info:eu-repo/semantics/article
Preparation of FC(S)SF, FC(S)SeF and FC(Se)SeF through matrix photochemical reactions of F2with CS2, SCSe, and CSe2
Fecha
2021-10Registro en:
Bava, Yanina Belén; Cozzarín, Melina Vanesa; Della Vedova, Carlos Omar; Willner, Helge; Romano, Rosana Mariel; Preparation of FC(S)SF, FC(S)SeF and FC(Se)SeF through matrix photochemical reactions of F2with CS2, SCSe, and CSe2; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 23; 37; 10-2021; 20892-20900
1463-9076
CONICET Digital
CONICET
Autor
Bava, Yanina Belén
Cozzarín, Melina Vanesa
Della Vedova, Carlos Omar
Willner, Helge
Romano, Rosana Mariel
Resumen
The reactions of F2 with CS2, SCSe, and CSe2, respectively, were analyzed under matrix conditions by co-deposition of the halogen with the triatomic molecules trapped in argon matrices at cryogenic temperatures. In all cases, after codeposition, the formation of the respective van der Waals complexes is observed. When each mixture is subsequently irradiated by means of broad-band UV-visible light (200 ≤ λ ≤ 800 nm), FC(S)SF, fluorothiocarbonylsulfenyl fluoride, FC(S)SeF, fluorothiocarbonylselenyl fluoride and FC(Se)SeF, fluoroselenocarbonylselenyl fluoride are produced, respectively. All these species exist as two stable planar syn- and anti- conformers (syn- and anti- of the the CZ double bond, Z S, Se, with respect to the SF or SeF single bond, respectively). For FC(S)SF, syn- is the rotamer with the lowest energy, while for both FC(S)SeF and FC(Se)SeF the anti-form is the lowest energy conformer. In all cases, other products due to alternative or subsequent photochannels are observed during the photochemical processes carried out in argon matrices at cryogenic temperatures.