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The hydroxyl radical reaction rate constant and products of ethyl 3‐ethoxypropionate
Author(s) -
Baxley J. Steven,
Henley Michael V.,
Wells J. R.
Publication year - 1997
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/(sici)1097-4601(1997)29:8<637::aid-kin9>3.0.co;2-v
Subject(s) - chemistry , single bond , double bond , bond order , triple bond , reaction rate constant , bent bond , ethyl formate , bond cleavage , bond strength , bond energy , sextuple bond , bond length , molecule , organic chemistry , kinetics , alkyl , physics , adhesive , layer (electronics) , quantum mechanics , catalysis
The relative rate technique has been used to measure the hydroxyl radical (OH) reaction rate constant of ethyl 3‐ethoxypropionate (EEP, CH 3 CH 2 (SINGLE BOND)O(SINGLE BOND)CH 2 CH 2 C(O)O(SINGLE BOND)CH 2 CH 3 ). EEP reacts with OH with a bimolecular rate constant of (22.9±7.4)×10 −12 cm 3 molecule −1 s −1 at 297±3 K and 1 atmosphere total pressure. In order to more clearly define EEP's atmospheric reaction mechanism, an investigation into the OH+EEP reaction products was also conducted. The OH+EEP reaction products and yields observed were: ethyl glyoxate (EG, 25±1% HC((DOUBLE BOND)O)C((DOUBLE BOND)O)(SINGLE BOND)O(SINGLE BOND)CH 2 CH 3 ), ethyl (2‐formyl) acetate (EFA, 4.86±0.2%, HC((DOUBLE BOND)O)(SINGLE BOND)CH 2 (SINGLE BOND)C((DOUBLE BOND)O)(SINGLE BOND)O(SINGLE BOND)CH 2 CH 3 ), ethyl (3‐formyloxy) propionate (EFP, 30±1%, HC((DOUBLE BOND)O)(SINGLE BOND)O(SINGLE BOND)CH 2 CH 2 (SINGLE BOND)C((DOUBLE BOND)O)(SINGLE BOND)O(SINGLE BOND)CH 2 CH 3 ), ethyl formate (EF, 37±1%, HC((DOUBLE BOND)O)O(SINGLE BOND)CH 2 CH 3 ), and acetaldehyde (4.9±0.2%, HC((DOUBLE BOND)O)CH 3 ). Neither the EEP's OH rate constant nor the OH/EEP reaction products have been previously reported. The products' formation pathways are discussed in light of current understanding of oxygenated hydrocarbon atmospheric chemistry. © 1997 John Wiley & Sons, Inc.