Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Structural and kinetic studies on uranyl(V) carbonate complex using C-13 NMR spectroscopy
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Inorganic Chemistry.
2005 (English)In: Inorganic Chemistry, ISSN 0020-1669, E-ISSN 1520-510X, Vol. 44, no 13, 4472-4474 p.Article in journal (Refereed) Published
Abstract [en]

We have measured C-13 NMR spectra of uranyl(V) carbonate complex in D2O solution containing 1.003 M Na-2 (CO3)-C-13 at various temperatures. Two singlet signals corresponding to free and coordinated CO32- were observed at 169.13 and 106.70 ppm, respectively. From the peak area ratio, the structure of the uranyl(V) carbonate complex was determined as [(UO2)-O-V(CO3)(3)](5-). Furthermore, kinetic analyses of the exchange reaction of free and coordinated CO32- in [(UO2)-O-V(CO3)(3)](5-) were carried out using 13C NMR line-broadening. As a result, the first-order rate constant at 298 K and the activation parameters for CO32- exchange reaction in [(UO2)-O-V(CO3)(3)](5-) were evaluated as 1.13 x 10(3) s(-1) and Delta H-not equal = 62.0 +/- 0.7 KJ(.)mol(-1), Delta S-not equal = 22 +/- 3 J(.)mol(-1.)K(-1), respectively. We suggest that the exchange follows a dissociative mechanism as in the corresponding [(UO2)-O-VI(CO3)(3)](4-) complex.

Place, publisher, year, edition, pages
2005. Vol. 44, no 13, 4472-4474 p.
Keyword [en]
NUCLEAR MAGNETIC-RESONANCE, LIGAND-EXCHANGE REACTIONS, AQUEOUS-SOLUTION, WATER EXCHANGE, URANIUM(V), REDUCTION, C-13, ACETYLACETONATE, SPECTROSCOPY, MECHANISMS
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-37852DOI: 10.1021/ic050308xISI: 000229982700011Scopus ID: 2-s2.0-22544467767OAI: oai:DiVA.org:kth-37852DiVA: diva2:435401
Note
QC 20110818Available from: 2011-08-18 Created: 2011-08-18 Last updated: 2017-12-08Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Grenthe, Ingmar
By organisation
Inorganic Chemistry
In the same journal
Inorganic Chemistry
Inorganic Chemistry

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 37 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf