title: Discrete Silver(I)-Palladium(II)-Oxo Nanoclusters, {Ag4Pd13} and {Ag5Pd15}, and the Role of Metal-Metal Bonding Induced by Cation Confinement.
abstract: We introduce the class of discrete silver(I)-palladium(II)-oxo nanoclusters with the preparation of {Ag4Pd13} and {Ag5Pd15}. Both polyanions represent the first examples of noble metal-capped polyoxo-noble-metalates in a fully inorganic assembly, featuring an unprecedented host-guest mode containing hetero- and homometallic Ag-Pd and Ag-Ag bonding interactions. Comprehensive theoretical calculations suggest that the Ag-Pd metallic bonds originate partially from surface confinement of AgIguest ions onto the anionic polyoxopalladate host that is induced by strong electrostatic forces. This work opens the field of fully inorganic silver-palladium-oxo nanoclusters, which can be considered as discrete mixed noble metal precursors for the formation of monodisperse core-shell nanoparticles, with high relevance for catalysis.
authors.affiliation: Department of Life Sciences and Chemistry, Jacobs University, P.O. Box 750561, 28725, Bremen, Germany.
authors.forename: Peng
authors.initials: P
authors.lastname: Yang
authors.affiliation: Department of Life Sciences and Chemistry, Jacobs University, P.O. Box 750561, 28725, Bremen, Germany.
authors.forename: Yixian
authors.initials: Y
authors.lastname: Xiang
authors.affiliation: Department of Life Sciences and Chemistry, Jacobs University, P.O. Box 750561, 28725, Bremen, Germany.
authors.forename: Zhengguo
authors.initials: Z
authors.lastname: Lin
authors.affiliation: Department de Química Física i Inorgànica, Universitat Rovira I Virgili, Marcel⋅lí Domingo s/n, 43007-, Tarragona, Spain.
authors.forename: Zhongling
authors.initials: Z
authors.lastname: Lang
authors.affiliation: Department de Química Física i Inorgànica, Universitat Rovira I Virgili, Marcel⋅lí Domingo s/n, 43007-, Tarragona, Spain.
authors.forename: Pablo
authors.initials: P
authors.lastname: Jiménez-Lozano
authors.affiliation: Department de Química Física i Inorgànica, Universitat Rovira I Virgili, Marcel⋅lí Domingo s/n, 43007-, Tarragona, Spain.
authors.forename: Jorge J
authors.initials: JJ
authors.lastname: Carbó
authors.affiliation: Department de Química Física i Inorgànica, Universitat Rovira I Virgili, Marcel⋅lí Domingo s/n, 43007-, Tarragona, Spain.
authors.forename: Josep M
authors.initials: JM
authors.lastname: Poblet
authors.affiliation: Key Laboratory of Cluster Science, Ministry of Education of China; Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry, Beijing Institute of Technology, Beijing, 100081, P.R. China.
authors.forename: Linyuan
authors.initials: L
authors.lastname: Fan
authors.affiliation: Key Laboratory of Cluster Science, Ministry of Education of China; Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry, Beijing Institute of Technology, Beijing, 100081, P.R. China.
authors.forename: Changwen
authors.initials: C
authors.lastname: Hu
authors.affiliation: Department of Life Sciences and Chemistry, Jacobs University, P.O. Box 750561, 28725, Bremen, Germany.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Kortz
keywords: DFT; metal-metal bonding; palladium; polyoxometalates; silver