Synthesis of Oxovanadium(IV) Complexes with Tetraaza Coordinating Ligands

Abstract

Oxovanadium(IV) complexes of the type [VO(mac)]SO4(where mac = tetraaza macrocyclic ligands derived by condensation of thenil with 1,4-diaminobenzene or 3,4-diaminopyridine and their reaction withβ-diketones) have been prepared using vanadyl ion as kinetic template. The prepared macrocyclic complexes were characterized by elemental analyses, molar conductance, magnetic moments, and infrared, electronic, and electron spin resonance data. From the spectroscopic studies, five-coordinate square-pyramidal geometry for the VO2+complexes have been proposed wherein derived ligands act as tetradentate chelating agents.

Synthesis, Characterization, PXRD Studies, Theoretical Calculation, and Antitumor Potency Studies of a Novel N,O‐Multidentate Chelating Ligand and Its Zr(IV), V(IV), Ru(III), and Cd(II) Complexes

“…e molar conductance values for the complexes in 10 −3 M DMF solution are in the range of 46-89 Ω −1 cm 2 •mol −1 for Zr(IV), V(IV), Ru(III), and Cd(II) complexes. e values of the Zr(IV) and Ru(III) reveal their nonelectrolytic nature, while the values of the V(IV) and Cd(II) complexes reveal their electrolytic nature [64,65]. 13 C-NMR Spectra.…”