Specifics of titanium tetrafluoride complexation with Ph2P(O)(CH2)2C(O)NMe2: The remarkable stability of the seven-membered chelate heterocycle TiOPCCCO and its conformational isomerism in solution
- Authors: Il’in E.G.1, Parshakov A.S.1, Privalov V.I.1, Danilov V.V.1, Bodrin G.V.2, Goryunov E.I.2, Nifant’ev E.E.2
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Affiliations:
- Kurnakov Institute of General and Inorganic Chemistry
- Nesmeyanov Institute of Organoelement Compounds
- Issue: Vol 467, No 2 (2016)
- Pages: 122-125
- Section: Chemistry
- URL: https://journals.rcsi.science/0012-5008/article/view/153647
- DOI: https://doi.org/10.1134/S0012500816040054
- ID: 153647
Cite item
Abstract
The composition and structure of the products of the reaction of titanium tetrafluoride with Ph2P(O)(CH2)2C(O)NМе2 (L), the simplest representative of diphenyl[2-(N,N-dialkylcarbamoyl)ethyl]phosphine oxides, in a СН2Сl2 have been studied by 19F and 31P NMR. It has been shown for the first time that functionalized phosphine oxides form stable seven-membered chelate heterocycles on complexes of d° transition metals. On the basis of NMR data, previously unknown conformational isomerism of the seven-membered TiOPCCCO heterocycle in solution has been proposed. A simple and rather efficient method of synthesis of the ligand (L) from commercially available reagents has been developed.
About the authors
E. G. Il’in
Kurnakov Institute of General and Inorganic Chemistry
Email: eg_ilin@mail.ru
Russian Federation, Leninskii pr. 31, Moscow, 119991
A. S. Parshakov
Kurnakov Institute of General and Inorganic Chemistry
Email: eg_ilin@mail.ru
Russian Federation, Leninskii pr. 31, Moscow, 119991
V. I. Privalov
Kurnakov Institute of General and Inorganic Chemistry
Email: eg_ilin@mail.ru
Russian Federation, Leninskii pr. 31, Moscow, 119991
V. V. Danilov
Kurnakov Institute of General and Inorganic Chemistry
Email: eg_ilin@mail.ru
Russian Federation, Leninskii pr. 31, Moscow, 119991
G. V. Bodrin
Nesmeyanov Institute of Organoelement Compounds
Email: eg_ilin@mail.ru
Russian Federation, ul. Vavilova 28, Moscow, 119991
E. I. Goryunov
Nesmeyanov Institute of Organoelement Compounds
Email: eg_ilin@mail.ru
Russian Federation, ul. Vavilova 28, Moscow, 119991
E. E. Nifant’ev
Nesmeyanov Institute of Organoelement Compounds
Author for correspondence.
Email: eg_ilin@mail.ru
Russian Federation, ul. Vavilova 28, Moscow, 119991