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 4 2022
Accepted
18 5 2022
First published
18 5 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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