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Copper(II) coordination polymers derived from triethanolamine and pyromellitic acid for bioinspired mild peroxidative oxidation of cyclohexane.

Karabach YY, Kirillov AM, Haukka M, Kopylovich MN, Pombeiro AJ

Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, TU Lisbon, Avenue Rovisco Pais, 1049-001 Lisbon, Portugal.

The new inorganic 1D coordination polymer [Cu(2)(H(3)tea)(2)(mu(4)-pma)](n) has been prepared, via self-assembly in aqueous medium, from copper(II) nitrate, triethanolamine (H(3)tea), pyromellitic acid (H(4)pma) and lithium hydroxide, and characterized by IR spectroscopy, elemental and single-crystal X-ray diffraction analyses. This compound and the related 2D polymer [Cu(2)(mu-H(2)tea)(2){mu(3)-Na(2)(H(2)O)(4)}(mu(6)-pma)](n).10nH(2)O are shown to mimic the alkane partial oxidation activity of the multicopper particulate methane monooxygenase, acting as catalysts precursors for the peroxidative oxidation of cyclohexane into cyclohexanol and cyclohexanone, by hydrogen peroxide (as green oxidant) and at room temperature in acidic MeCN/H(2)O medium. An overall yield (based on cyclohexane) of 29% has been achieved.

Published 21 April 2008 in J Inorg Biochem, 102(5): 1190-4.
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