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

Masaya Naito; Takaaki Fujino; Shinya Tajima; Shinobu Miyagawa; Kazuyuki Yoshida; Hajime Inoue; Hiroaki Takagawa; Tsuneomi Kawasaki; Yuji Tokunaga

doi:10.1039/C9QM00441F

You do not have JavaScript enabled. Please enable JavaScript to access the full features of the site or access our non-JavaScript page.

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

Masaya Naito,

^a Takaaki Fujino,^a Shinya Tajima,^a Shinobu Miyagawa,^a Kazuyuki Yoshida,^b Hajime Inoue,^b Hiroaki Takagawa,^b Tsuneomi Kawasaki

^c and Yuji Tokunaga

*^a

Author affiliations

* Corresponding authors

^a Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui, Bunkyo, Fukui 910-8507, Japan
E-mail: tokunaga@u-fukui.ac.jp

^b Forensic Science Laboratory, Fukui Prefectural Police H.Q., Ohte, Fukui 910-8515, Japan

^c Department of Applied Chemistry, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan

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.

This article is part of the themed collection: Mechanical Bond and Dynamic Covalent Bond

Download options Please wait...

Supplementary files

Supplementary information PDF (1409K)

Article information

DOI: https://doi.org/10.1039/C9QM00441F
Article type: Research Article
Submitted: 06 юли 2019
Accepted: 09 окт 2019
First published: 11 окт 2019

Download Citation

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

Permissions

Request permissions

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.

Social activity

Fetching data from CrossRef.
This may take some time to load.

Materials Chemistry Frontiers

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

Abstract

Supplementary files

Article information

Download Citation

Permissions

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

Social activity

Search articles by author

Spotlight

Advertisements