The 1D Band Structure of Tetrathiotetracene
The analysis in the foregoing sections has shown that most of the organometallic systems belong to the class of the organic metals upon partial electron removal; the transfer paths are ligand-centered. In this section we discuss tetrathiotetracene, TTT, as its solid-state properties are comparable to those of low-dimensional organometallic 1D systems with ligand-centered charge-transfer channels. TTT is schematized in fig. IV.24 where also the stacking pattern is displayed. The angle between the mean molecular plane and the 1D direction differs from 90° (i.e. 41.9°). TTT has been studied in several experimental contributions [IV.102–1V.105]; for a semiempirical tight-binding analysis see [IV.106].
KeywordsThermoelectric Power Molecular Plane Transfer Path Foregoing Section Coulomb Correlation
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