Matches in SemOpenAlex for { <https://semopenalex.org/work/W1996337441> ?p ?o ?g. }
- W1996337441 abstract "We present a detailed experimental and theoretical investigation of formaldehyde photodissociation to H2 and CO following excitation to the 2141 and 2143 transitions in S1. The CO velocity distributions were obtained using dc slice imaging of single CO rotational states (v=0, jCO=5–45). These high-resolution measurements reveal the correlated internal state distribution in the H2 cofragments. The results show that rotationally hot CO (jCO∼45) is produced in conjunction with vibrationally “cold” H2 fragments (v=0–5): these products are formed through the well-known skewed transition state and described in detail in the accompanying paper. After excitation of formaldehyde above the threshold for the radical channel (H2CO→H+HCO) we also find formation of rotationally cold CO (jCO=5–28) correlated to highly vibrationally excited H2 (v=6–8). These products are formed through a novel mechanism that involves near dissociation followed by intramolecular H abstraction [D. Townsend et al., Science 306, 1158 (2004)], and that avoids the region of the transition state entirely. The dynamics of this “roaming” mechanism are the focus of this paper. The correlations between the vibrational states of H2 and rotational states of CO formed following excitation on the 2143 transition allow us to determine the relative contribution to molecular products from the roaming atom channel versus the conventional molecular channel." @default.
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- W1996337441 date "2006-07-24" @default.
- W1996337441 modified "2023-10-16" @default.
- W1996337441 title "The roaming atom pathway in formaldehyde decomposition" @default.
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- W1996337441 doi "https://doi.org/10.1063/1.2202241" @default.
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