Development of Molecular Conductors Linked with Magnetic Metal Ions and Their Application to Spin-electronics Materials

为了在以TTF体系为主体的分子导体中实现导电电子与局域自旋的强相互作用，我们进行了具有顺磁性金属离子配位的TTF配体的制备，以及基于TTF配体的金属配合物的物理性质研究。从具有Schiff碱型配位的TTF-配体出发，我们成功地开发了电子传导和磁性共存的分子体系，以及具有氧化还原性质的分子体系，这些分子体系显示出自旋交叉现象。另一方面，吡唑型TTF配体得到的多核金属配合物在很低的温度下表现出单分子磁体行为。

In order to realize strong interaction between conducting electrons and localized spins in molecular conductors mainly based on the TTF system, we have been carrying out the preparation of TTF-ligands which have the coordination sites to paramagnetic metal ions, and the studies of physical properties of the metal complexes based on the TTF-ligands. From TTF-ligands with the Schiff base type coordination sites, we succeeded in the development of molecular system in which electron conduction and magnetic property coexisted, and those with redox properties showing spin-crossover phenomena. On the other hand, pyrazol-type TTF-ligands gave multinuclear metal complexes which showed a single molecular magnet behavior at very low temperature.