Collisional Deactivation of Vibrationally Excited sec‐Butyl‐d1 Radicals Produced by Chemical Activation

摘要: Vibrationally excited sec‐butyl‐d1 radicals have been produced by addition of D atoms to cis‐butene‐2. The radicals, which a narrow range internal energy E, undergo either collisional stabilization (S) or decomposition (D) with specific rate kE. ratio D/S has studied as function pressure down 0.005 mm at 25°. Using calculated values kE, information is obtained about vibrational transitions upon collision butene molecules, under different assumptions regarding the form transition probability function. It shown that in these cases average transferred least 8.5 kcal/mole, and quite probably much more, supports conventional Lindemann activation‐deactivation assumption strong collisions this case.