Acta Chimica Sinica ›› 1992, Vol. 50 ›› Issue (6): 578-582. Previous Articles     Next Articles

Original Articles

超氧化物岐化酶的模拟: 大环双核铜(II)配合物中咪唑桥的稳定性

彭庆云;陆勤;罗勤慧;戴安邦   

  1. 南京大学配位化学研究所
  • 发布日期:1992-06-15

Simulation of superoxide dismutase: Stability of imidazolate bridge in macrocyclic dicopper(II)complex

PENG QINGYUN;LU QIN;LUO QINHUI;DAI ANBANG   

  • Published:1992-06-15

The 24-membered ring ligand (L) by condensation of 2,6-diacetylpyridine with 3-oxopentane-1,5-diamine and [Cu2L(IM)](ClO4)3 (HIM = imidazole) were prepared The stability of bridge in complex was studied by EPR and pH titration The bridging group is stable at pH 5.6-10.3 in mixed solvent and at pH 7.5-10.45 in aqueous solution In pH >10, OH- substitutes IM-. The IM- bridge is stable in wide pH region due to macrocyclic effect.

Key words: STABILITY, PYRIDINE P, COPPER COMPLEX, MACROCYCLIC COMPOUNDS, DINUCLEAR COMPLEX, ENZYME SIMULATION, SUPEROXIDE

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