Fe(C 11 H 9 N 2 O 5) 2 (H 2 O) 2 ]•3(C 3 H 7 NO) (1), [Mn(C 11 H 9 N 2 O 5) 2 (H 2 O) 2 ]•3(C 3 H 7 NO) (2) and [Cu(C 11 H 9 N 2 O 5) 2 (H 2 O) 2 ]•3(C 3 H 7 NO) (3)complexes have been synthesized and characterized by elemental analysis, FT-IR and EPR spectra, magnetic susceptibility and thermal analysis. All complexes show distorted octahedral geometry. In 1, 2 and 3complexes, metal ions are coordinated by means of two oxygen atoms of salicylic residue and two nitrogen atoms bonded with maleic residue and two water molecules.