Observation of the à − X̃ Electronic Transition of the CF 3 O 2 Radical
نویسندگان
چکیده
The first observation of a sharp, structured electronic spectrum for a fluorinated alkyl peroxy radical is reported using the technique of cavity ringdown spectroscopy (CRDS). The T00 value for the Ã2A′ − X̃2A′′ transition of CF3O2 has been determined to be 6656(3) cm−1; values for à state vibrational frequencies have also been determined. Initial kinetic observations on CF3O2 have been carried out, using CRDS to monitor its concentration.
منابع مشابه
Cavity Ringdown Spectroscopy of the à − X̃ Electronic Transition of the CH 3 C ( O ) O 2 Radical
Cavity ringdown spectra of the near IR Ã2A′ − X̃2A′′ electronic transition of acetyl peroxy radical and its perdeutero analogue are reported. The electronic origin for the CH3C(O)O2 is observed at 5582.5(5) cm−1. Extensive ab initio calculations have been carried out to predict frequencies and help assign the electronic origin, observed vibrational hot bands and several à state vibrational frequ...
متن کاملSlow photoelectron velocity-map imaging of the i-methylvinoxide anion.
High-resolution photoelectron spectra of the i-methylvinoxide anion are obtained by slow electron velocity-map imaging. The transitions between the anion ground electronic state, X̃ (1)A', and the radical X̃ (2)A'', and à (2)A' states are measured. Franck-Condon simulations of the X̃ (2)A'' ← X̃ (1)A' transition are performed to aid in assigning peaks, yielding several vibrational frequencies for t...
متن کاملThe Jahn-Teller and Related Effects in the Cyclopentadienyl Radical, Part I: The Ab Initio Calculation of Spectroscopically Observable Parameters
Ab initio calculations are performed for the X̃2E′′ 1 and à 2A′′ 2 states of the cyclopentadienyl radical. An important goal of these calculations is to guide the analysis of the experimentally observed Ã2A′′ 2 -X̃ 2E′′ 1 electronic spectrum. Vibrational frequencies for both the X̃ and à state are reported. Large changes
متن کاملPhotodissociation spectroscopy and dynamics of CH3O and CD3O
The photodissociation spectroscopy and dynamics of the methoxy radical Ã(A1) r X̃(2E) transition have been investigated using fast radical beam photofragment translational spectroscopy. The à state of both CH3O and CD3O is observed to predissociate via curve crossings with one or more repulsive electronic states. The photofragment yield spectrum consists of the C-O stretch progression and combin...
متن کاملThe C-H bond dissociation energy of furan: photoelectron spectroscopy of the furanide anion.
Using photoelectron spectroscopy, we interrogate the cyclic furanide anion (C(4)H(3)O(-)) to determine the electron affinity and vibrational structure of the neutral furanyl radical and the term energy of its first excited electronic state. We present the 364-nm photoelectron spectrum of the furanide anion and measure the electron affinity of the X̃(2)A(') ground state of the α-furanyl radical t...
متن کامل