Thermogravimetric Analysis Of Metal Complexes Derived From 2-Phenyl-4H-Benzo[D] [3,1]-Oxazin-4-One Ligand.

Developments in the Synthesis of Certain Novel ligand PHBO (2-Phenyl-4H-benzo[d][3,1]-oxazin-4-one) is prepared from the condensation of anthranilic acid, benzoyl chloride and acetic anhydride. The heterocyclic classes which have drawn attention towards its synthesis because of their innumerable biological activities like antiviral, antitumor activity, A new complexes derived from 2-Phenyl-4H-benzo[d] [3,1]-oxazin-4-one with Ni (II), Cu (II), Cr (III), Co (III) ions. They are found to be soluble in organic solvents and characterized by IR, NMR, TGA-DTA, XRD, Elemental analysis and molar conductance measurements. The spectral data of synthesized complexes strongly support the stereochemistry of complexes and suggest the octahedral geometry for the metal ions. The thermogravimetric analysis (TGA) experiment is carried out to explore the thermal stability of the complexes. Thermal behavior of the complexes was checked in the range of temperature from 0 to 900OC in a nitrogen atmosphere. The PHBO ligand and their metal chelates have been tested for their antimicrobial activity using Broth Dilution Method and the results were discussed.