Journal of Physical Chemistry p. 1502 - 1504 (1992)
Update date:2022-08-11
Topics:
Mansueto, Edward S.
Wight, Charles A.
Binary solid solutions of 5percent chlorine in acetaldehyde were formed by vapor deposition onto the surface of a CsI optical window at 77 and 10 K.Laser photolysis of the low-temperature films at 308 nm induces a chemical reaction forming acetyl chloride and oligomeric acetaldehyde as the major products.The average chain length of the oligomer is 8.1 +/- 1.1 monomer units for the 77 K experiments.Films deposited and photolyzed at 10 K exhibit smaller chain lengths which grow upon warming to temperature above 40 K.The photochemical behavior of this system parallels that of well-studied formaldehyde polymerization reaction in the solid state in which the principal barriers to chain propagation are spatial and orientational discordering of molecules in the solid lattice.
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