Variable temperature rate studies for the reaction H3O + + (C2H2)2 measured with a coaxial molecular beam radio frequency ring electrode ion trap

Mark A. Smith; Bing Yuan; Andrei Sanov

doi:10.1021/jp305936f

Variable temperature rate studies for the reaction H₃O ⁺ + (C₂H₂)₂ measured with a coaxial molecular beam radio frequency ring electrode ion trap

Mark A. Smith, Bing Yuan, Andrei Sanov

Research output: Contribution to journal › Article › peer-review

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Abstract

The independent molecule and ion temperature dependence of the rate coefficient for the H₃O⁺ and (C₂H ₂)₂ reaction producing C₂H₅O ⁺ are determined using a coaxial molecular beam radio frequency ring electrode ion trap (CoMB-RET). The H₃O⁺ temperature is varied from 25 to 170 K, while the equilibrated C₂H ₂/(C₂H₂)₂ beam temperatures sampled are 160, 180, 200, and 220 K. The rate coefficient of the H₃O ⁺ + (C₂H₂)₂ reaction is determined to be 4.0 × 10^-10 × (T_react/300) ^-2.5 in the reaction temperature range of T_react = 114-187 K. The H₃O⁺ and C₂H₂ radiative association reaction is found to have a rate coefficient below 1 × 10 ^-13 cm³·s^-1 at 187 K. This result is consistent with Herbst's experimental determination.

Original language	English (US)
Pages (from-to)	9466-9472
Number of pages	7
Journal	Journal of Physical Chemistry A
Volume	116
Issue number	38
DOIs	https://doi.org/10.1021/jp305936f
State	Published - Sep 27 2012

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Physical and Theoretical Chemistry

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@article{6187c5ce889c423285d7d5ab0e84c8d1,

title = "Variable temperature rate studies for the reaction H3O + + (C2H2)2 measured with a coaxial molecular beam radio frequency ring electrode ion trap",

abstract = "The independent molecule and ion temperature dependence of the rate coefficient for the H3O+ and (C2H 2)2 reaction producing C2H5O + are determined using a coaxial molecular beam radio frequency ring electrode ion trap (CoMB-RET). The H3O+ temperature is varied from 25 to 170 K, while the equilibrated C2H 2/(C2H2)2 beam temperatures sampled are 160, 180, 200, and 220 K. The rate coefficient of the H3O + + (C2H2)2 reaction is determined to be 4.0 × 10-10 × (Treact/300) -2.5 in the reaction temperature range of Treact = 114-187 K. The H3O+ and C2H2 radiative association reaction is found to have a rate coefficient below 1 × 10 -13 cm3·s-1 at 187 K. This result is consistent with Herbst's experimental determination.",

author = "Smith, {Mark A.} and Bing Yuan and Andrei Sanov",

year = "2012",

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T1 - Variable temperature rate studies for the reaction H3O + + (C2H2)2 measured with a coaxial molecular beam radio frequency ring electrode ion trap

AU - Smith, Mark A.

AU - Yuan, Bing

AU - Sanov, Andrei

PY - 2012/9/27

Y1 - 2012/9/27

N2 - The independent molecule and ion temperature dependence of the rate coefficient for the H3O+ and (C2H 2)2 reaction producing C2H5O + are determined using a coaxial molecular beam radio frequency ring electrode ion trap (CoMB-RET). The H3O+ temperature is varied from 25 to 170 K, while the equilibrated C2H 2/(C2H2)2 beam temperatures sampled are 160, 180, 200, and 220 K. The rate coefficient of the H3O + + (C2H2)2 reaction is determined to be 4.0 × 10-10 × (Treact/300) -2.5 in the reaction temperature range of Treact = 114-187 K. The H3O+ and C2H2 radiative association reaction is found to have a rate coefficient below 1 × 10 -13 cm3·s-1 at 187 K. This result is consistent with Herbst's experimental determination.

AB - The independent molecule and ion temperature dependence of the rate coefficient for the H3O+ and (C2H 2)2 reaction producing C2H5O + are determined using a coaxial molecular beam radio frequency ring electrode ion trap (CoMB-RET). The H3O+ temperature is varied from 25 to 170 K, while the equilibrated C2H 2/(C2H2)2 beam temperatures sampled are 160, 180, 200, and 220 K. The rate coefficient of the H3O + + (C2H2)2 reaction is determined to be 4.0 × 10-10 × (Treact/300) -2.5 in the reaction temperature range of Treact = 114-187 K. The H3O+ and C2H2 radiative association reaction is found to have a rate coefficient below 1 × 10 -13 cm3·s-1 at 187 K. This result is consistent with Herbst's experimental determination.

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JO - Journal of Physical Chemistry A

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Variable temperature rate studies for the reaction H₃O ⁺ + (C₂H₂)₂ measured with a coaxial molecular beam radio frequency ring electrode ion trap

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