Molecular structure and catechol oxidase activity of a new copper(I) complex with sterically crowded monodentate N-donor ligand.
The attempted alkylation of 1,3-bis(2'-pyridylimino)isoindoline (indH) by the use of n-BuLi and subsequent alkyl halides led to quaternization of the pyridine nitrogens and the zwitterionic monodentate N-ligand (Me(2)ind)I was formed. By the use of the ligand the copper(I) complex [Cu(I)(Me(2)ind)I(2)] was prepared and its structure determined. It was found to be good catalyst for the oxidation of 3,5-di-tert-butylcatechol (DTBCH(2)) to 3,5-di-tert-butyl-1,2-benzoquinone (DTBQ) and H(2)O(2) by dioxygen. Detailed kinetic studies revealed first-order dependence on the catalyst and dioxygen concentration and saturation type behavior with respect to the substrate.
Kupán
Adám
A
Department of Chemistry, University of Pannonia, H-8200 Veszprém, Hungary.
Kaizer
József
J
Speier
Gábor
G
Giorgi
Michel
M
Réglier
Marius
M
Pollreisz
Ferenc
F
D016227:Benzoquinones / Q000737:chemistry*; D002384:Catalysis; D004156:Catechol Oxidase / Q000138:chemical synthesis / Q000737:chemistry*; D002396:Catechols / Q000737:chemistry*; D003300:Copper / Q000378:metabolism*; D006861:Hydrogen Peroxide / Q000737:chemistry; D007700:Kinetics; D008024:Ligands; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010084:Oxidation-Reduction
D016227:Benzoquinones; D002396:Catechols; D008024:Ligands; D009942:Organometallic Compounds; C539776:diiodo(1,3-bis(N-methyl-2'-pyridylimino)isoindoline)copper(I); C038096:tert-butylcatechol; C054466:3,5-di-tert-butyl-1,2-benzoquinone; D003300:Copper; D006861:Hydrogen Peroxide; D004156:Catechol Oxidase