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Published February 17, 1988 | public
Journal Article

Synchrotron radiation selected s-tetrazine ion chemistry


With use of synchrotron radiation (9-22 eV) the photon-selected chemistry of s-tetrazine ion is reported. Dissociation intermediates and products are investigated by the threshold photoelectron-photoion coincidence technique. On the basis of breakdown curves and thermodynamics, the loss of N_2 is found to be associated with the C_2N_2H_2^+ ion with an activation energy of 0.96 eV. Smaller fragment ions such as HCNH^+ and HCN^+ originate from single bond breaking of the C_2N_2H_2^+ primary fragment ion rather than the dissociation of the parent ion.

Additional Information

© 1988 American Chemical Society. Received June 19, 1987. We thank M. Ait-Kaci for helping us take some of the data and M. C. Duval for suggestions regarding some critical steps in the s-tetrazine synthesis. We are indebted to C. Baudin and A. Ruaudel for providing us with s-tetrazine in large quantities (after a tedious and long procedure) and to H. Kroto for sending us his results prior to publications. Finally, we are grateful to T. Baer, P. Millie, E. Ferguson, C. Lifchitz, and P. Hiberty for useful discussions and suggestions and to the LURE staff for operating the ACO storage ring and the general facilities. One of us (A.H.Z.) thanks Professor J.-C, Lehmann for his hospitality at Ecole Normale Supérieure and CNRS and the President's Fund at Caltech. The Guggenheim Foundation Fellowship is greatly appreciated for making this collaboration possible in France.

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