Three oxovanadium complexes with three amino acids and 1.10Phenanthrolinum chloride monohydrate, 1.10 phenanthoroline (L1), glycine (L2), tyrosine (L3), and homoserine (L4) are synthesized. The complexes C1, [VO(Cl) (gly)(phen)] C2, [VO (Cl) (tyro)(phen)] were characterized by conductivity measurements, magnetic susceptibility, UV-Vis, IR, thermal gravimetric analysis TGA, ¹H and ¹³C NMR. The molecular structure of the complexes C1, and C2 were confirmed using the DFT calculation to obtain the optimized geometries using the Gaussian09 program at the B3LYP/LANL2DZ level of theory. The vanadium atoms in the three complexes were coordinated in distorted octahedral geometries with L1, L2, L3, L4 acting as a bidentate and tridentate ligands through the amino nitrogen atoms and carboxylate oxygen atom.