Au₁₀₈S₂₄(PPh₃)₁₆: A Highly Symmetric Nanoscale Gold Cluster Confirms the General Concept of Metalloid Clusters

详细信息    查看全文

• 作者：Sebastian Kenzler ; Claudio Schrenk and Prof. Dr. Andreas Schnepf
• 刊名：Angewandte Chemie International Edition
• 出版年：2017
• 出版时间：January 2, 2017
• 年：2017
• 卷：56
• 期：1
• 页码：393-396
• 全文大小：1969K
• ISSN：1521-3773

文摘

The reduction of (Ph₃P)AuCl with NaBH₄ in the presence of HSC(SiMe₃)₃, leads to one of the largest metalloid gold clusters: Au₁₀₈S₂₄(PPh₃)₁₆ (1). Within 1 an octahedral Au₄₄ core of gold atoms arranged as in Au metal is surrounded by 48 oxidized Au atoms of an Au₄₈S₂₄ shell, a novel building block in gold chemistry. The protecting Au₄₈S₂₄ shell is completed by additional 16 Au(PPh₃) units, leading to a complete protection of the gold core. Within 1 the Au–Au distances get more molecular on going from the center to the ligand shell. Cluster 1 represents novel structural motives in the field of metalloid gold clusters which also are partly typical for metal atoms in metalloid clusters: M_nR_m (n>m).