2008
DOI: 10.1063/1.2994734
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Dynamics of reactions O(D1)+C6H6 and C6D6

Abstract: The reaction between O((1)D) and C(6)H(6) (or C(6)D(6)) was investigated with crossed-molecular-beam reactive scattering and time-resolved Fourier-transform infrared spectroscopy. From the crossed-molecular-beam experiments, four product channels were identified. The major channel is the formation of three fragments CO+C(5)H(5)+H; the channels for formation of C(5)H(6)+CO and C(6)H(5)O+H from O((1)D)+C(6)H(6) and OD+C(6)D(5) from O((1)D)+C(6)D(6) are minor. The angular distributions for the formation of CO and… Show more

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Cited by 9 publications
(27 citation statements)
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“…It should be noted that dissociation of C 6 H 5 O to C 5 H 5 + CO is energetically not possible for O­( 3 P) because of a high barrier of ca. 50 kcal/mol (see Figure ) and negligible also for O­( 1 D) . Furthermore, we note that previous CMB work on the reactions of both O­( 3 P) and O­( 1 D) with benzene has shown that some phenol adduct survives until the detector for the O­( 3 P) reaction but not for the O­( 1 D) reaction .…”
Section: Resultsmentioning
confidence: 58%
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“…It should be noted that dissociation of C 6 H 5 O to C 5 H 5 + CO is energetically not possible for O­( 3 P) because of a high barrier of ca. 50 kcal/mol (see Figure ) and negligible also for O­( 1 D) . Furthermore, we note that previous CMB work on the reactions of both O­( 3 P) and O­( 1 D) with benzene has shown that some phenol adduct survives until the detector for the O­( 3 P) reaction but not for the O­( 1 D) reaction .…”
Section: Resultsmentioning
confidence: 58%
“…The resulting collision energy was 8.2 kcal/mol. The small percentage of O­( 1 D) present in the atomic oxygen beam was expected to contribute significantly to the measured product distributions because the reaction cross section of O­( 3 P) with benzene is considerably lower than that of O­( 1 D), as the O­( 3 P) + C 6 H 6 reaction is characterized by a very significant entrance energy barrier of about 4 kcal/mol while the O­( 1 D) reaction is barrierless …”
Section: Methodsmentioning
confidence: 99%
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“…As can be seen, the m / z = 66 angular distribution exhibits a prominent peak, centered at the CM angle, superimposed to two broad wings. The central peak reflects the small amount of phenol adduct from the O­( 3 P) reaction (no phenol was observed from the O­( 1 D) reaction , ) that fragments in the ionizer to C 5 H 6 + , and its distribution reflects the centroid distribution (see the Supporting Information). In contrast, the two side wings reflect the formation of the C 5 H 6 product detected at its parent mass (66 amu) from both O­( 3 P) and O­( 1 D) reactions (see the Supporting Information).…”
mentioning
confidence: 99%