Laser flash photolysis studies of the reactions of some 1,4-biradicals

Journal Article · Sun Aug 01 04:00:00 EDT 1982 · Acc. Chem. Res.; (United States)

DOI:https://doi.org/10.1021/ar00080a004· OSTI ID:6770768

Scaiano, J C

The technique of laser flash photolysis and equipment required for using the technique are briefly described. The possibilities, use, and limitations of the laser photolysis technique to studies in the area of biradical reactions are discussed. The biradicals discussed were generated as intermediates in the Norrish type II reactions and the photoenolization of o-alkyl-substituted carbonyl compounds. Values for representative lifetimes for biradicals derived from these reactions are tabulated. Hydrogen abstraction studies were carried out with molecules with very labile hydrogen atoms, and values for rate constants for these reactions are tabulated. The interaction of biradicals with paramagnetic species such as oxygen, nitroxides, and copper(II) complexes were studied by the laser technique, and the reactions show characteristic behavior that reflects the operation of spin selection rules and the importance of intersystem crossing processes in biradical chemistry. (BLM)

• Research Organization: National Research Council, Ottawa, Ontario
• OSTI ID: 6770768
• Journal Information: Acc. Chem. Res.; (United States), Journal Name: Acc. Chem. Res.; (United States) Vol. 15:8; ISSN ACHRE
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ALCOHOLS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMPLEXES
COPPER COMPLEXES
DECOMPOSITION
ELECTROMAGNETIC RADIATION
ELEMENTS
ENOLS
HYDROXY COMPOUNDS
KINETICS
LASER RADIATION
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
RADIATIONS
RADICALS
REACTION KINETICS
TRANSITION ELEMENT COMPLEXES