12061-70-0Relevant articles and documents
Fine-structure spectrum of the FO radical, observed by far-infrared laser magnetic resonance
Tamassia, Filippo,Brown, John M.,Evenson, Kenneth M.
, p. 7273 - 7286 (1999)
The fine-structure transition 2∏1/2→ 2∏3/2 of the free radical FO has been detected by far-infrared laser magnetic resonance. All the observed transitions are magnetic dipole in character. The spin-orbit constant A0 has been determined experimentally; its value of -196.108686(50) cm-1 is consistent with previous estimates. The analysis of a set of 290 transitions leads to the determination of a number of molecular parameters including rotational, centrifugal distortion, spin-orbit, lambda-doubling, magnetic hyperfine, and Zeeman terms. All four magnetic hyperfine structure constants a, bF, c, d for the 19F nucleus have been determined and are discussed in terms of the expectation values of the appropriate operators over the electronic wave function.
The detection of the free radical FO (X 2Π3/2) by submillimeter-wave spectroscopy
Tamassia, Filippo,Brown, John M.,Saito, Shuji
, p. 5523 - 5526 (2000)
Pure rotational transitions of the free radical FO in its X 2Π3/2 ground electronic state have been detected by millimeter-wave spectroscopy. Four transitions, which are all magnetic dipole in character, were measured in the frequency region from 219 to 408 GHz. The radical was produced by a well-known efficient reaction between ozone and fluorine atoms. The high sensitivity available in the submillimeter-wave region and a very efficient production method were essential for the detection of rotational transitions in this radical, which many other people have attempted in the past. No electric dipole transitions have been detected in this experiment. The precision of parameters associated with the rotational motion of FO has been improved considerably by fitting these lines together with previous data. Moreover, the parity-dependent nuclear spin rotation term C'l has been determined for the first time. The r0 and re structures of FO have been revised accordingly.
Atmospheric chemistry of FO2 radicals. Reaction with Ch4, O3, No, No2, and Co at 295 K
Sehested,Sehested,Nielsen,Wallington
, p. 6731 - 6739 (1994)
Using pulse radiolysis combined with UV absorption spectroscopy, upper limits for the rate constants of the reaction of the FO2 radical with O3, CH4, and CO were determined to be -16, -15, and -16 cm3 molecule-1 s-1, respectively. The rate constants for the reactions of FO2 radicals with NO and NO2 were measured: FO2 + NO → FNO + O2 (10a); FO2 + NO2 → products (11). The rate constants for reactions 10 and 11 were determined to be (1.47 ± 0.08) × 10-12 and (1.05 ± 0.15) × 10-13 cm3 molecule-1 s-1, respectively. Reaction 10a was found to give FNO in a yield of 100 ± 14%. As a part of this work, an upper limit of the reaction of FO radicals with O3 was determined to be -12 cm3 molecule-1 s-1. Results are discussed in the context of the atmospheric chemistry of the FO2 radical and hydrofluorocarbons.
A Kinetic Investigation of the Reaction between F Atoms and Cl2O
Vogt, R.,Schindler, R. N.
, p. 1840 - 1843 (2007/10/02)
Chemical Kinetics / Elementary Reactions / Mass Spectrometry / Radicals Using a fast flow system with mass spectrometric detection the rate constant at room temperature for the title reaction was determined to be k(4) = 7.5(+/-0.8) * 10-11 cm3 molecule-1 s-1.The reaction appears to constitute a convenient dynamic ClO-source.
Branched chain reaction NF2 + O3
Bedzhanyan,Ioffe,Il'in,Selikhanovich,Gershenzon,Rozenshtein
, p. 1077 - 1080 (2008/10/08)
The branched chain reaction NF2 + O3 was detected in the 300-545 K range by means of electron paramagnetic and laser magnetic resonance (EPR/LMR). Super-equilibrium concentrations of FO radicals were recorded. A mechanism is proposed for the process based on the chain branching reaction FO + NF2 → 2F + FNO.
