1. Photodissociation of Methyl Nitrite from the S 2 state -- Ion Images and Vector Correlations Aidan Klobuchar, and Jeffrey Bartz Department of Chemistry, Kalamazoo College, 1200 Academy Street, Kalamazoo, MI 49006

2. Nature of S 2 State Higher in energy than S 1 – max ~ 210 nm Repulsive surface – Direct dissociation S2S2

3. Experimental

4. Molecule Synthesized in the lab Expect a parallel transition to excite to the S 2 state

5. Velocity-Mapped Ion Images of NO Photofragment

6. Initial Dissociation Results High speed NO photofragment – >2000 m/s Parallel dissociation – NO velocity aligned with the linear polarization of the laser

7. Two Speed Distributions Photofragment translational energy difference in energy is ~ 2100 cm -1

8. Two Speed Distributions Depend on J”

9. Energy Available E photon 44,500 cm -1 E BDE 17,100 cm -1 E fast,trans 12,000 cm -1 E NO rot 3,400 cm -1 E methoxy 12,000 cm -1

10. Vector Correlation Data  -v  -j v -j quadratic  -v-j quartic  -v-j

11. Vector Correlation  v j

12. Conclusions The S 2 state dissociation is direct Two NO photofragment translational energies at lower J” CH 3 O carries away at least 12,000 cm -1 The vector correlations hint that  ||v  j

13. Acknowledgments NSF HHMI