Synthesis and Structure Determination of a New Au₂₀ Nanocluster Protected by Tripodal Tetraphosphine Ligands

Journal Article · Mon Mar 31 00:00:00 EDT 2014 · Inorganic Chemistry

DOI:https://doi.org/10.1021/ic500562r· OSTI ID:1227054

Chen, Jing ^[1]; Zhang, Qianfan ^[1]; Williard, Paul G. ^[1]; Wang, Lai-Sheng ^[1]

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1. Brown Univ., Providence, RI (United States)

We report the synthesis and structure determination of a new Au₂₀ nanocluster coordinated by four tripodal tetraphosphine (PP₃) ligands {PP₃ = tris[2-(diphenylphosphino)ethyl]phosphine}. Single-crystal Xray crystallography and electrospray ionization mass spectrometry show that the cluster assembly can be formulated as [Au₂₀(PP₃)₄]Cl₄. The Au₂₀ cluster consists of an icosahedral Au₁₃ core and a seven-Au-atom partial outer shell arranged in a local C₃ symmetry. One PP₃ ligand coordinates to four Au atoms in the outer shell, while the other three PP₃ ligands coordinate to one Au atom from the outer shell and three Au atoms from the surface of the Au₁₃ core, giving rise to an overall chiral 16-electron Au cluster core with C3 symmetry.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1227054
• Journal Information: Inorganic Chemistry, Vol. 53, Issue 8; ISSN 0020-1669
• Publisher: American Chemical Society (ACS)
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Environmental Molecular Sciences Laboratory