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Ring size affects the kinetic and thermodynamic formation of [2]rotaxanes featuring an unsymmetric bis-crown ether component

Abstract

Bridging of a [2]pseudorotaxane formed from an unsymmetric mono-crown ether and an ammonium salt has provided two types of [2]rotaxanes, with the axle component positioned within a large (4L) and small (4S) ring, respectively. 1H NMR spectroscopy has revealed that 4L is the kinetically favored [2]rotaxane, whereas 4S is thermodynamically favored at low temperature.

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Publication details

The article was received on 06 Jul 2019, accepted on 09 Oct 2019 and first published on 11 Oct 2019


Article type: Research Article
DOI: 10.1039/C9QM00441F
Mater. Chem. Front., 2019, Accepted Manuscript

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    Ring size affects the kinetic and thermodynamic formation of [2]rotaxanes featuring an unsymmetric bis-crown ether component

    M. Naito, T. Fujino, S. Tajima, S. Miyagawa, K. Yoshida, H. Inoue, H. Takagawa, T. Kawasaki and Y. Tokunaga, Mater. Chem. Front., 2019, Accepted Manuscript , DOI: 10.1039/C9QM00441F

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