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ESR.‐Spektren der Radikal‐Ionen alkylsubstituierter nicht‐alternierender Kohlenwasserstoffe
Author(s) -
Gerson F.,
Heinzer J.
Publication year - 1967
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19670500720
Subject(s) - chemistry , alkyl , ion , coupling constant , medicinal chemistry , computational chemistry , organic chemistry , particle physics , physics
ESR.‐spectra of the radical‐anions and the radical‐cations derived from two alkyl‐substituted, non‐alternant hydrocarbons, acepleiadiene (APH 2 ) and 3,5,8,10‐tetramethyl‐cyclopenta[ef]heptalene (TMCP) have been recorded and analysed. The large differences in the total widths of the spectra of the corresponding ions (APH 2 ⊖: 32; APH 2 ⊕: 57; TMCP⊖: 69 and TMCP⊕: 36 Gauss) are well accounted for by the simple HMO model. The excellent agreement between the experimental and the theoretical values allows one to make a reliable assignment of the coupling constants to sets containing equal numbers of equivalent protons.