Atom-Precise Chiral Lanthanide-Silver(I) Heterometallic Clusters Ln 3 Ag 5 .

Three pairs of chiral Ln-Ag(I) clusters d/l-Ln 3 Ag 5 with C 3 symmetry were prepared by d/l-penicillamine as multidentate ligand bridged Ln 3+ and Ag(I) ions. The chiral ligand induced the molecular cluster to be chiral, and the CD spectra of the chiral compounds d/l-Ln 3 Ag 5 were slightly blue-shifted due to the lanthanide contraction. The studies of optical properties indicated that tunable photoluminescence from {AgS}-to-Ln 3+ was achieved by introducing Ln 3+ ions with different emission bands or regulating various excitation light.