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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Excited-state intermolecular proton transfer reactions of 7-azaindole(MeOH) _n (n = 1-3) clusters in the gas phase: On-the-fly dynamics simulation
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Excited-state intermolecular proton transfer reactions of 7-azaindole(MeOH) _n (n = 1-3) clusters in the gas phase: On-the-fly dynamics simulation

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摘要

Ultrafast excited-state intermolecular proton transfer (PT) reactions in 7-azaindole(methanol) _n (n = 1-3) 7AI(MeOH) _n=1-3 complexes were performed using dynamics simulations. These complexes were first optimized at the RI-ADC(2)/SVP-SV(P) level in the gas phase. The ground-state structures with the lowest energy were also investigated and presented. On-the-fly dynamics simulations for the first-excited state were employed to investigate reaction mechanisms and time evolution of PT processes. The PT characteristics of the reactions were confirmed by the nonexistence of crossings between S _(ππ*) and S _(πσ*) states. Excited-state dynamics results for all complexes exhibit excited-state multiple-proton transfer (ESmultiPT) reactions via methanol molecules along an intermolecular hydrogen-bonded network. In particular, the two methanol molecules of a 7AI(MeOH) _2 cluster assist the excited-state triple-proton transfer (ESTPT) reaction effectively with highest probability of PT.

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