Cadmium Complexes—A Novel Family in the Coordination Chemistry of 1,2-bis(arylimino)acenaphthenes

Cadmium Complexes—A Novel Family in the Coordination Chemistry of 1,2-bis(arylimino)acenaphthenes

This work presents the synthesis routes for the first representatives of cadmium complexes based on 1,2-bis(arylimino)acenaphthene (Ar-bian). The reaction of CdCl<sub>2</sub> with bis-(2,4,6-trimethylphenylimino)acenaphthene (tmp-bian) in a 1-to-1 molar ratio led to a dimeric complex [Cd...

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Main Authors: Egor V. Chekhov, Ivan V. Bakaev, Alisa K. Gukova, Nikolay O. Shaposhnikov, Veronika I. Komlyagina, Saltanat Appazova, Banu Diyarova, Klara Darmagambet, Nurbol Appazov, Nikolai F. Romashev, Artem L. Gushchin
Format: Article
Language:English
Published: MDPI AG 2025-05-01
Series:Inorganics
Subjects:
cadmium
complexes
BIAN ligands
X-ray diffraction
crystal structure
cyclic voltammetry
Online Access:https://www.mdpi.com/2304-6740/13/5/145
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Summary:This work presents the synthesis routes for the first representatives of cadmium complexes based on 1,2-bis(arylimino)acenaphthene (Ar-bian). The reaction of CdCl<sub>2</sub> with bis-(2,4,6-trimethylphenylimino)acenaphthene (tmp-bian) in a 1-to-1 molar ratio led to a dimeric complex [Cd<sub>2</sub>(tmp-bian)<sub>2</sub>Cl<sub>2</sub>(µ-Cl)<sub>2</sub>] (<b>1</b>). Further treatment of complex <b>1</b> with silver triflate as a chloride-eliminating agent, followed by the addition of one equivalent of tmp-bian, resulted in the formation of a mixture consisting of [Cd<sub>2</sub>(tmp-bian)<sub>2</sub>(H<sub>2</sub>O)<sub>4</sub>(µ-Cl)<sub>2</sub>](OTf)<sub>2</sub> (<b>2</b>) and [Cd(tmp-bian)<sub>2</sub>(OTf)<sub>2</sub>] (<b>3</b>). To obtain complex <b>3</b> in its individual form, a reaction of Cd(OTf)<sub>2</sub> with two equivalents of tmp-bian was carried out. The characterization of the complexes was conducted through a range of analytical methods, including X-ray diffraction analysis, elemental analysis, as well as IR and <sup>1</sup>H NMR-spectroscopies. Redox properties of <b>1</b> and <b>3</b> were investigated by means of cyclic voltammetry. Cyclic voltammograms revealed irreversible reduction processes centered on the tmp-bian ligand, which were confirmed by quantum chemical calculations.
ISSN:2304-6740

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