title: Synthesis and spectroscopic characterization of cationic mononuclear oxovanadium(IV) complexes with tetradentate Schiff bases as ligands.
abstract: New tetradentate Schiff-base oxovanadium(IV) complexes [VOL']SO4 (where L' = tetradentate ligands derived from 2,4-dihydroxy 5-acetyl acetophenone and substituted diamines) were prepared and characterized by physico-chemical techniques. All the complexes are monomeric in nature and a square-pyramidal geometry is proposed. Various ligand-field and molecular-orbital parameters have been calculated.
authors.affiliation: Department of Chemistry, Karnatak University, Dharwad, Karnataka, India.
authors.forename: Umesh B
authors.initials: UB
authors.lastname: Gangadharmath
authors.forename: Vidyanand K
authors.initials: VK
authors.lastname: Revankar
authors.forename: Vinayak B
authors.initials: VB
authors.lastname: Mahale
mesh_terms: D000098:Acetophenones / Q000737:chemistry; D002412:Cations; D003959:Diamines / Q000737:chemistry; D008024:Ligands; D008958:Models, Molecular; D008968:Molecular Conformation; D012545:Schiff Bases / Q000737:chemistry*; D013057:Spectrum Analysis; D014638:Vanadates / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D000098:Acetophenones; D002412:Cations; D003959:Diamines; D008024:Ligands; D012545:Schiff Bases; C075743:oxovanadium IV; D014638:Vanadates