Homoleptic Platinum/Silver Superatoms Protected by Dithiolates Linear Assemblies of Two and Three Centered Icosahedra Isolobal to Ne and I

Abstract : Three bimetallic platinum/silver nanoclusters, PtAg(dtp) (1), PtAg(dtp) (2), and PtAg(dtp) (3) (dtp dipropyl dithiophosphate), with cluster electron counts of 8, 16, and 22, respectively, were produced via a one-phase coreduction method. Single-crystal X-ray structures reveal that their inner cores can be visualized as consisting of one, two, and three centered icosahedral Pt@Ag units, respectively. In 2 and 3, these units are vertex-sharing and are assembled linearly. Intriguingly, the 22-electron alloy (3) is isolobal to the linear triiodide anion, I, and represents the first example of a cluster made of three superatoms whose bonding characteristics are similar to those of a triatomic molecular species.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-02280839
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Submitted on : Friday, September 6, 2019 - 4:19:03 PM
Last modification on : Saturday, September 7, 2019 - 1:24:06 AM

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Tzu-Hao Chiu, Jian-Hong Liao, Franck Gam, Isaac Chantrenne, Samia Kahlal, et al.. Homoleptic Platinum/Silver Superatoms Protected by Dithiolates Linear Assemblies of Two and Three Centered Icosahedra Isolobal to Ne and I. Journal of the American Chemical Society, 2019, 141 (33), pp.12957-12961. ⟨10.1021/jacs.9b05000⟩. ⟨hal-02280839⟩

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