Strong ferromagnetic exchange coupling in a {NiII4} cluster mediated through an air-stable tetrazine-based radical anion

Maykon A. Lemes; Gabriel Brunet; Amélie Pialat; Liviu Ungur; Ilia Korobkov; Muralee Murugesu

doi:10.1039/C7CC04554A

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Strong ferromagnetic exchange coupling in a {Ni ^II₄} cluster mediated through an air-stable tetrazine-based radical anion†

Maykon A. Lemes,^a Gabriel Brunet,

^a Amélie Pialat,^a Liviu Ungur,^b Ilia Korobkov^a and Muralee Murugesu

*^a

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* Corresponding authors

^a Department of Chemistry and Biomolecular Sciences, University of Ottawa, ON K1N 6N5, Canada
E-mail: m.murugesu@uottawa.ca
Fax: +1 (613) 562 5170
Tel: +1 (613) 562 5800, ext. 2733

^b Theory of Nanomaterials Group and INPC – Institute for Nanoscale Physics and Chemistry, Katholieke Universitiet Leuven, Celestijnenlaan, 200F, 3001 Leuven, Belgium

Abstract

A planar tetradentate 3,6-bis(2-pyrimidyl)-1,2,4,5-tetrazine (BpymTz) templating chelate affords the formation of an unprecedented BpymTz˙⁻ radical anion bridged {Ni^II₄} complex. Detailed magnetic measurements performed on the isolated air stable [Ni^II₄(BpymTz˙⁻)Cl₆(DMF)₈]Cl·0.5(H₂O) compound reveal strong ferromagnetic Ni^II–BpymTz˙⁻ interactions with a coupling constant of J = 98.84 cm⁻¹.

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Article information

DOI: https://doi.org/10.1039/C7CC04554A
Article type: Communication
Submitted: 12 Jun 2017
Accepted: 07 Jul 2017
First published: 07 Jul 2017

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Chem. Commun., 2017,53, 8660-8663

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Strong ferromagnetic exchange coupling in a {Ni^II₄} cluster mediated through an air-stable tetrazine-based radical anion

M. A. Lemes, G. Brunet, A. Pialat, L. Ungur, I. Korobkov and M. Murugesu, Chem. Commun., 2017, 53, 8660 DOI: 10.1039/C7CC04554A

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