Photodissociation of isobutene at 193 nm |
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Authors: | Just Gabriel M P Negru Bogdan Park Dayoung Neumark Daniel M |
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Institution: | Department of Chemistry, University of California, Berkeley, CA 94720, USA. |
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Abstract: | The collisionless photodissociation dynamics of isobutene (i-C(4)H(8)) at 193 nm via photofragment translational spectroscopy are reported. Two major photodissociation channels were identified: H + C(4)H(7) and CH(3) + CH(3)CCH(2). Translational energy distributions indicate that both channels result from statistical decay on the ground state surface. Although the CH(3) loss channel lies 13 kcal mol(-1) higher in energy, the CH(3):H branching ratio was found to be 1.7 (5), in reasonable agreement with RRKM calculations. |
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