期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 144, 期 5, 页码 2379-2386出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.1c13168
关键词
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资金
- National Science Foundation of China [22031003, 21720102004]
- Shanghai Science Technology Committee [19DZ2270100]
In this study, two chiral radial [5]catenanes were successfully synthesized in a single step through the self-assembly of bidentate ligands containing L-alanine residues and binuclear half-sandwich organometallic rhodium(III)/iridium(III) clips. The single-crystal X-ray diffraction results revealed the complex stereochemical structures of these two chiral radial [5]catenanes.
Herein, we have successfully achieved the stereoselective synthesis of two chiral radial [5]catenanes in a single step through the self-assembly of bidentate ligands containing L-alanine residues and binuclear half-sandwich organometallic rhodium(III)/iridium(III) clips. Remarkably, these two chiral radial [5]catenanes exhibit complex stereochemical structures as revealed by single-crystal X-ray diffraction. The eight binuclear units and eight bidentate ligands in their solid-state structures all exhibit a single planar chirality, and the interlocking between molecular macrocycles exhibits a single co-conformational mechanical helical chirality. This indicates that the introduction of the point chirality in the ligands enables the efficient stereoselective construction of mechanically interlocked molecules. Furthermore, by using ligands containing D-alanine residues, radial [5]catenanes with the opposite planar chirality and opposite co-conformational mechanical helical chirality have also been obtained.
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