Synthesis and Crystal Structures of the First Antimony(III) Aziridinides.

The first antimony(III) aziridinyl derivatives are reported. Treatment of anhydrous SbCl with N-lithioaziridine Li(Azn) (Azn = NCH) afforded the structurally unique heterobimetallic lithium/antimony(III) amide complex [LiSb(μ-Cl)(μ-Azn)(THF)] (1). Homoleptic Sb(Azn) (2) has become available for the first time through an amide group exchange reaction between Sb(NMe) and 3 equiv of aziridine.