Ruthenium-catalyzed hydrosilylation of alkynes with preservation of the Si–Si bond of hydrooligosilanes: Regio- and stereoselective synthesis of (Z)-alkenyloligosilanes and carbonyl-functionalized alkenyldisilanes

•Ruthenium-catalyzed Z-selective hydrosilylation of alkynes with hydrooligosilanes is reported.•A deuterium labeling experiment suggests the existence of a vinylideneruthenium species.•Carbonyl-functionalized alkenyloligosilanes were synthesized regio- and stereoselectively.