双核钴卟啉/DMF体系的吸氧热力学研究

被引:3
作者
周晓海
张绍辉
黄素秋
屈松生
机构
[1] 武汉大学化学系!武汉,武汉大学化学系!武汉,武汉大学化学系!武汉,武汉大学化学系!武汉
基金
高等学校博士学科点专项科研基金;
关键词
双核钴卟啉; 双氧配合物; 吸氧热力学; DMF(N,N-二甲基甲酰胺);
D O I
暂无
中图分类号
O642 [化学热力学、热化学、热力学平衡];
学科分类号
070304 ; 081704 ;
摘要
This paper reports the thermodynamics of reversible oxygen binding to a dicobalt di(meso-tetraphenylporphyrin) linked by a diamido- aliphatic chain in N, Ndimethylformamide solution. Thermodynamic values(standard state 101325 Pa O2): △G (298K)=-3.1kJ mol-1, △H (298K)=-37.1kJ·mol-1, △S (298K)=-114 J.mol-1K-1,Co:O2=1:1. The ESR parameters of the dioxygen complex in DMF at 133K are as follows: g=2.000, g=2.046, A= 15G, A =22G, The pressure of dioxygen necessary for half-oxygenation of the system (P1/2 =42.7kPa at 288K) is comparable with that for cobalt substituted human hemoglobin at T state.
引用
收藏
页码:391 / 395
页数:5
相关论文
共 7 条
[1]  
Walker F A,J. Journal of the American Chemical Society . 1970
[2]  
Jones R D,Summerville D A,Basolo F. Chemical Reviews . 1979
[3]  
Carter M J,Rillema D P,Basolo F.J. Journal of the American Chemical Society . 1974
[4]  
Collman J P Brauman JI,Doxsee K M,et al. Journal of the American Chemical Society . 1978
[5]  
Niederhoffer E C,Timmons J H Martell A E. Chemical Reviews . 1984
[6]  
Chang C K,J. C.S Chem. Comm . 1977
[7]  
Mest Y L.l’Her M.Courtot-Coupez J,et al. J C.S Chem.Commun . 1983