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Author(s):   Oh, C.Y.; Shin, S.K.; Kim, H.L.; Park, C.R.
Title:   Photodissociation of methacrylonitrile at 193 nm: The CN radical product channel
Journal:   J. Phys. Chem. A
Volume:   107
Page(s):   4333 - 4338
Year:   2003
Reference type:   Journal article
Squib:   2003OH/SHI4333-4338

Reaction:   hv(193 nm) + CH2=C(CH3)CNCN + ·CH2CH=CH2
Reaction order:   1
Temperature:   298 K
Rate expression:   no rate data available
Category:  Experiment
Data type:   Absolute value measured directly
Experimental procedure:   Static or low flow - Data taken vs time
Excitation technique:   Flash photolysis (laser or conventional)
Time resolution:   In real time
Analytical technique:   Laser induced fluorescence
Comments:   1) No temperature stated; 298 K is presumed.

2) The measured energy distributions of CN are well represented by statistical prior calculations, assuming the CN and allyl radical products rather than the propenyl isomer. Ab initio calculations were performed for the relevant product species and transition states for isomerization and CN elimination. It has been concluded that methacrylonitrile dissociates in the ground electronic state via allyl cyanide formed by CN and H atom migration prior to dissociation.

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