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Characterization of Stannaspherene and New Endohedral Clusters

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This study investigates stannaspherene, a stable 12-atom tin cluster (Sn12^2-), known for its ability to trap transition metals, forming a new class of endohedral clusters. We focus on the preparation of crystalline materials derived from stannaspherene and endohedral stannaspherene, characterizing them in both bulk and gas phases. Additionally, we explore the stabilization of germaspherene (Ge12^2-) through transition metal doping. We report the synthesis of a novel Zintl cluster, [Ge9PdPPh3]^3-, leading to a tri-metallic cluster, [Ni@(Ge9PdPPh3)]^2-.

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Characterization of Stannaspherene and New Endohedral Clusters

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  1. Characterization of Stannaspherene and Endohedral Stannaspherene Lai-Sheng Wang, Department of Physics, Washington State University 2710 University Drive, Richland, WA 99354 Stannaspherene and endohedral stannaspherenes: Stannaspherene refers to a highly stable and symmetric 12-atom tin cluster, Sn122-, which has been discovered in our lab previously in cluster beam experiments. It has been found that stannaspherene can trap transition metals to form a new class of endohedral clusters. Sn122- (1Ag, Ih) We aim to prepare new materials based on stannaspherene or endohedral stannaspherenes in crystalline forms and characterize them in the bulk, as well as in the gas phase. Although Ge122- (germaspherene) is not a stable cage cluster, we expect that the doping of a transition metal may stabilize it to give a class of M@Ge12- endohedral germaspherenes. In an attempt to synthesize Pd@Ge12-, we isolated A new Zintl cluster [Ge9PdPPh3]3– as a (2,2,2-crypt)K+ salt through the reaction of K4Ge9 and Pd[PPh3]4. We have also found that the as-prepared bimetallic [Ge9PdPPh3]3– cluster could successfully trap a nickel atom to form a novel trimetallic cluster [Ni@(Ge9PdPPh3)]2–.

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