Dissimilar Dynamics of Coupled Water Vibrations

Thomas L. C. Jansen; Dan Cringus; Maxim S. Pshenichnikov

doi:10.1021/jp900480r

Dissimilar Dynamics of Coupled Water Vibrations

Thomas L. C. Jansen, Dan Cringus, Maxim S. Pshenichnikov^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

Dissimilar dynamics of coupled stretch vibrations of a water molecule are revealed by two-dimensional, IR correlation spectroscopy. These are caused by essentially non-Gaussian fluctuations of the electric field exerted by the environment on the individual OH stretch vibrations. Non-Gaussian statistics of the individual site frequency fluctuations results in distinctively different dephasing of the symmetric and asymmetric eigenmodes. This phenomenon can only be described if the assumption of Gaussian dynamics in the traditional theories is abandoned.

Original language	English
Pages (from-to)	6260-6265
Number of pages	6
Journal	The Journal of Physical Chemistry A
Volume	113
Issue number	22
DOIs	https://doi.org/10.1021/jp900480r
Publication status	Published - 4-Jun-2009

Keywords

ULTRAFAST INFRARED-SPECTROSCOPY
HYDROGEN-BOND DYNAMICS
2D IR SPECTROSCOPY
LIQUID H2O
SPECTRA
TIME
ENERGY
ACETONITRILE
EXCITATIONS
POTENTIALS

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title = "Dissimilar Dynamics of Coupled Water Vibrations",

abstract = "Dissimilar dynamics of coupled stretch vibrations of a water molecule are revealed by two-dimensional, IR correlation spectroscopy. These are caused by essentially non-Gaussian fluctuations of the electric field exerted by the environment on the individual OH stretch vibrations. Non-Gaussian statistics of the individual site frequency fluctuations results in distinctively different dephasing of the symmetric and asymmetric eigenmodes. This phenomenon can only be described if the assumption of Gaussian dynamics in the traditional theories is abandoned.",

keywords = "ULTRAFAST INFRARED-SPECTROSCOPY, HYDROGEN-BOND DYNAMICS, 2D IR SPECTROSCOPY, LIQUID H2O, SPECTRA, TIME, ENERGY, ACETONITRILE, EXCITATIONS, POTENTIALS",

author = "Jansen, {Thomas L. C.} and Dan Cringus and Pshenichnikov, {Maxim S.}",

year = "2009",

month = jun,

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doi = "10.1021/jp900480r",

language = "English",

volume = "113",

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journal = "The Journal of Physical Chemistry A",

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TY - JOUR

T1 - Dissimilar Dynamics of Coupled Water Vibrations

AU - Jansen, Thomas L. C.

AU - Cringus, Dan

AU - Pshenichnikov, Maxim S.

PY - 2009/6/4

Y1 - 2009/6/4

N2 - Dissimilar dynamics of coupled stretch vibrations of a water molecule are revealed by two-dimensional, IR correlation spectroscopy. These are caused by essentially non-Gaussian fluctuations of the electric field exerted by the environment on the individual OH stretch vibrations. Non-Gaussian statistics of the individual site frequency fluctuations results in distinctively different dephasing of the symmetric and asymmetric eigenmodes. This phenomenon can only be described if the assumption of Gaussian dynamics in the traditional theories is abandoned.

AB - Dissimilar dynamics of coupled stretch vibrations of a water molecule are revealed by two-dimensional, IR correlation spectroscopy. These are caused by essentially non-Gaussian fluctuations of the electric field exerted by the environment on the individual OH stretch vibrations. Non-Gaussian statistics of the individual site frequency fluctuations results in distinctively different dephasing of the symmetric and asymmetric eigenmodes. This phenomenon can only be described if the assumption of Gaussian dynamics in the traditional theories is abandoned.

KW - ULTRAFAST INFRARED-SPECTROSCOPY

KW - HYDROGEN-BOND DYNAMICS

KW - 2D IR SPECTROSCOPY

KW - LIQUID H2O

KW - SPECTRA

KW - TIME

KW - ENERGY

KW - ACETONITRILE

KW - EXCITATIONS

KW - POTENTIALS

U2 - 10.1021/jp900480r

DO - 10.1021/jp900480r

M3 - Article

SN - 1089-5639

VL - 113

SP - 6260

EP - 6265

JO - The Journal of Physical Chemistry A

JF - The Journal of Physical Chemistry A

IS - 22

ER -

Dissimilar Dynamics of Coupled Water Vibrations

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Keywords

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