A linear, monomeric copper(I) acetate derivative, bis[bis(phenanthroline)copper] bis(acetato)cuprate(1-) hydrogen bis(acetate). An effective catalyst for the decarboxylation of carboxylic acids
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The complex [Cu(phen)2]2[Cu(O2CCH3)2].(O2CCH3)2H, derived from the reaction of CuO2CCH3 with 1, 10-phenanthroline in dichloromethane, has been characterized by X-ray crystallography at 80 °C. The crystals are monoclinic, space group C2/c with unit cell dimensions a = 22.503 (11) Å, b = 14.066 (6) Å, c = 16.829 (11) Å, β = 112.44 (4)°, V = 4923 (5) Å3, Z = 4, and RF-6.52%. The compound is shown to have the above stoichiometry, containing a unique, linear, mononuclear copper(I) acetate anion. The monodentate coordination of the acetates results in Cu2-O1 and Cu2-O1a distances (2.808 Å) which are significantly greater than those observed for the corresponding bonding interactions between Cu2-O2 and Cu2-O2a (1.821 (8) Å). The title complex was observed to be an extremely effective catalyst or catalyst precursor for the homogeneous decarboxylation of the carboxylic acids cyanoacetic and 9-fluorenecarboxylic acids. © 1992, American Chemical Society. All rights reserved.
author list (cited authors)
Darensbourg, D. J., Longridge, E. M., Atnip, E. V., & Reibenspies, J. H.