Department of Chemistry, Tsinghua University , Beijing 10084, People's Republic of China.
Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen, Fujian 361005, People's Republic of China.
J Am Chem Soc. 2017 Jul 19;139(28):9451-9454. doi: 10.1021/jacs.7b04622. Epub 2017 Jul 10.
Bimetallic nanoclusters AuCu with chemical composition of AuCu(C≡CR)(PhP)Cl (where RC≡C is from 3-ethynylthiophene (HCS-3-C≡CH) or ethynylbenzene (PhC≡CH)) has been synthesized. Single X-ray structural analysis reveals that AuCu has a multishelled core structure of Au@Au@Cu@Au, comprising a centered icosahedral Au (Au@Au) surrounded by an icosidodecahedral Cu shell and an outmost shell of a chairlike hexagonal Au. The alkynyl carbon is bound to the hollow sites on the AuCu nanocluster surface, which is a novel interfacial binding mode in alkynyl-protected alloy nanoclusters. The Cu icosidodecahedron is unprecedented and AuCu represents the first alkynyl-protected Au-Cu alloy nanocluster.
已合成出具有 AuCu(C≡CR)(PhP)Cl（其中 RC≡C 来自 3-乙炔基噻吩 (HCS-3-C≡CH) 或乙炔基苯 (PhC≡CH)）组成的双金属纳米团簇 AuCu。单晶 X 射线结构分析表明，AuCu 具有 Au@Au@Cu@Au 的多壳核结构，包含一个中心的二十面体 Au（Au@Au），被一个二十面体 Cu 壳和一个最外层的椅式六方 Au 壳包围。炔基碳与 AuCu 纳米团簇表面的空穴位结合，这是炔基保护的合金纳米团簇中的一种新型界面结合模式。Cu 二十面体是前所未有的，AuCu 代表了第一个炔基保护的 Au-Cu 合金纳米团簇。
