TY - JOUR
T1 - Direct measurement of singlet methylene removal rates by organic species containing the - O - and > C = O moieties
AU - Staker, Warren S.
AU - King, Keith D.
AU - Gutsche, Greg J.
AU - Lawrance, Warren D.
PY - 1992
Y1 - 1992
N2 - The technique of laser flash photolysis/laser absorption has been used to obtain absolute removal rate constants for singlet methylene 1CH2 (ã 1A1) with dimethyl ether (CH3OCH3), acetaldehyde (CH3CHO), acetone (CH3COCH3), acetic acid (CH3CO2H), methyl formate (HCO2CH3), acetic anhydride (CH3CO2COCH3), and dimethyl carbonate (CH3OCO2CH3). The removal rate constants were found to be (1.80 ± 0.22), (2.81 ± 0.35), (4.48 ± 0.35), (5.71 ± 0.40), (2.82 ± 0.32), (5.27 ± 0.71) and (2.68 ± 0.28) × 10-10 cm3 molecule-1 s-1, respectively. Removal rate constants for the molecules containing the > C=O moiety are considerably greater than those for the corresponding alkanes, but the removal rate constant for dimethyl ether is significantly less than that for the alkane analogue, propane. Removal rate constants were also remeasured for ethane (C2H6), ethene (C2H4) and methanol (CH3OH) and found to be (1.95 ± 0.48), (2.46 ± 0.23) and (3.69 ± 0.37) × 10-10 cm3 molecule-1 s-1, respectively.
AB - The technique of laser flash photolysis/laser absorption has been used to obtain absolute removal rate constants for singlet methylene 1CH2 (ã 1A1) with dimethyl ether (CH3OCH3), acetaldehyde (CH3CHO), acetone (CH3COCH3), acetic acid (CH3CO2H), methyl formate (HCO2CH3), acetic anhydride (CH3CO2COCH3), and dimethyl carbonate (CH3OCO2CH3). The removal rate constants were found to be (1.80 ± 0.22), (2.81 ± 0.35), (4.48 ± 0.35), (5.71 ± 0.40), (2.82 ± 0.32), (5.27 ± 0.71) and (2.68 ± 0.28) × 10-10 cm3 molecule-1 s-1, respectively. Removal rate constants for the molecules containing the > C=O moiety are considerably greater than those for the corresponding alkanes, but the removal rate constant for dimethyl ether is significantly less than that for the alkane analogue, propane. Removal rate constants were also remeasured for ethane (C2H6), ethene (C2H4) and methanol (CH3OH) and found to be (1.95 ± 0.48), (2.46 ± 0.23) and (3.69 ± 0.37) × 10-10 cm3 molecule-1 s-1, respectively.
UR - http://www.scopus.com/inward/record.url?scp=0001259107&partnerID=8YFLogxK
U2 - 10.1039/FT9928800659
DO - 10.1039/FT9928800659
M3 - Article
AN - SCOPUS:0001259107
SN - 0956-5000
VL - 88
SP - 659
EP - 662
JO - Journal of the Chemical Society, Faraday Transactions
JF - Journal of the Chemical Society, Faraday Transactions
IS - 5
ER -