Theoretical study of the X-ray absorption spectra of small formic acid clusters

Chemical Physics Letters Volume 419 Issue 4-6 Page 501-505 published_at 2006-02
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Title ( eng )
Theoretical study of the X-ray absorption spectra of small formic acid clusters
Creator
Yamanouchi Saiko
Yamamoto Keisuke
Tabayashi Kiyohiko
Source Title
Chemical Physics Letters
Volume 419
Issue 4-6
Start Page 501
End Page 505
Abstract
X-ray absorption spectra of small formic acid clusters, (HCOOH)n, n=1-4, were examined theoretically within the framework of density functional theory. For monomer, assignment of the first peak around 532 eV was consistent with the experiment, whereas the second peak around 535 eV was assigned to a mixture of three bands, O1s (C=O) →σ*(OH), O1s (OH) →π*(OH), and O1s (OH) →σ*(OH) excitations. For the dimer, relative intensities of the oscillator strengths of O1s (C=O) and O1s (OH) →σ*(OH) excitations decrease due to strong hydrogen bond formation, whereas those of O1s (C=O) and O1s (OH) →π*(C=O) excitations are insensitive to the dimerization.
NDC
Chemistry [ 430 ]
Language
eng
Resource Type journal article
Publisher
Elsevier
Date of Issued 2006-02
Rights
Copyright (c) 2006 Elsevier Ltd.
Publish Type Author’s Original
Access Rights open access
Source Identifier
[ISSN] 0009-2614
[DOI] 10.1016/j.cplett.2005.12.027
[NCID] AA00602122
[DOI] http://dx.doi.org/10.1016/j.cplett.2005.12.027