Abstract
The electronic absorption and Raman spectra of the radical anion and dianion of 19,19′,20,20′-tetranor-β,β-carotene, a polyene molecule with eleven conjugated C=C bonds, have been studied. The radical anion has an intense absorption at 1.46 eV and a weak absorption at 1.00 eV, while the dianion has an intense absorption at 1.59 eV. The C=C stretching (v1) band of the radical anion is 26 cm-1 lower, whereas the v1 band of the dianion is 15 cm-1 higher, than that of the neutral species. This upshift observed for the dianion suggests large structural changes such as inversion of bond alternation. The CH in-plane-bending (v2) bands of the radical anion and the dianion, both observed at 1275 cm-1, are 15 cm-1 lower than that of the neutral species and may be used as a marker of negatively charged polyenes.
| Original language | English |
|---|---|
| Pages (from-to) | 418-422 |
| Number of pages | 5 |
| Journal | Chemical Physics Letters |
| Volume | 276 |
| Issue number | 5-6 |
| Publication status | Published - 1997 Sep 26 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Spectroscopy
- Atomic and Molecular Physics, and Optics
Cite this
Electronic absorption and Raman studies of the radical anion and dianion of a polyene molecule (19,19′,20,20′-tetranor-β,β-carotene). / Kim, Jin Yeol; Furukawa, Yukio; Tasumi, Mitsuo.
In: Chemical Physics Letters, Vol. 276, No. 5-6, 26.09.1997, p. 418-422.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Electronic absorption and Raman studies of the radical anion and dianion of a polyene molecule (19,19′,20,20′-tetranor-β,β-carotene)
AU - Kim, Jin Yeol
AU - Furukawa, Yukio
AU - Tasumi, Mitsuo
PY - 1997/9/26
Y1 - 1997/9/26
N2 - The electronic absorption and Raman spectra of the radical anion and dianion of 19,19′,20,20′-tetranor-β,β-carotene, a polyene molecule with eleven conjugated C=C bonds, have been studied. The radical anion has an intense absorption at 1.46 eV and a weak absorption at 1.00 eV, while the dianion has an intense absorption at 1.59 eV. The C=C stretching (v1) band of the radical anion is 26 cm-1 lower, whereas the v1 band of the dianion is 15 cm-1 higher, than that of the neutral species. This upshift observed for the dianion suggests large structural changes such as inversion of bond alternation. The CH in-plane-bending (v2) bands of the radical anion and the dianion, both observed at 1275 cm-1, are 15 cm-1 lower than that of the neutral species and may be used as a marker of negatively charged polyenes.
AB - The electronic absorption and Raman spectra of the radical anion and dianion of 19,19′,20,20′-tetranor-β,β-carotene, a polyene molecule with eleven conjugated C=C bonds, have been studied. The radical anion has an intense absorption at 1.46 eV and a weak absorption at 1.00 eV, while the dianion has an intense absorption at 1.59 eV. The C=C stretching (v1) band of the radical anion is 26 cm-1 lower, whereas the v1 band of the dianion is 15 cm-1 higher, than that of the neutral species. This upshift observed for the dianion suggests large structural changes such as inversion of bond alternation. The CH in-plane-bending (v2) bands of the radical anion and the dianion, both observed at 1275 cm-1, are 15 cm-1 lower than that of the neutral species and may be used as a marker of negatively charged polyenes.
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M3 - Article
AN - SCOPUS:0031587241
VL - 276
SP - 418
EP - 422
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 5-6
ER -