Hydrobismuthation: Insertion of Unsaturated Hydrocarbons into the Heaviest Main Group Element Bond to Hydrogen.

The bismuth hydride (2,6-MesHC)BiH (, Mes = 2,4,6-trimethylphenyl), which has a Bi-H H NMR spectroscopic signal at δ = 19.64 ppm, was reacted with phenylacetylene at 60 °C in toluene to yield [(2,6-MesCH)BiC(Ph)=CH] () after 15 min. Compound was characterized by H, C NMR, and UV-vis spectroscopy, single crystal X-ray crystallography, and calculations employing density functional theory.

Disproportionation of Sn(II){CH(SiMe)} to ˙Sn(III){CH(SiMe)} and ˙Sn(I){CH(SiMe)}: characterization of the Sn(I) product.

Half a century after the photolytic disproportionation of Lappert's dialkyl stannylene SnR, R = CH(SiMe) (1) gave the persistent trivalent radical [˙SnR], the characterization of the corresponding Sn(I) product, ˙SnR is now described. It was isolated as the hexastannaprismane SnR (2), from the reduction of 1 by the Mg(I)-reagent, Mg(BDI) (BDI = (DipNCMe)CH, Dip = 2,6-diisopropylphenyl).