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Issue 18, 2012
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Femtosecond dynamics of cyclopropenylidene, c-C3H2

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The photophysics of the B 1B1 state of isolated cyclopropenylidene, c-C3H2, has been studied by femtosecond time-resolved photoionisation and photoelectron spectroscopy. The carbene was produced by flash pyrolysis of 3-chlorocycloprop-1-ene. The bands at 266.9 nm and 264.6 nm have been investigated. The excited state deactivates in a two step process. The first time constant of less than 50 fs corresponds most likely to a nonradiative transition to the A-state, the second one on the order of 200 fs describes the internal conversion to the electronic ground state. The data are compared to those measured for the chlorinated carbene c-C3HCl. In the photoelectron spectrum of c-C3H2 resonances were observed which can be assigned to members of a Rydberg d-series.

Graphical abstract: Femtosecond dynamics of cyclopropenylidene, c-C3H2

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Publication details

The article was received on 24 Nov 2011, accepted on 30 Nov 2011 and first published on 16 Dec 2011

Article type: Paper
DOI: 10.1039/C2CP23728H
Citation: Phys. Chem. Chem. Phys., 2012,14, 6173-6178

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    Femtosecond dynamics of cyclopropenylidene, c-C3H2

    P. Hemberger, J. Köhler, I. Fischer, G. Piani, L. Poisson and J. Mestdagh, Phys. Chem. Chem. Phys., 2012, 14, 6173
    DOI: 10.1039/C2CP23728H

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