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

Posted on 2017-03-25 - 20:48
The first antimony­(III) aziridinyl derivatives are reported. Treatment of anhydrous SbCl3 with N-lithioaziridine Li­(Azn) (Azn = NC2H4) afforded the structurally unique heterobimetallic lithium/antimony­(III) amide complex [Li3Sb­(μ3-Cl)2(μ-Azn)4(THF)2] (1). Homoleptic Sb2(Azn)6 (2) has become available for the first time through an amide group exchange reaction between Sb­(NMe2)3 and 3 equiv of aziridine. The low-melting Sb2(Azn)6 exhibits a “weak dimer” structure in the crystal.

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