Premium
19 F coupling constants and chemical shifts in some dimethylamino and alkoxy derivatives of tellurium hexafluoride, cis TeF 4 XY
Author(s) -
Dalton John,
McFarlane William,
Wickens Clive R.,
Fraser George W.,
Millar James B.
Publication year - 1976
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270081008
Subject(s) - geminal , coupling constant , chemical shift , chemistry , alkoxy group , stereospecificity , coupling (piping) , spin (aerodynamics) , medicinal chemistry , stereochemistry , physics , organic chemistry , materials science , catalysis , metallurgy , alkyl , particle physics , thermodynamics
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.