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- W2019977116 abstract "Die Synthese phenylsubstituierter, zum Teil deuterierter Abkommlinge des Anthracens, des Naphthalins, des Benzo[b]triphenylens und des Benzo[k]fluoranthens wird beschrieben. Mit Hilfe von ESR-, ENDOR- und TRIPLE-Experimenten werden die Hyperfeinkopplungskonstanten der korrespondierenden Radikalanionen einschlieslich ihrer relativen Vorzeichen bestimmt und den jeweiligen Molekulpositionen zugeordnet. Fur einige der untersuchten Systeme wird gezeigt, das in der Spindichteverteilung der Phenylsubstituenten verdrillungsbedingte Abweichungen von der konventionellen Sequenz |H|≥ |Ha| > |H| auftreten, die mit einer Phenylhyperkonjugation gedeutet werden konnen.Syntheses ESR, and ENDOR Studies of Highly Twisted Phenyl Substituted Radical AnionsThe synthesis of a variety of phenyl substituted and partially deuterated derivatives of anthracene. naphthalene benzo[b]triphenylene, and benzo[k]fluoranthene is given. By performing ESR, ENDOR, and TRIPLE experiments the hyperfine coupling constants, including their signs, of the respective radical anions are determined. Regarding the spin distributions within the phenyl substituents it is shown that the conventional sequence of the hyperfine couplings |H|≥ |Ha| > |H| is not always valid. These results are interpreted in terms of a significant π-σ-mixing, i. e. a phenyl hyperconjugation effect." @default.
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- W2019977116 date "1981-01-01" @default.
- W2019977116 modified "2023-09-27" @default.
- W2019977116 title "Synthesen, ESR- und ENDOR-Untersuchungen hochverdrillter phenylsubstituierter Radikalanionen" @default.
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- W2019977116 doi "https://doi.org/10.1002/cber.19811140128" @default.
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