| dc.contributor.author |
Ogunlusi, G.O. |
|
| dc.contributor.author |
Ige, J. |
|
| dc.contributor.author |
Oyetunji, O.A. |
|
| dc.contributor.author |
Ojo, J.F. |
|
| dc.date.accessioned |
2012-11-06T07:43:37Z |
|
| dc.date.available |
2012-11-06T07:43:37Z |
|
| dc.date.issued |
2009 |
|
| dc.identifier.citation |
Ogunlusi, G.O. et al. (2009) Intermediate and ion-pair formation in the outer-sphere reactions between azido-pentacyanocobaltate(III) and iron(II) polypyridyl complexes in aqueous medium, Transition Metal Chemistry, Vol. 34 No. 5, pp. 483–491 |
en_US |
| dc.identifier.issn |
0340-4285 (Print) |
|
| dc.identifier.issn |
1572-901X (Online) |
|
| dc.identifier.uri |
http://hdl.handle.net/10311/1035 |
|
| dc.description |
Symbols may not appear as they are in the original abstracts. |
en_US |
| dc.description.abstract |
The kinetics of the reactions between azidopentacyanocobaltate(III), Co(CN)5N3
3-, and iron(II) polypyridyl
complexes, Fe(LL)3
2? (LL = bipy, phen), have been studied in both neutral and acidic aqueous solutions at
I = 0.1 mol dm-3 NaCl. The reactions were carried out
under pseudo-first-order conditions in which the concentration
of Fe(LL)32+ was kept constant, and the second-order
rate constants obtained for the reactions at 35 C were within the range of 0.156–0.219 dm3 mol-1 s-1 for LL = bipy and 0.090–0.118 dm3 mol-1 s-1 for LL = phen.
Activation parameters were measured for these systems. The
dependence of reaction rates on acid was studied in the range
[H+] = 0.001–0.008 mol dm-3. The reaction in acid medium shows interesting kinetics. Two reactive species were identified in acid medium, namely, the protonated cobalt
complex and the azido-bridged binuclear complex. The electron-transfer process is proposed to go by mixed outerand
inner-sphere mechanisms in acid medium, in which
electron transfer through the bridged inner-sphere complex
(k5) is slower than through the outer-sphere path (k4). |
en_US |
| dc.language.iso |
en |
en_US |
| dc.publisher |
Springer Science+Business Media B.V., http://www.springer.com/chemistry/journal/11243 |
en_US |
| dc.subject |
Kinetics |
en_US |
| dc.subject |
Azidopentacyanocobaltate(III) |
en_US |
| dc.subject |
Iron(II) polypyridyl complexes |
en_US |
| dc.title |
Intermediate and ion-pair formation in the outer-sphere reactions between azido-pentacyanocobaltate(III) and iron(II) polypyridyl complexes in aqueous medium |
en_US |
| dc.type |
Published Article |
en_US |
| dc.link |
http://www.springerlink.com/content/h121m16l1127g185/fulltext.pdf |
en_US |