Novel Dinuclear Redox-isomeric Complexes with a Tetrapodal Pyridine-based Ligand

Bubnov MP, Skorodumova NA, Zolotukhin AA, Arapova AV, Baranov EV, Stritt A, Uenal A, Grohmann A, Heinemann FW, Bogomyakov AS, Smirnova NN, Cherkasov VK, Abakumov GA (2014)

Publication Status: Published

Publication Type: Journal article

Publication year: 2014

Journal

Zeitschrift für Anorganische und Allgemeine Chemie Wiley

Publisher: WILEY-V C H VERLAG GMBH

Book Volume: 640

Pages Range: 2177-2182

Journal Issue: 11

DOI: 10.1002/zaac.201400242

Abstract

Tris-o-semiquinonato cobalt complexes react with a tetrapodal pyridine-derived ligand to form dinuclear cobalt compounds of general formula (OMP)[CoQ(2)](2), where OMP = 2,2-(pyridine-2,6-diyl)bis(N-1,N-1,N-3,N-3-tetramethylpropane-1,3-diamine), Q = mono- or dianion of 3,6-di-tert-butyl-o-benzoquinone (complex 1) and it derivatives: 3,6-di-tert-butyl-4,5-N,N-piperazino-o-benzoquinone (complex 2), and 3,6-di-tert-butyl-4-Cl-o-benzoquinone (complex 3). Single crystal X-ray crystallography of 1 and 3 indicates two bis-quinonato cobalt units bound by an OMP ligand, which acts as a bridge. Each central cobalt atom is chelated by one N-1,N-1,N-3,N-3-tetramethylpropane-1,3-diamine and two o-quinonato fragments. The nitrogen atom of the pyridine ring is uncoordinated. All complexes were characterized by NIR-IR and EPR spectroscopy, precise adiabatic vacuum calorimetry, and by variable-temperature magnetic susceptibility measurements. All data indicate a reversible thermally driven redox-isomeric (valence tautomeric) transformation in the solid state for all complexes.

Authors with CRIS profile

Frank Wilhelm Heinemann Lehrstuhl für Anorganische und Allgemeine Chemie

Involved external institutions

Russian Academy of Sciences / Росси́йская акаде́мия нау́к (RAS) RU Russian Federation (RU) Technische Universität Berlin DE Germany (DE) Lobachevsky State University of Nizhni Novgorod RU Russian Federation (RU)

How to cite

APA:

Bubnov, M.P., Skorodumova, N.A., Zolotukhin, A.A., Arapova, A.V., Baranov, E.V., Stritt, A.,... Abakumov, G.A. (2014). Novel Dinuclear Redox-isomeric Complexes with a Tetrapodal Pyridine-based Ligand. Zeitschrift für Anorganische und Allgemeine Chemie, 640(11), 2177-2182. https://doi.org/10.1002/zaac.201400242

MLA:

Bubnov, Michael P., et al. "Novel Dinuclear Redox-isomeric Complexes with a Tetrapodal Pyridine-based Ligand." Zeitschrift für Anorganische und Allgemeine Chemie 640.11 (2014): 2177-2182.

BibTeX: Download