Multiphoton ionization of pyrrole-water mixed clusters
Data(s) |
01/08/2001
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Resumo |
Multiphoton ionization of the hydrogen,bonded pyrrole-water clusters (C4H5N)(n)(H2O)(m) is studied with a reflectron-time of flight mass spectrometer at 355 mn. With increasing partial concentration of pyrrole in a gas mixture source, a series of poly-pyrrole-water binary-mixed cluster ions can be observed, including unprotonated cluster ions [(C4H5N)(x)(H2O)(y)](+), protonated cluster ions [(C4H5N)(x)(H2O)(y)](+) and dehydrogenated cluster ions [(C4H4N)(C4H5N)(x)(H2O)(y)](+). Ab initio calculations of their structures, bond strengths, charge distributions and reaction energies are carried out. Stable structures of these clusters are obtained from the calculations. A probable formation mechanism of the cluster ions [(C4H5N)(x)(H2O)(y)](+), [(C4H5N)(x)(H2O)(y)]H+ and [(C4H4N)(C4H5N)(x) (H2O)(y)](+) is supposed to be the ionization of clusters followed by dissociation. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
胡勇军;蔡永;吕日昌;王秀岩.Multiphoton ionization of pyrrole-water mixed clusters,自然科学进展,2001,11(8):569-577 |
Palavras-Chave | #multiphoton ionization #time of flight #ab initio #pyrrole #proton transfer |
Tipo |
期刊论文 |