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The photoelectron spectrum of trans-15, 16-dimethyl-dihydropyrene

✍ Scribed by V. Boekelheide; J.N. Murrell; W. Schmidt

Book ID
104236447
Publisher
Elsevier Science
Year
1972
Tongue
French
Weight
274 KB
Volume
13
Category
Article
ISSN
0040-4039

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✦ Synopsis

Since its original synthesis' trans-15,16-dimethyldihydropyrene (l), a bridged 14-annulene, and its derivatives have attracted much attention, of particular interest being their unusual magnetic properties2, UV spectral and their facile photochemical and thermal rearrangement4 to the corresponding 8,16-dimethyl-[2.2]metacyclophane-

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Die Valenzisomerisierung des trans-15, 1
Die Valenzisomerisierung des trans-15, 16-Dimethyl-dihydropyrens - ein beitrag zur frage nach der aktivierungsenergie symmetrie-verbotener prozesse. Vorläufige mitteilung
✍ W. Schmidt 📂 Article 📅 1971 🏛 John Wiley and Sons 🌐 German ⚖ 418 KB 👁 1 views

## Abstract Concerted electrocyclic processes which are forbidden according to the symmetry conservation rules of __Woodward & Hoffmann__, may nevertheless take place at low activation energies. The necessary conditions are exemplified by the unique case of the __trans__‐15, 16‐dimethyl‐dihydropyre