Issue 22, 2022

Strong magnetic exchange coupling in a radical-bridged trinuclear nickel complex

Abstract

Reaction of 2,3,6,7,10,11-hexaaminotriphenylene hexahydrochloride (HATP·6HCl) and (TpPhNi)Cl (TpPh = tris(3,5-diphenyl-1-pyrazolyl)borate) produces the radical-bridged trinickel complex [(TpPhNi)3(HITP)] (HITP3−˙ = 2,3,6,7,10,11-hexaiminotriphenylene). Magnetic measurements and broken-symmetry density functional theory calculations reveal strong exchange coupling persisting at room temperature between HITP3−˙ and two of the three Ni2+ centers, a rare example of strong radical-mediated magnetic coupling in multimetallic complexes. These results demonstrate the potential of radical-bearing tritopic HITP ligands as building blocks for extended molecule-based magnetic materials.

Graphical abstract: Strong magnetic exchange coupling in a radical-bridged trinuclear nickel complex

Supplementary files

Article information

Article type
Communication
Submitted
28 apr 2022
Accepted
18 may 2022
First published
18 may 2022
This article is Open Access
Creative Commons BY-NC license

Dalton Trans., 2022,51, 8583-8587

Strong magnetic exchange coupling in a radical-bridged trinuclear nickel complex

L. Yang, J. J. Oppenheim and M. Dincă, Dalton Trans., 2022, 51, 8583 DOI: 10.1039/D2DT01337A

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