✦ LIBER ✦

UV absorption spectrum and decay kinetics of CF2Br in CO2 laser-induced photodissociation of CF2Br2

✍ Scribed by R.K. Vatsa; Awadhesh Kumar; P.D. Naik; K.V.S. Rama Rao; J.P. Mittal

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 551 KB
Volume: 207
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(93)85014-f

No coin nor oath required. For personal study only.

✦ Synopsis

A transient absorption spectrum has been observed in the pulsed CO2 laser photodissociation of CFzBrz. This has been assigned to the intermediate CFsBr radical. The spectrum shows a broad band in the region of 220-320 nm with a maximum around 260 nm. The absorption cross section of CFzBr at 262 nm and its dimerization rate constant are reported.

📜 SIMILAR VOLUMES

Initial distribution of energy in produc

Initial distribution of energy in produced by CO2 laser-induced dissociation of CF2Cl2 and CF2Br2

✍ David S. King; John C. Stephenson 📂 Article 📅 1977 🏛 Elsevier Science 🌐 English ⚖ 434 KB

UV absorption spectrum of CF3CFClO2 and

UV absorption spectrum of CF3CFClO2 and kinetics of the self reaction of CF3CFCl and CF3CFClO2 and the reactions of CF3CFClO2 with NO and NO2

✍ Jens Sehested 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 976 KB

The ultraviolet absorption spectrum of CF3CFC102 and the kinetics of the self reactions of CF3CFC1 and CF3CFC102 radicals and the reactions of CFzCFC102 with NO and NO2 have been studied in the gas phase at 295 K by pulse radiolysis/transient UV absorption spectroscopy. The UV absorption cross secti

Reactions of CF2 carbene with Br2, Cl2 a

Reactions of CF2 carbene with Br2, Cl2 and H2 studied by means of CO2 laser photolysis and infrared diode laser spectroscopy

✍ Ko-ichi Sugawara; Taisuke Nakanaga; Harutoshi Takeo; Chi Matsumura 📂 Article 📅 1987 🏛 Elsevier Science 🌐 English ⚖ 277 KB

Reactions of CF2 carbene, generated by infrared CO1 laser photolysis of CHClF>, with Br2, Cl2 and Hz were investigated using infrared diode laser spectroscopy. Absolute rate constants at about 550 K for the reactions with Br2 and Cl\* were found to be (2.7+0.9)x10-I5 and (3Sf l.3)x10-'5cm3molecule '

A kinetic study of the reaction of fluor

A kinetic study of the reaction of fluorine atoms with CH3F, CH3Cl, CH3Br, CF2H2, CO, CF3H, CF3CHCl2, CF3CH2F, CHF2CHF2, CF2ClCH3, CHF2CH3, and CF3CF2H at 295 ± 2 K

✍ Timothy J. Wallington; Michael D. Hurley; Jichun Shi; M. Matti Maricq; Jens Sehe 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 807 KB

A variety of relative and absolute techniques have been used to measure the reactivity of fluorine atoms with a series of halogenated organic compounds and CO. The following rate constants were derived, in units of cm3 molecule-' s-l: CH3F, (3.7 2 0.8) X CH3C1, (3.3 2 0.71 X 10 -'I; CH3Br, (3.0 2 0.

UV absorption spectrum, and kinetics and

UV absorption spectrum, and kinetics and mechanism of the self reaction of CF3CF2O2 radicals in the gas phase at 295 K

✍ Jens Sehested; Thomas Ellermann; Ole John Nielsen; Timothy J. Wallington; Michae 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 950 KB

The ultraviolet absorption spectrum, kinetics, and mechanism of the self reaction of CF3CF202 radicals have been studied in the gas phase a t 295 K. Two techniques were used; pulse radiolysis W absorption to measure the spectrum and kinetics, and long-path length FTIR spectroscopy to identify and qu

Highly selective 13C separation by CO2-l

Highly selective 13C separation by CO2-laser-induced IRMPD of CF2Cl2/HI and CF2ClBr/HI mixtures

✍ Peihua Ma; Kyoko Sugita; Shigeyoshi Arai 📂 Article 📅 1987 🏛 Elsevier Science 🌐 English ⚖ 536 KB

The COz-laser-induced IRMPD of CF2C12/HI and CF\*ClBr/HI mixtures produced "C-enriched CF,HCI. In CF#&/HI mixtures, the CF,HCI underwent secondary IRMPD in the continuing pulse irradiation at the same wavenumber and fluence, yielding CFzHz with a "C content of 97%. Because of efficient decomposition