A Trinuclear Co(II) Complex Based on the Tris-Dioxolene Triphenylene Non-Innocent Bridge: Complementary Redox, Magnetic Behavior and Theoretical Calculations

A trinuclear Co(II)-containing complex was assembled using the non-innocent hexahydroxytriphenylene bridging ligand. Cyclovoltammetry and spectroelectrochemistry studies revealed that the central ligand sustained four reversible redox events, leading to different species with diverse optical behavior. Complementary analysis of the molecular structure confirmed by ab initio theoretical calculations were consistent with the bridge in the tris-semiquinone (sq) state for the trinuclear complex. The exchange coupling among the electrons of the bridge resulted in a spin doublet (s = ½) localized close to one of the three Co2+ ions, as suggested by the experimental magnetic data. The central doublet underwent one large antiferromagnetic exchange coupling with one Co(II) and almost no coupling with the two other metal ions.

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Publication Details

Journal
Magnetochemistry
Published
2024-12-11
DOI
https://doi.org/10.3390/magnetochemistry10120102
Citations
2
Primary Topic
Magnetism in coordination complexes
Type
article
Field-Weighted Citation Impact
0.24

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article

A Trinuclear Co(II) Complex Based on the Tris-Dioxolene Triphenylene Non-Innocent Bridge: Complementary Redox, Magnetic Behavior and Theoretical Calculations

Nathalie Bridonneau, Nicolas Suaud, François Lambert, Talal Mallah et al.
2 citations
Magnetochemistry
Magnetism in coordination complexes
0.24
article

A Trinuclear Co(II) Complex Based on the Tris-Dioxolene Triphenylene Non-Innocent Bridge: Complementary Redox, Magnetic Behavior and Theoretical Calculations

Nathalie Bridonneau, Nicolas Suaud, François Lambert, Talal Mallah, Nathalie Guihéry, Éric Rivière, Shin‐ichi Ohkoshi, Zakaria Halime, Régis Guillot, Yi‐Ting Wang, Aristide Colin
article en
2 citations

Abstract

A trinuclear Co(II)-containing complex was assembled using the non-innocent hexahydroxytriphenylene bridging ligand. Cyclovoltammetry and spectroelectrochemistry studies revealed that the central ligand sustained four reversible redox events, leading to different species with diverse optical behavior. Complementary analysis of the molecular structure confirmed by ab initio theoretical calculations were consistent with the bridge in the tris-semiquinone (sq) state for the trinuclear complex. The exchange coupling among the electrons of the bridge resulted in a spin doublet (s = ½) localized close to one of the three Co2+ ions, as suggested by the experimental magnetic data. The central doublet underwent one large antiferromagnetic exchange coupling with one Co(II) and almost no coupling with the two other metal ions.

MagnetochemistryVol. 10(12)
Centre National de la Recherche Scientifique (FR), Université Fédérale de Toulouse Midi-Pyrénées (FR), Université Paris-Saclay (FR), Laboratoire de Chimie et Physique Quantiques (FR), Institut de Chimie Moléculaire et des Matériaux d'Orsay (FR), The University of Tokyo (JP)
Agence Nationale de la Recherche, Centre National de la Recherche Scientifique, Japan Society for the Promotion of Science
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Openalex Percentile: Top 56%
Magnetism in coordination complexes
0.24
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