α,ω-Bis(trialkynyltin) Compounds with a Linear or Cross-Shaped Spacer

The preparation of arylene-, alkylene-, or dimethylenediphenyl-bridged bis(trichlorotin) compounds with two or three phenyl rings from the reaction of the corresponding hexacyclohexyl derivatives with tin tetrachloride is described. Hexachlorides with mixed aryl−alkyl bridges were prepared in the same way. When arylene-bridged ditins were substituted on aryl rings with alkoxy groups, it was necessary to use hexamethyl derivatives instead of the cyclohexyl compounds to obtain the corresponding hexachlorides. In these compounds, weak inter- and/or intramolecular interactions were detected by X-ray analysis. The ditin hexachlorides were transformed into the corresponding hexaalkynyl derivatives, precursors for hybrid materials.