X-ray diffraction studies of two azametallatranes. Peculiarities of structures of N, N', N -tris(trimethylsilyl)azametallatranes using DFT calculations

Abstract Single crystal structures of N(CH 2 CH 2 NSiMe 3 ) 3 Si-Vinyl ( 1 ) and N(CH 2 CH 2 NSiMe 3 ) 3 Si- n -Butyl ( 2 ) were determined by X-ray diffraction studies: both compounds show weak transannular N ax →M interactions ( 1 , d (N ax →Si)=2.712(1) A, 2 , d (N ax →Ge)=2.743(3) A). General trends for molecular structures of the group 14 elements (Si, Ge, Sn) azametallatranes are discussed with also included DFT calculations data.