The Hidden Equilibrium in Aqueous Sodium Carbonate Solutions − Evidence for the Formation of the Dicarbonate Anion

Crossover 13C NMR experiments between [13C]carbonate and [18O]carbonate in aqueous solution confirm the combined action of two oxygen‐exchange modes. The isotopomeric carbon dioxides formed in the hydrolysis equilibrium of the labeled carbonate anions react with hydroxide with formation of hydrogenc...

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Bibliographic Details
Published in:European journal of inorganic chemistry 2005-01, Vol.2005 (1), p.168-172
Main Authors: Zeller, Klaus-Peter, Schuler, Paul, Haiss, Peter
Format: Article
Language:English
Subjects:
Dicarbonate anion
Isotopic labeling
NMR spectroscopy
Oxygen transfer
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Summary:Crossover 13C NMR experiments between [13C]carbonate and [18O]carbonate in aqueous solution confirm the combined action of two oxygen‐exchange modes. The isotopomeric carbon dioxides formed in the hydrolysis equilibrium of the labeled carbonate anions react with hydroxide with formation of hydrogencarbonate and with isotopomeric carbonate anions yielding the corresponding dicarbonate species, which, in the back reaction, form carbon dioxide and carbonate anions with distributed oxygen. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
ISSN:1434-1948
1099-0682
DOI:10.1002/ejic.200400445