Photodissociation Dynamics of Dimethyl Sulfoxide-d6 at 210 nm: Experimental Evidence for a Prompt Anisotropic CD3 Channel

G. A. AMARAL; I. TORRES; G. A. PINO; F. J. AOIZ; L. BAÑARES

CHEMICAL PHYSICS LETTERS

ELSEVIER SCIENCE BV

Año: 2004 vol. 386 p. 419 - 424

0009-2614

The photodissociation of dimethyl sulfoxide-d6 has been studied at 210 nm by REMPI-TOFMS spectroscopy. The anisotropy of a fast CD3 dissociation channel has been characterized for the first time. This channel corresponds to the formation of CD3 and electronically excited CD3SO(~A) with an anisotropy parameter b ¼ 0.280.05. About 38% of the primary CD3 fragments are formed via this fast dissociative channel with a large translational energy release. A slow isotropic primary CD3 channel as well as a secondary CD3 channel arising from internally hot CD3SO(~X) have been detected in accordance to previous studies at 210 nm6 has been studied at 210 nm by REMPI-TOFMS spectroscopy. The anisotropy of a fast CD3 dissociation channel has been characterized for the first time. This channel corresponds to the formation of CD3 and electronically excited CD3SO(~A) with an anisotropy parameter b ¼ 0.280.05. About 38% of the primary CD3 fragments are formed via this fast dissociative channel with a large translational energy release. A slow isotropic primary CD3 channel as well as a secondary CD3 channel arising from internally hot CD3SO(~X) have been detected in accordance to previous studies at 210 nm3 dissociation channel has been characterized for the first time. This channel corresponds to the formation of CD3 and electronically excited CD3SO(~A) with an anisotropy parameter b ¼ 0.280.05. About 38% of the primary CD3 fragments are formed via this fast dissociative channel with a large translational energy release. A slow isotropic primary CD3 channel as well as a secondary CD3 channel arising from internally hot CD3SO(~X) have been detected in accordance to previous studies at 210 nm3SO(~A) with an anisotropy parameter b ¼ 0.280.05. About 38% of the primary CD3 fragments are formed via this fast dissociative channel with a large translational energy release. A slow isotropic primary CD3 channel as well as a secondary CD3 channel arising from internally hot CD3SO(~X) have been detected in accordance to previous studies at 210 nm3 channel as well as a secondary CD3 channel arising from internally hot CD3SO(~X) have been detected in accordance to previous studies at 210 nm3 channel arising from internally hot CD3SO(~X) have been detected in accordance to previous studies at 210 nm