By　varying　the　metal/ligand　ratio,　either　dinuclear　triple　helicates　(Lambda　Lambda/Delta　Delta-La2L3R/S)　or　mononuclear　pincer　complexes　(Lambda/Delta-LaLR/S)　can　be　stereo-selectively　obtained　from　the　same　chiral　bis-tridentate　ligand　(L-R/S).　Due　to　the　open　metal　sites　available　in　both　complexes,　their　catalytic　properties　have　been　demonstrated　with　the　asymmetric　Friedel-Crafts　alkylation　reactions.