(S)-1,2-Dimethyl-1,1,2-triphenyl-2-(4-piperidiniometh­yl)disilane chloride

The title compound, C(26)H(34)NSi(2) (+)·Cl(−), shows chirality at silicon. Because of its highly selective synthesis with an e.r. of >99:1 by means of a racemic resolution with mandelic acid, the free disilane is of great importance to the chemistry of highly enanti­omerically enriched lithio­silanes and their trapping products. N—H⋯Cl hydrogen bonding is present between the protonated nitro­gen atom of the piperidino group and the chloride counter-anion. The silicon–silicon distance as well as silicon–carbon and carbon–nitro­gen bond lengths are in the same ranges as in other quaternary, functionalized di- and tetra­silanes.