Publications

2000

The infrared predissociation spectra of Cl⁻·H₂O·Ar_n (n=1–5): experimental determination of the influence of Ar solvent atoms

J. A. Kelley, J. M. Weber, K. M. Lisle, W. H. Robertson, P. Ayotte, and M.A. Johnson

Chem. Phys. Lett., Vol. 327, (1-2), pp. 1-6

DOI Link: 10.1016/S0009-2614(00)00827-7

Double-contact ion-molecule binding: Infrared characterization of the ionic H bonds to formic acid in the I⁻⋅HCOOH complex

William H. Robertson, Jude A. Kelley, and Mark A. Johnson

J. Chem. Phys., Vol. 113, (18), pp. 7879

DOI Link: 10.1063/1.1315357

Spectroscopic observation of vibrational Feshbach resonances in near-threshold photoexcitation of X⁻·CH₃NO₂ (X⁻=I⁻ and Br⁻)

Caroline E. H. Dessent, Jun Kim and Mark A. Johnson

Faraday Discuss., Vol. 115, pp. 395-406

DOI Link: 10.1039/A909550K

Isolating the Spectroscopic Signature of a Hydration Shell With the Use of Clusters: Superoxide Tetrahydrate

J. Mathias Weber, Jude A. Kelley, Steen B. Nielsen, Patrick Ayotte, and Mark A. Johnson

Science, Vol. 287, (5462), pp. 2461-2463

DOI Link: 10.1126/science.287.5462.2461

Vibrational spectroscopy of the F⁻·H₂O complex via argon predissociation: photoinduced, intracluster proton transfer?

Patrick Ayotte, Jude A. Kelley, Steen B. Nielsen, and Mark A. Johnson

Chem. Phys. Lett., Vol. 316, (5-6), pp. 455-459

DOI Link: 10.1016/S0009-2614(99)01257-9

1999

Spectroscopic Observation of Ion-Induced Water Dimer Dissociation in the X^-·(H₂O)₂ (X = F, Cl, Br, I) Clusters

Patrick Ayotte, Steen B. Nielsen, Gary H. Weddle, Mark A. Johnson, and Sotiris S. Xantheas

J. Phys. Chem. A, Vol. 103, (50), pp. 10665-10669

DOI Link: 10.1021/jp991963r

Infrared spectra of hydrogen-bonded ion–radical complexes: I⁻⋅HCH₂ and Br⁻⋅HCHBr

Steen B. Nielsen, Patrick Ayotte, Jude A. Kelley, Gary H. Weddle, and Mark A. Johnson

J. Chem. Phys., Vol. 111, (23), pp. 10464

DOI Link: 10.1063/1.480392

Infrared spectroscopic observation of the argon isomer distribution in evaporative ensembles of I⁻⋅ROH⋅Ar_m (R=methyl, ethyl, isopropyl) clusters

Steen B. Nielsen, Patrick Ayotte, Jude A. Kelley, and Mark A. Johnson

J. Chem. Phys., Vol. 111, (21), pp. 9593

DOI Link: 10.1063/1.480292

Preparation and photoelectron spectrum of the CH₃I⁻ anion: Rare gas cluster mediated synthesis of an ion-radical complex

Jun Kim, Jude A. Kelley, Patrick Ayotte, Steen B. Nielsen, Gary H. Weddle and Mark A. Johnson

J. Am. Soc. Mass Spectrom., Vol. 10, (9), pp. 810-814

DOI Link: 10.1016/S1044-0305(99)00057-4

Photoactivation of the Cl^- + CH₃Br S_N2 Reaction via Rotationally Resolved C−H Stretch Excitation of the Cl^-·CH₃Br Entrance Channel Complex

Patrick Ayotte, Jun Kim, Jude A. Kelley, Steen B. Nielsen, and Mark A. Johnson

J. Am. Chem. Soc., Vol. 121, (29), pp. 6950-6951

DOI Link: 10.1021/ja990814j

An infrared study of the competition between hydrogen-bond networking and ionic solvation: Halide-dependent distortions of the water trimer in the X⁻⋅(H₂O)₃, (X=Cl, Br, I) systems

Patrick Ayotte, Gary H. Weddle, and Mark A. Johnson

J. Chem. Phys., Vol. 110, (15), pp. 7129

DOI Link: 10.1063/1.478616

Infrared spectroscopy of negatively charged water clusters: Evidence for a linear network

Patrick Ayotte, Gary H. Weddle, Christopher G. Bailey, Mark A. Johnson, Fernando Vila, and Kenneth D. Jordan

J. Chem. Phys., Vol. 110, (13), pp. 6268

DOI Link: 10.1063/1.478531

A Cluster Study of Anionic Hydration: Spectroscopic Characterization of the I^-·W_n, 1 ≤ n ≤ 3, Supramolecular Complexes at the Primary Steps of Solvation

Patrick Ayotte, Gary H. Weddle, Jun Kim, Jude Kelley, and Mark A. Johnson

J. Phys. Chem. A, Vol. 103, (4), pp. 443-447

DOI Link: 10.1021/jp9838341

Electron transfer and charge separation in clusters

Caroline E. H. Dessent, Mark A. Johnson, Israela Becker, and Ori Cheshnovsky

Advances in Chemical Physics, Vol. 106, pp. 265-302

DOI Link: 10.1002/9780470141656.ch6

1998

Mass-selected “matrix isolation” infrared spectroscopy of the I⁻·(H₂O)₂ complex: making and breaking the inter-water hydrogen-bond

Patrick Ayotte, Gary H. Weddle, Jun Kim, Mark A. Johnson

Chem. Phys., Vol. 239, (1-3), pp. 485-491

DOI Link: 10.1016/S0301-0104(98)00287-0

Vibrational Spectroscopy of the Ionic Hydrogen Bond: Fermi Resonances and Ion−Molecule Stretching Frequencies in the Binary X^-·H₂O (X = Cl, Br, I) Complexes via Argon Predissociation Spectroscopy

Patrick Ayotte, Gary H. Weddle, Jun Kim, and Mark A. Johnson

J. Am. Chem. Soc., Vol. 120, (47), pp. 12361-12362

DOI Link: 10.1021/ja981979f

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

Jun Kim, Israela Becker, Ori Cheshnovsky, and Mark A. Johnson

Chem. Phys. Lett., Vol. 297, (1-2), pp. 90-96

DOI Link: 10.1016/S0009-2614(98)01109-9

Photochemistry of Halide Ion−Molecule Clusters: Dipole-Bound Excited States and the Case for Asymmetric Solvation

Caroline E. H. Dessent, Jun Kim, and Mark A. Johnson

Acc. Chem. Res., Vol. 31, (9), pp. 527-534

DOI Link: 10.1021/ar950061f

Vibrational Spectroscopy of Small Br^-·(H₂O)_n and I^-·(H₂O)_n Clusters: Infrared Characterization of the Ionic Hydrogen Bond

Patrick Ayotte, Christopher G. Bailey, Gary H. Weddle, and Mark A. Johnson

J. Phys. Chem. A, Vol. 102, (18), pp. 3067-3071

DOI Link: 10.1021/jp9803900

Vibrational predissociation spectroscopy of the (H₂O)₆−⋅Ar_n n ≥ 6 clusters

Patrick Ayotte, Christopher G. Bailey, Jun Kim, and Mark A. Johnson

J. Chem. Phys., Vol. 108, (2), pp. 444

DOI Link: 10.1063/1.475406

Cover Articles

Hydrogen Tag Shifts as Vibrational Reporters for Positional Isomers of Formylphenides: Surprising Mobility of the Carbanion Center Upon Collisional Decarboxylation of the Parent Benzoates

DOI Link: https://doi.org/10.1021/acs.jpclett.3c03514

Effects of Microhydration on the Mechanisms of Hydrolysis and Cl^- Substitution in Reactions of N₂O₅ and Seawater

DOI Link: https://doi.org/10.1002/cphc.202200819

Water Network Shape-Dependence of Local Interactions with the Microhydrated –NO₂⁻ and –CO₂⁻ Anionic Head Groups by Cold Ion Vibrational Spectroscopy

DOI Link: 10.1021/acs.jpca.2c00721

Preparation and Characterization of the Halogen Bonding Motif in the Isolated Cl⁻∙IOH Complex with Cryogenic Ion Vibrational Spectroscopy

DOI Link: 10.1021/acs.jpclett.2c00218

Vibrational signatures of HNO₃ acidity when complexed with microhydrated alkali metal ions, M⁺∙(HNO₃)(H₂O)_n=5 (M=Li, K, Na, Rb, Cs), at 20 K

DOI Link: 10.1021/acs.jpca.1c10352

Size-Dependent Onset of Nitric Acid Dissociation in Cs⁺(HNO₃)(H₂O)_n=0-11 Clusters at 20 K

DOI Link: 10.1021/acs.jpclett.1c00235

Isolating the Contributions of Specific Network Sites to the Diffuse Vibrational Spectrum of Interfacial Water With Isotopomer-Selective Spectroscopy of Cold Clusters

DOI Link: 10.1021/acs.jpca.0c07795

Ionic Liquid Clusters Generated from Electrospray Thrusters: Cold Ion Spectroscopic Signatures of Size-Dependent Acid−Base Interactions

DOI Link: 10.1021/acs.jpca.0c07595

Vibrational Spectroscopy of the Cryogenically Cooled O- and N-Protomers of 4-Aminobenzoic Acid: Tag Effects, Isotopic Labels, and Identification of the E,Z Isomer of the O-Protomer

DOI Link: 10.1016/j.ijms.2020.116427

Spectroscopic Signatures of Mode-Dependent Tunnel Splitting in the Iodide-Water Binary Complex

DOI Link: 10.1021/acs.jpca.0c00853

Integration of High-Resolution Mass Spectrometry with Cryogenic Ion Vibrational Spectroscopy

DOI Link: 10.1007/s13361-019-02238-y

Tag-Free and Isotopomer-Selective Vibrational Spectroscopy of the Cryogenically Cooled H₉O₄⁺ Cation with Two-Color, IR-IR Double-Resonance: Isolating the Spectral Signature of a Single OH Group in the Hydronium Ion Core

DOI Link: 10.1021/acs.jpca.8b08507

Isolation of the site-specific anharmonicities of individual water molecules in the Iˉ∙(H₂O)₂ complex using tag‐free, isotopomer selective IR‐IR double resonance

DOI Link: 10.1016/j.cplett.2017.09.042

Spectroscopic characterization of a strongly interacting C₍₂₎H group on the EMIM⁺ cation in the (EMIM⁺)₂Xˉ, (X = BF₄, Cl, Br, and I) ternary building blocks of ionic liquids

DOI Link: 10.1063/1.5009009

Capture of CO₂ by a Cationic Ni^I Complex in the Gas Phase and Characterization of the Bound Activated CO₂ Molecule through Cryogenic Ion Vibrational Predissociation Spectroscopy

DOI Link: 10.1002/anie.201507965

Snapshots of Proton Accommodation at a Microscopic Water Surface: Understanding the Vibrational Spectral Signatures of the Charge Defect in Cryogenically Cooled H⁺(H₂O)_n=2-28 Clusters

DOI Link: 10.1021/acs.jpca.5b04355

Modes of Activation of Organometallic Iridium Complexes for Catalytic Water and C-H Oxidation

DOI Link: 10.1021/ic402390t

Vibrational manifestations of strong non-Condon effects in the H₃O⁺·X₃(X = Ar, N₂, CH4, H2O) complexes: A possible explanation for the intensity in the “association band” in the vibrational spectrum of water

DOI Link: 10.1039/C2CP24110B

Publications

2000

The infrared predissociation spectra of Cl−·H2O·Arn (n=1–5): experimental determination of the influence of Ar solvent atoms

Double-contact ion-molecule binding: Infrared characterization of the ionic H bonds to formic acid in the I−⋅HCOOH complex

Spectroscopic observation of vibrational Feshbach resonances in near-threshold photoexcitation of X−·CH3NO2 (X−=I− and Br−)

Isolating the Spectroscopic Signature of a Hydration Shell With the Use of Clusters: Superoxide Tetrahydrate

Vibrational spectroscopy of the F−·H2O complex via argon predissociation: photoinduced, intracluster proton transfer?

1999

Spectroscopic Observation of Ion-Induced Water Dimer Dissociation in the X-·(H2O)2 (X = F, Cl, Br, I) Clusters

Infrared spectra of hydrogen-bonded ion–radical complexes: I−⋅HCH2 and Br−⋅HCHBr

Infrared spectroscopic observation of the argon isomer distribution in evaporative ensembles of I−⋅ROH⋅Arm (R=methyl, ethyl, isopropyl) clusters

Preparation and photoelectron spectrum of the CH3I− anion: Rare gas cluster mediated synthesis of an ion-radical complex

Photoactivation of the Cl- + CH3Br SN2 Reaction via Rotationally Resolved C−H Stretch Excitation of the Cl-·CH3Br Entrance Channel Complex

An infrared study of the competition between hydrogen-bond networking and ionic solvation: Halide-dependent distortions of the water trimer in the X−⋅(H2O)3, (X=Cl, Br, I) systems