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

为了合成既具有导电性又具有铁磁性的化合物，我们设计了在芳环的1，3-或1，3，5-位上含有TTF或二茂铁单元的给体体系。用钯催化的四硫富瓦烯基锡与卤代苯衍生物的交叉偶联反应合成了含TTF基团的给体分子。由TTF-给体制备的阳离子基团和三元基团具有半导体性质的导电性。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。通过二茂铁锌试剂与卤代苯衍生物在钯催化下的交叉偶联反应，合成了含二茂铁单元的给体分子。这种反应很容易在一锅程序中产生产品。二茂铁的阳离子二基或三基盐与二茂铁铁离子有一定的相互作用。然而，该体系的电导率测量表明，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.