@article { ISI:000378725800123, title = {Catecholase and phenoxazinone synthase activities of a ferromagnetically coupled tetranuclear Cu(II) complex}, journal = {RSC Advances}, volume = {6}, number = {63}, year = {2016}, month = {JUN}, pages = {58831-58838}, publisher = {ROYAL SOC CHEMISTRY}, address = {THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND}, abstract = {

A crystallographically characterized tetranuclear Cu(II) complex [Cu-4(II)(L)(4)] (1) [H2L = N-(2-hydroxyethyl)-3-methoxysalicylaldimine] is found to show overall ferromagnetic exchange coupling. Complex (1) mimics the catalytic activity of the plant enzyme catechol oxidase by oxidising 3,5-di-tert-butylcatechol to its corresponding quinone in methanol and dichloromethane medium in the presence of aerial oxygen. The reaction follows Michaelis-Menten enzymatic reaction kinetics with turnover numbers (K-cat) 6.99 x 10(3) and 1.85 x 10(3) h(-1) in methanol and dichloromethane, respectively. 1 is also phenoxazinone synthase active in methanol medium with a turnover number of 1.21 x 10(5) h(-1).

}, issn = {2046-2069}, doi = {10.1039/c6ra11433d}, author = {Mitra, Merry and Kundu, Tanay and Kaur, Gurpreet and Sharma, Gyaneswar and Choudhury, Angshuman Roy and Singh, Yogesh and Ghosh, Rajarshi} }