期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 2, 页码 650-654出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202010436
关键词
argentivorous molecules; cyclen; cyclic dimers; pentacyclic trefoil; reversible structural transformation; silver(I) complexes
资金
- Ministry of Education, Culture, Sports, Science and Technology of Japan [23550164, 26410100, 17K05844, 18F18343, 20K05480]
- Marubun Research Promotion Foundation (Japan)
- Grants-in-Aid for Scientific Research [20K05480, 23550164, 18F18343, 26410100] Funding Source: KAKEN
The tetra-armed cyclen compound bearing specific groups was prepared and characterized along with its Ag+ complexes. These complexes were found to undergo reversible structural transformations between different ratios of Ag+ / 1, and could selectively encapsulate benzene and [D6]benzene in the solid-state. The stability of the benzene-included structures was attributed to C-H···F-C interactions between the benzene molecule and the ligand molecule.
Tetra-armed cyclen (1) bearing two 4-(4'-pyridyl)benzyl and two 3,5-difluorobenzyl groups and its Ag+ complexes were prepared and structurally characterized. The complexes formed between 1 and Ag+ undergoes a reversible structural transformation between a 2:2 dimeric complex and a 3:5 pentacyclic trefoil complex with changes in the Ag+/ 1 molar ratio. It was also revealed that the 3:5 trefoil complex could encapsulate benzene and [D6]benzene selectively in solid-state. The benzene-included structures are stabilized by C-H center dot center dot center dot F-C interactions between the benzene molecule and the ligand molecule.
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