dc.contributor.author |
Bennett, Ross William |
|
dc.date.accessioned |
2011-03-16T23:41:36Z |
|
dc.date.accessioned |
2022-10-25T06:17:50Z |
|
dc.date.available |
2011-03-16T23:41:36Z |
|
dc.date.available |
2022-10-25T06:17:50Z |
|
dc.date.copyright |
1971 |
|
dc.date.issued |
1971 |
|
dc.identifier.uri |
https://ir.wgtn.ac.nz/handle/123456789/23402 |
|
dc.description.abstract |
Ester containing chloropentammine cobalt(III) complexes of the type cis-[Co(en)2(NH2(CH2)nCO2CH3)Cl]Cl2 (where n=2, 3 and 5) have been prepared, with the cis-configuration being assigned on the basis of spectral characteristics. Their base hydrolysis has been studied by pH-stat and spectrophotometrically at 25.0° and I=0.10M (KCl). Loss of co-ordinated chloride is faster than "dangling" ester hydrolysis by a factor which is dependent on the value of n. Both reactions independently follow the rate law v = k2[Complex][OH-] and lead to the formation of [Co(en)2(NH2(CH2)n CO2)OH]+. For the (β-alanine derivative (n=2), [Co(en)2(NH2(CH2)CO2)CH3)]3+ and [Co(en)2(NH2(CH2)2C02CH3)OH]2+ are produced following chloride loss, the former resulting in rapid ester hydrolysis and intramolecular hydrolysis by bound OH- partially occurring for the latter, both yielding [Co(en)2(NH2(CH2)2C02CH3)]2+. |
en_NZ |
dc.format |
pdf |
en_NZ |
dc.language |
en_NZ |
|
dc.language.iso |
en_NZ |
|
dc.publisher |
Te Herenga Waka—Victoria University of Wellington |
en_NZ |
dc.title |
The base hydrolysis of homologous amino acid esters co-ordinated to cobalt (III). kinetics and product analysis |
en_NZ |
dc.type |
Text |
en_NZ |
vuwschema.type.vuw |
Awarded Research Masters Thesis |
en_NZ |
thesis.degree.discipline |
Chemistry |
en_NZ |
thesis.degree.grantor |
Te Herenga Waka—Victoria University of Wellington |
en_NZ |
thesis.degree.level |
Masters |
en_NZ |
thesis.degree.name |
Master of Arts |
en_NZ |