Atomically Precise Bimetallic Au19Cu30 Nanocluster with an Icosidodecahedral Cu-30 Shell and an Alkynyl-Cu Interface

作者：Wan, Xian-Kai; Cheng, Xiao-Ling; Tang, Qing; Han, Ying-Zi; Hu, Guoxiang; Jiang, De-en^*; Wang, Quan-Ming^*

来源：Journal of the American Chemical Society, 2017, 139(28): 9451-9454.

DOI：10.1021/jacs.7b04622

• GOLD CLUSTERS
• CRYSTAL-STRUCTURE
• METAL NANOCLUSTERS
• PROTECTED GOLD
• OPTICAL-PROPERTIES
• UNIFIED MODEL
• NANOPARTICLES
• LIGANDS
• EMERGENCE
• CATALYSIS

Bimetallic nanoclusters Au19Cu30 with chemical composition of [Au19Cu30(C CR)(22)(Ph3P)(6)Cl-2](NO3)(3) (where RC C is from 3-ethynylthiophene (H3C4S-3-C CH) or ethynylbenzene (PhC CH)) has been synthesized. Single X-ray structural analysis reveals that Au19Cu30 has a multishelled core structure of Au@Au-12@Cu-30@Au-6, comprising a centered icosahedral Au-13 (Au@Au-12) surrounded by an icosidodecahedral Cu-30 shell and an outmost shell of a chairlike hexagonal Au-6. The alkynyl carbon is bound to the hollow sites on the Au19Cu30 nanocluster surface, which is a novel interfacial binding mode in alkynyl-protected alloy nano clusters. The Cu-30 icosidodecahedron is unprecedented and Au19Cu30 represents the first alkynyl-protected Au-Cu alloy nanocluster.

• 出版日期2017-7-19
• 单位厦门大学; 清华大学