Pulsed valve addition of collision and reagent gases in Fourier transform mass spectrometry

Carlin, T. J.; Freiser, Ben S.

doi:10.1021/ac00254a035

Cited by 144 publications

(65 citation statements)

References 20 publications

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“…The reactant gas, propene or 1-butene, was pulsed in using a General Valve Co. Series 9 pulsed solenoid valve 19 with an orifice of 0.020 in. i.d.…”

Section: Methodsmentioning

confidence: 99%

Reactions of Nb_n⁺ (n = 1−15) with Propene and 1-Butene: Product Distribution as a Function of Cluster Size

1996

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The reactions of niobium cluster cations (Nb n + , n ) 1-15) with propene and 1-butene are studied using Fourier transform ion cyclotron resonance (FTICR) mass spectrometry. Reaction product distributions as a function of cluster size are presented. The branching ratios of paths corresponding to single and multiple dehydrogenations in the primary reactions are reported and interpreted qualitatively in terms of the bonding between the ligands and the metal cluster centers. The bonding in products of higher order reactions are addressed by discussing the trends in the reaction saturation limits and the presence of C-C bond cleavage products in some reactions.

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“…The reactant gas, propene or 1-butene, was pulsed in using a General Valve Co. Series 9 pulsed solenoid valve 19 with an orifice of 0.020 in. i.d.…”

Section: Methodsmentioning

confidence: 99%

Reactions of Nb_n⁺ (n = 1−15) with Propene and 1-Butene: Product Distribution as a Function of Cluster Size

1996

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“…Nb2c6&+ reacts with C2D4 by elimination of D2 or HD, reactions 27 and 28, respectively. A proposed reaction 67% Nb2CeH4D2' + D2 (27) NbpCeH3D3+ + HD (28) NbzCsH4' 5L…”

Section: Resultsmentioning

confidence: 99%

Reactions of Nbn+ (n = 2-6) with Ethylene in the Gas Phase: Collision-Induced Dissociation Studies of Ionic Products

Jiao¹,

Freiser²

1995

J. Phys. Chem.

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The gas-phase reactions of Nb,+ (n = 2-6) with C2& are studied by Fourier transform mass spectrometry. Collision-induced dissociation (CID) and ion-molecule reactions are used to probe the product ion structures.The sequential reactions of N b 2 + are believed to involve ligand coupling, while for the larger clusters this mechanism is less important. The bonding between the Nb atoms and the C atoms of the ligand in the product ions becomes stronger with increasing cluster size. One of the major product ions from the reaction of Nb4+ with ethylene, Nb4C4+, is especially stable and believed to be the distorted 2 x 2 x 2 cubic "nanocrystal" structure observed in supersonic expansions. The thermochemical limits, Do(Nb,+ -CZ) L 186.3 kcaYmol (n = 3-6), were derived on the basis of the observation of the complete dehydrogenation of ethylene.

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“…Samples were introduced into the cell through a Varian leak valve or a pulsed valve (General Valve Corporation Series 9 solenoid pulsed valve). 12 The neutral reagents for ion-molecule reactions were pulsed into the cell. The ion-molecule reaction time was varied between 200-500 ms to ensure the observation of reaction products.…”

Section: Methodsmentioning

confidence: 99%

A gas-phase study of ligand effects on the reactivity of organometallic distonic ion Fe(p-benzyne)+˙

Chen

Poehlein

et al. 1999

Rapid Commun. Mass Spectrom.

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Pulsed valve addition of collision and reagent gases in Fourier transform mass spectrometry

Cited by 144 publications

References 20 publications

Reactions of Nb_n⁺ (n = 1−15) with Propene and 1-Butene: Product Distribution as a Function of Cluster Size

Reactions of Nb_n⁺ (n = 1−15) with Propene and 1-Butene: Product Distribution as a Function of Cluster Size

Reactions of Nbn+ (n = 2-6) with Ethylene in the Gas Phase: Collision-Induced Dissociation Studies of Ionic Products

A gas-phase study of ligand effects on the reactivity of organometallic distonic ion Fe(p-benzyne)+˙

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Pulsed valve addition of collision and reagent gases in Fourier transform mass spectrometry

Cited by 144 publications

References 20 publications

Reactions of Nbn+ (n = 1−15) with Propene and 1-Butene: Product Distribution as a Function of Cluster Size

Reactions of Nbn+ (n = 1−15) with Propene and 1-Butene: Product Distribution as a Function of Cluster Size

Reactions of Nbn+ (n = 2-6) with Ethylene in the Gas Phase: Collision-Induced Dissociation Studies of Ionic Products

A gas-phase study of ligand effects on the reactivity of organometallic distonic ion Fe(p-benzyne)+˙

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Reactions of Nb_n⁺ (n = 1−15) with Propene and 1-Butene: Product Distribution as a Function of Cluster Size

Reactions of Nb_n⁺ (n = 1−15) with Propene and 1-Butene: Product Distribution as a Function of Cluster Size