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Sign determination of coupling constants in CF2H and CF3 derivatives of silver(III)

✍ Scribed by Reint Eujen; Berthold Hoge

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
271 KB
Volume
35
Category
Article
ISSN
0749-1581

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✦ Synopsis

The NMR spectra of the square-planar silver(III) anions and were investigated. The [ Ag(CF 3 ) 4 ] -[ Ag(CF 2 H) 4 ]signs of 1J(109Ag,13C), 2J(109Ag,19F) and 2J(109Ag,1H) and those of the long-range couplings 4J(19F,19F), 3J(19F,13C), 3J(13C,1H) and 4J(19F,1H) were determined by analysis of higher order spin systems and from 2D heteronuclear correlations. All determined reduced coupling constants are positive with respect to 1J(13C,1H) > 0 or 1J(19F,13C) AE 0. Correlations between couplings for a variety of compounds suggest that no sign CF 3 Ag(III) crossover occurs.

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