The first monomeric prochiral tin(II) complexes Sn[N(SiMe3)2]X [X = OC6H2Bu t 2-2,6-Me-4, 1 or NCMe2(CH2)3CME2, 2]; the X-ray structure of 1 and oxidative addition reactions of 2

Abstract

Monomeric, crystalline tin(II) amides Sn(NR₂)X [X = OAr 1 or NR′₂2; R = SiMe₃, Ar = C₆H₂Bu^t ₂-2,6-Me-4, NR′₂= [graphic omitted]Me₂] have been prepared from (a) Sn(NR₂)₂+ SnX₂, (b)[Sn(µ-Cl)(NR₂)]₂+ 2LiX or (c) Sn(NR₂)₂+ ArOH; 1 is V-shaped, O–Sn–N 96.4(1)°; 2+ A–B yields the adducts Sn(A)(B)(NR₂)(NR′₂)[AB =(CF₃CO)₂O 3, Mel 4 or (+)-EtCH(Me)CH₂Br 5], in the case of 5 without significant diastereoselectivity.