Abstract
Abstract The polarized reflection spectra of the crystal of (DBTTF)4·(BF4)2·EtOH complex were measured and the optical parameters were determined by the simulation of the observed reflection spectra. The theoretical analysis of the observed spectra shows that the electronic structure of DBTTF cation molecules is typical of the island type configuration. The 4000 and 11500 cm−1 bands polarized parallel to the stacking axis were assigned to the CT2 and CT1 bands, and the parameters U and t of the Hubbard Hamiltonian were estimated to be (U=8950 cm−1 and t=1250 cm−1.
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