Photochemical reactions of dimethyl ether radical cations in freon matrices and SF6 at 77 K

Abstract

It has been shown for the first time that under the action of light within the absorption band of dimethyl ether radical cations in freon matrices [λ _max ≅ 436 nm, ε _max ≅ (2.5±0.5) x; 10 ³ M ^-1 cm ^-1 ], the radical cations decay due to charge transfer to freon molecules, whereas in an SF ₆ matrix they undergo deprotonation with quantum yields Φ ≅ (4-15) x;10 ^-2 and Φ ≅ (2-6) x; 10 ^-4 , respectively, at 77 K.