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Issue 50, 2021

Valence tautomerism in a [2 × 2] Co4 grid complex containing a ditopic arylazo ligand

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Abstract

We describe the structural and magnetic properties of a tetranuclear [2 × 2] Co4 grid complex containing a ditopic arylazo ligand. At low temperatures and in solution the complex is comprised of Co3+ and singly reduced trianion-radical ligands. In the solid state we demonstrate the presence of valence tautomerization via variable temperature magnetic susceptibility experiments and powder-pattern EPR spectroscopy. Valence tautomerism in polynuclear complexes is very rare and to our knowledge is unprecedented in [2 × 2] grid complexes.

Graphical abstract: Valence tautomerism in a [2 × 2] Co4 grid complex containing a ditopic arylazo ligand

Supplementary files

Article information


Submitted
14 Apr 2021
Accepted
22 May 2021
First published
24 May 2021

Chem. Commun., 2021,57, 6213-6216
Article type
Communication

Valence tautomerism in a [2 × 2] Co4 grid complex containing a ditopic arylazo ligand

N. M. Bonanno, Z. Watts, C. Mauws, B. O. Patrick, C. R. Wiebe, Y. Shibano, K. Sugisaki, H. Matsuoka, D. Shiomi, K. Sato, T. Takui and M. T. Lemaire, Chem. Commun., 2021, 57, 6213 DOI: 10.1039/D1CC01991K

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