Literature DB >> 12109109

Synthesis and reversible thermo-induced conformational transitions of a stable nitroxide biradical based on calix[4]arene.

Qi Wang1, Yong Li, Guo-shi Wu.   

Abstract

A stable paramagnetic calix[4]arene(III) bearing two nitroxide groups on the upper rim is synthesized, which exhibits a strong intramolecular spin-spin exchange interaction and is found to be able to undergo reversible conformational transitions upon heating.

Entities:  

Year:  2002        PMID： 12109109     DOI： 10.1039/b201010k

Source DB:  PubMed          Journal:  Chem Commun (Camb)        ISSN： 1359-7345            Impact factor:   6.222


  4 in total

1.  Spin labeling monitors weak host-guest interactions.

Authors:  Lenz Kröck; Alexander Shivanyuk; David B Goodin; Julius Rebek
Journal:  Chem Commun (Camb)       Date:  2003-12-16       Impact factor: 6.222

2.  1,3-Alternate calix[4]arene nitronyl nitroxide tetraradical and diradical: synthesis, X-ray crystallography, paramagnetic NMR spectroscopy, EPR spectroscopy, and magnetic studies.

Authors:  Andrzej Rajca; Maren Pink; Sumit Mukherjee; Suchada Rajca; Kausik Das
Journal:  Tetrahedron       Date:  2007-10-29       Impact factor: 2.457

3.  Exchange coupling mediated through-bonds and through-space in conformationally constrained polyradical scaffolds: calix[4]arene nitroxide tetraradicals and diradical.

Authors:  Andrzej Rajca; Sumit Mukherjee; Maren Pink; Suchada Rajca
Journal:  J Am Chem Soc       Date:  2006-10-18       Impact factor: 15.419

4.  Synthesis of Nitroxide Diradical Using a New Approach.

Authors:  Pavel Fedyushin; Tatyana Rybalova; Nargiz Asanbaeva; Elena Bagryanskaya; Alexey Dmitriev; Nina Gritsan; Maxim Kazantsev; Evgeny Tretyakov
Journal:  Molecules       Date:  2020-06-11       Impact factor: 4.411
  4 in total

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