... Acknowledgment. We acknowledge support by the US . ... 0002-7863/89/1511-3591$01.50/0 0 1989 American Chemical Society ... The reagents, [Et,N] [SH] (Alfa Chemical Co.), PhSSPh, Fe(CO)S, W(CO),, HSEt, NaSMe, and Me1 (Aldrich Chemical Co.), were used as received. ...