Synthesis and X-ray structure of an sp 2 silicon stabilized by two intramolecular coordinations

Reaction of bis[8-(dimethylamino)naphthyl]dihydrosilane with iodine gives 2[L2SiH]+I82–{L =[8-(dimethylamino)naphthyl]}; the X-ray crystal structure determination shows a slightly distorted trigonal bipyramid around the silicon atom with apical NMe2 ligands and short Si–N distances [2.06 and 2.08(1)Å].