p-Hydroquinone–metal compounds: synthesis and crystal structure of two novel VV–p-hydroquinonate and VIV–p-semiquinonate species

Chryssoula Drouza; Vagelis Tolis; Volker Gramlich; Cathrine Raptopoulou; Aris Terzis; Michael P. Sigalas; Themistoklis A. Kabanos; Anastasios D. Keramidas

doi:10.1039/B207330G

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p-Hydroquinone–metal compounds: synthesis and crystal structure of two novel V^V–p-hydroquinonate and V^IV–p-semiquinonate species†

Chryssoula Drouza,^a Vagelis Tolis,^b Volker Gramlich,^d Cathrine Raptopoulou,^e Aris Terzis,^e Michael P. Sigalas,*^c Themistoklis A. Kabanos*^b and Anastasios D. Keramidas*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, University of Cyprus, Nicosia, Cyprus
E-mail: akeramid@ucy.ac.cy

^b Department of Chemistry, Section of Inorganic and Analytical Chemistry, University of Ioannina, Ioannina, Greece
E-mail: tkampano@cc.uoi.gr

^c Department of Chemistry, Laboratory of Applied Quantum Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
E-mail: sigalas@chem.auth.gr

^d Laboratory of Crystallography, Zurich, Switzerland
E-mail: V.Gramlich@kristall.erdw.ethz.ch

^e NRPCS Demokritos, Institute of Material Science, Aghia Paraskevi Attikis, Greece
E-mail: craptop@ims.demokritos.gr

Abstract

Reaction of the p-hydroquinone derivative H₂Na₄bicah·4H₂O with either V^IVOSO₄·3H₂O and NaV^VO₃ in equivalent quantities or with NaV^VO₃ yields the tetranuclear V^IVO²⁺ macrocycle–semiquinonate compound Na₆{(V^IVO)₄(μ₂-O)₂[μ₂-bicas·(−5)-N,O,O,O]₂}·Na₂SO₄·20H₂O (1·Na₂SO₄·20H₂O) and the dinuclear cis-V^VO₂⁺–hydroquinone species Na₄{(V^VO₂)₂[μ₂-bicah(−6)-N,O,O,O]}·11H₂O (2·11H₂O) respectively. Compounds 1·Na₂SO₄·20H₂O and 2·11H₂O were characterized by X-ray structure analysis and ab initio calculations.

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Article information

DOI: https://doi.org/10.1039/B207330G
Article type: Communication
Submitted: 25 Jul 2002
Accepted: 01 Oct 2002

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Chem. Commun., 2002, 2786-2787

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p-Hydroquinone–metal compounds: synthesis and crystal structure of two novel V^V–p-hydroquinonate and V^IV–p-semiquinonate species

C. Drouza, V. Tolis, V. Gramlich, C. Raptopoulou, A. Terzis, M. P. Sigalas, T. A. Kabanos and A. D. Keramidas, Chem. Commun., 2002, 2786 DOI: 10.1039/B207330G

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