Abstract
The 119Sn NMR spectra of several sugar-tin derivatives were recorded. The geometric and steric isomers of all of the organotin derivatives studied were easily differentiated by 119Sn NMR. The appropriate 119Sn resonances are: ca - 50 ppm for trans and −60 ppm for cis vinyltin derivatives (1-3), ca 16 ppm for allyltins 4-6, and ca −32 ppm for tin-carbinols 9 and 11. When the hydroxyl group in carbinol 9 was converted to an O-acetyl group, the chemical shift of 119Sn was shifted to −22 ppm.