1
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Tachikawa H. Mechanism of ionic dissociation of HCl in the smallest water clusters. Phys Chem Chem Phys 2024; 26:3623-3631. [PMID: 38224187 DOI: 10.1039/d3cp05715a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
The dissociation of strong acids into water is a fundamental process in chemistry and biology. Determining the minimum number of water molecules that can result in an ionic dissociation of hydrochloric acid (HCl → H+ + Cl-) remains a challenging subject. In this study, the reactions of H2O with HCl(H2O)n-1 (HCl-H2O cluster), i.e., HCl(H2O)n-1 + H2O (n = 3-7), were investigated by using the direct ab initio molecular dynamics (AIMD) method. Direct AIMD calculations were performed to set the collision energy of H2O to zero for all trajectories. For n = 3, no reaction occurred. In contrast, HCl dissociated to H+ + Cl- at n = 4, forming a contact ion pair (cIP) and solvent-separated ion pair (ssIP) as products. The reactions were expressed as HCl(H2O)3 + H2O → H3O+(H2O)2Cl- (ssIP), and HCl(H2O)3 + H2O → H3O+(Cl-)(H2O)2 (cIP). The ion pair (IP) products were dependent on the collision site of H2O relative to HCl(H2O)3. For n = 5-7, both IPs were formed through the reaction between H2O and HCl(H2O)n-1 (n = 5-7). The reaction between HCl and (H2O)4 (HCl + (H2O)4 → HCl(H2O)4) was non-reactive in IP formation. The reaction mechanism was discussed based on the theoretical results.
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Affiliation(s)
- Hiroto Tachikawa
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan.
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2
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Felker PM, Bačić Z. Noncovalently bound molecular complexes beyond diatom–diatom systems: full-dimensional, fully coupled quantum calculations of rovibrational states. Phys Chem Chem Phys 2022; 24:24655-24676. [DOI: 10.1039/d2cp04005k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The methodological advances made in recent years have significantly extended the range and dimensionality of noncovalently bound molecular complexes for which full-dimensional quantum calculations of their rovibrational states are feasible.
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Affiliation(s)
- Peter M. Felker
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569, USA
| | - Zlatko Bačić
- Department of Chemistry, New York University, New York, NY, 10003, USA
- Simons Center for Computational Physical Chemistry at New York University, USA
- NYU-ECNU Center for Computational Chemistry at NYU Shanghai, 3663 Zhongshan Road North, Shanghai, 200062, China
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3
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Voute A, Gatti F, Møller KB, Henriksen NE. Femtochemistry of bimolecular reactions from weakly bound complexes: computational study of the H + H'OD → H'OH + D or HOD + H' exchange reactions. Phys Chem Chem Phys 2021; 23:27207-27226. [PMID: 34850799 DOI: 10.1039/d1cp04391a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A full-dimensional wavepacket propagation describing the bimolecular exchange reactions H + H'OD → H'OH + D or HOD + H' initiated by photolysis of HCl in the hydrogen-bound complex (HCl)⋯(HOD) is reported. The dynamics of this reaction is carried out with the MCTDH method on an ab initio potential energy surface (PES) of H3O and the initial state is derived from the ground state wavefunction of the complex obtained by relaxation on its own electronic ground state ab initio PES. The description of the system makes use of polyspherical coordinates parametrizing a set of Radau and Jacobi vectors. The calculated energy- and time-resolved reaction probabilities show, owing to the large collision energies at play stemming from the (almost full) photolysis of HCl, that the repulsion between oxygen in the H'OD molecule and the incoming hydrogen atom is the main feature of the collision and leads to non-reactive scattering. No abstraction reaction products are observed. However, both exchange processes are still observable, with a preference in O-H' bond dissociation over that of O-D. The selectivity is reversed upon vibrational pre-excitation of the O-D stretching mode in the H'OD molecule. It is shown that, after the collision, the hydrogen atom of HCl does most likely not encounter the almost stationary chlorine atom again but we also consider the limit case where the H atom is forced to collide multiple times against H'OD as a result of being pushed back by the Cl atom.
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Affiliation(s)
- Alexandre Voute
- Department of Chemistry, Technical University of Denmark, Kemitorvet 206, 2800 Kongens Lyngby, Denmark.
| | - Fabien Gatti
- ISMO, Institut des Sciences Moléculaires d'Orsay - UMR 8214 CNRS/Université Paris-Saclay, F-91405 Orsay, France
| | - Klaus B Møller
- Department of Chemistry, Technical University of Denmark, Kemitorvet 206, 2800 Kongens Lyngby, Denmark.
| | - Niels E Henriksen
- Department of Chemistry, Technical University of Denmark, Kemitorvet 206, 2800 Kongens Lyngby, Denmark.
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4
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Felker PM, Bačić Z. Intra- and intermolecular rovibrational states of HCl-H2O and DCl-H2O dimers from full-dimensional and fully coupled quantum calculations. CHINESE J CHEM PHYS 2021. [DOI: 10.1063/1674-0068/cjcp2110189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Peter M. Felker
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569, USA
| | - Zlatko Bačić
- Department of Chemistry, New York University, New York 10003, USA
- NYU-ECNU Center for Computational Chemistry at NYU Shanghai, Shanghai 200062, China
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5
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Felker PM, Liu Y, Li J, Bačić Z. DCl-H 2O, HCl-D 2O, and DCl-D 2O Dimers: Inter- and Intramolecular Vibrational States and Frequency Shifts from Fully Coupled Quantum Calculations on a Full-Dimensional Neural Network Potential Energy Surface. J Phys Chem A 2021; 125:6437-6449. [PMID: 34261318 DOI: 10.1021/acs.jpca.1c04662] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report full-dimensional and fully coupled quantum calculations of the inter- and intramolecular vibrational states of three isotopologues of the hydrogen chloride-water dimer: DCl-H2O (DH), HCl-D2O (HD), and DCl-D2O (DD). The present study extends our recent theoretical investigation of the nine-dimensional (9D) vibrational level structure of the HCl-H2O (HH) dimer [Liu, Y.; Li, J.; Felker, P. M.; Bačić, Z. Phys. Chem. Chem. Phys. 2021, 23, 7101-7114]. It employs the same accurate 9D permutation invariant polynomial-neural network potential energy surface and the highly efficient bound-state methodology. The objective of this work is to elucidate the isotopologue variations of a range of bound-state properties of the hydrogen chloride-water dimer and compare them to those of the HH dimer. In order to achieve this, for the isotopologues considered, the rigorous 9D quantum calculations performed encompass all intramolecular vibrational fundamentals, and their frequency shifts relative to the isolated monomer values, together with the low-lying intermolecular vibrational states in each of the intramolecular vibrational manifolds of interest. Moreover, for the ground state of each isotopologue, several informative vibrationally averaged intermolecular geometric properties of the dimer are computed, as well as the three rotational constants. The energies of the intermolecular inversion and rock modes, which mainly involve the motions of the water moiety, differ greatly for H2O and D2O, but are much less sensitive to whether the hydrogen chloride isotopologue is HCl or DCl. On the other hand, the excitation of the HCl/DCl stretch changes significantly the energies of the water inversion and rock modes. The DCl stretch frequency shift computed in 9D for the DD dimer, -114.91 cm-1, agrees extremely well with the corresponding experimental value of -115.20 cm-1 measured by Saykally and co-workers.
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Affiliation(s)
- Peter M Felker
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1569, United States
| | - Yang Liu
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| | - Jun Li
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| | - Zlatko Bačić
- Department of Chemistry, New York University, New York, New York 10003, United States.,NYU-ECNU Center for Computational Chemistry at NYU Shanghai, 3663 Zhongshan Road North, Shanghai 200062, China
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6
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Liu Y, Li J, Felker PM, Bačić Z. HCl–H2O dimer: an accurate full-dimensional potential energy surface and fully coupled quantum calculations of intra- and intermolecular vibrational states and frequency shifts. Phys Chem Chem Phys 2021; 23:7101-7114. [DOI: 10.1039/d1cp00865j] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The present work reports a new full-dimensional potential energy surface (PES) of the HCl–H2O dimer, and the first fully coupled 9D quantum calculations of the intra- and intermolecular vibrational states of the complex, utilizing this PES.
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Affiliation(s)
- Yang Liu
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 401331
- China
| | - Jun Li
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 401331
- China
| | - Peter M. Felker
- Department of Chemistry and Biochemistry
- University of California
- Los Angeles
- USA
| | - Zlatko Bačić
- Department of Chemistry
- New York University
- New York
- USA
- NYU-ECNU Center for Computational Chemistry at NYU Shanghai
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7
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MAITHANI SANCHI, PRADHAN MANIK. Cavity ring-down spectroscopy and its applications to environmental, chemical and biomedical systems. J CHEM SCI 2020. [DOI: 10.1007/s12039-020-01817-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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8
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Cao Z, Li Z, Xu F, Wu Y, Zhou Z, Tong Z, Ma W, Zhu W. Influence of Spatial Inhomogeneity of Detector Temporal Responses on the Spectral Fidelity in Continuous Wave Cavity Ringdown Spectroscopy. SENSORS (BASEL, SWITZERLAND) 2019; 19:E5232. [PMID: 31795193 PMCID: PMC6928631 DOI: 10.3390/s19235232] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 11/25/2019] [Accepted: 11/25/2019] [Indexed: 11/16/2022]
Abstract
Due to their advantages of having a wide bandwidth, low cost, and being easy to obtain, traditional photodetectors (PDs) are being widely applied in measurements of transient signals. The spatial inhomogeneity of such PD temporal responses was measured directly to account for the PD spatial effect of decay rate due to poor alignment in continuous wave cavity ringdown spectroscopy (CW-CRDS) experiments. Based on the measurements of three PDs (i.e., model 1611 (Newport), model 1811 (Newport), and model PDA10CF-EC (Thorlabs)), all the temporal responses followed a tendency of declining first and then rising, and steady platforms existed for the last two PDs. Moreover, as we expected, the closer the PD center was, the faster the response. On the other hand, the initial shut-off amplitude generally reached a larger value for a faster temporal response. As a result, the spatial effect can strongly influence the spectral line shape and value, which will introduce more errors into the precise measurements of spectral parameters using the CRDS technique if this effect is not considered. The defined effective detection area (EDA) of the PDs, which was close to the active area given by manufacturers, was the key parameter that should be paid more attention by researchers. Therefore, the PD should be aligned perfectly to make sure that the EDA covers the laser spot completely.
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Affiliation(s)
- Zhensong Cao
- Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; (Z.C.); (W.Z.)
| | - Zhixin Li
- School of Software, Shanxi University, Taiyuan 030006, China
| | - Fei Xu
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Yongqian Wu
- Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China;
| | - Zixin Zhou
- Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; (Z.C.); (W.Z.)
| | - Zhaomin Tong
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Weiguang Ma
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
| | - Wenyue Zhu
- Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; (Z.C.); (W.Z.)
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9
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Christensen EG, Steele RP. Probing the Partial Activation of Water by Open-Shell Interactions, Cl(H 2O) 1-4. J Phys Chem A 2019; 123:8657-8673. [PMID: 31513400 DOI: 10.1021/acs.jpca.9b07235] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The partial chemical activation of water by reactive radicals was examined computationally for small clusters of chlorine and water, Cl•(H2O)n=1-4. Using an automated isomer-search procedure, dozens of unique, stable structures were computed. Among the resulting structural classes were intact, hydrated-chlorine isomers, as well as hydrogen-abstracted (HCl)(OH)(H2O)n-1 configurations. The latter showed increased stability as the degree of hydration increased, until n = 4, where a new class of structures was discovered with a chloride ion bound to an oxidized water network. The electronic structure of these three structural classes was investigated, and spectral signatures of this hydration-based evolution were connected to these electronic properties. An ancillary outcome of this detailed computational analysis, including coupled-cluster benchmarks, was the calibration of cost-effective quantum chemistry methods for future studies of these radical-water complexes.
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Affiliation(s)
- Elizabeth G Christensen
- Department of Chemistry and Henry Eyring Center for Theoretical Chemistry , University of Utah , 315 South 1400 East , Salt Lake City , Utah 84112 , United States
| | - Ryan P Steele
- Department of Chemistry and Henry Eyring Center for Theoretical Chemistry , University of Utah , 315 South 1400 East , Salt Lake City , Utah 84112 , United States
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10
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Lam KT, Wilhelmsen CJ, Dibble TS. BrHgO• + C2H4 and BrHgO• + HCHO in Atmospheric Oxidation of Mercury: Determining Rate Constants of Reactions with Prereactive Complexes and Bifurcation. J Phys Chem A 2019; 123:6045-6055. [DOI: 10.1021/acs.jpca.9b05120] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Khoa T. Lam
- Department of Chemistry, State University of New York-College of Environmental Science and Forestry, 1 Forestry Dr., Syracuse, New York 13210, United States
| | - Curtis J. Wilhelmsen
- Department of Chemistry, State University of New York-College of Environmental Science and Forestry, 1 Forestry Dr., Syracuse, New York 13210, United States
| | - Theodore S. Dibble
- Department of Chemistry, State University of New York-College of Environmental Science and Forestry, 1 Forestry Dr., Syracuse, New York 13210, United States
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11
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Li H, Kong X, Jiang L, Liu ZF. Size-Dependent Formation of an Ion Pair in HSO 4-(H 2O) n: A Molecular Model for Probing the Microsolvation of Acid Dissociation. J Phys Chem Lett 2019; 10:2162-2169. [PMID: 30995405 DOI: 10.1021/acs.jpclett.9b00699] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
With a p Ka of 2.0, HSO4- is not a strong acid as its dissociation percentage is only ∼10% in a solution of 1 M. However, our ab initio molecular dynamics and density functional theory calculations show that acid dissociation in the hydrate clusters, HSO4-(H2O) n, is quite facile at moderate sizes. It starts at around n = 12 and is completed by n = 16 when the energetics becomes very favorable. The dissociation explains the significant broadening at n = 16 in the S═O stretching region of the previously reported infrared photodissociation spectra for HSO4-(H2O) n as the solvation shell is tightened around the sulfate dianion and the proton. More importantly, HSO4-(H2O) n should provide an ideal model to probe the molecular details involved in an acid dissociation process.
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Affiliation(s)
- Huiyan Li
- Department of Chemistry and Centre for Scientific Modeling and Computation , Chinese University of Hong Kong , Shatin , Hong Kong , China
| | - Xiangtao Kong
- State Key Laboratory of Molecular Reaction Dynamics, Collaborative Innovation Center of Chemistry for Energy and Materials (iChEM) , Dalian Institute of Chemical Physics, Chinese Academy of Sciences , 457 Zhongshan Road , Dalian 116023 , China
| | - Ling Jiang
- State Key Laboratory of Molecular Reaction Dynamics, Collaborative Innovation Center of Chemistry for Energy and Materials (iChEM) , Dalian Institute of Chemical Physics, Chinese Academy of Sciences , 457 Zhongshan Road , Dalian 116023 , China
| | - Zhi-Feng Liu
- Department of Chemistry and Centre for Scientific Modeling and Computation , Chinese University of Hong Kong , Shatin , Hong Kong , China
- CUHK Shenzhen Research Institute , No. 10, Second Yuexing Road , Nanshan District, Shenzhen , China
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12
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Perlt E, Berger SA, Kelterer AM, Kirchner B. Anharmonicity of Vibrational Modes in Hydrogen Chloride-Water Mixtures. J Chem Theory Comput 2019; 15:2535-2547. [PMID: 30811198 DOI: 10.1021/acs.jctc.8b01070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A thorough analysis of molecular vibrations in the binary system hydrogen chloride/water is presented considering a set of small mixed and pure clusters. In addition to the conventional normal-mode analysis based on the diagonalization of the Hessian, anharmonic frequencies were obtained from the perturbative VPT2 and PT2-VSCF method using hybrid density functional theory. For all normal modes, potential energy curves were modeled by displacing the atoms from the minimum geometry along the normal mode vectors. Three model potentials, a harmonic potential, a Morse potential, and a fourth order polynomial, were applied to fit these curves. From these data, it was possible not only to characterize distinct vibrations as mainly harmonic, anharmonic, or involving higher order terms but also to extract force constants, k, and anharmonicity constants, xe. By investigating all different types of intramolecular vibrations including covalent stretching or bending vibrations and intermolecular vibrations such as librations, we could demonstrate that while vibrational frequencies can be obtained applying scaling factors to harmonic results, useful anharmonicity constants cannot be predicted in such a way and the usage of more elaborate vibrational methods is necessary. For each particular type of molecular vibration, we could however determine a relationship between the wavenumber or wavenumber shift and the anharmonicity constant, which allows us to estimate mode dependent anharmonicity constants for larger clusters in the future.
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Affiliation(s)
- Eva Perlt
- Department of Chemistry , University of California, Irvine , 1102 Natural Sciences II , Irvine , California 92697-2025 , United States
| | - Sarah A Berger
- Institute of Physical and Theoretical Chemistry, NAWI Graz , Graz University of Technology , Stremayrgasse 9 , 8010 Graz , Austria
| | - Anne-Marie Kelterer
- Institute of Physical and Theoretical Chemistry, NAWI Graz , Graz University of Technology , Stremayrgasse 9 , 8010 Graz , Austria
| | - Barbara Kirchner
- Mulliken Center for Theoretical Chemistry , University of Bonn , Beringstrasse 4 , D-53115 Bonn , Germany
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13
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Tachikawa H. Proton Transfer Rates in Ionized Hydrogen Chloride–Water Clusters: A Direct Ab Initio Molecular Dynamics Study. J Phys Chem A 2017; 121:5237-5244. [DOI: 10.1021/acs.jpca.7b05112] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiroto Tachikawa
- Division of Applied Chemistry, Graduate
School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
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14
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Xue RJ, Grofe A, Yin H, Qu Z, Gao J, Li H. Perturbation Approach for Computing Infrared Spectra of the Local Mode of Probe Molecules. J Chem Theory Comput 2017; 13:191-201. [PMID: 28068771 DOI: 10.1021/acs.jctc.6b00733] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Linear and two-dimensional infrared (IR) spectroscopy of site-specific probe molecules provides an opportunity to gain a molecular-level understanding of the local hydrogen-bonding network, conformational dynamics, and long-range electrostatic interactions in condensed-phase and biological systems. A challenge in computation is to determine the time-dependent vibrational frequencies that incorporate explicitly both nuclear quantum effects of vibrational motions and an electronic structural representation of the potential energy surface. In this paper, a nuclear quantum vibrational perturbation (QVP) method is described for efficiently determining the instantaneous vibrational frequency of a chromophore in molecular dynamics simulations. Computational efficiency is achieved through the use of (a) discrete variable representation of the vibrational wave functions, (b) a perturbation theory to evaluate the vibrational energy shifts due to solvent dynamic fluctuations, and (c) a combined QM/MM potential for the systems. It was found that first-order perturbation is sufficiently accurate, enabling time-dependent vibrational frequencies to be obtained on the fly in molecular dynamics. The QVP method is illustrated in the mode-specific linear and 2D-IR spectra of the H-Cl stretching frequency in the HCl-water clusters and the carbonyl stretching vibration of acetone in aqueous solution. To further reduce computational cost, a hybrid strategy was proposed, and it was found that the computed vibrational spectral peak position and line shape are in agreement with experimental results. In addition, it was found that anharmonicity is significant in the H-Cl stretching mode, and hydrogen-bonding interactions further enhance anharmonic effects. The present QVP method complements other computational approaches, including path integral-based molecular dynamics, and represents a major improvement over the electrostatics-based spectroscopic mapping procedures.
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Affiliation(s)
- Rui-Jie Xue
- Institute of Theoretical Chemistry, Jilin University , 2519 Jiefang Road, Changchun 130023, People's Republic of China
| | - Adam Grofe
- Department of Chemistry and Supercomputing Institute, University of Minnesota , 207 Pleasant Street, SE, Minneapolis, Minnesota 55455, United States
| | - He Yin
- Institute of Theoretical Chemistry, Jilin University , 2519 Jiefang Road, Changchun 130023, People's Republic of China
| | - Zexing Qu
- Institute of Theoretical Chemistry, Jilin University , 2519 Jiefang Road, Changchun 130023, People's Republic of China
| | - Jiali Gao
- Institute of Theoretical Chemistry, Jilin University , 2519 Jiefang Road, Changchun 130023, People's Republic of China.,Department of Chemistry and Supercomputing Institute, University of Minnesota , 207 Pleasant Street, SE, Minneapolis, Minnesota 55455, United States
| | - Hui Li
- Institute of Theoretical Chemistry, Jilin University , 2519 Jiefang Road, Changchun 130023, People's Republic of China
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15
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Litman YE, Videla PE, Rodriguez J, Laria D. Positional Isotope Exchange in HX·(H2O)n (X = F, I) Clusters at Low Temperatures. J Phys Chem A 2016; 120:7213-24. [DOI: 10.1021/acs.jpca.6b06681] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yair E. Litman
- Departamento
de Química Inorgánica, Analítica y Química-Física
and INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires Ciudad Universitaria, Pabellón II, 1428 Buenos Aires, Argentina
| | - Pablo E. Videla
- Departamento
de Química Inorgánica, Analítica y Química-Física
and INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires Ciudad Universitaria, Pabellón II, 1428 Buenos Aires, Argentina
| | - Javier Rodriguez
- Departamento
de Física de la Materia Condensada, Comisión Nacional de Energía Atómica, Avenida Libertador 8250, 1429 Buenos Aires, Argentina
- ECyT, UNSAM, Martín
de Irigoyen 3100, 1650 San Martín, Pcia. de Buenos Aires, Argentina
| | - Daniel Laria
- Departamento
de Química Inorgánica, Analítica y Química-Física
and INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires Ciudad Universitaria, Pabellón II, 1428 Buenos Aires, Argentina
- Departamento
de Física de la Materia Condensada, Comisión Nacional de Energía Atómica, Avenida Libertador 8250, 1429 Buenos Aires, Argentina
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16
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Samanta AK, Wang Y, Mancini JS, Bowman JM, Reisler H. Energetics and Predissociation Dynamics of Small Water, HCl, and Mixed HCl–Water Clusters. Chem Rev 2016; 116:4913-36. [DOI: 10.1021/acs.chemrev.5b00506] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Amit K. Samanta
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089-0482, United States
| | - Yimin Wang
- Department
of Chemistry and Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, United States
| | - John S. Mancini
- Department
of Chemistry and Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, United States
| | - Joel M. Bowman
- Department
of Chemistry and Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, United States
| | - Hanna Reisler
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089-0482, United States
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17
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Tabor DP, Kusaka R, Walsh PS, Zwier TS, Sibert EL. Local Mode Approach to OH Stretch Spectra of Benzene–(H2O)n Clusters, n = 2–7. J Phys Chem A 2015; 119:9917-30. [PMID: 26340135 DOI: 10.1021/acs.jpca.5b06954] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel P. Tabor
- Department
of Chemistry and Theoretical Chemistry Institute, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Ryoji Kusaka
- Department
of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Patrick S. Walsh
- Department
of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Timothy S. Zwier
- Department
of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Edwin L. Sibert
- Department
of Chemistry and Theoretical Chemistry Institute, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
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18
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Kobzev GI, Zaika YV. Peculiarities of formation of hydroxonium ion and its small clusters. RUSS J GEN CHEM+ 2015. [DOI: 10.1134/s1070363215050011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Lin W, Paesani F. Infrared Spectra of HCl(H2O)n Clusters from Semiempirical Born–Oppenheimer Molecular Dynamics Simulations. J Phys Chem A 2014; 119:4450-6. [DOI: 10.1021/jp509791n] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Wei Lin
- Department of Chemistry and Biochemistry, University of California San Diego 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Francesco Paesani
- Department of Chemistry and Biochemistry, University of California San Diego 9500 Gilman Drive, La Jolla, California 92093, United States
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20
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Mancini JS, Bowman JM. Effects of Zero-Point Delocalization on the Vibrational Frequencies of Mixed HCl and Water Clusters. J Phys Chem Lett 2014; 5:2247-2253. [PMID: 26279542 DOI: 10.1021/jz500970h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We demonstrate the significant effect that large-amplitude zero-point vibrational motion can have on the high-frequency fundamental vibrations of molecular clusters, specifically small (HCl)n-(H2O)m clusters. Calculations were conducted on a many-body potential, constructed from a mix of new and previously reported semiempirical and high-level ab initio potentials. Diffusion Monte Carlo simulations were performed to determine ground-state wave functions. Visualization of these wave functions indicates that the clusters exhibit delocalized ground states spanning multiple stationary point geometries. The ground states are best characterized by planar ring configurations, despite the clusters taking nonplanar configurations at their global minima. Vibrational calculations were performed at the global minima and the Diffusion Monte Carlo predicted configurations and also using an approach that spans multiple stationary points along a rectilinear normal-mode reaction path. Significantly better agreement was observed between the calculated vibrational frequencies and experimental peak positions when the delocalized ground state was accounted for.
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Affiliation(s)
- John S Mancini
- Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Joel M Bowman
- Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
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21
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Vaida V, Donaldson DJ. Red-light initiated atmospheric reactions of vibrationally excited molecules. Phys Chem Chem Phys 2014; 16:827-36. [DOI: 10.1039/c3cp53543f] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Samanta AK, Ch’ng LC, Reisler H. Imaging bond breaking and vibrational energy transfer in small water containing clusters. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.05.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Mancini JS, Bowman JM. Communication: A new ab initio potential energy surface for HCl–H2O, diffusion Monte Carlo calculations of D0 and a delocalized zero-point wavefunction. J Chem Phys 2013; 138:121102. [DOI: 10.1063/1.4799231] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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24
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Babu NJ, Sanphui P, Nath NK, Khandavilli UBR, Nangia A. Temozolomide hydrochloride dihydrate. CrystEngComm 2013. [DOI: 10.1039/c2ce26528a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Suhm MA, Kollipost F. Femtisecond single-mole infrared spectroscopy of molecular clusters. Phys Chem Chem Phys 2013; 15:10702-21. [DOI: 10.1039/c3cp51515j] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Affiliation(s)
- Veronica Vaida
- Department of Chemistry and Biochemistry, CIRES, University of Colorado, Boulder, Colorado 80309-0215, USA
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27
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Affiliation(s)
- Kenneth R. Leopold
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455;
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28
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Rocher-Casterline BE, Mollner AK, Ch’ng LC, Reisler H. Imaging H2O Photofragments in the Predissociation of the HCl−H2O Hydrogen-Bonded Dimer. J Phys Chem A 2011; 115:6903-9. [DOI: 10.1021/jp112024s] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Blithe E. Rocher-Casterline
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482, United States
| | - Andrew K. Mollner
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482, United States
| | - Lee C. Ch’ng
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482, United States
| | - Hanna Reisler
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482, United States
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29
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Forbert H, Masia M, Kaczmarek-Kedziera A, Nair NN, Marx D. Aggregation-induced chemical reactions: acid dissociation in growing water clusters. J Am Chem Soc 2011; 133:4062-72. [PMID: 21351796 DOI: 10.1021/ja1099209] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Understanding chemical reactivity at ultracold conditions, thus enabling molecular syntheses via interstellar and atmospheric processes, is a key issue in cryochemistry. In particular, acid dissociation and proton transfer reactions are ubiquitous in aqueous microsolvation environments. Here, the full dissociation of a HCl molecule upon stepwise solvation by a small number of water molecules at low temperatures, as relevant to helium nanodroplet isolation (HENDI) spectroscopy, is analyzed in mechanistic detail. It is found that upon successive aggregation of HCl with H(2)O molecules, a series of cyclic heteromolecular structures, up to and including HCl(H(2)O)(3), are initially obtained before a precursor state for dissociation, HCl(H(2)O)(3)···H(2)O, is observed upon addition of a fourth water molecule. The latter partially aggregated structure can be viewed as an "activated species", which readily leads to dissociation of HCl and to the formation of a solvent-shared ion pair, H(3)O(+)(H(2)O)(3)Cl(-). Overall, the process is mostly downhill in potential energy, and, in addition, small remaining barriers are overcome by using kinetic energy released as a result of forming hydrogen bonds due to aggregation. The associated barrier is not ruled by thermal equilibrium but is generated by athermal non-equilibrium dynamics. These "aggregation-induced chemical reactions" are expected to be of broad relevance to chemistry at ultralow temperature much beyond HENDI spectroscopy.
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Affiliation(s)
- Harald Forbert
- Lehrstuhl für Theoretische Chemie, Ruhr-Universität Bochum, 44780 Bochum, Germany.
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30
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Sedo G, Leopold KR. Partial Proton Transfer in a Molecular Complex: Assessments From Both the Donor and Acceptor Points of View. J Phys Chem A 2011; 115:1787-94. [DOI: 10.1021/jp108851t] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Galen Sedo
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Kenneth R. Leopold
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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31
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Morrison AM, Flynn SD, Liang T, Douberly GE. Infrared Spectroscopy of (HCl)m(H2O)n Clusters in Helium Nanodroplets: Definitive Assignments in the HCl Stretch Region. J Phys Chem A 2010; 114:8090-8. [DOI: 10.1021/jp104545j] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
| | - Steven D. Flynn
- Department of Chemistry, University of Georgia, Athens, Georgia 30602-2556
| | - Tao Liang
- Department of Chemistry, University of Georgia, Athens, Georgia 30602-2556
| | - Gary E. Douberly
- Department of Chemistry, University of Georgia, Athens, Georgia 30602-2556
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32
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Casterline BE, Mollner AK, Ch’ng LC, Reisler H. Imaging the State-Specific Vibrational Predissociation of the Hydrogen Chloride−Water Hydrogen-Bonded Dimer. J Phys Chem A 2010; 114:9774-81. [DOI: 10.1021/jp102532m] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Blithe E. Casterline
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482
| | - Andrew K. Mollner
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482
| | - Lee C. Ch’ng
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482
| | - Hanna Reisler
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482
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33
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Soloveichik P, O’Donnell BA, Lester MI, Francisco JS, McCoy AB. Infrared Spectrum and Stability of the H2O−HO Complex: Experiment and Theory. J Phys Chem A 2009; 114:1529-38. [DOI: 10.1021/jp907885d] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pesia Soloveichik
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
| | - Bridget A. O’Donnell
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
| | - Marsha I. Lester
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
| | - Joseph S. Francisco
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907-2084
| | - Anne B. McCoy
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
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34
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Sedo G, Doran JL, Leopold KR. Partial Proton Transfer in the Nitric Acid Trihydrate Complex. J Phys Chem A 2009; 113:11301-10. [DOI: 10.1021/jp9063033] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Galen Sedo
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455
| | - Jamie L. Doran
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455
| | - Kenneth R. Leopold
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455
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35
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Path-integral molecular dynamics simulations of hydrated hydrogen chloride cluster HCl(H2O)4 on a semiempirical potential energy surface. Chem Phys 2009. [DOI: 10.1016/j.chemphys.2009.01.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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36
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Skvortsov D, Lee SJ, Choi MY, Vilesov AF. Hydrated HCl Clusters, HCl(H2O)1−3, in Helium Nanodroplets: Studies of Free OH Vibrational Stretching Modes. J Phys Chem A 2009; 113:7360-5. [DOI: 10.1021/jp811497c] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dmitry Skvortsov
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, and Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 660-701, South Korea
| | - Seung Jun Lee
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, and Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 660-701, South Korea
| | - Myong Yong Choi
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, and Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 660-701, South Korea
| | - Andrey F. Vilesov
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, and Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 660-701, South Korea
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37
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Ortlieb M, Birer Ö, Letzner M, Schwaab GW, Havenith M. Observation of Rovibrational Transitions of HCl, (HCl)2, and H2O−HCl in Liquid Helium Nanodroplets. J Phys Chem A 2007; 111:12192-9. [DOI: 10.1021/jp0759980] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. Ortlieb
- Department of Physical Chemistry II, Ruhr-University Bochum, Universitätsstrasse 150, D-44780 Bochum, Germany
| | - Ö. Birer
- Department of Physical Chemistry II, Ruhr-University Bochum, Universitätsstrasse 150, D-44780 Bochum, Germany
| | - M. Letzner
- Department of Physical Chemistry II, Ruhr-University Bochum, Universitätsstrasse 150, D-44780 Bochum, Germany
| | - G. W. Schwaab
- Department of Physical Chemistry II, Ruhr-University Bochum, Universitätsstrasse 150, D-44780 Bochum, Germany
| | - M. Havenith
- Department of Physical Chemistry II, Ruhr-University Bochum, Universitätsstrasse 150, D-44780 Bochum, Germany
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38
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Masia M, Forbert H, Marx D. Connecting Structure to Infrared Spectra of Molecular and Autodissociated HCl−Water Aggregates. J Phys Chem A 2007; 111:12181-91. [DOI: 10.1021/jp0740494] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marco Masia
- Lehrstuhl für Theoretische Chemie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - Harald Forbert
- Lehrstuhl für Theoretische Chemie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - Dominik Marx
- Lehrstuhl für Theoretische Chemie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
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39
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Wong DM, Dagdigian PJ. Comparison of IR and UV cavity ring-down spectroscopy detection of transient intermediates: pyrolysis of methyl azide to form methyleneimine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2007; 67:1019-24. [PMID: 17088097 DOI: 10.1016/j.saa.2006.09.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2006] [Revised: 09/15/2006] [Accepted: 09/18/2006] [Indexed: 05/12/2023]
Abstract
Mid-infrared cavity ring-down spectroscopy (CRDS) has been employed in this study to examine the hydride stretching region of methyl azide and its pyrolysis product methyleneimine. The absorption spectrum of methyl azide over 2835-3085 cm(-1) was recorded, and the integrated absorption cross section was determined. The pyrolysis of methyl azide and subsequent production of methyleneimine was observed at various wavenumbers. Using IR CRDS, we were able to observe vibrational transitions of methyleneimine without interference from the methyl azide precursor. Our previous UV CRDS study showed that electronic transitions of methyleneimine overlapped with those of methyl azide. IR CRDS should thus be useful for the detection of polyatomic transient intermediates without interference from precursors.
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Affiliation(s)
- Diane M Wong
- Department of Chemistry, The Johns Hopkins University, Baltimore, MD 21218-2685, USA
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40
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41
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Asselin P, Soulard P, Madebène B, Lewerenz M. Fourier transform infrared spectroscopy and ab initio theory of acid–hydrogen sulfide clusters: H2S–HCl, D2S–DCl and H2S–(HCl)2. Phys Chem Chem Phys 2007; 9:2868-76. [PMID: 17538732 DOI: 10.1039/b702824e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The rotationally resolved Fourier transform infrared (FTIR) spectrum of the nu(s) HCl and DCl stretching bands for the hydrogen bonded complex H2S-HCl and its isotopomer D2S-DCl have been observed in a supersonic jet at 0.02 cm(-1) resolution. In the same experimental conditions, two additional bands observed without rotational structure in the HCl range of the dimer have been assigned to the cyclic trimer H2S-(HCl)(2). The multidimensional coupling picture involving the donor stretch mode nu(s) and low frequency intermolecular modes already evidenced in several medium strength hydrogen bonded complexes is beautifully confirmed by the observation of completely separated hot band progressions in the 198 K cell spectrum of both dimers. Based on our anharmonic adiabatic approach for the treatment of the coupled vibrations, absolute vibrational frequencies, diagonal and off-diagonal anharmonicities as well as rovibrational coupling constants obtained from analyses of several 2-D subspaces at MP2 and CCSD(T) level are in excellent agreement with spectroscopic results. In the case of small light complexes, the combination of elevated rotational constants and a negligible contribution of intramolecular vibrational redistribution (IVR) improve the reliability of predissociation lifetime measurements, estimated to 180 ps for H2S-HCl and above 200 ps for D2S-DCl.
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Affiliation(s)
- Pierre Asselin
- Université Pierre et Marie Curie--Paris 6, CNRS Laboratoire Dynamique, Interactions et Réactivité, UMR 7075 Case 49, 4 Place Jussieu, 75252, Paris Cedex 05, France
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42
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Jena P, Castleman AW. Clusters: a bridge across the disciplines of physics and chemistry. Proc Natl Acad Sci U S A 2006; 103:10560-9. [PMID: 16835306 PMCID: PMC1636021 DOI: 10.1073/pnas.0601782103] [Citation(s) in RCA: 203] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Puru Jena
- *Department of Physics, Virginia Commonwealth University, Richmond, VA 23284; and
- To whom correspondence may be addressed. E-mail:
or
| | - A. W. Castleman
- Departments of Chemistry and Physics, Pennsylvania State University, University Park, PA 16802
- To whom correspondence may be addressed. E-mail:
or
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43
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Asselin P, Soulard P, Madebène B, Esmail Alikhani M, Lewerenz M. Vibrational dynamics of the hydrogen bond in H2S–HF: Fourier-transform-infrared spectra and ab initio theory. Phys Chem Chem Phys 2006; 8:1785-93. [PMID: 16633663 DOI: 10.1039/b517814b] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The rotationally resolved infrared spectrum of the hydrogen bonded complex H(2)S-HF and of its isotopomer D(2)S-DF in the HF/DF stretching range have been observed in a supersonic jet Fourier-transform infrared (FTIR) experiment and indicate a predissociation lifetime of 130 ps for H(2)S-HF. Complementary spectra taken at a temperature of 190 K in a cell without resolved rotational structure indicate the presence of strong anharmonic couplings between low frequency intermolecular modes and the HF donor stretch mode previously observed in other complexes with heavier acceptor molecules without rotational fine structure. The anharmonic analysis of the hot band progressions and of the rotational data confirm the coupling mechanism. The coupling constants and the absolute frequency of the hydrogen bonded stretch mode are in excellent agreement with theoretical predictions based on adiabatic variational calculations on potential surfaces computed at MP2 and CCSD(T) level. Complementary calculations with a perturbational approach further confirm the coupling model.
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Affiliation(s)
- Pierre Asselin
- Université Pierre et Marie Curie-Paris 6, CNRS, Laboratoire Dynamique, Interactions et Réactivité, UMR 7075, Case 49, Place Jussieu, 75252 Cedex Paris, France
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44
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Asselin P, Goubet M, Lewerenz M, Soulard P, Perchard JP. Rovibrational and dynamical properties of the hydrogen bonded complex (CH2)2S-HF: A combined free jet, cell, and neon matrix-Fourier transform infrared study. J Chem Phys 2004; 121:5241-52. [PMID: 15352817 DOI: 10.1063/1.1780167] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Fourier transform infrared spectra of the nu(s) (HF stretching) band of the (CH(2))(2)S-HF complex have been recorded at 0.1-0.5 cm(-1) resolution in a cooled cell, in a supersonic jet expansion seeded with argon and in a neon matrix at 4.5 K. The combination of controlled temperature effects over a range of 40-250 K and a sophisticated band contour simulation program allows the separation of homogeneous and inhomogeneous contributions and reveals significant anharmonic couplings between intramolecular and intermolecular vibrational modes similar to our previous work on (CH(2))(2)S-DF. The sign of the coupling constants is consistent with the expected strengthening of the hydrogen bond upon vibrational excitation of HF which also explains the observed small variations of the geometrical parameters in the excited state. The analysis of sum and difference combination bands involving nu(s) provides accurate values of intermolecular harmonic frequencies and anharmonicities and a good estimate of the dissociation energy of the complex. Frequencies and coupling parameters derived from gas phase spectra compare well with results from neon matrix experiments. The effective linewidth provides a lower bound for the predissociation lifetime of 10 ps. The comparison between effective linewidths and vibrational densities of states for (CH(2))(2)S-HF and -DF complexes highlights the important role of intramolecular vibrational redistribution in the vibrational dynamics of medium strength hydrogen bonds.
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Affiliation(s)
- P Asselin
- LADIR, UMR 7075, Bâtiment F74, Boîte 49, Université Pierre et Marie Curie (Paris VI), 75252 Paris, Cedex 05, France.
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45
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Goubet M, Asselin P, Soulard P, Lewerenz M, Latajka Z. Vibrational dynamics of medium strength hydrogen bonds: Fourier transform infrared spectra and band contour analysis of the DF stretching region of (CH[sub 2])[sub 2]S–DF. J Chem Phys 2004; 121:7784-94. [PMID: 15485240 DOI: 10.1063/1.1792595] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Fourier transform infrared spectra of the nu(s) band of the (CH2)(2)S-DF complex have been recorded at 0.1-0.5 cm(-1) resolution in a cooled cell and in a supersonic jet expansion seeded with argon. A sufficient density of (CH(2))(2)S-DF heterodimers is produced by a double injection nozzle device, which limits the possibility of reaction between thiirane and DF before the expansion. The observation of partially resolved PQR branch structures at cell temperatures as high as 252 K indicates relatively small effective line widths, which allow a detailed analysis of the underlying vibrational couplings and of the structural properties of the complex. The analysis of cell and free jet spectra in the temperature range 50-250 K is performed with a software package for the simulation and fitting of multiple hot band progressions in asymmetric rotors. The analysis reveals that the three low frequency hydrogen-bond modes are strongly coupled to the DF stretch with anharmonic coupling constants, which indicates a strengthening of the hydrogen bond upon vibrational excitation of DF. Rovibrational parameters and a reliable upper bound for the homogeneous line width have been extracted.
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Affiliation(s)
- M Goubet
- LADIR, UMR 7075, Bâtiment F74, Bte 49, Université Pierre et Marie Curie (Paris VI), 75252 Paris Cedex 05, France
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46
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Henson BF, Wilson KR, Robinson JM, Noble CA, Casson JL, Worsnop DR. Experimental isotherms of HCl on H[sub 2]O ice under stratospheric conditions: Connections between bulk and interfacial thermodynamics. J Chem Phys 2004; 121:8486-99. [PMID: 15511172 DOI: 10.1063/1.1803542] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
The adsorption of HCl on the surface of H(2)O ice has been measured at temperatures and pressures relevant to the upper troposphere and lower stratosphere. The measured HCl surface coverage is found to be at least 100 times lower than currently assumed in models of chlorine catalyzed ozone destruction in cold regions of the upper atmosphere. Measurements were conducted in a closed system by simultaneous application of surface spectroscopy and gas phase mass spectrometry to fully characterize vapor/solid equilibrium. Surface adsorption is clearly distinguished from bulk liquid or solid phases. From 180 to 200 K, submonolayer adsorption of HCl is well described by a Bragg-Williams modified Langmuir model which includes the dissociation of HCl into H(+) and Cl(-) ions. Furthermore, adsorption is consistent with two distinct states on the ice substrate, one in which the ions only weakly adsorb on separate sites, and another where the ions adsorb as an H(+)-Cl(-) pair on a single site with adsorption energy comparable to the bulk trihydrate. The number of substrate H(2)O molecules per adsorption site is also consistent with the stoichiometry of bulk hydrates under these conditions. The ionic states exist in equilibrium, and the total adsorption energy is a function of the relative population of both states. These observations and model provide a quantitative connection between the thermodynamics of the bulk and interfacial phases of HCl/H(2)O, and represent a consistent physicochemical model of the equilibrium system.
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Affiliation(s)
- B F Henson
- Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
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47
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Kisiel Z, Pietrewicz BA, Desyatnyk O, Pszczółkowski L, Struniewicz I, Sadlej J. Structure and properties of the weakly bound cyclic trimer (H2O)2HBr observed by rotational spectroscopy. J Chem Phys 2003. [DOI: 10.1063/1.1602067] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Fárnı́k M, Weimann M, Suhm MA. Acidic protons before take-off: A comparative jet Fourier transform infrared study of small HCl– and HBr–solvent complexes. J Chem Phys 2003. [DOI: 10.1063/1.1571525] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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Affiliation(s)
- Alex J Huneycutt
- Department of Chemistry, University of California, Berkeley, CA 94720, USA.
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