Studies of Catecholase-like Model Copper( II ) Complexes

• Main Authors: Sheng-Chuan Cheng, 鄭勝權
• Other Authors: Ho-Hsiang Wei
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/38523503391867508457

碩士 === 淡江大學 === 化學學系 === 88 === Title of Thesis: Studies of Catecholase-like Model Copper( II ) Complexes Key word: Copper(II) complex,Magnetic properties, Catecholase-like Name of Institute:Graduate Institute of Chemistry Tamkang University Graduate date: June, 2000 Degree conferred: Master Name of student: Sheng-Chuan Cheng Advisor:Dr. Ho-Hsiang Wei 鄭 勝 權 Abstract: This thesis essentially has been separated into two parts : Ⅰ. The synthesis of dinuclear copper(II) complexes and the correlation between their structures and magneticbehavior；Ⅱ.The reactive activities of catecholase-like.Part Ⅰ.: The simplified formula for dinuclear copper(II) complexes are represented as follows: 1.{Cu2[-C5H4NCH2O]2(NCS)2} 2.{Cu2[-C5H3CH3NCH2O]2(CH3COO)2}．2H2O 3.{Cu2[-C5H4NCH2CH2O]2(NCO)2} 4.{Cu2[-(CH3)2NC(CH3)2CH2O]2(NCS)2} 5.{Cu2[-(CH3)2NCH2CH(CH3)O]2(NCS)2} 6.{Cu2[-(CH3)2NC(CH3)2CH2O]2(Cl)2} The theoretical fitting has been simulated to obtain the values of exchange integral 2J by using Bleaney-Blowers equation. The magnetic behaviors of these dinuclear copper(II) complexes all show antiferromagnetic interaction. Part Ⅱ.:Reactive activities of catecholase-like studies Dinuclear copper(II) complexes were found to be readily reduced to copper(Ⅰ) complexes by 3,5-di-tert-butylcatechol(dtbc). The reaction of copper(II) complexes in MeOH has been studied. The dtbc has been oxidized to quinone, and characetrized by absorption band at 400nm of UV-visible spectra. The reactive activity of these oxo-bridged catecholase-like reactions is correlated to the Cu-Cu distances in the complexes. Temperature dependence of magnetic susceptibility and Mőssbauer measurements for these complexes revealed that the style of spin transition s=5/2 ↔ s=1/2 of Iron(Ⅲ ) atom in complexes is dependent on the chemical enviromment. All these form complexe 1-4 exhihit catalase- like activity toward H2O2 disproportionation.