Synthesis and characterization of isatin complexes with M(CO)₆, M=Cr or Mo

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), [Cr₂O₂(isatH)₂] (2) and [Mo₂O₄(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 ¹H 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.

Keywords:

• Isatin
• Chromium
• Hexacarbonyl
• Molybdenum

Additional information

Notes on contributors

Foziah A. Al-Seif

§Portions of this work were taken from a thesis submitted by F.A. Al Seif in partial fulfilment of the requirement for PhD degree, Chemistry Department, Girls College of Education, Reyadh, Kingdom of Saudi Arabia, 2005.