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Electron‐molecular vibration coupling in the cation‐radical salt of a giant analogue of TTF with ClO 4 − anion
Author(s) -
Graja A.,
Yartsev V. M.,
GarrigouLagrange C.,
Sallé M.,
Gorgues A.
Publication year - 1992
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221740112
Subject(s) - intramolecular force , chemistry , molecule , excited state , ion , raman spectroscopy , salt (chemistry) , molecular vibration , radical ion , electron transfer , spectral line , coupling (piping) , vibronic coupling , photochemistry , absorption spectroscopy , atomic physics , materials science , stereochemistry , organic chemistry , physics , astronomy , optics , metallurgy , quantum mechanics
Spectral studies of an ion‐radical salt DClO 4 of a giant analogue (D) of TTF are performed in which the dihydro‐TTF core is bearing the two conjugated 1,4‐dithiafulvalen‐6‐yl side arms. Both IR absorption and electronic spectra of the donor molecule are measured; Raman scattering is also accomplished. Our main attention is paid to the electronmolecular vibration coupling in the DClO 4 salt. It is shown that the idea of treating the donor molecules as an aggregate of two parts excited by the intramolecular charge transfer is an acceptable first approximation of the EMV coupling in the giant π‐donor. The EMV coupling constants are calculated and compared with those determined for the parent TTF molecule.