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- W3183887351 abstract "Gold is the most inert metal and does not form a bulk hydride. However, gold becomes chemically active in the nanometer scale and gold nanoparticles have been found to exhibit important catalytic properties. Here, we report the synthesis and characterization of a highly stable ligand-protected gold hydride nanocluster, [Au22H3(dppee)7]3+ [dppee = bis(2-diphenylphosphino) ethyl ether]. A synthetic method is developed to obtain high purity samples of the gold trihydride nanocluster with good yields. The properties of the new hydride cluster are characterized with different experimental techniques, as well as theoretical calculations. Solid samples of [Au22H3(dppee)7]3+ are found to be stable under ambient conditions. Both experimental evidence and theoretical evidence suggest that the Au22H3 core of the [Au22H3(dppee)7]3+ hydride nanocluster consists of two Au11 units bonded via two triangular faces, creating six uncoordinated Au sites at the interface. The three H atoms bridge the six uncoordinated Au atoms at the interface. The Au11 unit behaves as an eight-electron trivalent superatom, forming a superatom triple bond (Au11 ≡ Au11) in the [Au22H3(dppee)7]3+ trihydride nanocluster assisted by the three bridging H atoms." @default.
- W3183887351 created "2021-08-02" @default.
- W3183887351 creator A5051908147 @default.
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- W3183887351 date "2021-07-20" @default.
- W3183887351 modified "2023-10-10" @default.
- W3183887351 title "The synthesis and characterization of a new diphosphine-protected gold hydride nanocluster" @default.
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- W3183887351 doi "https://doi.org/10.1063/5.0056958" @default.
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