Benzylchlorocarbene: UV Absorption Spectrum, Kinetics for 1,2-H Migration and Mechanism for Reaction With Acetic Acid as Determined by Combined Continuous and Laser-Flash Photolysis | Zendy

Roland Bonneau | Zendy; M. T. H. LIU | Zendy; Ramesh Subramanian | Zendy; B. Linkletter | Zendy; I. D. R. Stevens | Zendy

Open Access

Benzylchlorocarbene: UV Absorption Spectrum, Kinetics for 1,2-H Migration and Mechanism for Reaction With Acetic Acid as Determined by Combined Continuous and Laser-Flash Photolysis

Author(s) -

Roland Bonneau,

M. T. H. LIU,

Ramesh Subramanian,

B. Linkletter,

I. D. R. Stevens

Publication year - 1989

Publication title -

laser chemistry

Language(s) - English

Resource type - Journals

eISSN - 1026-8014

pISSN - 0278-6273

DOI - 10.1155/1990/62819

Subject(s) - flash photolysis , chemistry , acetic acid , photochemistry , kinetics , reaction rate constant , carbene , quenching (fluorescence) , absorption (acoustics) , photodissociation , absorption spectroscopy , irradiation , laser , kinetic energy , analytical chemistry (journal) , fluorescence , organic chemistry , catalysis , optics , physics , quantum mechanics , nuclear physics

The UV absorption spectrum of benzylchlorocarbene, generated by laser flash photolysis of 3-chloro-3-benzyldiazirine, has been observed in the 290-330 nm range. The lifetime of this species, 18 ns at 25°C, isdetermined by the rate of the 1,2-H migration to produce chlorostyrenes. Quenching rate constants of thiscarbene by acetic acid and tetramethylethylene have been measured. Comparison of this kinetic data withthe quantitative analysis of the products obtained under continuous irradiation gives further insight intothe mechanisms of carbene-acetic acid reactions.

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