On-Surface Synthesis of Five-Membered Copper Metallacycles Using Terminal Alkynes

doi:10.1021/acs.langmuir.4c01653

On-Surface Synthesis of Five-Membered Copper Metallacycles Using Terminal Alkynes

2024-07-09

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DOI：10.1021/acs.langmuir.4c01653

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We present our studies on the adsorption, deprotonation, and reactions of 4,4 ''-diethynyl-1,1 ':4 ',1 ''-terphenyl on Cu(111) under ultrahigh-vacuum conditions using scanning tunneling microscopy combined with density functional theory calculations. Sequential annealing treatments induce deprotonation of pristine molecules followed by chemical reactions, resulting in branched nanostructures. Within the nanostructures, a previously unreported, double-spot linkage is observed. Our density functional theory calculations unravel that this linkage corresponds to a five-membered copper metallacycle.

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On-Surface Synthesis of Five-Membered Copper Metallacycles Using Terminal Alkynes

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