Abstract
Reactions of copper(II) carboxylates with dibenzyl ether (DBE) gave binuclear complexes of the formula Cu2(μ-OOCR)4(DBE)2 (R = But, Ph, and CF3). The complexes were characterized by X-ray diffraction. The axial positions in the lantern-type dimer are occupied by the coordinated DBE molecules. The complexes seem to be analogs of intermediate catalysts for the oxidation of DBE with atmospheric oxygen in the presence of transition metal complexes. When stored in air, the complex Cu2(μ-OOCPh)4(DBE)2 underwent oxidation into Cu2(μ-OOCPh)4(HOOCPh)2, which was characterized by X-ray diffraction. The geometry of its framework is similar; the structure is stabilized by intramolecular H bonds between the axially oriented benzoic acid molecules and the adjacent bridging benzoate anions.
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Dedicated to Professor Vladimir Fedorov on the occasion of his 75th birthday
Original Russian Text © S.E. Nefedov, E.V. Kushan, M.A. Yakovleva, D.G. Chikhichin, V.A. Kotseruba, O.A. Levchenko, G.L. Kamalov, 2012, published in Koordinatsionnaya Khimiya, 2012, Vol. 38, No. 3, pp. 233–240.
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Nefedov, S.E., Kushan, E.V., Yakovleva, M.A. et al. Binuclear complexes with the “Chinese Lantern” geometry as intermediates in the liquid-phase oxidation of dibenzyl ether with atmospheric oxygen in the presence of copper(II) carboxylates. Russ J Coord Chem 38, 224–231 (2012). https://doi.org/10.1134/S1070328412030086
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DOI: https://doi.org/10.1134/S1070328412030086