| dc.description |
The main products of the photolysis (λ 185 nm) of neat liquid methoxyethanol (quantum yields in parentheses) are H2(0.27), CH2O (0.19), CH4(0.15), methoxyacetaldehyde (0.10), ethylene glycol (0.10), ethanol (0.09), and methanol (0.05). The quantum yields of 34 products altogether have been measured. It is concluded that there are two major reactions (i) and (ii), involving homolytic splitting of the Oâ H and Oâ CH3 bonds. Molecular HOCH2CH2OCH3 â H·+·OCH2CH2OCH3(i), â HOCH2CH2O·+·CH3(ii) fragmentation reactions and the homolytic scission of other bonds play a minor role. In the presence of N2O (saturated solution)Ï (H2) is decreased by ca. 10% while Ï (N2) is 0.08 indicating that photoionisation processes are only moderately important. In dilute aqueous solution Ï (H2) and Ï (CH4) are strongly decreased. |
