Catecholase and phenoxazinone synthase activities of a ferromagnetically coupled tetranuclear Cu(ii) complex. Issue 63 (21st June 2016)

• Record Type: Journal Article
• Authors: Mitra, Merry; Kundu, Tanay; Kaur, Gurpreet; Sharma, Gyaneswar; Choudhury, Angshuman Roy; Singh, Yogesh; Ghosh, Rajarshi
• Is Part Of: RSC advances. Volume 6:Issue 63(2016)
• Page Start: 58831
• Page End: 58838
• Publication Date: 2016-06-21
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra11433d
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A crystallographically characterized tetranuclear Cu(ii ) complex [CuII4(L)4 ] (1 ) [H2 L = N -(2-hydroxyethyl)-3-methoxysalicylaldimine] is found to show overall ferromagnetic exchange coupling. Abstract : A crystallographically characterized tetranuclear Cu(ii ) complex [CuII4(L)4 ] (1 ) [H2 L = 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 × 10 3 and 1.85 × 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 × 10 5 h −1 .