Chemically induced magnetic isotope effect on tin nuclei

A magnetic isotope effect on ¹¹⁷Sn and ¹¹⁹Sn nuclei was observed for the first time in the photolysis of (1-naphthylmethyl)-trimethyltin 1. The isotope effect is accompanied by the fractionation of magnetic and non-magnetic tin isotopes: the magnetic isotopes are accumulated in starting compound 1, whereas the non-magnetic isotopes predominate in the photolysis product, hexamethyldistannane 2.