Complete Chalcogenation of Tin(II) Centers in an Imidotin Cluster†
The authors gratefully acknowledge financial support from the Natural Sciences and Engineering Research Council (Canada).
Graphical Abstract
Three terminal SnE bonds are present in the imidotin clusters [(thf)LiSn3E3(μ3-NtBu)4]− (E=Se, Te; see picture: N blue; Sn gray; Te orange; Li purple; O red) that are readily obtained under mild conditions, as solvent-separated ion pairs with [Li(thf)4]+ (E=Se, Te) or [(thf)Li([12]crown-4)]+ counterions (E=Se), by the reactions of the anionic cluster [(thf)LiSn3(μ3-NtBu)4]− with the appropriate chalcogen.