Photodissociation of isomeric dichloroethylenes in the ultraviolet: Effect of the second chlorine atom substitution on the dynamics

Chandra, Manabendra and Senapati, Dulal and Tak, Manish and Das, Puspendu K (2006) Photodissociation of isomeric dichloroethylenes in the ultraviolet: Effect of the second chlorine atom substitution on the dynamics. In: Chemical Physics Letters, 430 (1-3). pp. 32-35.

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Abstract

We report the Cl-*(P-2(1/2)) production dynamics in the near-UV dissociation of three isomers (cis-, gem-, and trans-) of dichloroethylene using the conventional resonance enhanced multiphoton ionization technique. Substantial amounts of Cl-* are produced in the wavelength range 222-304 nm. The Cl-* quantum yield (phi(*)) i maximum at 304 nm for all the isomers and phi(*)(cis) is markedly higher than phi(*)(gem) and phi(*)(trans) except at 222 nm. Existence of both direct and indirect dissociation pathways at these wavelengths complicates the Cl* production dynamics. The higher value of phi(*)(cis) originates from a large contribution from direct dissociation via the (n, sigma(*)) state.

Item Type:	Journal Article
Publication:	Chemical Physics Letters
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	01 Sep 2010 04:55
Last Modified:	19 Sep 2010 06:12
URI:	http://eprints.iisc.ac.in/id/eprint/30876

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