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2 edition of Infrared photodissociation of gas phase ions found in the catalog.

Infrared photodissociation of gas phase ions

Michael Adetunji Odeneye

Infrared photodissociation of gas phase ions

single photon and multiphoton events

by Michael Adetunji Odeneye

  • 261 Want to read
  • 6 Currently reading

Published .
Written in English


Edition Notes

D.Phil. 2000.

Statement[by] Michael Adetunji Odeneye.
SeriesSussex theses ; S 4901
ID Numbers
Open LibraryOL18574233M

References. Go To: Top, Vibrational and/or electronic energy levels, Notes Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All. Infrared photodissociation action spectra of protonated ammonia cluster ions, N H4+ (N H3) n (n=), were measured in the range of cm-1 by using a tunable infrared free electron by:

Negative-Ion Photoelectron Spectroscopy, Gas-Phase Acidity, and Thermochemistry of the Peroxyl Radicals CH 3 OO and CH 3 CH 2 OO. Journal of the American Chemical Society , - (). Journal Article. Gas phase ions were trapped in the FTMS cell and irradiated with infrared light for a period of time, typically seconds, and the fragmentation of the parent ions was observed. Fragmentation was plotted vs. infrared wavelength to generate infrared action : Jacob C. Schmidt.

Electronic photodissociation spectra and decay pathways of gas-phase IrBr ACS National Meeting Book of Abstracts. ; Infrared spectra of SF6-center dot HCOOH center dot Ar-n (n=): Infrared triggered reaction and Ar-induced reactive inhibition. Journal of Chemical Physics.   Introduction. Among the mononuclear molybdenum enzymes, the DMSO reductase family is the most diverse in terms of their structure and function. Members of this family are involved in global C, S, N, and As cycling; for example, formate dehydrogenase catalyzes the transformation of formate to CO 2, DMSO reductase catalyzes the reduction of dimethyl sulfoxide (DMSO) to dimethyl sulfide Cited by: 7.


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Infrared photodissociation of gas phase ions by Michael Adetunji Odeneye Download PDF EPUB FB2

Previous gas-phase methods for infrared photodissociation spectroscopy (IRPD) require sample volatility. Our method instead uses electrospray ionization to introduce Infrared photodissociation of gas phase ions book large nonvolatile molecules into a Fourier transform mass spectrometer, where extended (>15 s) ion storage makes possible high sensitivity spectral measurements with an OPO laser over a range of − cm @article{osti_, title = {Infrared Multiple-Photon Photodissociation of Gas-Phase Group II Metal-Nitrate Anions}, author = {Leavitt, C M and Oomens, Jos and Dain, R P and Steill, J and Groenewold, G S and Van Stipdonk, M J}, abstractNote = {Infrared spectra of gas-phase metal-nitrate anions M(NO{sub 3}){sub 3}{sup -}, where M = Mg{sup 2+}, Ca{sup 2+}, Sr{sup 2+} and Ba{sup 2+}, were.

Infrared spectroscopy of gas phase organometallic ions Introduction. The potential of FTICR studies for gas phase organometallic chemistry had been realized earlier on, and several reviews have been published on this subject. Transition metal containing ions in the gas phase offer the opportunity to probe the intrinsic chemical and Cited by: Infrared multiple-photon photodissociation of gas-phase group II metal-nitrate anions Article in International Journal of Mass Spectrometry (1) June with 4 Reads How we measure.

This infrared photodissociation spectroscopy allows for the measurement of vibrational spectra of (unstable) species that can only be prepared in the gas phase. Such species include molecular ions but also neutral species like metal clusters that can be gently ionized after interaction with the IR light for their mass spectrometric d: Blackbody infrared radiative.

E-Mail Address. Password. Forgotten Password. Remember Me. Infrared spectra of gas-phase metal-nitrate anions M(NO 3) 3 −, where M = Mg 2+, Ca 2+, Sr 2+ and Ba 2+, were recorded by infrared multiple-photon dissociation (IRMPD) issociation of each of the precursors produces NO 3 − through the elimination of a neutral M(NO 3) 2 unit.

An absorption pattern characteristic of metal nitrates is observed in the IRMPD spectra, including Cited by:   Mass-selected ions are excited in the infrared region of the spectrum with a tunable IR optical parametric oscillator laser system to measure photodissociation spectroscopy in the – cm −1 region.

Infrared band patterns, combined with structures and spectra predicted by density functional theory, reveal the coordination and solvation Author: Michael A.

Duncan. The gas-phase structure of protonated β-methylaminoalanine was investigated using infrared multiple photon dissociation spectroscopy in the C-H, N-H, O-H stretching region ( cm-1) and.

Infrared spectra of mass-selected homoleptic dinuclear iron carbonyl cluster anions Fe 2 (CO) n − (n = 4–9) are measured via infrared photodissociation spectroscopy in the carbonyl stretching frequency region.

The cluster anions are produced via a laser vaporization supersonic cluster source. Density functional calculations have been performed and the calculated vibrational spectra are Cited by: @article{osti_, title = {Infrared Spectroscopy of Transition Metal-Molecular interactions in the Gas Phase}, author = {Duncan, Michael A.}, abstractNote = {Transition metal-molecular complexes produced in a molecular beam are mass-selected and studied with infrared laser photodissociation spectroscopy.

Metal complexes with carbon monoxide, carbon dioxide, nitrogen, water, acetylene or. Infrared spectra of mass-selected homoleptic nickel carbonyl cluster cations including dinuclear Ni2(CO)7+ and Ni2(CO)8+, trinuclear Ni3(CO)9+ and tetranuclear Ni4(CO)11+ are measured via infrared photodissociation spectroscopy in the carbonyl stretching frequency region.

The structures are established by co Spectroscopy and dynamics of medium-sized molecules and clusters. Gas Phase Inorganic Chemistry focuses on the reactions of metal ions and metal clusters, and on the study of these species using the available modern spectroscopic methods.

Three of the twelve chapters cover the chemistry of ionic monometal transition metal ions and the chemistry of these species with small diatomics and model : Springer US. ConspectusThe interrogation of reaction intermediates is key for understanding chemical reactions; however their direct observation and study remains a considerable challenge.

Mass spectrometry is one of the most sensitive analytical techniques, and its use to study reaction mixtures is now an established practice. However, the information that can be obtained is limited to elemental analysis.

Infrared Photodissociation of Biomolecular Ions The primary benefit of measuring infrared spectra on biomolecular ions derives from the compositional and structural information based on diagnostic vibrations. cold spectroscopy methods provide extremely detailed structural information on gas-phase conformations.

This chapter closes on an Cited by: 2. COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.

Infrared spectra of gas-phase metal-nitrate anions M(NO 3) 3 −, where M = Mg 2+, Ca 2+, Sr 2+ and Ba 2+, were recorded by infrared multiple-photon dissociation (IRMPD) spectroscopy.

Photodissociation of each of the precursors produces NO 3 − through the elimination of a neutral M(NO 3) 2 unit. An absorption pattern characteristic of metal nitrates is observed in the IRMPD spectra. Infrared photodissociation spectroscopy of protonated neurotransmitters in the gas phase J.P.

Simons To cite this version: J.P. Simons. Infrared photodissociation spectroscopy of protonated neurotransmitters in the gas phase. Molecular Physics, Taylor & Francis,(), pp ￿/￿. ￿hal￿Cited by: In this review, we present an overview of our recent work on the infrared spectroscopy of mass-selected gas-phase molecular ions.

The ions are stored and isolated in a quadrupole ion trap where they are investigated with infrared multiple photon dissociation spectroscopy using a free electron laser (FEL).

Gas Phase Ion Chemistry, Volume 3: Ions and Light discusses how ions are formed by electron impact, ion–molecule reactions, or electrical discharge.

This book discusses the use of light emitted by excited molecules to characterize either the chemistry that formed the excited ion, the structure of the excited ion, or Edition: 1.

Gas Phase Inorganic Chemistry focuses on the reactions of metal ions and metal clusters, and on the study of these species using the available modern spectroscopic methods. Three of the twelve chapters cover the chemistry of ionic monometal transition metal ions and the chemistry of these species with small diatomics and model organics.Molecular ions of n‐butylbenzene trapped in the ion cyclotron resonance ion trap were dissociated by cw CO 2 ‐laser irradiation at pressures near 1×10 −8 Torr where collisions play a negligible role in the kinetics.

The dissociation as a function of time after laser onset showed a well‐defined induction time τ ind, followed by exponential decay of a parent ion with first‐order rate Cited by:   Blackbody Infrared Radiative Dissociation. Thermal Dissociation Kinetics. For all precursor ions, plots of ln [M +]/[∑(M + + F +)] vs time (M = precursor ion; F = fragment ions) are linear at long times indicating that these ions have reached a steady state and undergo unimolecular these data, rate constants (k) as a function of cell temperature are by: