Synthesis, structures, and physical properties of molecular conductors based on unsymmetrical metal-dithiolene complexes

A variety of unsymmetrical metal-dithiolene complexes were newly synthesize d by a ligand exchange reaction in refluxing acetone, followed by a HPLC (O DP; acetonitrile - H2O,) procedure. Using these unsymmetrical complexes, an ion radical salts were prepared with various donor molecules. Among them, f our salts show metallic behavior. The electrical resistivity under pressure of EDT-TTF[Ni(dmit) (mnt)], which is isostructural with ambient pressure s uperconductor alpha-EDT-TTF[Ni(dmit)(2)], was also performed.