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

Monomeric, crystalline tin(II) amides Sn(NR2)X [X = OAr 1 or NR′22; R = SiMe3, Ar = C6H2But2-2,6-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.