期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 141, 期 40, 页码 15994-16002出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.9b08055
关键词
-
资金
- Elements Strategy Initiative for Catalysts & Batteries (ESICB) of the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan
- Nanotechnology Platform of the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan [12024046]
- JSPS KAKENHI [JP17H01182, JP19K15499]
- Iketani Science and Technology Foundation
An efficient and selective method was developed for the synthesis of bimetallic clusters, MAu24L18 (M = Pd or Pt; L = thiolates or alkynyls), by the reaction of Au(I)L oligomers with quasi-spherical superatoms [HMAu8(PPh3)(8)](+) activated by hydride doping. This hydride-mediated conversion afforded previously known clusters MAu24(SC2H4Ph)(18) having an icosahedral (M@Au-12)(6+) core at similar to 200 mg scale, with a yield of >50%, and was successfully applied to a variety of primary thiols with good yields. Although the application to secondary and tertiary thiolates was limited, the conversion produced the novel cluster [PdAu23(ScC6H11)(17)](0) having a poorly symmetrical, flattened (Pd@Au-12)(6+) core. The conversion produced the new alkynyl-protected clusters [MAu24(C (math)CArF)(18)](2-) (Ar-F = 3,5-(CF3)(2)C6H3) having an icosahedral (M@Au-12)(4+) core, with a yield of >50%. The larger number of valence electrons in the M@Au-12 core protected by alkynyls is ascribed to an increase in attractive potential of the M@Au-12 core owing to the stronger electron-withdrawing nature of alkynyls than thiolates. This simple and versatile bottom-up approach will provide an opportunity to synthesize a variety of superatoms on a large scale for the promotion of materials science based on superatoms as building units.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据