Countercations and Solvent Influence CO.sub.2 Reduction to Oxalate by Chalcogen-Bridged Tricopper Cyclophanates

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From: Journal of the American Chemical Society(Vol. 140, Issue 17)
Publisher: American Chemical Society
Document Type: Report
Length: 67 words

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Abstract :

One-electron reduction of Cu3EL (L3- = tris(?-diketiminate)cyclophane, and E = S, Se) affords [Cu3EL]?, which reacts with CO2 to yield exclusively C2O42- (95% yield, TON = 24) and regenerate Cu3EL. Stopped-flow UV/visible data support an A?B mechanism under pseudo-first-order conditions, which is 106 larger than those for reported copper complexes. The results suggest a mechanism in which cations and solvent influence the stability of the transition state.

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Gale Document Number: GALE|A541598151