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Journal Article

Reactions of Cyclopentadienylidenes with CF3I: Electron Bond Donation versus Halogen Bond Donation of the Iodine Atom

MPS-Authors

Henkel,  Stefan
Lehrstuhl für Organische Chemie II, Ruhr-Universität Bochum;
Research Group Sánchez-García, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Sanchez-Garcia,  Elsa
Research Group Sánchez-García, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Henkel, S., Trosien, I., Mieres-Pérez, J., Lohmiller, T., Savitsky, A., Sanchez-Garcia, E., et al. (2018). Reactions of Cyclopentadienylidenes with CF3I: Electron Bond Donation versus Halogen Bond Donation of the Iodine Atom. The Journal of Organic Chemistry, 83(15), 7586-7592. doi:10.1021/acs.joc.8b01328.


Cite as: https://hdl.handle.net/21.11116/0000-0002-05B0-1
Abstract
The interaction of cyclopentadienylidene and tetrachlorocyclopentadienylidene with the halogen bond donor CF3I has been studied by matrix isolation spectroscopy. The carbenes were produced by photolysis of the corresponding diazo compounds, matrix-isolated in argon doped with 1% CF3I at 3 K. Bimolecular reactions between the carbenes and CF3I were induced by annealing these matrices to 25–30 K to allow for the diffusion of trapped species. Instead of classical halogen-bonded complexes, these carbenes form complexes in which the iodine atom is shared between the carbene center and the CF3 group. Photolysis of the complexes at 3 K yields radical pairs, which reversibly react back to the complexes when the matrices are warmed to 25–30 K.