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Title: Water network-mediated, electron-induced proton transfer in [C5H5N • (H2O)n] clusters

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.4931928· OSTI ID:1469362

The role of proton-assisted charge accommodation in electron capture by a heterocyclic electron scavenger is investigated through theoretical analysis of the vibrational spectra of cold, gas phase [Py·(H2O)n=3–5]– clusters. These radical anions are formed when an excess electron is attached to water clusters containing a single pyridine (Py) molecule in a supersonic jet ion source. Under these conditions, the cluster ion distribution starts promptly at n = 3, and the photoelectron spectra, combined with vibrational predissociation spectra of the Ar-tagged anions, establish that for n > 3, these species are best described as hydrated hydroxide ions with the neutral pyridinium radical, PyH(0), occupying one of the primary solvation sites of the OH. The n = 3 cluster appears to be a special case where charge localization on Py and hydroxide is nearly isoenergetic, and the nature of this species is explored with ab initio molecular dynamics calculations of the trajectories that start from metastable arrangements of the anion based on a diffuse, essentially dipole-bound electron. These calculations indicate that the reaction proceeds via a relatively slow rearrangement of the water network to create a favorable hydration configuration around the water molecule that eventually donates a proton to the Py nitrogen atom to yield the product hydroxide ion. In conclusion, the correlation between the degree of excess charge localization and the evolving shape of the water network revealed by this approach thus provides a microscopic picture of the “solvent coordinate” at the heart of a prototypical proton-coupled electron transfer reaction

Research Organization:
Yale Univ., New Haven, CT (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
FG02-06ER15800; FG02-00ER15066
OSTI ID:
1469362
Alternate ID(s):
OSTI ID: 1223330
Journal Information:
Journal of Chemical Physics, Vol. 143, Issue 14; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

References (61)

Infrared Characterization of the Icosahedral Shell Closing in Cl - ·H 2 O·Ar n (1 ≤ n ≤ 13) Clusters journal May 2002
Prying Apart a Water Molecule with Anionic H-Bonding:  A Comparative Spectroscopic Study of the X - ·H 2 O (X = OH, O, F, Cl, and Br) Binary Complexes in the 600−3800 cm -1 Region journal April 2006
Photoelectron spectroscopy of pyridine cluster anions, (Py)n−(n=4–13) journal September 1999
Correction to “Vibrational Autodetachment–Intramolecular Vibrational Relaxation Translated Into Electronic Motion” journal August 2011
Photoelectron spectroscopy of hydrated electron cluster anions, (H 2 O) n =2–69 journal March 1990
Angular Distribution of Photoelectrons journal January 1968
Density-functional exchange-energy approximation with correct asymptotic behavior journal September 1988
How the Shape of an H-Bonded Network Controls Proton-Coupled Water Activation in HONO Formation journal January 2010
Observation of Large Water-Cluster Anions with Surface-Bound Excess Electrons journal January 2005
Electron Attachment Energies of the DNA Bases journal July 1998
Dissociative electron attachment in chloroalkanes and the correlation with vertical attachment energies journal January 1998
The angular distribution of photoelectrons ejected from the hydrated electron cluster (H 2 O) 18 journal March 1990
Gaussian basis sets for use in correlated molecular calculations. I. The atoms boron through neon and hydrogen journal January 1989
Reconstruction of Abel-transformable images: The Gaussian basis-set expansion Abel transform method journal July 2002
Photochemistry of hydrated electron clusters (H 2 O) n (15≤ n ≤40) at 1064 nm: Size dependent competition between photofragmentation and photodetachment journal October 1988
Electron affinities of the first‐row atoms revisited. Systematic basis sets and wave functions journal May 1992
Spectroscopic Determination of the OH- Solvation Shell in the OH-middle dot(H2O)n Clusters journal January 2003
Negative ion formation, vibrational excitation, and transmission spectroscopy in hydrogen halides journal September 1975
The M06 suite of density functionals for main group thermochemistry, thermochemical kinetics, noncovalent interactions, excited states, and transition elements: two new functionals and systematic testing of four M06-class functionals and 12 other functionals journal July 2007
Electronic Relaxation Dynamics of Water Cluster Anions journal November 2005
Model Potential Approaches for Describing the Interaction of Excess Electrons with Water Clusters: Incorporation of Long-Range Correlation Effects journal November 2008
Tuning the intermolecular proton bond in the H5<mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mrow><mml:msubsup><mml:mrow><mml:mtext>O</mml:mtext></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msubsup></mml:mrow></mml:math> ‘Zundel ion’ scaffold journal June 2011
A reciprocal space based method for treating long range interactions in ab initio and force-field-based calculations in clusters journal February 1999
Survey of Ar-Tagged Predissociation and Vibrationally Mediated Photodetachment Spectroscopies of the Vinylidene Anion, C 2 H 2 journal January 2010
Microhydration of Contact Ion Pairs in M 2+ OH (H 2 O) n =1–5 (M = Mg, Ca) Clusters: Spectral Manifestations of a Mobile Proton Defect in the First Hydration Shell journal June 2014
Preparation and photoelectron spectrum of the ‘missing’ <mml:math altimg="si8.gif" display="inline" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mrow><mml:mo stretchy="false">(</mml:mo><mml:msub><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:msubsup><mml:mrow><mml:mo stretchy="false">)</mml:mo></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow><mml:mrow><mml:mo>-</mml:mo></mml:mrow></mml:msubsup></mml:mrow></mml:math> cluster journal December 2004
Spectroscopic Study of the Ion−Radical H-Bond in H 4 O 2 + journal April 2009
Photoelectron imaging of negative ions journal January 2008
Photoelectron spectra of hydrated electron clusters: Fitting line shapes and grouping isomers journal July 2006
Electron Binding Motifs of (H 2 O) n - Clusters journal May 2006
Photoelectron imaging study of vibrationally mediated electron autodetachment in the type I isomer of the water hexamer anion journal December 2008
Cluster size effects upon anion solvation of N-heterocyclic molecules and nucleic acid bases journal February 2000
The influence of polarization functions on molecular orbital hydrogenation energies journal January 1973
Development of the Colle-Salvetti correlation-energy formula into a functional of the electron density journal January 1988
Theoretical Study on the Excess Electron Binding Mechanism in the [CH 3 NO 2 ·(H 2 O) n ] ( n = 1−6) Anion Clusters journal September 2010
Temporary anion states of phosphabenzene, arsabenzene, and stibabenzene. Trends in the .pi. and .pi.* orbital energies journal January 1982
The onset of electron-induced proton-transfer in hydrated azabenzene cluster anions journal January 2016
MP2 energy evaluation by direct methods journal December 1988
Infrared Spectra of the 1-Pyridinium (C 5 H 5 NH + ) Cation and Pyridinyl (C 5 H 5 NH and 4-C 5 H 6 N) Radicals Isolated in Solid para- Hydrogen journal October 2013
Photoelectron spectroscopy of the `missing' hydrated electron clusters (H2O)−n, n=3, 5, 8 and 9: Isomers and continuity with the dominant clusters n=6, 7 and ⩾11 journal November 1998
Relativistic separable dual-space Gaussian pseudopotentials from H to Rn journal August 1998
Separable dual-space Gaussian pseudopotentials journal July 1996
Size-dependent collisional incorporation of D2O into (H2O)−n around n = 15: implications on the origin of magic numbers in the hydrated electron cluster distribution journal June 1991
Why does the IR spectrum of hydroxide stretching vibration weaken with increase in hydration? journal January 2014
Mechanism of Homogeneous Reduction of CO 2 by Pyridine: Proton Relay in Aqueous Solvent and Aromatic Stabilization journal December 2012
Velocity map imaging of ions and electrons using electrostatic lenses: Application in photoelectron and photofragment ion imaging of molecular oxygen journal September 1997
Semiempirical GGA-type density functional constructed with a long-range dispersion correction journal January 2006
How Do Small Water Clusters Bind an Excess Electron? journal October 2004
Temporary negative-ion states in pyridine and diazine molecules journal September 1976
Formation and photodestruction of dual dipole-bound anion (H2O)6{e−}CH3NO2 journal June 2009
Electrocatalytic Carbon Dioxide Activation: The Rate-Determining Step of Pyridinium-Catalyzed CO2 Reduction journal February 2011
Photoelectron spectroscopy of 1-nitropropane and 1-nitrobutane anions journal February 2012
Vibrational predissociation spectroscopy of the (H2O)6−⋅Arn, n⩾6, clusters journal January 1998
Note on an Approximation Treatment for Many-Electron Systems journal October 1934
Ground-State Dipole-Bound Anions journal May 1996
Efficient diffuse function-augmented basis sets for anion calculations. III. The 3-21+G basis set for first-row elements, Li-F journal October 1983
Bottom-Up View of Water Network-Mediated CO 2 Reduction Using Cryogenic Cluster Ion Spectroscopy and Direct Dynamics Simulations journal December 2011
The FT-IR spectra of pyridine and pyridine-d5 journal March 1984
Temporary anion states of polyatomic hydrocarbons journal June 1987
Infrared Spectrum and Structural Assignment of the Water Trimer Anion journal December 2005
Self—Consistent Molecular Orbital Methods. XII. Further Extensions of Gaussian—Type Basis Sets for Use in Molecular Orbital Studies of Organic Molecules journal March 1972