[Bis(trimethylsilyl)amido-κN]{tert-butyl[(E)-2-(tert-butylimino)ethyl]amido-κ2N,N′}tin(II), a key intermediate in the synthesis of 1,3-di-tert-butyl-2,3-dihydro-1H-1,3,2-diazastannole

The title compound, [Sn(C 10 H 21 N 2 )(C 6 H 18 NSi 2 )], contains the Sn II centre in a trigonal-pyramidal geometry. The basal plane is formed by three N atoms and the fourth apical position is occupied by a stereoactive lone pair. The Sn atom is displaced from the plane of the three N atoms by 1.1968 (12) A. The Sn-N bonds are highly polarized toward the N atoms, as confirmed by natural bonding orbital analysis.