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Calix[n]arene-based Polyradicals: Enhancing Ferromagnetism by Avoiding Edge Effects

Abstract

Trough-bond interacting organic polyradicals, rendered by customizable capacities of state-of-the-art synthetic routes, are ideal systems to investigate spin topologies. Relying on Rajca and co-workers synthetic efforts, hereby we investigate the role of borders in the stability of the high-spin ground state in a series of realistic linear and ring-like arylmethyl polyradical derivatives. We show that, compared to the linear counterpart, the absence of borders in a ring-like arrangement of arylmethyl radicals imposes a larger number of spin-alternation rule violations, which strongly stabilizes the high-spin ground state. In addition, the structural flexibility of the investigated compounds translates into the existence of various structural energy minima for which the ferromagnetic ground state is always maintained. In view of the present results we propose these rings as possible candidates for the development of enhanced high spin single molecule toroics.

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Publication details

The article was received on 20 Jun 2017, accepted on 11 Aug 2017 and first published on 11 Aug 2017


Article type: Paper
DOI: 10.1039/C7CP04145D
Citation: Phys. Chem. Chem. Phys., 2017, Accepted Manuscript
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    Calix[n]arene-based Polyradicals: Enhancing Ferromagnetism by Avoiding Edge Effects

    D. Reta, I. D. P. R. Moreira and F. Illas, Phys. Chem. Chem. Phys., 2017, Accepted Manuscript , DOI: 10.1039/C7CP04145D

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