title: Synthesis, Bonding, and Reactivity of Vanadium(IV) Oxido-Fluorido Compounds with Neutral Chelate Ligands of the General Formula cis-[V(IV)(═O)(F)(L(N-N))2](+).
abstract: Reaction of the oxidovanadium(IV)-L(N-N) species (L(N-N) is bipy = 2,2'-bipyridine or bipy-like molecules) with either BF4(-) or HF and/or KF results in the formation of compounds of the general formula cis-[V(IV)(═O)(F)(L(N-N))2](+). Structural and spectroscopic (electron paramagnetic resonance) characterization shows that these compounds are in the tetravalent oxidation state containing a terminal fluorido ligand. Density functional theory calculations reveal that the V(IV)-F bond is mainly electrostatic, which is reinforced by reactivity studies that demonstrate the nucleophilicity of the fluoride ligand in a halogen exchange reaction and in fluorination of various organic substrates.
authors.forename: Stamatis S
authors.initials: SS
authors.lastname: Passadis
authors.forename: Constantinos
authors.initials: C
authors.lastname: Tsiafoulis
authors.affiliation: Department of Agricultural Production, Biotechnology and Food Science, Cyprus University of Technology , 3036 Limasol, Cyprus.
authors.forename: Chryssoula
authors.initials: C
authors.lastname: Drouza
authors.forename: Athanassios C
authors.initials: AC
authors.lastname: Tsipis
authors.affiliation: West CHEM, School of Chemistry, University of Glasgow , Glasgow G12 8QQ, U.K.
authors.forename: Haralampos N
authors.initials: HN
authors.lastname: Miras
authors.affiliation: Department of Chemistry, University of Cyprus , Nicosia 1678, Cyprus.
authors.forename: Anastasios D
authors.initials: AD
authors.lastname: Keramidas
authors.forename: Themistoklis A
authors.initials: TA
authors.lastname: Kabanos