RT Journal Article
T1 Photodissociation of pyrrole-ammonia clusters below 218 nm: Quenching of statistical decomposition pathways under clustering conditions
A1 Rodríguez, Javier
A1 González, Miguel
A1 Rubio-Lago, Luis
A1 Bañares Morcillo, Luis
AB The excited state hydrogen transfer (ESHT) reaction in pyrrole-ammonia clusters (PyH·(NH3)n, n = 2–5) at excitation wavelengths below 218 nm down to 199 nm, has been studied using a combination of velocity map imaging and non-resonant detection of the NH4(NH3)n−1 products. Special care has been taken to avoid evaporation of solvent molecules from the excited clusters by controlling the intensity of both the excitation and probing lasers. The high resolution translational energy distributions obtained are analyzed on the base of an impulsive mechanism for the hydrogen transfer, which mimics the direct N−H bond dissociation of the bare pyrrole. In spite of the low dissociation wavelengths attained (∼200 nm) no evidence of hydrogen-loss statistical dynamics has been observed. The effects of clustering of pyrrole with ammonia molecules on the possible statistical decomposition channels of the bare pyrrole are discussed
PB American Institute of Physics
SN 0021-9606
YR 2012
FD 2012
LK https://hdl.handle.net/20.500.14352/92774
UL https://hdl.handle.net/20.500.14352/92774
LA eng
NO J. D. Rodríguez, M. G. González, L. Rubio-Lago, L. Bañares; Photodissociation of pyrrole-ammonia clusters below 218 nm: Quenching of statistical decomposition pathways under clustering conditions. J. Chem. Phys. 7 September 2012; 137 (9): 094305. https://doi.org/10.1063/1.4749384
NO Ministerio de Ciencia e Innovación (España)
DS Docta Complutense
RD 7 oct 2024