H ^[1]

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1. Lawrence Berkeley Lab., CA (USA)

SO{center dot}allene and SO{center dot}dimethylacetylene pairs were prepared in solid Ar at 12 K in order to explore near-infrared-light-induced chemistry of SO(a{sup 1}{Delta}) (T{sub 00} = 5860 cm{sup {minus}1}) and SO(b{sup 1}{Sigma}{sup +}) (T{sub 00} = 10470 cm{sup {minus}1}). Sulfur monoxide was generated by pyrolysis of ethylene episulfoxide in the matrix gas deposition line. Fundamental absorptions of SO(X{sup 3}{Sigma}{sup {minus}}) were measured at 1138.7 cm{sup {minus}1} (Ar), 1134.8 cm{sup {minus}1} (Kr), and 1129.5 cm{sup {minus}1} (Xe). Selective excitation of SO({sup 1}{Delta}) and SO({sup 1}{Sigma}{sup +}) vibronic levels with CW dye laser or filtered tungsten source light led to chemical reaction, the first ever observed of singlet SO. Product analysis by FT-infrared spectroscopy revealed two novel three-membered ring molecules, allene episulfoxide and dimethylacetylene episulfoxide. The SO {sup 1}{Sigma}{sup +}, 1 {l arrow} {sup 3}{Sigma}{sup {minus}}, O vibronic transition was recorded by laser reaction excitation spectroscopy, and an absorption peak was found at 11 420 cm{sup {minus}1} (Ar).

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5143410
• Journal Information: Journal of Physical Chemistry; (USA), Vol. 93:4; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ACETYLENE
PHOTOCHEMICAL REACTIONS
ALLENE
SULFUR OXIDES
ABSORPTION SPECTROSCOPY
DYE LASERS
EXPERIMENTAL DATA
INFRARED SPECTRA
MATRIX ISOLATION
NEAR INFRARED RADIATION
ROTATIONAL STATES
VERY LOW TEMPERATURE
VIBRATIONAL STATES
ALKYNES
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
DIENES
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
EXCITED STATES
HYDROCARBONS
INFORMATION
INFRARED RADIATION
LASERS
LIQUID LASERS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLYENES
RADIATIONS
SPECTRA
SPECTROSCOPY
SULFUR COMPOUNDS
400500* - Photochemistry