Meso-ionic fulvalene; synthesis and properties of anhydro-5-cyclopentadienyl-1,3-diphenyl-1,2,3,4-tetrazolium hydroxide
β Scribed by Araki, Shuki; Butsugan, Yasuo
- Book ID
- 120996878
- Publisher
- The Royal Society of Chemistry
- Year
- 1983
- Tongue
- English
- Weight
- 142 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0022-4936
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## Abstract ^13^C, ^14^N and ^15^N NMR data are reported for some mesoionic 2,3βdiphenyltetrazoles with nitrogenβcontaining exocyclic groups, and the data confirm their cyclic structures. The protonated forms of these mesoionic structures contain hydrogen atoms at the exocyclic groups.
Acyl chlorides are split into acyl and chlorine radicals by light of wavelength 254 my. Since the dissociation energy of the chlorine-hydrogen bond is considerably larger than that of the acyl-hydrogen bond, substitution of the substrate by acyl radicals is observed on irradiation of acid chlorides.