Crystal Structure of the PdAu24(SR)180 Superatom

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• 作者：Marcus A. Tofanelli ; Thomas W. Ni ; Billy D. Phillips ; Christopher J. Ackerson
• 刊名：Inorganic Chemistry
• 出版年：2016
• 出版时间：February 1, 2016
• 年：2016
• 卷：55
• 期：3
• 页码：999-1001
• 全文大小：202K
• ISSN：1520-510X

文摘

The single-crystal X-ray structure of Pd-doped Au₂₅(SR)₁₈ was solved. The crystal structure reveals that in PdAu₂₄(SR)₁₈, the Pd atom is localized only to the centroid of the Au₂₅(SR)₁₈ cluster. This single-crystal X-ray structure shows that PdAu₂₄(SR)₁₈⁰ is well conceptualized with the superatom theory. The PdAu₂₄(SR)₁₈⁰ charge state is isoelectronic with Au₂₅(SR)₁₈⁺¹ as determined by a first order Jahn–Teller effect of similar magnitude and by electrochemical comparison. The previously reported increased stability of PdAu₂₄(SR)₁₈ can be rationalized in terms of Pd–Au bonds that are shorter than the Au–Au bonds in Au₂₅(SR)₁₈.