期刊
CHEMICAL SCIENCE
卷 11, 期 5, 页码 1226-1232出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9sc05796j
关键词
-
资金
- National Science Foundation of China [21531002, 21720102004]
- Shanghai Science Technology Committee [13JC1400600]
The formation of two types of heterobimetallic molecular knots, double trefoil and trefoil knots, induced by s-block metal ions, is presented. Coordination of K+, Ca2+, Sr2+ or Ba2+ ions with amide groups plays a crucial role in the formation of these trefoil knots. Remarkably, the reversible topological transformation between a figure-eight knot and double trefoil or trefoil knots can be induced by coordination of s-block metal ions to amide groups. X-ray crystallographic data and NMR experiments support the structural assignments.
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