Thiacalix[4]arene Etching of an Anisotropic CuH Intermediate for Accessing Robust Modularly Assembled Copper Nanoclusters.

Atom-precise metal nanoclusters (NCs) with large bulk (nuclearity >60) are important species for insight into the embryonic phase of metal nanoparticles and their top-down etching synthesis. Herein, we report a metastable rod-shaped 70-nuclei copper-hydride NC, [Cl@CuH(PhC≡C)(CFCOO)] (), with Cl as the template, in which the Cl@Cu kernel adopts a distinctive metal packing mode along the bipolar direction, and the protective ligand shell exhibits corresponding site differentiation. In terms of metal nuclearity, is the largest alkynyl-stabilized Cu-hydride cluster to date.