Ring inversion dynamics of derivatives of thianthrene di- and tetraoxide.
The ring inversion barrier for thianthrene tetraoxide was determined by making use of the variable temperature 13C NMR spectra of the 2,7-diisopropyl derivative (DeltaG(double dagger) = 6.5 kcal mol(-1)). The barrier is lower than that measured for a trans thianthrene dioxide derivative (DeltaG(double dagger) = 9.35 kcal mol(-1)). These results agree well with ab initio theoretical predictions.
Casarini
Daniele
D
Department of Chemistry, University of Basilicata, Potenza, Italy.
Coluccini
Carmine
C
Lunazzi
Lodovico
L
Mazzanti
Andrea
A
D006571:Heterocyclic Compounds / Q000737:chemistry*; D008745:Methylation; D008958:Models, Molecular; D015394:Molecular Structure; D010087:Oxides / Q000737:chemistry*; D013696:Temperature
D006571:Heterocyclic Compounds; D010087:Oxides; C009449:thianthrene