Abstract
Reactions of the methylidyne (CH) radical with ammonia (NH3), methylamine (CH3NH2), dimethylamine ((CH3)2NH), and trimethylamine ((CH3)3N) have been investigated under multiple collision conditions at 373 K and 4 Torr. The reaction products are detected by using soft photoionization coupled to orthogonal acceleration time-of-flight mass spectrometry at the Advanced Light Source (ALS) synchrotron. Kinetic traces are employed to discriminate between CH reaction products and products from secondary or slower reactions. Branching ratios for isomers produced at a given mass and formed by a single reaction are obtained by fitting the observed photoionization spectra to linear combinations of pure compound spectra. The reaction of the CH radical with ammonia is found to form mainly imine, HN═CH2, in line with an addition-elimination mechanism. The singly methyl-substituted imine is detected for the CH reactions with methylamine, dimethylamine, and trimethylamine. Dimethylimine isomers are formed by the reaction of CH with dimethylamine, while trimethylimine is formed by the CH reaction with trimethylamine. Overall, the temporal profiles of the products are not consistent with the formation of aminocarbene products in the reaction flow...Continue Reading
References
Sep 29, 2005·Physical Chemistry Chemical Physics : PCCP·Nicolas DaugeyGérard Dorthe
Mar 3, 2006·The Journal of Physical Chemistry. a·Fabien GoulayBertrand R Rowe
Sep 27, 2006·The Journal of Chemical Physics·C RomanzinS Douin
Jul 5, 2007·The Journal of Physical Chemistry. a·Michael R BermanRodney J Bartlett
Dec 14, 2007·Physical Chemistry Chemical Physics : PCCP·Craig A TaatjesPhillip R Westmoreland
Dec 3, 2008·The Review of Scientific Instruments·David L OsbornStephen R Leone
Dec 5, 2008·The Journal of Physical Chemistry. a·Zhenyu TianFei Qi
Jan 7, 2009·Journal of the American Chemical Society·Fabien GoulayStephen R Leone
May 7, 2010·Angewandte Chemie·Katharina Kohse-HöinghausPhillip R Westmoreland
Dec 1, 2011·The Journal of Physical Chemistry. a·Mark A BlitzIan W M Smith
Jan 11, 2012·The Journal of Physical Chemistry. a·Fabien GoulayStephen R Leone
Jun 30, 2012·Physical Chemistry Chemical Physics : PCCP·John D SaveeDavid L Osborn
Feb 14, 2013·Physical Chemistry Chemical Physics : PCCP·Fabien GoulayCraig A Taatjes
Sep 26, 2013·The Journal of Physical Chemistry. a·L OnelC J Nielsen
Jul 30, 2014·Environmental Science & Technology·Lavinia OnelPaul Seakins
Jan 13, 2015·The Journal of Physical Chemistry. a·John M Simmie, Kieran P Somers
Apr 5, 2012·The Journal of Physical Chemistry Letters·L OnelP W Seakins
Aug 26, 2015·Physical Chemistry Chemical Physics : PCCP·Michael CapronFabien Goulay
Sep 12, 2015·Physical Chemistry Chemical Physics : PCCP·L OnelP W Seakins
Mar 10, 2009·Journal of Chemical Theory and Computation·Vincenzo BaroneFabrizio Santoro
Feb 4, 2016·Physical Chemistry Chemical Physics : PCCP·Adam J Trevitt, Fabien Goulay
Nov 2, 2016·The Journal of Physical Chemistry. a·J BourgalaisS D Le Picard