1ST EXAMPLES OF 1-BENZOSTANNOLES WITH TIN-HALOGEN BONDS - X-RAY CRYSTAL-STRUCTURE OF RIMETHYLSILYL)AMINO-2,3-DIETHYL-1H-1-BENZOSTANNOLE

Treatment of 1-zirconaindenes 1 with tin tetrachloride gave the hither to unknown 1-benzostannole 2 with two tin-chlorine bonds. Compound 2 r eacted with various nucleophiles, which led to pure disubstituted deri vatives, but monosubstitution was not readily achieved. Monosubstitute d compounds were, however easily obtained by reaction of 1-zirconainde nes 1 with organotin trichloride. Tin derivatives were characterized b y multinuclear NMR, microanalysis and mass spectrometry. The first X-r ay crystal structure determination of a stannole is reported.