Observation of coordinatively unsaturated intermediates following the pulsed UV photolysis of Fe(CO)/sub 5/
Following photolysis of a mixture of 30 x 10/sup -3/ torr of iron pentacarbonyl (Fe(CO/sub 5/)), and 100 torr of CO, a transient absorption spectrum generated shows 4 spectral features. At these CO pressures, the initially generated iron carbonyls, Fe(CO)/sub 2/ and Fe(CO)/sub 3/ react rapidly with the excess of CO to generate Fe(CO)/sub 4/, which reacts more slowly with CO to regenerate Fe(CO)/sub 5/. The kinetics of these reactions will be the subject of another publication. Even with a 3000 fold excess of CO all initially photolyzed Fe(CO)/sub 5/ is not regenerated, implying that the formation of the polynuclear metal species is very rapid and efficient. The splitting of the Fe(CO)/sub 4/ spectral feature is significant in that very similar splitting is observed in the matrix. 3 figures.
- Research Organization:
- Northwestern Univ., Evanston, IL
- OSTI ID:
- 5862758
- Journal Information:
- J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 105:10; ISSN JACSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400104 -- Spectral Procedures-- (-1987)
400201* -- Chemical & Physicochemical Properties
400500 -- Photochemistry
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CARBONYLS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
DATA
ELECTROMAGNETIC RADIATION
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXPERIMENTAL DATA
FLUIDS
GASES
INFORMATION
INFRARED SPECTRA
IONIZATION
IRON COMPOUNDS
KINETICS
LASER RADIATION
LOW PRESSURE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHOTOIONIZATION
PRESSURE DEPENDENCE
PULSE TECHNIQUES
RADIATIONS
REACTION INTERMEDIATES
REACTION KINETICS
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
TRANSITION ELEMENT COMPOUNDS
ULTRAVIOLET RADIATION