Mixed ligation to vanadium(III): Synthesis, spectra and structures of bis(acetylacetonato)(o-phenanthroline)vanadium(III) fluoroborate and bis(acetylacetonato)(o-phenanthroline)vanadium(III) perchlorate

摘要

Two mixed ligand vanadium(Ill) complexes bis(acetylacetonato)(phenanthroline)vanadium(III) fluoroborate (1) and bis(acetylacetonato)(phenanthroline)vanadium(III) perchorate (2) have been prepared and characterized by UV-Vis, IR, H-1 NMR spectroscopic techniques and single crystal X-ray diffraction. The electronic spectra are as expected for V(III) in an octahedral environment. The H-1 NMR spectra are typical of paramagnetic V(III) species. The complexes have crystallized with dichloromethane solvate and are isomorphous. The coordination sphere is composed of vanadium in a distorted octahedral environment, ligated to two bidentate chelating acetylacetonate ligands through the oxygen atoms and two phenanthroline nitrogens. (c) 2005 Elsevier B.V. All rights reserved.