New route to aryltin(IV) halides by spontaneous cyclometallation of benzylideneaminotin(IV) halides; X-ray crystal structure of the ortho-metallated ketimine, o-SnCl3-p-MeC6H3C(:NH)p-C6H4Me

Abstract

The benzylideneaminotin(IV) halides, SnCl₃(N : CPh₂), SnCl₃[N : C(p-tolyl)₂], SnCl₃[N : C(p-chlorophenyl)₂], and SnBr₃(N : CPh₂) spontaneously rearrange to form the ortho-trihalogenostannylbenzylideneamines o-SnCl₃-p-RC₆H₃C(: NH)-p-C₆H₄R (R = H, Cl, or Me)(IIa—c) and o-SnBr₃C₆H₄C(: NH)Ph (IId), the novel ring structures of which are indicated by their i.r., ¹H n.m.r., and ¹¹⁹Sn Mössbauer spectra, and by an X-ray crystallographic study of the di-p-tolylketimine derivative o-SnCl₃-p-MeC₆H₃C(: NH)-p-C₆H₄Me.