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Title: Probing the interaction between the encapsulated water molecule and the fullerene cages in H2O@C60− and H2O@C59N−
Authors: Zhu, Guo-Zhu
Liu, Yuan
Hashikawa, Yoshifumi
Zhang, Qian-Fan
Murata, Yasujiro  kyouindb  KAKEN_id
Wang, Lai-Sheng
Author's alias: 橋川, 祥史
村田, 靖次郎
Issue Date: 7-Jul-2018
Publisher: Royal Society of Chemistry (RSC)
Journal title: Chemical Science
Volume: 9
Issue: 25
Start page: 5666
End page: 5671
Abstract: We report a high-resolution photoelectron imaging study of cryogenically-cooled H2O@C60− and H2O@C59N− endohedral fullerene anions. The electron affinity (EA) of H2O@C60 is measured to be 2.6923 ± 0.0008 eV, which is 0.0088 eV higher than the EA of C60, while the EA of H2O@C59N is measured to be 3.0058 eV ± 0.0007 eV, which is 0.0092 eV lower than the EA of C59N. The opposite shifts are found to be due to the different electrostatic interactions between the encapsulated water molecule and the fullerene cages in the two systems. There is a net coulombic attraction between the guest and host in H2O@C60−, but a repulsive interaction in H2O@C59N−. We have also observed low-frequency features in the photoelectron spectra tentatively attributed to the hindered rotational excitations of the encapsulated H2O molecule, providing further insights into the guest–host interactions in H2O@C60− and H2O@C59N−.
Rights: © The Royal Society of Chemistry 2018. This Open Access Article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
URI: http://hdl.handle.net/2433/234996
DOI(Published Version): 10.1039/c8sc01031e
PubMed ID: 30062000
Appears in Collections:Journal Articles

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