Jone Kirubavathy SVelmurugan RParameswari KChitra S2020-10-052020-10-0520140976-3031https://recentscientific.com/sites/default/files/Download_828.pdfhttps://dspace.psgrkcw.com/handle/123456789/2039A new series of transition metal complexes of Cu(II) and VO(IV) were synthesized from the ligand 2,3-diphenyl quinoxaline. The structural features were arrived from the elemental analysis, magnetic susceptibility, molar conductance, FT- IR, UV-Vis, 1H-NMR and ESR spectral studies. The data show that the Cu (II) and VO(IV) complexes are of ML2 type . The UV-Vis., magnetic susceptibility and ESR spectral data suggests a square planar geometry for Cu (II) complex and a square pyramidal geometry for VO(IV) complex. The antimicrobial screening tests were also recorded and gave good results in the presence of ligand system with the metal.enSquare planar geometryCu(II) complexAntimicrobial activityspectral studiesArticle