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Specific Chemical Reactivities of Spatially Separated 3-Aminophenol Conformers with Cold Ca+ Ions

Chang, Yuan-Pin and Długołęcki, Karol and Küpper, Jochen and Rösch, Daniel and Wild, Dieter and Willitsch, Stefan. (2013) Specific Chemical Reactivities of Spatially Separated 3-Aminophenol Conformers with Cold Ca+ Ions. Science, 342 (6154). pp. 98-101.

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Official URL: http://edoc.unibas.ch/dok/A6223213

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Abstract

Many molecules exhibit multiple rotational isomers (conformers) that interconvert thermally and are difficult to isolate. Consequently, a precise characterization of their role in chemical reactions has proven challenging. We have probed the reactivity of specific conformers by using an experimental technique based on their spatial separation in a molecular beam by electrostatic deflection. The separated conformers react with a target of Coulomb-crystallized ions in a trap. In the reaction of Ca(+) with 3-aminophenol, we find a twofold larger rate constant for the cis compared with the trans conformer (differentiated by the O-H bond orientation). This result is explained by conformer-specific differences in the long-range ion-molecule interaction potentials. Our approach demonstrates the possibility of controlling reactivity through selection of conformational states.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Chemische Physik (Willitsch)
UniBasel Contributors:Willitsch, Stefan
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Association for the Advancement of Science
ISSN:0036-8075
e-ISSN:1095-9203
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:03 May 2017 12:27
Deposited On:27 Mar 2014 13:12

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