| 摘要 |
NEW MATERIAL:A compound expressed by the formula [R1 and R2 represent F, Cl or Br; M represents Ni, Pd or Pt; A represent counter cation (onium); n is 1 or 2]. EXAMPLE:(Dithio-p-fluorobenzyl)-1,2-(dicyano-ethylenethiolato)Ni(II)te tra-n- butylammonium salt. USE:An optical recording medium. PREPARATION:A benzoin or a benzyl derivative is reacted with phosphorus pentasulfide, then hydrolyzed and a transition metal compound such as nickel chloride, etc., is added thereto to initially afford a bis-(dithiobenzyl derivative) metal complex. On the other hand, sodium-cis-1,2-dicyano-1,2-ethylene dithiolate is synthesized and reacted with nickel chloride, etc., and a quaternary ammonium, etc., is added thereto to form a bis-(cis-1,2-dicyano-1,2-ethylene-dithiolate) metal complex onium salt. Then both the former and the latter are refluxed in a solvent to subject ligand-interchange reaction. |
