Magnetism in new classes of TTF-based charge transfer complexes

Charge transfer (CT) complexes are promising for developing molecule-based magnets, where pi-electrons play an important role. New classes of molecular magnets are presented in the TTF-based CT complexes from points of unconventional magnetism. pi-d interaction in d-electron-spin-incorporated CT complexes give anomalous effect of magnetic transition on the electron transport. The coexistence of metallic conduction and localized spin feature appears in the system located in the metal-insulator boundary. 1D metal having ferromagnetic interaction and triangle-based spin ladder system are also obtained from CT complexes.