Unimolecular dissociation of methylsilylium and monochloromethylsilylium in the gas phase

1993 ◽  
Vol 97 (49) ◽  
pp. 12710-12717 ◽  
Author(s):  
R. Bakhtiar ◽  
C. M. Holznagel ◽  
D. B. Jacobson
Keyword(s):  
Gas Phase ◽  
Unimolecular Dissociation

Gas-Phase Unimolecular Dissociation Reveals Dominant Base Property of Protonated Homocysteine Sulfinyl Radical Ions

2015 ◽  
Vol 22 (3) ◽  
pp. 934-940 ◽  
Author(s):  
Chasity B. Love-Nkansah ◽  
Lei Tan ◽  
Joseph S. Francisco ◽  
Yu Xia
Keyword(s):  
Gas Phase ◽  
Unimolecular Dissociation ◽  
Radical Ions ◽  
Base Property ◽  
Sulfinyl Radical

scholarly journals IR Laser Chemistry of Dimethylnitramine and Diethylnitramine

1993 ◽  
Vol 13 (2) ◽  
pp. 101-111 ◽  
Author(s):  
Yannis G. Lazarou ◽  
Panos Papagiannakopoulos
Keyword(s):  
Steady State ◽  
Gas Phase ◽  
Oxidation Reaction ◽  
Rate Coefficient ◽  
Unimolecular Dissociation ◽  
Unimolecular Decomposition ◽  
Laser Chemistry ◽  
Ir Laser ◽  
Steady State Rate ◽  
State Rate

The infrared multiphoton decomposition of dimethylnitramine and diethylnitramine in the gas phase under almost collisionless conditions has been studied with a tunable CO2 laser. The steady state rate coefficient for their unimolecular decomposition were found to be kDENA(st) = 105.5 ± 0.1(I/MW cm–2) s–1, and kDENA(st) = 105.2 ± 0.1(I/MW cm–2) s–1, for laser intensities in the range 3–15 MW cm –2. The dependence of rate constants and product yields on laser fluence have indicated that the unimolecular dissociation of both nitramines occurs via scission of the N-NO2 bond, and the main secondary reaction leading to the final photolysis products (nitrosamine and nitroxide) is the oxidation reaction of nascent dialkylamino radical with parent nitramine or NO2 product.

Sign in / Sign up

Export Citation Format

Share Document