Kinetics and mechanism of exchange reaction of [Y(APTA)] (APTA=o-aminophenol-N,N, O-triacetic acid) with copper(II) |
| |
Authors: | Zhang Hualin Li Peiyi |
| |
Institution: | (1) Department of Chemistry, Fudan University, Shanghai, China |
| |
Abstract: | Summary The kinetics of the exchange reaction between Y(APTA)] and CuII have been investigated over a range of H+] from 2.5×10–5 to 7.5×10–4 mol dm–3 at 30°C and ionic strength 0.2 mol dm–3 KNO3. The results show that the exchange reaction proceeds via both self-and proton-catalyzed dissociation of Y(APTA)] and also by the direct attack of CuII on Y(APTA)]. The corresponding rate constants kd, k
h
and kCu have been evaluated as 6.3s–1, 8.4×104 mol–1 dm3 s–1 and 416mol–3 dm3 s–1 respectively. The possible intermediates are discussed in terms of the structure of APTA. The complex-formation rate constants of YIII with APTA3- and HAPTA2- were also obtained. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|