New TTF precursors for the construction of conducting and magnetic materials have been synthesized by using the palladium-catalyzed cross-coupling reaction between a mono- or a bis(trialkylstannyl)tetrathiafulvalene and a series of heteroaryl halides. The redox potential and some crystallographic data of these new building blocks are presented and discussed.
Four compounds M1, M2, M3, M4, and one polymer P1 containing tetrathiafulvalene (TTF) units have been synthesized by the condensation of TTF-derived aldehyde and acylhydrazine precursors. UV-vis absorption and electron paramagnetic resonance spectroscopy as well as scanning electron microscopy reveal that the TTF+ stacking of the polymer is considerably enhanced compared to that of the shorter compounds in polar solvents. (C) 2014 Elsevier Ltd. All rights reserved.
Novel spin-polarized TTF donors affording ground state triplet cation diradicals
作者:Jotaro Nakazaki、Michio M. Matsushita、Akira Izuoka、Tadashi Sugawara
DOI:10.1016/s0040-4039(99)00925-9
日期:1999.7
“spin-polarized” donor was successfully extended to TTF-based donor radicals. A series of TTF derivatives carrying a phenyl nitronyl nitroxide group were prepared, and they turned out to afford ground statetripletcation diradicals through one-electron oxidation. Such “spin-polarized” TTF donors are expected to become building blocks for organic conducting ferromagnets.
electronic properties, and crystalstructure of this neutral radical TTF‐Ph‐PTM derivative (1) are reported and implications of its crystalline structure on its electrical properties are discussed. On the other hand, the non‐radical derivative (2), which is isostructural with the radical1, shows an insulating behavior at all measured pressures. The different electronic structures of these two isostructural