Formation of complexes between uracil and calcium ions: an ESI/MS/MS study in combination with theoretical calculations
✍ Scribed by Emilie-Laure Zins; Sophie Rochut; Claude Pepe
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 168 KB
- Volume
- 44
- Category
- Article
- ISSN
- 1076-5174
- DOI
- 10.1002/jms.1561
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✦ Synopsis
Abstract
Cationized uracil clusters around calcium metal ions were generated in the gas phase by electrospray ionization (ESI). A previous study showed that with particular experimental conditions, hexamer, octamer, decamer, dodecamer and tetradecamer uracil clusters are present in high quantities. New experiments were carried out to understand the reasons for the particular stability of these complexes. MS/MS experiments suggested that these uracil clusters belong to the same family. Based on ab initio and DFT quantum chemistry calculations, structures in agreement with experimental results are proposed for these clusters. Copyright © 2009 John Wiley & Sons, Ltd.