- 作者: Mei-Ling Chen and Andrew Yeh
- 作者服務機構: Department of Chemistry, Tunghai Christian University, Taichung, Taiwan, R.O.C.
- 中文摘要: Fe(CN)5ampy3- (ampy = 4-aminopyridine) complex was unstable at pH £ 4 with respect to the dissociation due to the protonations of the complex. The first protonation on the 4-aminopyridine ligand at pKa = 3.2 resulted in a @ 150-fold increase in rate of dissociation as compared to that of the complex in the neutral solution. However, further protonation of the complex on the cyanide ligand at pKa = 1.5 increased the rate only slightly. The large increase in the rate constant of dissociation for Fe(CN)5ampyH2- complex suggests that in the transition state the proton is likely shifted from the amino group and becomes coordinated to a pair of dp electrons directed at the face of the coordinated octahedron.
- 英文摘要: --
- 中文關鍵字: --
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