Molybdenum Chelates, Ligand Exchange Reactions, BisThe reactions of M o(CO)6, Mo(acac)2(NO)2, and M o 0 2(acac) 2 with bis(2-salicylideneaminophenyl)disulfide in the presence of triphenylphosphane have been studied. The crystal structure of salicylaldehyde-2-mercaptoanilato(2-)-triphenylphosphaneoxidedioxomolybdenum(VI) was determined by X-ray analysis.