Thermal decomposition of overcrowded 1,2,4,3-trichalcogenastannolanes 1 resulted in the formation of the first stable 1,2-chalcogenastannete derivatives 3via[2 + 2]cycloaddition of intermediary stannanethione and stannanselone 2; the molecular structures of 3 were determined by X-ray crystallographic analysis.
N. Tokitoh, Y. Matsuhashi and R. Okazaki, J. Chem. Soc., Chem. Commun., 1993, 407 DOI: 10.1039/C39930000407
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