Effect of DNA on the rate of electron transfer reactions between non-intercalated reactants:: kinetic study of the reactions [Ru(NH3)5pz]2++[Co(C2O4)3]3- and [Ru(NH3)5py]2++[Co(NH3)4pzCO2]2+ in aqueous solutions in the presence of DNA

被引：25
|
作者：
Secco, F
Venturini, M
López, M
Pérez, P
Prado, R
Sánchez, F
机构：
[1] Univ Seville, Fac Quim, Dept Quim Fis, Seville 41012, Spain
[2] Univ Pisa, Dipartimento Chim & Chim Ind, I-56126 Pisa, Italy
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2001年 / 3卷 / 19期
关键词：
D O I：
10.1039/b103549p
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The kinetics of the electron transfer reactions between pentaammine(pyrazine)ruthenium(II), [Ru(NH3)(5)pz](2+) and tris(oxalate)cobalt(III), [Co(C2O4)(3)](3-) and pentaammine(pyridine)ruthenium(II), [Ru(NH3)(5)py](2+) and tetraammine(pyrazinecarboxylate)cobalt(III), [Co(NH3)(4)pzCO(2)](2+) have been studied in aqueous solutions of DNA over the concentration ranges 0 to 2.46 x 10(-3) mol dm(-3) and 1.23 x 10(-4) to 1.00 x 10(-3) mol dm(-3), respectively. The results are interpreted on the basis of a modified pseudophase model which takes into account the anticooperative character of the binding of the cationic reactants to DNA.
引用
收藏
页码：4412 / 4417
页数：6
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