Raman Spectroscopy Shows Interchain through Space Charge Delocalization in a Mixed Valence Oligothiophene Cation and in Its π-Dimeric Biradicaloid Dication
Journal of the American Chemical Society2008Vol. 130(43), pp. 14028–14029
Citations Over TimeTop 10% of 2008 papers
Juan Casado, Kazuo Takimiya, Tetsuo Otsubo, F. RAMIREZ, J.J. Quirante, Rocío Ponce Ortiz, Sandra Rodríguez‐González, María Moreno Oliva, Juan T. López Navarrete
Abstract
The vibrational Raman spectra of a decathiophene are provided in three relevant oxidations states: for the radical cation, its class III mixed valence system and its "frozen, -170 degrees C" class II MV analogue; for the dication, its singlet biradical pi-dimer and its "hot, +70 degrees C" magnetically active triplet excited state. Everything is compatible with interpentathiophene charge delocalization occurring at distances of 4-5 A similar to those found in the crystals of pi-stacked oligothiophenes. This stresses the interest of this spectroscopic tool for the analyses of electronic processes in crystals or in thin films of conjugated organic molecules.
Related Papers
- → Tetrakis(bicyclo[2.2.2]octeno)cyclooctatetraene dication: a stable COT dication with a tub structure(1994)24 cited
- → Preparation and Structures of Dication Salts of Phenyl-Substituted TTF Vinylogues(2002)13 cited
- → Non-pentagonal unsaturated dodecahedranes-in-plane delocalized 4C/3e radical cations and σ-bishomoaromatic 4C/2e dications(2000)13 cited
- → Protonated tert-pentyl dication (C5H122+, isopentane dication)(2007)8 cited
- → Reactivities, Conformational Properties, and Molecular Structures of σ-Bonded Cyclic Selenurane Dications(1998)