Electron transfer at tetrahedral cobalt(II). Part 1. Kinetics of bromate ion reduction |
| |
Authors: | Godwin Adefikayo Ayoko Johnson Femi Iyun Ibrahim Faskari El-Idris |
| |
Institution: | (1) Department of Chemistry, Ahmadu Bello University, Zaria, Nigeria |
| |
Abstract: | Summary The bromate ion reduction by 12-tungstocobaltate(II) anion has been investigated. The reaction obeys the empirical rate law:-dreductant]/dt=5(a+bH+]2)BrO
3
–
]reductant]: where a=(2.49±0.18)×10–4M–1 s–1, b=(4.65±0.20)×10–5M–3s–1 at 24.5±0.1°C H+]=0.05–1.50M and I=2.0M (NaClO4). This rate law is interpreted in terms of parallel reactions of BrO
3
–
and H2BrO
3
+
. On the basis of the observed anion catalysis, substitution intertness of the reductant and Marcus type linear free energy relations, the outer sphere mechanism is proposed for both pathways. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|