Issue 12, 2019

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.

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

Supplementary files

Article information

Article type
Research Article
Submitted
06 Jul 2019
Accepted
09 Okt 2019
First published
11 Okt 2019

Mater. Chem. Front., 2019,3, 2702-2706

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, 3, 2702 DOI: 10.1039/C9QM00441F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements