Die molekül- und kristallstruktur von trimethylzinnazid Me3SnN3

The electrophilic cleavage reaction of (Me₃Sn)₂CN₂ with the Me₃SiN₃ in diluted ethereal solution affords well-formed crystals of Me₃SnN₂ in excellent yield; the azide was investigated by single crystal X-ray methods. Me₃SnN₃ crystallizes in the pseudohexagonal space group P2/b2/n2₁/n with Z = 4, d_c = 1.960 g cm^?3; a = 1172.5(6); b = 679.5(4); c = 875.5(5) pm; V = 697.55 ų.A total of 480 unique non-zero reflections was obtained at room temperature; refining the structure with anisotropic temperature factors for all non-hydrogen atoms and with isotropic temperatures factors for the hydrodgen atoms resulted in a conventional R-value of 0.024. Exactly planar Me₃Sn-groups are linked in zig-zag-chains by linear N₃-groups while the tin atoms adopt almost ideal symmetric trigonal bipyramidal coordination; the methyl groups of the Me₃Sn moieties are arranged in a staggered conformation along the c-axes.