Mr. Maurya et C. Gopinathan, SYNTHESES AND SPECTRAL PROPERTIES OF DINITROSYLMOLYBDENUM(0) AND DIOXOMOLYBDENUM(VI) COMPLEXES, Bulletin of the Chemical Society of Japan, 66(7), 1993, pp. 1979-1983
Syntheses of dinitrosylmolybdenum(0) complexes of Schiff bases derived
from salicylaldehyde, 5-chlorosalicylaldehyde, o-hydroxyacetophenone,
and p-nitrobenzoylhydrazide have been carried out in one step by the
reaction of Mo(acac)2(NO)2! (acacH=acetylacetone) and the Schiff base
s. The complexes are of the type Mo-(LH)2(NO)2! (LH2=Schiff base) in
which Schiff bases behave as monobasic bidentate ligands and coordinat
e to molybdenum through the azomethine nitrogen and enolic oxygen of t
he hydrazide moiety after deprotonation. Two geometrical isomers with
nitrosyl groups trans to each other have been noticed in solution. Dio
xomolybdenum(IV) complexes of the above Schiff bases have also been sy
nthesized using MoO2(acac)2! as precursor for comparison.