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Titolo:
Infrared absorption spectroscopic studies of alpha,omega-diphenylpolyenyl anions with odd numbered polyene molecules
Autore:
Kim, JY; Kim, ER; Sohn, D; Sakamoto, A; Tasumi, M;
Indirizzi:
Hanyang Univ, Coll Nat Sci, Dept Chem, Seoul 133791, South Korea Hanyang Univ Seoul South Korea 133791 pt Chem, Seoul 133791, South Korea Saitama Univ, Fac Sci, Dept Chem, Urawa, Saitama 338, Japan Saitama Univ Urawa Saitama Japan 338 Dept Chem, Urawa, Saitama 338, Japan
Titolo Testata:
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
fascicolo: 8, volume: 22, anno: 2001,
pagine: 833 - 836
SICI:
0253-2964(20010820)22:8<833:IASSOA>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
POLYACETYLENE; SOLITONS; INTENSITIES; SPECTRUM; CHARGES; BOND;
Keywords:
soliton; alpha,omega-diphenylpolyenyl aminos; infrared spectroscopy;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Kim, JY Hanyang Univ, Coll Nat Sci, Dept Chem, Seoul 133791, South Korea Hanyang Univ Seoul South Korea 133791 Seoul 133791, South Korea
Citazione:
J.Y. Kim et al., "Infrared absorption spectroscopic studies of alpha,omega-diphenylpolyenyl anions with odd numbered polyene molecules", B KOR CHEM, 22(8), 2001, pp. 833-836

Abstract

Infrared absorption spectra of alpha,omega -diphenylpolyenyl anions Ph(CH)(n)Ph- (DPn-, n=7, 9, and 13) in the tetrahydrofuran-d(6) solutions was measured in the range of 1700 and 1200 cm(-1). The infrared spectra obtained from anions (DPn) showed considerable difference from their neutral species (DPn); their intensities were enhanced at least two orders of magnitude stronger than their neutral species. The in-plane CH bending modes at 1464 and1375 cm(-1) are correspondingly strengthened with the chain length increased, but the C=C stretching at 1541 cm(-1) is weakened and frequencies are not changed. We provide an IR evidence for the first time that the bond order or bond alternations of the anions (soliton) are different from those of radical anions (polaron) as well as neutral species.

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Documento generato il 20/09/20 alle ore 00:21:09