&amp;#963;-Bonded p-Dioxolene Transition Metal Complexes

Keramidas, Anastasios D.; Drouza, Chryssoula; Stylianou, Marinos

doi:10.5772/29070

Current Trends in X-Ray Crystallography 2011

DOI: 10.5772/29070

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σ-Bonded p-Dioxolene Transition Metal Complexes

Anastasios D. Keramidas¹,

Chryssoula Drouza²,

Marinos Stylianou³

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2017

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Synthesis of new photosensitive H₂BBQ²⁺[ZnCl₄]²⁻/[(ZnCl)₂(μ-BBH)] complexes, through selective oxidation of H₂O to H₂O₂

et al. 2017

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A new two-electron photosensitizer, HBBQ[ZnCl]/[(ZnCl)(μ-BBH)] (BBQ stands for 2,5-bis[bis(pyridin-2-ylmethyl)amino]-1,4-quinone and BBH stands for 2,5-bis[bis(pyridin-2-ylmethyl)amino]-1,4-hydroquinone), has been synthesized and the oxidation state of the ligand was determined by X-ray crystallography and NMR spectroscopy. Under light illumination the HBBQ[ZnCl] + ZnCl is reduced quantitatively to [(ZnCl)(μ-BBH)] (pH ∼ 5) oxidizing HO to HO as is evident by trap experiments. Electrochemistry gave a reversible two-electron ligand-centered redox wave for [(ZnCl)(μ-BBH)]. UV-Vis, luminescence and EPR spectroscopies reveal the slow formation of a stable quinone diradical, intermediate of the reaction. DFT calculations are in agreement with the proposed mechanism. Based on this property an aqueous {[(ZnCl)(μ-BBH)]||HO} solar rechargeable galvanic cell has been constructed.

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Synthesis of new photosensitive H₂BBQ²⁺[ZnCl₄]²⁻/[(ZnCl)₂(μ-BBH)] complexes, through selective oxidation of H₂O to H₂O₂

et al. 2017

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show abstract

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σ-Bonded p-Dioxolene Transition Metal Complexes

Cited by 1 publication

References 56 publications

Synthesis of new photosensitive H₂BBQ²⁺[ZnCl₄]²⁻/[(ZnCl)₂(μ-BBH)] complexes, through selective oxidation of H₂O to H₂O₂

Synthesis of new photosensitive H₂BBQ²⁺[ZnCl₄]²⁻/[(ZnCl)₂(μ-BBH)] complexes, through selective oxidation of H₂O to H₂O₂

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&#963;-Bonded p-Dioxolene Transition Metal Complexes

Cited by 1 publication

References 56 publications

Synthesis of new photosensitive H2BBQ2+[ZnCl4]2−/[(ZnCl)2(μ-BBH)] complexes, through selective oxidation of H2O to H2O2

Synthesis of new photosensitive H2BBQ2+[ZnCl4]2−/[(ZnCl)2(μ-BBH)] complexes, through selective oxidation of H2O to H2O2

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σ-Bonded p-Dioxolene Transition Metal Complexes

Synthesis of new photosensitive H₂BBQ²⁺[ZnCl₄]²⁻/[(ZnCl)₂(μ-BBH)] complexes, through selective oxidation of H₂O to H₂O₂

Synthesis of new photosensitive H₂BBQ²⁺[ZnCl₄]²⁻/[(ZnCl)₂(μ-BBH)] complexes, through selective oxidation of H₂O to H₂O₂