Selected ion flow tube studies of the atomic oxygen radical cation reactions with ethylene and other alkenes

Fishman, Vyacheslav N.; Graul, Susan T.; Grabowski, Joseph J.

doi:10.1016/s1387-3806(98)14160-x

Cited by 5 publications

(12 citation statements)

References 41 publications

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“…In the earth's ionosphere O + is primarily formed through the absorption of UV light by either atomic or molecular oxygen. 1 At altitudes of B90-150 km, NO + and O 2 + are the major ionic species, but O + becomes the dominant ion at higher elevations, making up as much as 90% of the ionic constituents at low-earth orbits. O + reaches peak concentrations at B300 km in altitude with a density of about 4 Â 10 5 particles cm À3 .…”

Section: Introductionmentioning

confidence: 99%

“…O + reaches peak concentrations at B300 km in altitude with a density of about 4 Â 10 5 particles cm À3 . 1,2 In addition to its relevance in atmospheric chemistry, this ion also participates in many high energy processes such as plasma etching and combustion. [2][3][4] Despite its fundamental importance in a variety of systems, there are many ion-neutral reactions of O + that have not yet been studied.…”

Section: Introductionmentioning

confidence: 99%

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Gas-phase reactions of the atomic oxygen radicalcation with halogenated compounds

Nichols

Yang

Worker

et al. 2013

Phys. Chem. Chem. Phys.

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Rate constants and product distributions have been measured for the reactions of O(+)˙((4)S) with the methyl halides (CH(3)F, CH(3)Cl, CH(3)Br, CH(3)I) and three perfluorinated compounds (CF(4), SF(6), SF(5)CF(3)) at 300 K in a flowing afterglow-selected ion flow tube (FA-SIFT). The reactions occur with high efficiency, despite the necessity for spin conversion in some processes. The mechanisms include charge transfer, atom abstraction, and fragmentation reactions. Computational modeling was carried out to provide insight into these processes.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Gas-phase reactions of the atomic oxygen radicalcation with halogenated compounds

Nichols

Yang

Worker

et al. 2013

Phys. Chem. Chem. Phys.

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“…with alkenes give high rate constants and extensive fragmentation of the hydrocarbon (`30% of the molecular ion was seen in each case). 110 Other O . product channels include hydride abstraction (HO .…”

Section: A Atmospheric and Interstellar Chemistrymentioning

confidence: 99%

“…In other work with simple cations, Grabowski and co-workers 110,111 studied the reactions of alkenes with O . , OH and H 2 O .…”

Section: A Atmospheric and Interstellar Chemistrymentioning

confidence: 99%

10 Gas phase organic ion–molecule reaction chemistry

Feng

Gronert

2000

Annu. Rep. Prog. Chem., Sect. B

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“…They include flow instruments such as flowing afterglow mass spectrometers [152,193,[279][280][281][282] and selected-ion flow tubes (SIFT) [283][284][285], ion trapping instruments including Fourier transform ion cyclotron resonance (FT-ICR) [286][287][288][289] and quadrupole ion trap (QIT) mass spectrometers [290,291], tandem mass spectrometers such as multiple-sector tandem mass spectrometers [292], guided ion beam tandem mass spectrometers [293][294][295][296], triple quadrupoles (QqQ, Q signifies the first or third quadrupole and q refers to the collision/reaction quadrupole cell) [297,298] and pentaquadrupoles [299][300][301]. Many mass spectrometers and methods for their operation have been developed to study ion/molecule reactions under controlled conditions.…”

Section: Low-pressure Ion/molecule Reactionsmentioning

confidence: 99%

Historical Perspectives in the Study of Ion Chemistry by Mass Spectrometry: From the Gas Phase to Solution

Chen

2009

Reactive Intermediates

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Mass spectrometry (MS), originally developing from nineteenth-century physics, has a history dating back more than a hundred years. Since then, the technique has advanced enormously. The advent of new methods of ion production, novel mass analyzers, and new tools for data processing has made it possible to analyze almost all chemical entities, ranging from small organic compounds to large biological molecules and whole living cells/tissues. Today, mass spectrometry has become one of the most powerful and popular modern physical-chemical methods to study the details of elemental and molecular processes in nature. Because of its unparalleled capability of providing information on molecular weight, chemical structures, isotopic content, and even molecular dynamics, mass spectrometry is playing an increasingly significant role in the chemical and life sciences. As a traditional analytical tool and a booming technology for biomedicine, it has found extensive applications in nearly every discipline involving chemical analysis such as petroleum prospecting and refining, food processing, drug discovery, metablomics, genomics, proteomics and structural biology, as well as the environment, public safety, and industrial process monitoring. Along with the development of mass spectrometric technology, the chemistry of gaseous ions has been explored by the study of unimolecular and collision-induced dissociation (CID) [1][2][3][4] and by the study of ion/molecule reactions [2,[5][6][7][8][9][10][11][12][13][14][15][16][17] and ion/ion reactions [18][19][20][21][22][23][24][25][26] in the gas phase. The study of gas-phase ion chemistry has both fundamental and practical significance because it not only provides diverse information on ion reactivity, thermochemistry, and dynamics, but it also forms one basis for chemical analysis using mass spectrometry. In addition, the ion reactivity examined in the isolated gas-phase environment of mass spectrometers has a strong connection with reaction chemistry in solution, as well as contrasting with it. Many important ionic intermediates which are hard to probe in the condensed phase can be easily accessed in the gas phase. Therefore, mass spectrometry has also become an important and unique tool for the mechanistic investigation of organic reactions (particularly organometallic reactions), since soft electrospray ionization (ESI) technology [27, 28] became available. In this regard, there is a large body of work in the literature, which is reviewed in this book. j37This chapter will provide an overview of the history and the current state of the art of mass spectrometry-based study of ion chemistry, specifically of ion/molecule reactions. As this is a broad topic with an immense literature (over 15 000 papers), our emphasis will be placed on the applications of ESI-MS coupled with gas-phase ion/ molecule reactions and tandem mass spectrometry in organometallic chemistry, including probing key intermediates and reaction pathways of organometallic reactions in solution. We will start with...

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Selected ion flow tube studies of the atomic oxygen radical cation reactions with ethylene and other alkenes

Cited by 5 publications

References 41 publications

Gas-phase reactions of the atomic oxygen radicalcation with halogenated compounds

Gas-phase reactions of the atomic oxygen radicalcation with halogenated compounds

10 Gas phase organic ion–molecule reaction chemistry

Historical Perspectives in the Study of Ion Chemistry by Mass Spectrometry: From the Gas Phase to Solution

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