Strong ferromagnetic exchange coupling in a {Ni} 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

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

Chem Commun (Camb). 2017 Aug 11;53(62):8660-8663. doi: 10.1039/c7cc04554a. Epub 2017 Jul 18.

Authors

Maykon A Lemes¹, Gabriel Brunet¹, Amélie Pialat¹, Liviu Ungur², Ilia Korobkov¹, Muralee Murugesu¹

Affiliations

¹ Department of Chemistry and Biomolecular Sciences, University of Ottawa, ON K1N 6N5, Canada. m.murugesu@uottawa.ca.
² Theory of Nanomaterials Group and INPC - Institute for Nanoscale Physics and Chemistry, Katholieke Universitiet Leuven, Celestijnenlaan, 200F, 3001 Leuven, Belgium.

PMID: 28718476
DOI: 10.1039/c7cc04554a

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} complex. Detailed magnetic measurements performed on the isolated air stable [Ni(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.