Preparation and Properties of Nitrosyl Complexes of Molybdenum

Article abstract of DOI:10.1246/bcsj.53.2297

Reactions of some dpe (dpe=Ph2PCH2CH2PPh2) complexes of molybdenum with nitrosyl hexafluorophosphate (NOPF6) have been investigated.The reaction of MoH4(dpe)2 with NOPF6 in benzene-methanol affords two types of complexes, a protonated species, trans-PF6 (1a) and a non-protonated species, trans-MoF(NO)(dpe)2*1/2C6H6.From the nitroxyl complex 1a, a series of nitrosyl complexes has been obtained.Some nitrosyl complexes exhibit cis-trans isomerism.Reactions of the nitrosyl complexes with protonic acids afford the corresponding nitroxyl complexes or the anion substitution products.Cationic nitrosyl complexes are obtained by the reactions of Mo(CO)L(dpe)2 (L=N2 or C2H4) and Mo(C2H4)2(dpe)2 with NOPF6.Attemps were also made to prepare nitrosyl complexes of molybdenum by use of other nitrosylating agents.