Creation of New pi-Electron Systems with Novel Properties and Functions

为了制备兼具导电性和铁磁性的化合物，我们设计了在芳环的1，3-或1，3，5-位上带有TTF-或二茂铁-单元的给体体系。利用钯催化的四硫富瓦烯锡与卤代苯衍生物的交叉偶联反应，合成了含TTF单元的给体分子。由TTF-施主制备的二价和三价自由基显示出半导体的导电性。然而，这些自由基盐表明自由基中心之间几乎没有铁磁相互作用。在钯催化下，二茂铁基锌试剂与卤代苯衍生物发生交叉偶联反应，合成了含二茂铁单元的给体分子。该反应在一锅法中容易地产生产物。二茂铁二酮的二价双自由基或三价三自由基盐显示出一定的二茂铁基离子相互作用。然而，该系统的电导率测量表明，自由基盐是绝缘体。

In order to create the compounds which have both conductivity and ferromagnetic properties, we designed the donor systems bearing TTF- or ferrocene-unit at the 1,3-or 1,3,5-positions of aromatic rings. The donor molecules with TTF-units have been synthesized using the palladium-catalyzed cross-coupling reaction of tetrathiafulvalenyltin with halogenated benzene derivatives. The dication diradicals and trication triradicals prepared from the TTF-donors show conductivity like a semi-conductor. However, these radical salts indicate almost no ferromagnetic interaction between radical centers. The donor molecules with ferrocene-units have been synthesized by the palladium-catalyzed cross-coupling reaction of ferrocenylzinc reagent with halogenated benzene derivatives. This reaction easily produces the products in a one-pot procedure. The dication diradical or trication triradical salts of the ferrocenedonor show some interaction of ferrocenyl irons. However, the conductivity measurements of this system indicate that the radical salts are a insulator.