Structural studies in main group chemistry. Part VIII. The crystal and molecular structure of bis(N-methyl-N-acetylhydroxylamino)-dimethyltin(IV)

Abstract

The crystal structure of Me₂Sn(O·NMe·COMe)₂ has been determined by X-ray methods. The crystals are mono-clinic, space group P2₁/c with a= 8·8933(8), b= 7·2861 (7), c= 20·5352(14)Å, β= 104·472(5)°. The geometry at tin is distorted octahedral, the overall symmetry approximating to C_2ν. The two N-acetylhydroxylamine residues function as bidentate ligands forming one short covalent and one long co-ordinate bond to tin, whilst the Me–Sn–Me group is not linear, the C–Sn–C bond angle being 145·8°. Bond distances within the two ligand residues indicate significant multiple-bond character for the C–N bonds and single bond zwitterionic character for the CO bonds.