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Issue 2, 2014
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Selective deprotonation of oxazole and photoelectron imaging of the oxazolide anion

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Abstract

A photoelectron imaging study of the oxazolide anion obtained by selective deprotonation of oxazole at the C2 position is reported. The photodetachment transitions observed at 355, 392, and 532 nm are assigned to the ground state of the neutral oxazolyl σ radical. A Franck–Condon analysis of this transition aids in the first determination of the adiabatic electron affinity of oxazolyl, EA = 2.21 ± 0.02 eV. A vibrational progression with a frequency of 890 ± 80 cm−1 is observed, corresponding to an in-plane ring distortion mode. The photoelectron angular distributions are analyzed using the mixed s–p model, shedding light on the hybrid character of the anion HOMO.

Graphical abstract: Selective deprotonation of oxazole and photoelectron imaging of the oxazolide anion

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Publication details

The article was received on 26 Jul 2013, accepted on 01 Oct 2013 and first published on 02 Oct 2013


Article type: Paper
DOI: 10.1039/C3CP53176G
Phys. Chem. Chem. Phys., 2014,16, 527-532

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    Selective deprotonation of oxazole and photoelectron imaging of the oxazolide anion

    L. M. Culberson, C. C. Blackstone, R. Wysocki and A. Sanov, Phys. Chem. Chem. Phys., 2014, 16, 527
    DOI: 10.1039/C3CP53176G

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