Bromine adatom promoted C-H bond activation in terminal alkynes at room temperature on Ag(111)

doi:10.1039/c7cp07972a

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	Bromine adatom promoted C-H bond activation in terminal alkynes at room temperature on Ag(111)
	Liu, Jing 1,2; Chen, Qiwei 1; He, Qilin 1; Zhang, Yajie 1,3; Fu, Xiangyu 1; Wang, Yongfeng 3; Zhao, Dahui 1; Chen, Wei 4; Xu, Guo Qin 4; Wu, Kai 1
刊名	PHYSICAL CHEMISTRY CHEMICAL PHYSICS
	2018-04-28
卷号	20 期号:16 页码:11081-11088
ISSN号	1463-9076
DOI	10.1039/c7cp07972a
英文摘要	The activation of C-H bonds in terminal alkynyl groups at room temperature was achieved in the reaction of 2,5-diethynyl-1,4-bis(4-bromophenylethynyl) benzene on Ag(111). Scanning tunneling microscopy studies showed the formation of organometallic species, whose stabilization was confirmed by density functional theory calculations, at room temperature as the product of C-H bond activation. The partial conversion of organometallic structures into covalent products of the homocoupling between the terminal alkynes was achieved by further annealing the sample at 420 K. Detached Br adatoms were suggested to play a key role in promoting the C-H bond activation. This proposal was supported by the theoretical study based on a simplified model of the system, showing the weakening of the C-H bond in the alkynyl group by an approaching Br atom. The results provide a new strategy for on-surface C-H bond activation under mild conditions, which register great potential applications in on-surface synthesis and bottom-up preparation of functional nanomaterials.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000431821800046
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/43113]
专题	中国科学院化学研究所
通讯作者	Wang, Yongfeng; Zhao, Dahui; Wu, Kai
作者单位	1.Peking Univ, Coll Chem & Mol Engn, BNLMS, Beijing 100871, Peoples R China 2.Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China 3.Peking Univ, Dept Elect, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China 4.Natl Univ Singapore, Dept Chem, Singapore 117543, Singapore
推荐引用方式 GB/T 7714	Liu, Jing,Chen, Qiwei,He, Qilin,et al. Bromine adatom promoted C-H bond activation in terminal alkynes at room temperature on Ag(111)[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2018,20(16):11081-11088.
APA	Liu, Jing.,Chen, Qiwei.,He, Qilin.,Zhang, Yajie.,Fu, Xiangyu.,...&Wu, Kai.(2018).Bromine adatom promoted C-H bond activation in terminal alkynes at room temperature on Ag(111).PHYSICAL CHEMISTRY CHEMICAL PHYSICS,20(16),11081-11088.
MLA	Liu, Jing,et al."Bromine adatom promoted C-H bond activation in terminal alkynes at room temperature on Ag(111)".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 20.16(2018):11081-11088.