Coordination Polymer or Cluster: Zinc Bis(3,5-di-tert-octyl-semiquinolate) with Pyrazine

New zinc bis- o- semiquinolate complexes based on 3,5-di- tert -octyl- o -benzoquinone bearing the N-donor ligand (pyrazine) coordinated to the metal are synthesized. Two different products can be obtained depending on the synthesis method: coordination polymer (direct oxidation of metallic zinc wit...

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Bibliographic Details
Published in:Russian journal of coordination chemistry 2023-11, Vol.49 (11), p.718-729
Main Authors: Maleeva, A. V., Trofimova, O. Yu, Kocherova, T. N., Yakushev, I. A., Bogomyakov, A. S., Piskunov, A. V.
Format: Article
Language:English
Subjects:
Antiferromagnetism
Benzoquinone
Chemical synthesis
Chemistry
Chemistry and Materials Science
Clusters
Coordination polymers
Inorganic Chemistry
Oxidation
Physical Chemistry
Quinones
Zinc
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Summary:New zinc bis- o- semiquinolate complexes based on 3,5-di- tert -octyl- o -benzoquinone bearing the N-donor ligand (pyrazine) coordinated to the metal are synthesized. Two different products can be obtained depending on the synthesis method: coordination polymer (direct oxidation of metallic zinc with o- quinone (CIF file CCDC no. 2250574 ( I )) or polynuclear cluster (exchange reaction (CIF file CCDC no. 2250575 ( II )). The coordination polymer is linear and free of intermolecular π,π interactions between the aromatic fragments of the adjacent molecules. The magnetochemical study of complexes I and II shows that intramolecular antiferromagnetic exchange interactions between spins of the o- semiquinolate radical centers dominate.
ISSN:1070-3284
1608-3318
DOI:10.1134/S1070328423600742