| Abstract: | A new tripodal ligand PO(NH2MePy)3] ( L ) (2MePy = 2‐(4‐methyl pyridyl)) have been synthesized by treating phosphorous oxychloride with 2‐Amino‐4‐methylpyridine in toluene under refluxing condition. The ligand was appeared as a white solid and characterized by several standard analytical and spectroscopic techniques such as FT‐IR, NMR (1H, 13C{1H} and 31P{1H}) and ESI‐MS spectroscopy. The ligand ( L ) undergone metal‐assisted hydrolysis of one P–N bond when treated it with hydrated metal nitrates, M(NO3)2·xH2O (M = Zn, Cu, Co and Ni) under hydrothermal reaction condition in DMF‐H2O (1:1). This results in the formation of four mononuclear complexes {PO2(NH2MePy)2}2M] M = Zn ( 1 ), Cu ( 2 ), Co ( 3 ), Ni ( 4 )], where ligand ( L ) hydrolyses to a anionic bis(organoamido)phosphate, PO2(NH2MePy)2]?. All complexes were completely characterized by various analytical techniques and their solid state molecular structures were established by single crystal X‐ray diffraction. All complexes are isostructural with a metal (II) ion situating at the centre of a distorted octahedron. Two tridentate PO2(NH2MePy)2]? ligands are coordinated to metal(II) ion through N‐ and O‐donor atoms, thus neutralizing the charge of the complex. Optical properties of all complexes in solid state have been studied. Moreover, antimicrobial activities of complexes 1 – 4 have been explored. To the best of our knowledge, this is the first report of such compounds investigated for their antimicrobial activities. |
