Synthesis of Monomeric Divalent Tin(II) Compounds with Terminal Chloride, Amide, and Triflate Substituents

Monomeric three‐coordinate (amidinato)tin chloride [PhC(NtBu)2SnCl] (1) was prepared by the reaction of N,N′‐di‐tert‐butylcarbodiimide, phenyllithium and SnCl2. Themetathesis reaction of 1 with AgSO3CF3 and (Me3Si)2NLi afforded the formation of PhC(NtBu)2SnOTf (Tf = CF3SO2) (2) and PhC(NtBu)2SnN(SiMe3)2 (3). The reductive dehalogenation of 1 with L‐selectride resulted in the formation of the four‐coordinate homoleptic tin compound Ph2C2(NtBu)4Sn (4). Compounds 1, 2, 3, and 4 were characterized by single‐crystal structural analysis. Furthermore, 1 was treated with Fe2(CO)9 to afford the Lewis acid–base adduct 5. This article addresses the synthesis and characterization of amidinato‐stabilized monomeric chlorostannylene. Furthermore, the chlorostannylene was converted into its amide and triflate derivatives by substitution reaction. To verify the Lewis basicity of chlorostannylene it was treated with Fe2(CO)9, whereupon it formed the Lewis acid–base adduct.