✦ LIBER ✦

A two-intermediate model for imidazole-promoted peroxyoxalate chemiluminescence

✍ Scribed by Neuvonen, Helmi

Publisher: John Wiley and Sons
Year: 1997
Weight: 83 KB
Volume: 12
Category: Article
ISSN: 0884-3996
DOI: 10.1002/(sici)1099-1271(199709/10)12:5<241::aid-bio449>3.0.co;2-3

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✦ Synopsis

A mechanism is proposed for imidazole-catalysed peroxyoxalate chemiluminescence. The reaction model includes a sequential formation of 1-aroxalylimidazole and 1,1'-oxalyldiimidazole as light-producing reaction intermediates. The suggestion is supported by the kinetic data obtained for the reaction of imidazole with bis(4-nitrophenyl) oxalate and on the recently reported ability of 1,1'-oxalyldiimidazole to function as an efficient chemiluminescence reagent. The relative contributions of different catalytic pathways and hydrolytic side-reactions are discussed.

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