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Updated: May 11, 2026

Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
Redox-active behavior of the [{Ti(η(5)-C5Me5)(μ-NH)}3(μ3-N)] metalloligand
Jorge Caballo1, Jorge J Carbó, Miguel Mena
1Departamento de Química Inorgánica, Universidad de Alcalá, 28871 Alcalá de Henares-Madrid, Spain.
Abstract:
Treatment of [Cl3Y{(μ3-NH)3Ti3(η(5)-C5Me5)3(μ3-N)}] with [K(C5Me5)] in toluene gives C10Me10 and the paramagnetic [K(μ-Cl)3Y{(μ3-NH)3Ti3(η(5)-C5Me5)3(μ3-N)}] (3) derivative. Crystallization of 3 in pyridine affords the potassium-free [Cl2(py)2Y{(μ3-NH)3Ti3(η(5)-C5Me5)3(μ3-N)}] (4) complex. Whereas the reaction of 3 with 1 equiv of 18-crown-6 leads to the molecular complex [(18-crown-6)K(μ-Cl)3Y{(μ3-NH)3Ti3(η(5)-C5Me5)3(μ3-N)}] (5), the analogous treatment of 3 with cryptand-222 affords the ion pair [K(crypt-222)][Cl3Y{(μ3-NH)3Ti3(η(5)-C5Me5)3(μ3-N)}] (6). The X-ray crystal structures of 4, 5, and 6 have been determined. Density functional theory (DFT) calculations have elucidated the electronic structure of these species, which should be regarded as containing trivalent Y bonded to the {(μ3-NH)3Ti3(η(5)-C5Me5)3(μ3-N)} metalloligand radical anion.
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