Kenji Sakota, S. Harada, H. Sekiya
Jun 20, 2013
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Influential Citations
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Journal
Chemical Physics
Abstract
Abstract The hydrated N -(2-phenylethyl)acetamide (NPEA) clusters have been investigated in the gas phase. In the S 0 state of NPEA-(H 2 O) 2 , each of two water molecules is hydrogen-bonded to the NH and CO groups, respectively, whereas these two groups are bridged with three water molecules in the S 0 state of NPEA-(H 2 O) 3 . Upon photoionization of these clusters, mono- and dihydrated NPEA cluster cations are produced, where a water molecule is hydrogen-bonded to the NH group. In [NPEA-(H 2 O) 2 ] + , the other water molecule is located near the CO group of NPEA + due to a charge–dipole interaction. The electrons of NPEA + are redistributed to enhance the total intermolecular interactions, leading to weakening the hydrogen bond in [NPEA-(H 2 O) 2 ] + .