Infrared multiphoton dissociation of the nitrobenzene cation

Moini, Mehdi; Eyler, John R.

doi:10.1016/0168-1176(87)85009-7

Cited by 14 publications

(13 citation statements)

References 16 publications

(2 reference statements)

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“…This mechanism has been corroborated by an interesting experiment of Moini and Eyler. 121 They prepared nitrobenzene ions in the ground electronic state in an ICR cavity. The absorption of infra-red radiation from a C0 2 laser produced C 6 H 5 0 + and NO + ions, but no C 6 H 5 + ions.…”

Section: Examples Of Non-statistical Decaysmentioning

confidence: 99%

Photoelectron Photoion Coincidence Studies of Ion Dissociation Dynamics

Baer

Booze

Weitzel

1991

Vacuum Ultraviolet Photoionization and Photodissociation of Molecules and Clusters

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Section: Examples Of Non-statistical Decaysmentioning

confidence: 99%

Photoelectron Photoion Coincidence Studies of Ion Dissociation Dynamics

Baer

Booze

Weitzel

1991

Vacuum Ultraviolet Photoionization and Photodissociation of Molecules and Clusters

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“…Nitrobenzene has been among the most attractive systems studied in the fields of both ionic − and neutral − dissociation dynamics. A number of possible dissociation pathways of the nitrobenzene or its molecular ion have been the main motivation for such research efforts.…”

Section: Introductionmentioning

confidence: 99%

“…A number of possible dissociation pathways of the nitrobenzene or its molecular ion have been the main motivation for such research efforts. To understand the dynamics and mechanism of the nitrobenzene ion dissociation, various experimental techniques have been employed such as photoelectron-photoion-coincidence (PEPICO) spectrometry, − laser photodissociation, − infrared multiphoton dissociation (IRMPD), , and conventional mass spectrometry. − Also, the experimental rate constant and kinetic energy release data have been compared with theoretical predictions based on statistical theories such as Rice−Ramsperger−Kassel−Marcus (RRKM) theory, which is equivalent to quasi-equilibrium theory (QET or RRKM-QET) in ionic field and phase space theory …”

Section: Introductionmentioning

confidence: 99%

“…Production of C 6 H 5 + from nitrobenzene ion has been the focus of some research efforts since the first report by Panczel and Baer . In the continuous-wave IRMPD study of nitrobenzene ion by Moini and Eyler, C 6 H 5 + product was not observed at all even though its appearance energy was comparable to those for other product ions. This was taken as evidence for the excited state hypothesis mentioned above.…”

Section: Introductionmentioning

confidence: 99%

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Photodissociation Dynamics of Nitrobenzene Molecular Ion on a Nanosecond Time Scale

1996

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Photodissociation dynamics of nitrobenzene molecular ion has been investigated on a nanosecond time scale by mass-analyzed ion kinetic energy spectrometry. Photodissociation has been found to occur through various reaction channels. Three dissociation channels to C6H5O+, C6H5 +, and NO+ have been observed together with a consecutive dissociation to C5H5 + via C6H5O+. The photodissociation rate constant of the molecular ion and the kinetic energy release distributions in each channel have been determined. The rate constant of the second step of the consecutive reaction has been determined in real time also. It has been found that the direct bond cleavage to C6H5 + occurs in competition with the rearrangement processes to C6H5O+ and NO+ on a nanosecond time scale. Statistical theories have been used to gain insight into the dynamics of the reactions.

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“…Our laboratory has been actively engaged (12)(13)(14)(15) in coupling lasers to Fourier transform ion cyclotron resonance (FTICR) mass spectrometers (16-20) for a number of years. Of particular interest are the direct formation of ions by C02 1 Present address: IBM Technology Laboratory, Dept T37, P.O.…”

Section: Introductionmentioning

confidence: 99%

Multiphoton ionization of laser-desorbed neutral molecules in a Fourier transform ion cyclotron resonance mass spectrometer

Zimmerman¹,

Watson²,

Eyler³

1991

Anal. Chem.

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Resonant multiphoton Ionization of laser-desorbed nonvolatile samples has been achieved in a Fourier transform Ion cyclotron resonance (FTICR) mass spectrometer. The detection of Iron at the 100 ppm (parts per million) doping level In an InP compound semiconductor sample and the production of molecular Ions for a hexapeptlde have been observed in a modified FTICR analyzer cell. A unique three-laser experiment has been devised In which infrared multiphoton dissociation of dipeptlde ions, formed by resonant multiphoton ionization of laser-desorbed neutrals, Is performed.

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Infrared multiphoton dissociation of the nitrobenzene cation

Cited by 14 publications

References 16 publications

Photoelectron Photoion Coincidence Studies of Ion Dissociation Dynamics

Photoelectron Photoion Coincidence Studies of Ion Dissociation Dynamics

Photodissociation Dynamics of Nitrobenzene Molecular Ion on a Nanosecond Time Scale

Multiphoton ionization of laser-desorbed neutral molecules in a Fourier transform ion cyclotron resonance mass spectrometer

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