Journal of Physical Chemistry p. 2576 - 2581 (1992)
Update date:2022-08-11
Topics:
Hassoon, Salah
Rajapakse, Nandani
Snavely, Deanne L.
The photoisomerization of methyl isocyanide to form acetonitrile induced by excitation into the fourth (ca. 1 kcal/mol above the activation barrier) and fith (ca. 8 kcal/mol above the barrier) C-H stretch vibrational overtones is reported.The ratio of the collisional deactivation rate constant to be unimolecular rate coefficient, k(ε), was determined by a Stern-Volmer analysis plotting the inverse apparent rate constant against the total pressure.The unimolecular rate coefficients increase monotonically with increasing excitation energies across the rotational band contours.The experimental k(ε) agree with RRKM calculated values.The Stern-Volmer plots are nonlinear at low pressure: the fourth overtone excitation shows negative curvature (decreasing slope with increasing pressure) and the fifth overtone shows positive curvature (increasing slope with increasing pressure).The magnitude and direction of this curvature agree well with the calculated Stern-Volmer plots in earlier work using a master equation simulation.In these vibrational overtone activation studies, the collisional deactivation efficiency of argon is 0.3 of that of the self-collider.
View MoreAUSHUN PHARMACEUTICAL TECHNOLOGY CO,.LTD
Contact:+86-25-86883560 15951806178
Address:14 Dayingbi, Zhujiang Rd. East, Nanjing, Jiangsu, China.
Contact:0086 371 65711996
Address:Jalan 4/3, Kawasan Perindustrian Serendah, 48000 Rawang,
Onlychem (Jinan)Biotech Co.,Ltd
Contact:86-531-83175885
Address:No. 44, Honglou South Road, Jinan,China
Contact:86-25-58619180
Address:Nanjing High-Tech Zone 10 Xinghuo Road Pukou District Nanjing, Jiangsu 210061 The People's Republic of China
website:http://www.angchenchem.com
Contact:+86-510-88302099 82327577
Address:Rm. 404/405, Floor 4th, No. 983 FengXiang Road, Wuxi, China
Doi:10.1016/j.carres.2011.07.005
(2011)Doi:10.1021/ja00315a071
(1984)Doi:10.1021/om200367j
(2011)Doi:10.1016/S0040-4039(00)86215-2
(1983)Doi:10.1007/s00706-017-1995-8
(2017)Doi:10.1134/S1070363208060303
(2008)