Resonant two-photon mass-analyzed threshold ionization of 2,5-difluoroaniline

Huang, Wei; Huang, Po Sheng; Hu, Ching Han; Tzeng, Wen Bih

doi:10.1016/j.cplett.2013.06.053

Cited by 14 publications

(7 citation statements)

References 25 publications

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“…These data allow us to propose an additivity rule which associates with the energy shifts in the E 1 and IE of 4C3FP. Similar findings have been reported for 3,4-difluoroaniline [43], 2,4-difluoroaniline [44], 2,5-difluoroaniline [45], 3-chloro-4-fluoroaniline [33], 4-chloro-3-fluoroaniline [46], 34DFP [18], and 3,4-difluoroanisole [47]. A weak substituentsubstituent interaction may be the key for a proper application of this rule.…”

Section: Transition Energy and Additivity Rulesupporting

confidence: 84%

Vibronic and cation spectroscopy of selected rotamers of 4-chloro-3-fluorophenol

Shivatare

Tzeng

2014

Molecular Physics

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We applied the two-colour resonant two-photon ionisation and mass-analysed threshold ionisation techniques to record the vibrationally resolved spectra of the selected rotamers and 35 Cl and 37 Cl isotopologues of 4-chloro-3-fluorophenol in the electronically excited S 1 and cationic ground D 0 states. The band origins of the S 1 ← S 0 electronic transition and the adiabatic ionisation energies of the cis and trans rotamers of 4-chloro-3-fluorophenol are determined to be 35,233 ± 2 and 35,405 ± 2 cm −1 , and 69,334 ± 5 and 69,460 ± 5 cm −1 , respectively. The electronic transition energies and general spectral features of the two isotopologues are nearly identical. Most of the observed active vibrations result from the inplane ring deformation and substituent-sensitive motions. The experimental data show that the frequency difference in the observed active vibrations of the rotamers and isotopologues depends on the nature, vibrational pattern, location, and relative orientation of the substituents.

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Section: Transition Energy and Additivity Rulesupporting

confidence: 84%

Vibronic and cation spectroscopy of selected rotamers of 4-chloro-3-fluorophenol

Shivatare

Tzeng

2014

Molecular Physics

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“…Very recently, the red-shift was confirmed from 4-chloro-3-fluoroaniline [14] and 2,5-difluoroaniline [15]. However, in order to rationalize the effects of halogen substituents, especially of Cl, on multisubstituted benzyl radicals, further spectroscopic observations of dichlorobenzyl radicals should be carried out.…”

Section: Introductionmentioning

confidence: 90%

Spectroscopic observation of jet-cooled 2,5-dichlorobenzyl radical generated by corona discharge

Yoon

Lee

2014

Chemical Physics Letters

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“…Information about the E1 of 2,5-difluorophenol is not available in literature. With the reported E1 and IEs of 2-fluorophenol [14][15][16] and 3-fluorophenol 15,17,18 and additivity rule on the transition energy 13,20 , we expect that the 1C-R2PI technique can be used to obtain the vibronic spectrum of 2,5-difluorophenol. As seen in Fig.…”

Section: Vibronic Spectrum Of 25-difluorophenolmentioning

confidence: 99%

“…In the present spectroscopic study, we choose 2,5-difluorophenol to learn the effects of substituent-ring and substituent-substituent interactions on molecular geometry, transition energy, and vibrational frequency. Although no optical spectrum of 2,5-difluorophenol has been reported, the existing experimental data of 2-fluorophenol 14 -16 , 2,4-difluorophenol 11,12 , 3-fluorophenol 15,17,18 , 4-fluorophenol 15,19 , 3,4-difluorophenol 13 , and 2,5-difluoroaniline 20 are useful for spectral assignment and interpretation.…”

Section: Introductionmentioning

confidence: 99%

Rotamers of 2, 5-Difluorophenol Studied Using Mass-Analyzed Threshold Ionization Spectroscopy

Wu¹,

Tzeng²,

TSAI³

et al. 2016

Acta Physico-Chimica Sinica

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We applied resonant two-photon ionization (R2PI) and mass-analyzed threshold ionization (MATI) techniques to record the vibronic and cationic spectra of 2,5-difluorophenol. The distinct bands at 36448 and 36743 cm -1 were confirmed as the origins of the S1 ← S0 electronic transition of the cis and trans rotamers, respectively. The corresponding adiabatic ionization energies were found to be 71164 and 71476 cm -1 for these two rotameric species. The observed spectral features mainly result from the in-plane ring deformation and substituent-sensitive bending vibrations. Spectral analysis suggests that the molecular geometry and vibrational coordinates of the cation in the D0 state resemble those of the neutral species in the S1 state for both cis and trans rotamers.

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Resonant two-photon mass-analyzed threshold ionization of 2,5-difluoroaniline

Cited by 14 publications

References 25 publications

Vibronic and cation spectroscopy of selected rotamers of 4-chloro-3-fluorophenol

Vibronic and cation spectroscopy of selected rotamers of 4-chloro-3-fluorophenol

Spectroscopic observation of jet-cooled 2,5-dichlorobenzyl radical generated by corona discharge

Rotamers of 2, 5-Difluorophenol Studied Using Mass-Analyzed Threshold Ionization Spectroscopy

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