title: Model Studies of the Interaction of Vanadium(III) and Oxovanadium(IV/V) with the Carbonyl Amide Oxygen.
abstract: A series of vanadium(III) and oxovanadium(IV/V) compounds with the ligands, N-(2-nitrophenyl)pyridine-2-carboxamide (Hpycan), N-(phenyl)pyridine-2-carboxamide (Hpheca), and N-(2-pyridyl)acetamide (Hpyra), containing the amide functionality, was prepared and characterized both in solution and in solid state. All vanadium compounds contain a vanadium-amide oxygen bond. Crystal data for [VOCl(2)(OC(2)H(5))(Hpheca)] (4) are monoclinic; P2(1)/a; a = 12.668(5) Å, b = 8.084(3) Å, c = 17.222(6) Å, alpha = 108.148(12) degrees; Z = 4. In addition to the synthesis and crystallographic studies, the optical, infrared, and magnetic properties of these compounds are reported. Electron paramagnetic resonance [of oxovanadium(IV) species] and (1)H, (13)C{(1)H}, and (51)V nuclear magnetic resonance [of oxovanadium(V) compounds] properties are reported as well.
authors.affiliation: Department of Chemistry, Section of Inorganic and Analytical Chemistry, University of Ioannina, 45110 Ioannina, Greece, Department of Chemistry, NMR Center, University of Ioannina, 45110 Ioannina, Greece, Department of Natural Sciences, University of Cyprus, 1678 Nicosia, Cyprus, and NRCPS Demokritos, Institute of Materials Science, 15310 Aghia Paraskevi Attikis, Greece.
authors.forename: Kalliopi D.
authors.initials: KD
authors.lastname: Soulti
authors.forename: Anastasios
authors.initials: A
authors.lastname: Troganis
authors.forename: Aggelos
authors.initials: A
authors.lastname: Papaioannou
authors.forename: Themistoklis A.
authors.initials: TA
authors.lastname: Kabanos
authors.forename: Anastasios D.
authors.initials: AD
authors.lastname: Keramidas
authors.forename: Yiannis G.
authors.initials: YG
authors.lastname: Deligiannakis
authors.forename: Catherine P.
authors.initials: CP
authors.lastname: Raptopoulou
authors.forename: Aris
authors.initials: A
authors.lastname: Terzis