Abstract
Rate constants for quenching of oxalyl fluoride ( 3 A u) molecules by selected classes of quenchers have been investigated using the technique of laser-induced time-resolved phosphorescence. Various inorganic, alkane, halogenated alkane, alkene, halogenated alkene, diene and alkyne quenchers were studied. NO was found to have a much larger quenching rate constant than O 2 (6.8 × 10 10 and 1.4 × 10 8 l mol −1 s −1 respectively). The alkane data are consistent with a hydrogen atom abstraction mechanism. Both alkene and halogenated alkene rate constants were found to increase as the triplet energy of the particular quencher decreased. Similar correlations of rate constants and triplet energy levels were found for the diene and alkyne compounds studied. The phosphorescence emission spectrum was recorded and the 3 A u state of oxalyl fluoride was found to lie at 85.6 kcal mol −1. A single progression in the ground state ν 1 (CO symmetric stretch) is the dominant feature of the spectrum.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
