Synthesis and Characterization of the Cis and Trans Isomers of Ph3sn-ch=ch-c(oh)rr' Compounds and Their Gem Analogs - Evidence for An Intramolecular Ho-]sn Interaction in the Solid and Solution-state

The cis and trans isomers of compounds of the type Ph3Sn-CH=CH-C(OH)RR' as well as their gem analogs were synthesized and characterized. Mossbauer spectroscopy enabled to assess the presence of weak intramolecular HO-->Sn interactions in the cis and gem isomers in the solid state. In solution, the existence of such coordinations was evidenced by C-13 and Sn-119 Secondary Isotope Multiplet of Partially Labelled Entities (SIMPLE) NMR. We correlate the results of our NMR experiments with the reactivity of these compounds towards iodine