42439-34-9Relevant academic research and scientific papers
Tamperature Dependence of Magnetic Susceptibilities of (TTT)(TCNQ) and (TTT)(TCNQ)2
Takahashi, Masashi,Sugano, Tadashi,Kinoshita, Minoru
, p. 26 - 35 (1984)
Static magnetic susceptibility and ESR studies of 1:1 and 1:2 charge-transfer complexes of naphthacenobisdithiole and 2,2'-(2,5-cyclohexadiene-1,4-diylidene)bis(propanedinitrile) in the temperature region of 2-310 K are described. (TTT)(TCNQ)2 exhibits a temperature dependent spin susceptibility, while the spin susceptibility of (TTT)(TCNQ) is almost independent of temperature.Spin susceptibilities of the TTT and TCNQ chains, which are evaluated with a g-value decomposition technique, are interpreted in terms of aone-dimensional Hubbard model.In both complexes, the on-site Coulomb repulsion is comparable with or larger than the band width on the TCNQ chains and is smaller on the TTT chains.Two magnetic phase transitions are observed in (TTT)(TCNQ)2.The transition is driven in each chain independently by the Peierls instability.The amount of charge transfer in (TTT)(TCNQ) is determined to be 0.73+/-0.05 from an X-ray photoelectron spectroscopic study.
Electrochemical Behavior of Donor-Tetracyanoquinodimethane Electrodes in Aqueous Media
Jaeger, Calvin D.,Bard, Allen J.
, p. 5435 - 5442 (2007/10/02)
Electrodes prepared as compacted pellets from conductive donor-acceptor complexes of tetraquinodimethane (TCNQ) with several donors (D) (tetrathiotetracene, acridine, quinoline, N-methylphenazine, 2,2'- and 4,4'-bipyridine) were investigated in aqueous solutions.The results were compared to those of a previous investigation of TTF-TCNQ pellets (TTF = tetrathiafulvalene) and to results on single crystals of TTF-TCNQ reported here.The electrodes are stable over a potential region in which they could be employed as inert electrodes.The potential limits depended upon the stabilization gained upon complexation and the relative electrode potentials of the constituent compounds.Upon exceeding the potential limits of stability of the electrode, the electrode was reduced or oxidized.Subsequent voltammograms showed peaks attributable to insoluble compounds formed on the electrode surface.The potentials observed for the redox processes could be correlated to the degree of charge transfer, ρ, as well as gas-transfer ionization potentials and electron affinities.
