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Updated: Aug 6, 2026
Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
A Small Structural Change Makes a Big Difference: Synthesis of a Bowl-Like Polyoxometalate-Encapsulated {Ag7}5+
Manzhou Chi1, Jianyu Wei2, Yaohui Wen1
1MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Intelligent Molecular Materials and High-throughput Manufacturing, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China.
Abstract:
Ligand-induced structural transformation has been developed as an effective strategy to manipulate the geometric/electronic structures, elemental compositions, and physicochemical properties of atomically precise silver clusters. In this work, we have demonstrated how a small structural change in the configuration of a bowl-like antimonotungstate ({Sb3W30}-3) ligand can make a big difference in the synthesis of polyoxometalate (POM)-encapsulated Ag clusters (Agn@POM). The new bowl-like {Sb3W30}-3 can successfully induce the formation of a {Ag7} cluster, {Ag7(Sb3W30)}. Interestingly, the {Ag7(Sb3W30)} cluster, which can generate exposed Ag sites upon removal of three labile CH3CN ligands, serves as a common building block for constructing three new types of Agn@POM derivatives, namely polymeric {Ag7(Sb3W30)}n, {Ag15(Sb3W30)2}, and {Ag23(Sb3W30)2}, via either inter-cluster assembly or intra-cluster kernel growth processes. In addition, photocatalytic H2 evolution studies reveal the importance of accessibility to highly exposed Ag active sites and their synergistic cooperation with the redox-active bowl-like {Sb3W30}-3 ligand. This study establishes a strategic platform for the rational design and structural evolution of Agn@POM clusters, demonstrating how subtle modulation of all-inorganic POM ligands influences their geometric and catalytic properties at the atomic level.
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