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Doklady Physical Chemistry

, Volume 479, Issue 1–2, pp 52–56 | Cite as

Complexation of TiF4 with PhP(O)[CH2C(O)NMe2]2 in CH2Cl2: Appearance of a Chiral Center at Chelate Coordination

  • E. G. Il’in
  • V. V. Kovalev
  • E. E. Nifant’ev
Physical Chemistry
  • 7 Downloads

Abstract

The reaction of TiF4 with PhP(O)[CH2C(O)NMe2]2 in CH2Cl2 has been studied by 19F NMR spectroscopy. It has been found that the major reaction products are chelate tetrafluoro complex (η2-L)TiF4 where the ligand is coordinated to the titanium ion through the P=O and C=O groups and cis-TiF4(ОР···L)2 where both ligands are coordinated to the central ion through the more basic P=O groups. Spectral features of the tetrafluoro chelate have been studied, which have been attributed for the first time to the appearance of a chiral center at chelate coordination. The character of manifestation of conformational isomerism of the chelate ring and chiral center in the chelating ligand in mixed octahedral complexes of d0 transition metal fluorides in 19F NMR spectra is discussed.

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • E. G. Il’in
    • 1
  • V. V. Kovalev
    • 1
  • E. E. Nifant’ev
    • 2
  1. 1.Kurnakov Institute of General and Inorganic ChemistryRussian Academy of SciencesMoscowRussia
  2. 2.Nesmeyanov Institute of Organoelement CompoundsRussian Academy of SciencesMoscowRussia

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