Tin Phosphides Supported by Nitrogen-Based Ligands

Abstract

Synthetic route to a series of tin compounds incorporating nitrogen-based chelating
ligands are described. The β-diketiminatotin chloride precursor was utilised to isolate the first
tin-phosphorus tin compound using this ligand, [(HC{C(Me)NAr}2)SnPPh2]. The reactivity of
the tin-phosphorus bond was probed by reaction with elemental selenium, resulting in direct
insertion into the bond. A diamide ligand was employed to investigate this type of ligand in tin
II and IV compounds. Two tin(IV) compounds, [(Me2Si{ArN}2)SnPh2] and
[Li(OEt)2](Me2Si{ArN}2)SnPh2], were formed via reaction of the lithiatedpreligand,
[Me2Si{ArNLi}2], with SnCl4. And finally a novel Sn(II) N-heterocyclic stannylene compound
was formed by reaction of the preligand with SnCl2.