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Direkter Nachweis von Diphenylnitrilimin bei der Photolyse von 2,5-Diphenyltetrazol


Meier, Hansruedi; Heinzelmann, Willy; Heimgartner, Heinz (1980). Direkter Nachweis von Diphenylnitrilimin bei der Photolyse von 2,5-Diphenyltetrazol. CHIMIA International Journal for Chemistry, 34(12):504-506.

Abstract

Direct detection of diphenylnitrilimine in the photolysis of 2,5-diphenyltetrazole
Irradiation of 2,5-diphenyltetrazole (2a) in an ether/pentane/ethanol glass at 77 K with UV-light of wavelength 280 or 290 nm yields diphenylnitrilimine (1b) by extrusion of N2. The UV-spectrum of this 1,3-dipolar intermediate is shown in fig. 1. Between 160 and 175 K, 1b undergoes a dimerization to give 1,2-bis(phenylazo)-1,2-diphenyl-ethylene (15). 2,4,5-Triphenyl-1,2,3-triazole (16), the main product of the photolysis of 2a at room temperature, is not formed on heating the solution of 15 to 300 K.

Abstract

Direct detection of diphenylnitrilimine in the photolysis of 2,5-diphenyltetrazole
Irradiation of 2,5-diphenyltetrazole (2a) in an ether/pentane/ethanol glass at 77 K with UV-light of wavelength 280 or 290 nm yields diphenylnitrilimine (1b) by extrusion of N2. The UV-spectrum of this 1,3-dipolar intermediate is shown in fig. 1. Between 160 and 175 K, 1b undergoes a dimerization to give 1,2-bis(phenylazo)-1,2-diphenyl-ethylene (15). 2,4,5-Triphenyl-1,2,3-triazole (16), the main product of the photolysis of 2a at room temperature, is not formed on heating the solution of 15 to 300 K.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Language:German
Date:1980
Deposited On:29 Jul 2014 11:06
Last Modified:05 Apr 2016 17:59
Publisher:Swiss Chemical Society
ISSN:0009-4293
Funders:Swiss National Science Foundation
Official URL:https://chimia.ch/index.php?lang=en

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