Abstract
The reactions of [M(CO)
6
], M = Cr or Mo with isatin (isatH) were investigated. Three complexes with molecular formulae [Cr(CO)
5
(isatH)] (1), [Cr
2
O
2
(isatH)
2
] (2) and [Mo
2
O
4
(isatH)
2
] (3) were isolated from the reactions with isatH. In presence of bipyridine, bpy, two derivatives [Cr(CO)
4
(isatH)]·bpy (4) and [Mo(CO)
4
(isatH)]·bpy (5) were isolated. All complexes were characterized by elemental analysis, infrared, mass, ESR and
1
H NMR spectroscopy. The UV-Vis spectra of the complexes in different solvents showed bands due to either metal-to-ligand or ligand-to-ligand charge transfer transition. Thermal properties of the complexes were investigated by TG technique.