Abstract

The photodissociation of dimethyl sulfoxide-d 6 has been studied at 210 nm by REMPI-TOFMS spectroscopy. The anisotropy of a fast CD 3 dissociation channel has been characterized for the first time. This channel corresponds to the formation of CD 3 and electronically excited CD 3SO( A ̃ ) with an anisotropy parameter β = 0.28 ± 0.05. About 38% of the primary CD 3 fragments are formed via this fast dissociative channel with a large translational energy release. A slow isotropic primary CD 3 channel as well as a secondary CD 3 channel arising from internally hot CD 3SO( X ̃ ) have been detected in accordance to previous studies at 210 nm.

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