Two magic number Au₁₃ nanoclusters, [Au₁₃(PNP)₅Cl₂]Cl₃ and [Au₁₃(Hdppa)₆]Cl₅, with the same nuclearity number but completely distinct configurations, were elaborately constructed using N-containing diphosphine ligands (PNP or Hdppa). Significantly, the metal core of [Au₁₃(PNP)₅Cl₂]³⁺ is a classical Au₁₃ icosahedron, while the [Au₁₃(Hdppa)₆]⁵⁺ core presents a “UFO”-shaped polyhedron, which is illuminated here for the first time. The “UFO”-shaped Au₁₃ core is also unprecedented among 13-atom coinage-metal clusters. The luminescence of [Au₁₃(PNP)₅Cl₂]Cl₃ is at 732 nm in solution and 750 nm in the solid state, close to the near-infrared region. Moreover, the luminescence lifetimes are longer than those of reported icosahedral Au₁₃ nanoclusters. This work demonstrates that N-functionalization of phosphine ligands is one of the effective methods for tailoring atomically precise gold clusters.

中文翻译：

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用含氮二膦配体定制两个神奇数字 Au13 纳米团簇：经典的二十面体核心与前所未有的 UFO 形核心

利用含氮二膦配体精心构建了两个具有相同核数但构型完全不同的幻数Au ₁₃纳米团簇：[Au ₁₃ (PNP) ₅ Cl ₂ ]Cl ₃和[Au ₁₃ (Hdppa) ₆ ]Cl ₅（PNP 或 Hdppa）。值得注意的是，[Au ₁₃ (PNP) ₅ Cl ₂ ] ³⁺的金属核心是经典的 Au ₁₃二十面体，而 [Au ₁₃ (Hdppa) ₆ ] ⁵⁺核心呈现出“UFO”形多面体，被照亮第一次来这里。 “UFO”形状的Au ₁₃核心在13原子造币金属团簇中也是前所未有的。 [Au ₁₃ (PNP) ₅ Cl ₂ ]Cl ₃的发光在溶液中为732 nm，在固态中为750 nm，接近近红外区域。此外，发光寿命比报道的二十面体Au ₁₃纳米团簇的发光寿命更长。这项工作表明，膦配体的 N 功能化是定制原子级精确金簇的有效方法之一。