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19F coupling constants and chemical shifts in some dimethylamino and alkoxy derivatives of tellurium hexafluoride, cis TeF4XY

✍ Scribed by John Dalton; William McFarlane; Clive R. Wickens; George W. Fraser; James B. Millar

Publisher: John Wiley and Sons
Year: 1976
Tongue: English
Weight: 259 KB
Volume: 8
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1270081008

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✦ Synopsis

Abstract

The spectra of A~2~BC spin systems provided by the ^19^F nuclei in cis (RO) (MeO)TeF~4~ and (RO) (Me~2~N)TeF~4~ (R = Me, Et, Pr, i‐Pr) have been recorded and analysed. The geminal coupling constants ^2^J(F,F) range from 137–174 Hz and trends in the ^19^F chemical shifts permit complete assignment of the resonances. Stereospecific coupling between ^19^F and the protons of the N‐methylamino groups is also observed.

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