Halogen oxidation and nitrosylation of some aldimine and ketimine carbonyl complexes of chromium and molybdenum

The halogen oxidation and nitrosylation of cis-[(SB)M-(CO)4] [M = Cr or Mo, SB = N,N′-ethylenebis(p-tolualideneimine), N,N′-ethylenebis(p-N,N-dimethylaminobenzalideneimine) or N,N′-ethylenebis(methyl-p-methoxyphenylketimine); M = Mo, SB = N,N′-ethylenebis-(cinnamylideneimine) or N,N′-ethylenebis(methyl-p-methylphenylketimine)] have been studied. Halogenation of [(SB)Cr(CO)4] yielded [(SB)CrX2] (X = Cl, Br or I) where-as [(SB)Mo(CO)4] gave [(SB)Mo(CO)3X2] (X = Br or I) and [(SB)MoXx] (X = I, n = 2; X = Cl or Br, n = 4). NOCl produced [(SB)Cr(NO)2Cl2] and [(SB)Mo(CO)2(NO)Cl] when reacted with the corresponding [(SB)M(CO)4]. The complexes were characterized by physico-chemical and spectroscopic measurements.