In the title compound, lphosphino-P)-2-(methylthio-S)ethane]ruthenium(
II) tetraphenylborate hemidichloromethane solvate, RuCl-(C10H14)(C5H13
PS)][B(C6H5)(4)].0.5CH(2)Cl(2), the hybrid Me(2)PCH(2)CH(2)SMe ligand
is bidentate (kappa(2) P,S), forming a five-membered chelate ring. The
complex cation has two chiral centres, i.e, on the Ru and S atoms, an
d the relative configuration is R(Ru)S*(S).