Effect of Ring Asymmetry on Pseudorotation at Five-Coordinate Phosphorus in Phosphadiazetidinones
Open Access
- 1 September 1970
- journal article
- research article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 25 (9) , 903-905
- https://doi.org/10.1515/znb-1970-0902
Abstract
Non-equivalence of fluorine atoms has been observed in the 19F n.m.r. spectra of 1-alkyl-1,1-difluoro-N-methyl-N′-phenyl-1,2,4-phosphadiazetidin-3-ones at -40°C but not in the spectra of analogous N,N′-dimethyl compounds and a mechanism for pseudorotation in these compounds is proposed to explain this difference.Keywords
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