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An oxidovanadium(IV) complex with 4,4′-di-tert-butyl-2,2′-bipyridine ligand: Synthesis, structure and catalyzed cyclooctene epoxidation

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  • معلومة اضافية
    • Contributors:
      Nikolaev Institute of Inorganic Chemistry Novosibirsk (NIC); Siberian Branch of the Russian Academy of Sciences (SB RAS); Laboratoire de chimie de coordination (LCC); Institut de Chimie de Toulouse (ICT); Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3); Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP); Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3); Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS); Institut universitaire de France (IUF); Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.); Novosibirsk State University (NSU); Russian Foundation for Basic Research (grant 18-03-00155-a); Centre National de la Recherche Scientifique (CNRS, France)
    • بيانات النشر:
      HAL CCSD
      Elsevier
    • الموضوع:
      2020
    • Collection:
      Université Toulouse III - Paul Sabatier: HAL-UPS
    • نبذة مختصرة :
      International audience ; The interaction of vanadium(III) chloride (VCl3) with 4,4'-di-tert-butyl-2,2'-bipyridine (dbbpy) in air resulted in the monomeric oxidovanadium(IV) complex [VOCl2 (dbbpy)(H2O)] (1) in high yield. The complex was characterized by IR and EPR spectroscopies, by elemental analysis, and by single crystal X-ray diffraction analysis. The vanadium atom has a distorted octahedral coordination environment. The EPR spectrum of 1 in CH2Cl2 demonstrates an eight-line signal typical of vanadium(IV) with a d(1) electronic configuration. Complex 1 exhibits catalytic activity in the cyclooctene oxidation with tert-butyl hydroperoxide (TBHP) in CHCl3. Detailed EPR, NMR and GC-MS studies of the reaction revealed a few mechanistic details and the nature of by-products that are generated by involvement of the chloroform solvent.
    • Relation:
      hal-02563748; https://hal.science/hal-02563748; https://hal.science/hal-02563748/document; https://hal.science/hal-02563748/file/Polyhedron,%202020,%20177,%20114305.pdf
    • الرقم المعرف:
      10.1016/j.poly.2019.114305
    • Rights:
      info:eu-repo/semantics/OpenAccess
    • الرقم المعرف:
      edsbas.4202319C