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Abstract
Reaction of benzo-1,2,3-dithiazolyl, 1, with Pt(PPh3)4 has been shown to produce the aminothiolate complex (amt)Pt(PPh3)2 [amt = HNC6H4S], via oxidative addition of 1 to Pt(PPh3)2 followed by S-abstraction by PPh3. Semi-empirical calculations (AM1 and EHT) have been used to probe the oxidative addition step of this reaction. These studies clearly reveal that close approach of 1 to Pt(PR3)2 induces electron transfer from Pt(PR3)2 to 1 with concomitant ring opening at the S─N bond and coordination to the metal centre. The SOMO of this complex retains the π* character of the dithiazolyl ring.