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http://nopr.niscpr.res.in/handle/123456789/21096| Title: | Kinetic and equilibrium studies of the acid dissociation of the zinc(II) complexes of N,N' -dialkyl-1, 10-phenanthroline-2,9-dimethanamine ligands |
| Authors: | Sun, Hongwei Lin, Huakuan Zhou, Zhifen Zhao, Guanghua Zhu, Shourong Su, Xuncheng Chen, Yunti |
| Issue Date: | Apr-2000 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The complexation property and the acid dissociation kinetics of the zinc(II) complexes of N,N' -dialkyl-1, 10-phenanthroline-2,9-dimethanamine ligands have been studied using pH-metric and a stopped-flow spectrophotometer. In 3.3×10-3 ~1.2×10-2 mol dm-3 HCl (I=0.5 mol dm-3, HCl + NaCl), the dissociation rate follows the law kobs= kK'[H+]. The acid dissociation can be rationalized in terms of four-step kinetic process involving two rapid pre-equilibrium protonations and rate-determining cleavage of the Zn(II)-N(phenanthroline) bond. Steric effects on the stability of complexes and on the kinetic process have also been discussed. |
| Page(s): | 430-433 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.39A(04) [April 2000] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 39A(4) 430-433.pdf | 822.97 kB | Adobe PDF | View/Open |
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