Thermal reactions of [M(CO) 6 ], M=Cr, Mo and W with the two Schiff bases: 2-[(pyridin-2-ylmethylidene)amino]-6-aminopyridine (L 1 ) and 2-[(pyridin-2-ylmethylidene)amino]phenol (HL 2 ) were investigated. Three complexes with molecular formulas [Cr(L 1 ) 3 ], 1, [MoO 2 (L 1 ) 2 ], 2 and [WO 2 (L 1 ) 2 ], 3 were isolated from the reactions with L 1 . The corresponding reactions with HL 2 produced the complexes [Cr(HL 2 ) 2 ], 4, [Mo 2 (CO) 4 O 2 (HL 2 ) 2 ], 5 and [W(CO) 4 (HL 2 )], 6. All complexes were characterized by elemental analysis, infrared, mass and 1 H NMR spectroscopy. The molar conductivities of the complexes in DMF indicated nonelectrolytic behavior. The prepared ligands and their complexes exhibited intraligand (π–π * ) fluorescence and can potentially serve as photoactive materials. The catalytic activity of the complexes towards to hydrogen peroxide decomposition reaction was investigated. Both the ligands and their complexes have been screened for antibacterial activities.