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Experimental and theoretical studies of isomeric C2H5S and C2H5S+

✍ Scribed by Z.-X. Ma; C.-L. Liao; H.-M. Yin; C.Y. Ng; See-Wing Chiu; Ngai Ling Ma; Wai-Kee Li

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
515 KB
Volume
213
Category
Article
ISSN
0009-2614

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✦ Synopsis

By combining photoionization and photodissociation measurements with ab initio Gaussian-Z (G2) calculations on the CZHSS and C2H$+ system, we have concluded that CHsCH2S is the dominant primary product formed in the 193 nm photodissociation of (CH,CH&S, while CH,CHSH+ is the product ion formed at the photoionization onset of CzH$+ from (CHICHZM The G2 predictions for the beats of formation at 0 K (A&) for the isomers of C2HIS and &HIS+ (CHKH2S: A&( )=27.5 kW mokCH,SCH,: A&,,(G2)=37.3 keal/mol; CH,CH,S+:A&(G2)=236.5 kcal/mol;CH,CHSH+:A&(G2)= 192.6kcaUmol; and CH$CH; : A&,(G?) = 195.3 kcal/mol) are in agreement with available experimental AHm values (CHFHzS: AFIm(exp)=31.4f2kcal/mol; CH,SCH2: AHr0/(exp)=34.8f2.5keal/mol; CH&HZF: ~,(

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