K. Shiono, T. Naito, T. Inabe
Mar 13, 2007
Citations
0
Influential Citations
2
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
Pyromellitate is known to form hydrogen-bonding anionic networks when the number of deprotonation from pyromellitic acid is one or two. This unique anion has been utilized for the construction of the π-radical cationic salts of the tetrathiafulvalene (TTF) derivatives. In the crystals of three kinds of the TTF salts and the tetramethyltetra-selenafulvalene salt, pyromellitate was found to form two-dimensional sheets. The anions in the two TTF salts were connected by rhombic-type inter-anionic connection, which is a typical inter-anionic connection pattern for pyromellitate. The TTF derivatives were all in a π-radical mono-cationic state and dimerized in a space dictated by the anionic networks. The extra space in the crystals was filled with crystal solvents. On the other hand, in the crystals of the ethyl-enedithia-tetrathiafulvalene salts, pyromellitate formed only intra-molecular hydrogen bonds. The anion was thus isolated in these crystals.