1
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Zhang XL, Yang SB, Hou D, Li H. An intramolecular vibrationally excited intermolecular potential energy surface and predicted 2OH overtone spectroscopy of H 2O-Kr. Phys Chem Chem Phys 2023; 25:29940-29950. [PMID: 37902029 DOI: 10.1039/d3cp04126c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
A new five-dimensional potential energy surface (PES) for H2O-Kr which explicitly includes the intramolecular 2OH overtone state of the H2O monomer is presented. The intermolecular potential energies were evaluated using explicitly correlated coupled cluster theory [CCSD(T)-F12] with a large basis set. Four vibrationally averaged analytical intermolecular PESs for H2O-Kr with H2O molecules in its |00+〉, |02+〉, |02-〉, and |11+〉 states are obtained by fitting to the multi-dimensional Morse/Long-Range potential function form. Each vibrationally averaged PES fitted to 578 points has root-mean-square (RMS) deviations smaller than 0.14 cm-1 and requires only 58 parameters. The combined radial discrete variable representation/angular finite basis representation method and the Lanczos algorithm were employed to calculate the rovibrational energy levels for |00+〉, |02+〉, |02-〉, and |11+〉 states of the H2O-Kr complexes. The calculated |02-〉Πf/e(101) ← |00+〉Σe(000) and |02+〉Πf/e(110) ← |00+〉Σe(101) infrared transitions are in excellent agreement with the experimental values with RMS discrepancies being only 0.007 and 0.016 cm-1, respectively. These analytical PESs can be used to provide reliable theoretical guidance for future infrared overtone spectroscopy of H2O-Kr.
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Affiliation(s)
- Xiao-Long Zhang
- The Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, P. R. China
| | - Shu-Bin Yang
- The Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, P. R. China
| | - Dan Hou
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, P. R. China.
| | - Hui Li
- Institute of Theoretical Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130023, P. R. China.
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2
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Yanes-Rodríguez R, Prosmiti R. Computational investigations of stable multiple-cage-occupancy He clathrate-like hydrostructures. Phys Chem Chem Phys 2023. [PMID: 37314248 DOI: 10.1039/d3cp00603d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
One of the several possibilities offered by the interesting clathrate hydrates is the opportunity to encapsulate several atoms or molecules, in such a way that more efficient storage materials could be explored or new molecules that otherwise do not exist could be created. These types of applications are receiving growing attention from technologists and chemists, given the future positive implications that they entail. In this context, we investigated the multiple cage occupancy of helium clathrate hydrates, to establish stable novel hydrate structures or ones similar to those predicted previously by experimental and theoretical studies. To this purpose, we analyzed the feasibility of including an increased number of He atoms inside the small (D) and large (H) cages of the sII structure through first-principles properly assessed density functional approaches. On the one hand, we have computed energetic and structural properties, in which we examined the guest-host and guest-guest interactions in both individual and two-adjacent clathrate-like sII cages by means of binding and evaporation energies. On the other hand, we have carried out a thermodynamical analysis on the stability of such He-containing hydrostructures in terms of changes in enthalpy, ΔH, Gibbs free energy, ΔG, and entropy, ΔS, during their formation process at various temperature and pressure values. In this way, we have been able to make a comparison with experiments, reaffirming the ability of computational DFT approaches to describe such weak guest-host interactions. In principle, the most stable structure involves the encapsulation of one and four He atoms inside the D and H sII cages, respectively; however, more He atoms could be entrapped under lower temperature and/or higher pressure thermodynamic conditions. We foresee such accurate computational quantum chemistry approaches contributing to the current emerging machine-learning model development.
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Affiliation(s)
- Raquel Yanes-Rodríguez
- Institute of Fundamental Physics (IFF-CSIC), CSIC, Serrano 123, 28006 Madrid, Spain.
- Doctoral Programme in Theoretical Chemistry and Computational Modelling, Doctoral School, Universidad Autónoma de Madrid, Spain
| | - Rita Prosmiti
- Institute of Fundamental Physics (IFF-CSIC), CSIC, Serrano 123, 28006 Madrid, Spain.
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3
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Hou D, Zhai Y, Sun TT, Zhang XL, Li H. Vibrationally excited intermolecular potential energy surfaces and the predicted near infrared overtone ( vOH = 2 ← 0) spectra of a H 2O-Ne complex. Phys Chem Chem Phys 2022; 24:12937-12949. [PMID: 35604277 DOI: 10.1039/d2cp01407f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ab initio intra- and inter-molecular potential energy surfaces (PESs) for the H2O-Ne system that explicitly incorporate the intramolecular overtone state (vOH = 2) of H2O are presented. The electronic structure computations have been carried out at the explicitly correlated coupled cluster theory [CCSD(T)-F12] level with an augmented correlation-consistent triple zeta basis set and an additional bond function. The vibrationally averaged three-dimensional intermolecular potentials for |00+〉, |02+〉, |02-〉 and |11+〉 are obtained analytically by fitting to the multi-dimensional Morse/Long-range potential function form. These fits to 46 980 points have a root-mean-square (RMS) discrepancy of 0.12 cm-1 for interaction energies less than 1000.0 cm-1. With the vibrationally averaged PESs for the H2O-Ne, we employed the combined radial discrete variable representation/angular finite basis representation method and Lanczos algorithm to calculate rovibrational energy levels (J = 0-10, ns ≤ 2). The predicted infrared transitions and intensities of the para- and ortho-H2O-Ne complex are in good agreement with the available experimental data for |02-〉 ← |00+〉, |02+〉 ← |00+〉 transitions. In particular, the RMS discrepancy for |02-〉∑e(000,0) ← |00+〉∑e(101,0), including P and R branch patterns, is only 0.045 cm-1, which is comparable with the experimental values. These results will provide reliable theoretical guidance for the future infrared overtone spectroscopy of clusters.
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Affiliation(s)
- Dan Hou
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, P. R. China.,Institute of Theoretical Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130023, P. R. China.
| | - Yu Zhai
- Institute of Theoretical Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130023, P. R. China.
| | - Ting-Ting Sun
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, P. R. China
| | - Xiao-Long Zhang
- The Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, P. R. China.
| | - Hui Li
- Institute of Theoretical Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130023, P. R. China.
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4
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Wespiser C, Putaud T, Kalugina YN, Soldera A, Roy PN, Michaut X, Ayotte P. Ro-translational dynamics of confined water: I - The confined asymmetric rotor model. J Chem Phys 2022; 156:074304. [DOI: 10.1063/5.0079565] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - Thomas Putaud
- Universite de Sherbrooke Departement de chimie, Canada
| | | | - Armand Soldera
- Department of Chemistry, Universite de Sherbrooke, Canada
| | - Pierre-Nicholas Roy
- Department of Chemistry, University of Waterloo Department of Chemistry, Canada
| | | | - Patrick Ayotte
- Département de Chimie, Universite de Sherbrooke Departement de chimie, Canada
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5
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Putaud T, Wespiser C, Bertin M, Fillion JH, Kalugina YN, Jeseck P, Milpanis A, Philippe L, Soulard P, Tremblay B, Tuloup C, Ayotte P, Michaut X. Ro-translational dynamics of confined water: II - Spectroscopic evidence of confinement effects on the far-infrared spectra of water isotopologues in argon and krypton matrices. J Chem Phys 2022; 156:074305. [DOI: 10.1063/5.0079566] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Thomas Putaud
- Universite de Sherbrooke Departement de chimie, Canada
| | | | | | | | | | | | | | | | | | | | | | - Patrick Ayotte
- Département de Chimie, Universite de Sherbrooke Departement de chimie, Canada
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6
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Grein F. Theoretical studies on complexes with ammonia: comparison with H 2O complexes: hydrogen bonding. Mol Phys 2021. [DOI: 10.1080/00268976.2021.1938268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Friedrich Grein
- Department of Chemistry, University of New Brunswick, Fredericton, Canada
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7
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Wespiser C, Ayotte P, Soldera A. Exploring rotation-translation coupling for a confined asymmetric rotor using molecular dynamics simulations: the case of the water molecule trapped inside a rare gas matrix. MOLECULAR SIMULATION 2020. [DOI: 10.1080/08927022.2020.1807019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Clément Wespiser
- Département de chimie, Université de Sherbrooke, Sherbrooke, Canada
| | - Patrick Ayotte
- Département de chimie, Université de Sherbrooke, Sherbrooke, Canada
| | - Armand Soldera
- Département de chimie, Université de Sherbrooke, Sherbrooke, Canada
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8
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Wang L, Zhang XL, Zhai Y, Nooijen M, Li H. Explicitly correlated ab initio potential energy surface and predicted rovibrational spectra for H 2O-N 2 and D 2O-N 2 complexes. J Chem Phys 2020; 153:054303. [PMID: 32770926 DOI: 10.1063/5.0009098] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
An ab initio intermolecular potential energy surface (PES) for the van der Waals complex of H2O-N2 that explicitly incorporates the intramolecular Q2 bending normal mode of the H2O monomer is presented. The electronic structure computations have been carried out at the explicitly correlated coupled cluster theory [CCSD(T)-F12] with an augmented correlation-consistent triple zeta basis set and an additional bond function. Analytic five-dimensional intermolecular PESs for ν2(H2O) = 0 and 1 are obtained by fitting to the multi-dimensional Morse/long-range potential function form. These fits to 40 890 points have the root-mean-square (rms) discrepancy of 0.88 cm-1 for interaction energies less than 2000.0 cm-1. The resulting vibrationally averaged PESs provide good representations of the experimental microwave and infrared data: for microwave transitions of H2O-N2, the rms discrepancy is only 0.0003 cm-1, and for infrared transitions of the A1 symmetry of the H2O(ν2 = 1 ← 0)-N2, the rms discrepancy is 0.001 cm-1. The calculated infrared band origin shifts associated with the ν2 bending vibration of water are 2.210 cm-1 and 1.323 cm-1 for H2O-N2 and D2O-N2, respectively, in good agreement with the experimental values of 2.254 cm-1 and 1.266 cm-1. The benchmark tests and comparisons of the predicted spectral properties are carried out between CCSD(T)-F12a and CCSD(T)-F12b approaches.
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Affiliation(s)
- Lu Wang
- Institute of Theoretical Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130023, China
| | - Xiao-Long Zhang
- Institute of Theoretical Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130023, China
| | - Yu Zhai
- Institute of Theoretical Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130023, China
| | - Marcel Nooijen
- Department of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Hui Li
- Institute of Theoretical Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130023, China
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9
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Yanes-Rodríguez R, Arismendi-Arrieta DJ, Prosmiti R. He Inclusion in Ice-like and Clathrate-like Frameworks: A Benchmark Quantum Chemistry Study of Guest-Host Interactions. J Chem Inf Model 2020; 60:3043-3056. [PMID: 32469514 DOI: 10.1021/acs.jcim.0c00349] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Energetics and structural properties of selected type and size He@hydrate frameworks, e.g., from regular structured ice channels to clathrate-like cages, are presented from first-principles quantum chemistry methods. The scarcity of information on He@hydrates makes such complexes challenging targets, while their computational study entails an interesting and arduous task. Some of them have been synthesized in the laboratory, which motivates further investigations on their stability. Hence, the main focus is to examine the performance and accuracy of different wave function-based electronic structure methods, such as MP2, CCSD(T), their explicitly correlated (F12) and domain-based local pair-natural orbital (DLPNO) analogs, as well as modern and conventional density functional theory (DFT) approaches, and analytical model potentials available. Different structures are considered, starting from the "simplest system" formed by a noble gas atom (such as He) and one water molecule, followed by the study of the "fundamental units" present in all ice-like and clathrate-like frameworks (such as pentamers and hexamers) and finally the description of interactions in the "building blocks" of three-dimensional (3D) ice channels (e.g., horizontal and perpendicular ice II and Ih) and clathrate-like cages, such as the 512 present in the most common sI, sII, and sH clathrate-hydrate structures. The idea is to provide well-converged DLPNO-CCSD(T) and DFMP2/CBS reference datasets that in turn are used to validate how DFT functionals (in total, 29 approaches from generalized-gradient approximation (GGA), meta-GGA, to hybrid and range-separated functionals, including dispersion correction treatments, were checked) and analytical semiempirical/ab initio-based potentials perform compared with high-level alternatives. Within all tested approaches, those best-performing were identified and classified. Most of the DFT/DFT-D functionals, as well as available analytical pairwise model potentials, face difficulties in describing both hydrogen-bonded water frameworks and dispersion bound He-water interactions. Including dispersion corrections yields an overall well-balanced performance for LCωPBE-D3BJ and PBE0-D4 functionals. Such benchmark datasets can benefit research into the development of new cheminformatics models, as can serve to guide and cross-check methodologies, lending increased predicted power to future molecular simulations for investigating the role of structures and phase transitions from nanoscale clusters to macroscopic crystalline structures.
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Affiliation(s)
| | - Daniel J Arismendi-Arrieta
- Institute of Fundamental Physics (IFF-CSIC), CSIC, Serrano 123, 28006 Madrid, Spain.,Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, Gipuzkoa, 20018 Donostia-San Sebastián, Spain
| | - Rita Prosmiti
- Institute of Fundamental Physics (IFF-CSIC), CSIC, Serrano 123, 28006 Madrid, Spain
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10
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Han CY, Jiang T, Zhu H, Fan HJ. Six-dimensional ab initio potential energy surface and bound States for He-H 2S complex. CHINESE J CHEM PHYS 2020. [DOI: 10.1063/1674-0068/cjcp1907145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Chao-ying Han
- School of Chemistry, Sichuan University, Chengdu 610064, China
| | - Ting Jiang
- School of Chemistry, Sichuan University, Chengdu 610064, China
| | - Hua Zhu
- School of Chemistry, Sichuan University, Chengdu 610064, China
| | - Hong-jun Fan
- School of Biological Engineering, Sichuan University of Science & Engineering, Zigong 643000, China
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11
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Jiang T, Han C, Zhu H. A new six-dimensional ab intito potential energy surface and rovibrational spectra for the Ar–H 2S complex. Mol Phys 2020. [DOI: 10.1080/00268976.2019.1612958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Ting Jiang
- School of Chemistry, Sichuan University, Chengdu, People’s Republic of China
| | - Chaoying Han
- School of Chemistry, Sichuan University, Chengdu, People’s Republic of China
| | - Hua Zhu
- School of Chemistry, Sichuan University, Chengdu, People’s Republic of China
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12
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Ziemkiewicz MP, Pluetzer C, Loreau J, van der Avoird A, Nesbitt DJ. Nuclear spin/parity dependent spectroscopy and predissociation dynamics in v OH = 2 ← 0 overtone excited Ne-H 2O clusters: Theory and experiment. J Chem Phys 2018; 147:214304. [PMID: 29221389 DOI: 10.1063/1.5001335] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Vibrationally state selective overtone spectroscopy and state- and nuclear spin-dependent predissociation dynamics of weakly bound ortho- and para-Ne-H2O complexes (D0(ortho) = 34.66 cm-1 and D0(para) = 31.67 cm-1) are reported, based on near-infrared excitation of van der Waals cluster bands correlating with vOH = 2 ← 0 overtone transitions (|02-〉 and |02+〉) out of the ortho (101) and para (000) internal rotor states of the H2O moiety. Quantum theoretical calculations for nuclear motion on a high level potential energy surface [CCSD(T)/VnZf12 (n = 3, 4)], corrected for basis set superposition error and extrapolated to the complete basis set (CBS) limit, are employed to successfully predict and assign Π-Σ, Σ-Σ, and Σ-Π infrared bands in the spectra, where Σ or Π represent approximate projections of the body-fixed H2O angular momentum along the Ne-H2O internuclear axis. IR-UV pump-probe experimental capabilities permit real-time measurements of the vibrational predissociation dynamics, which indicate facile intramolecular vibrational energy transfer from the H2O vOH = 2 overtone vibrations into the VdWs (van der Waals) dissociation coordinate on the τprediss = 15-25 ns time scale. Whereas all predicted strong transitions in the ortho-Ne-H2O complexes are readily detected and assigned, vibrationally mediated photolysis spectra for the corresponding para-Ne-H2O bands are surprisingly absent despite ab initio predictions of Q-branch intensities with S/N > 20-40. Such behavior signals the presence of highly selective nuclear spin ortho-para predissociation dynamics in the upper state, for which we offer a simple mechanism based on Ne-atom mediated intramolecular vibrational relaxation in the H2O subunit (i.e., |02±〉 → {|01±〉; v2 = 2}), which is confirmed by the ab initio energy level predictions and the nascent OH rotational (N), spin orbit (Π1/2,3/2), and lambda doublet product distributions.
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Affiliation(s)
| | - Christian Pluetzer
- West Pharmaceuticals Services Deutschland GmbH & Co. KG, Stolberger Strasse 21-41, 52249 Eschweiler, Germany
| | - Jérôme Loreau
- Université Libre de Bruxelles, Service de Chimie Quantique et Photophysique, 50 Ave. F. D. Roosevelt, CP 160/09, 1050 Brussels, Belgium
| | - Ad van der Avoird
- Theoretical Chemistry, Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - David J Nesbitt
- JILA, National Institute of Standards and Technology, University of Colorado, and Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, Colorado 80309, USA
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13
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Vanfleteren T, Földes T, Herman M, Liévin J, Loreau J, Coudert LH. Experimental and theoretical investigations of H 2O-Ar. J Chem Phys 2018; 147:014302. [PMID: 28688396 DOI: 10.1063/1.4990738] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We have used continuous-wave cavity ring-down spectroscopy to record the spectrum of H2O-Ar in the 2OH excitation range of H2O. 24 sub-bands have been observed. Their rotational structure (Trot = 12 K) is analyzed and the lines are fitted separately for ortho and para species together with microwave and far infrared data from the literature, with a unitless standard deviation σ=0.98 and 1.31, respectively. Their vibrational analysis is supported by a theoretical input based on an intramolecular potential energy surface obtained through ab initio calculations and computation of the rotational energy of sub-states of the complex with the water monomer in excited vibrational states up to the first hexad. For the ground and (010) vibrational states, the theoretical results agree well with experimental energies and rotational constants in the literature. For the excited vibrational states of the first hexad, they guided the assignment of the observed sub-bands. The upper state vibrational predissociation lifetime is estimated to be 3 ns from observed spectral linewidths.
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Affiliation(s)
- Thomas Vanfleteren
- Service de Chimie Quantique et Photophysique, CP160/09, Faculté des Sciences, Université Libre de Bruxelles, 50, Ave., Roosevelt B-1050, Belgium
| | - Tomas Földes
- Service de Chimie Quantique et Photophysique, CP160/09, Faculté des Sciences, Université Libre de Bruxelles, 50, Ave., Roosevelt B-1050, Belgium
| | - Michel Herman
- Service de Chimie Quantique et Photophysique, CP160/09, Faculté des Sciences, Université Libre de Bruxelles, 50, Ave., Roosevelt B-1050, Belgium
| | - Jacques Liévin
- Service de Chimie Quantique et Photophysique, CP160/09, Faculté des Sciences, Université Libre de Bruxelles, 50, Ave., Roosevelt B-1050, Belgium
| | - Jérôme Loreau
- Service de Chimie Quantique et Photophysique, CP160/09, Faculté des Sciences, Université Libre de Bruxelles, 50, Ave., Roosevelt B-1050, Belgium
| | - Laurent H Coudert
- Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Université Paris-Sud, Université Paris-Saclay, F-91405 Orsay, France
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14
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Ziemkiewicz MP, Pluetzer C, Wojcik M, Loreau J, van der Avoird A, Nesbitt DJ. Near infrared overtone (vOH = 2 ← 0) spectroscopy of Ne–H2O clusters. J Chem Phys 2017; 146:104204. [DOI: 10.1063/1.4977061] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Michael P. Ziemkiewicz
- JILA, National Institute of Standards and Technology, University of Colorado and Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, Colorado 80309, USA
| | - Christian Pluetzer
- JILA, National Institute of Standards and Technology, University of Colorado and Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, Colorado 80309, USA
| | - Michael Wojcik
- JILA, National Institute of Standards and Technology, University of Colorado and Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, Colorado 80309, USA
| | - Jérôme Loreau
- Service de Chimie Quantique et Photophysique, Université Libre de Bruxelles, 50 av. F.D. Roosevelt, CP 160/09, 1050 Brussels, Belgium
| | - Ad van der Avoird
- Theoretical Chemistry, Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - David J. Nesbitt
- JILA, National Institute of Standards and Technology, University of Colorado and Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, Colorado 80309, USA
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15
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Turgeon PA, Vermette J, Alexandrowicz G, Peperstraete Y, Philippe L, Bertin M, Fillion JH, Michaut X, Ayotte P. Confinement Effects on the Nuclear Spin Isomer Conversion of H 2O. J Phys Chem A 2017; 121:1571-1576. [PMID: 28157310 DOI: 10.1021/acs.jpca.7b00893] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The mechanism for interconversion between the nuclear spin isomers (NSI) of H2O remains shrouded in uncertainties. The temperature dependence displayed by NSI interconversion rates for H2O isolated in an argon matrix provides evidence that confinement effects are responsible for the dramatic increase in their kinetics with respect to the gas phase, providing new pathways for o-H2O↔p-H2O conversion in endohedral compounds. This reveals intramolecular aspects of the interconversion mechanism which may improve methodologies for the separation and storage of NSI en route to applications ranging from magnetic resonance spectroscopy and imaging to interpretations of spin temperatures in the interstellar medium.
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Affiliation(s)
| | - Jonathan Vermette
- Département de Chimie, Université de Sherbrooke , Sherbrooke J1K 2R1, Canada
| | - Gil Alexandrowicz
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology , Technion City, Haifa 32000, Israel
| | - Yoann Peperstraete
- LERMA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Université Paris 06 , F-75252 Paris, France
| | - Laurent Philippe
- LERMA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Université Paris 06 , F-75252 Paris, France
| | - Mathieu Bertin
- LERMA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Université Paris 06 , F-75252 Paris, France
| | - Jean-Hugues Fillion
- LERMA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Université Paris 06 , F-75252 Paris, France
| | - Xavier Michaut
- LERMA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Université Paris 06 , F-75252 Paris, France
| | - Patrick Ayotte
- Département de Chimie, Université de Sherbrooke , Sherbrooke J1K 2R1, Canada
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16
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He S, Chen D, Li Y, Feng E, Huang W. A four-dimensional potential energy surface and predicted infrared spectra for the Ne-D2O van der Waals complex in the ν2 bending region of D2O molecule. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.10.039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Stumpf V, Brunken C, Gokhberg K. Impact of metal ion's charge on the interatomic Coulombic decay widths in microsolvated clusters. J Chem Phys 2016; 145:104306. [PMID: 27634259 DOI: 10.1063/1.4962353] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Interatomic Coulombic decay (ICD) is an efficient electronic decay mechanism of electronically excited atoms and molecules embedded in an environment. For the series of isoelectronic Na(+), Mg(2+), and Al(3+) ions in aqueous solution, ultrashort ICD lifetimes of 3.1 fs, 1.5 fs, and 0.9 fs, respectively, were observed experimentally. The magnitude of the ICD lifetimes and their variation within the series were qualitatively explained by shortening metal-oxygen equilibrium distances and the increasing polarization of the water molecules as the metal's charge grows. We carried out an extensive ab initio investigation of the variation of the ICD widths with the metal-oxygen distances and the number of water neighbors in Na(+)-(H2O)m (m = 1-4) and Mg(2+)-(H2O)n (n = 1-6) clusters including and excluding polarization effects in the decaying state. We demonstrated that the effect of the induced polarization of the water ligand and the equilibrium cation-oxygen distance are equally important in determining the ordering and ratios of the ICD lifetimes in the series. Moreover, we showed that the induced polarization of the water molecules leads to a slower than linear growth of ICD width with the number of equivalent water neighbors; the non-linearity is stronger for Mg(2+). The ab initio ICD widths in microsolvated Na(+)-(H2O)4 and Mg(2+)-(H2O)6 clusters are found to be in good agreement with the experimental values.
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Affiliation(s)
- V Stumpf
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
| | - C Brunken
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
| | - K Gokhberg
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
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18
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Hou D, Ma YT, Zhang XL, Li H. The origins of intra- and inter-molecular vibrational couplings: A case study of H2O-Ar on full and reduced-dimensional potential energy surface. J Chem Phys 2016; 144:014301. [DOI: 10.1063/1.4939089] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Dan Hou
- Institute of Theoretical Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130023, People’s Republic of China
| | - Yong-Tao Ma
- Institute of Theoretical Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130023, People’s Republic of China
| | - Xiao-Long Zhang
- Institute of Theoretical Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130023, People’s Republic of China
| | - Hui Li
- Institute of Theoretical Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130023, People’s Republic of China
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19
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Wang S, He S, Dai L, Feng E, Huang W. A four-dimensional potential energy surface for the Ar–D2O van der Waals complex: Bending normal coordinate dependence. J Chem Phys 2015; 142:224307. [DOI: 10.1063/1.4921260] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Shenhao Wang
- Department of Physics, Anhui Normal University, Wuhu 241000, People’s Republic of China
| | - Shanshan He
- Department of Physics, Anhui Normal University, Wuhu 241000, People’s Republic of China
| | - Liangchen Dai
- Department of Physics, Anhui Normal University, Wuhu 241000, People’s Republic of China
| | - Eryin Feng
- Department of Physics, Anhui Normal University, Wuhu 241000, People’s Republic of China
| | - Wuying Huang
- Department of Physics, Anhui Normal University, Wuhu 241000, People’s Republic of China
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20
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Vítek A, Arismendi-Arrieta DJ, Rodríguez-Cantano R, Prosmiti R, Villarreal P, Kalus R, Delgado-Barrio G. Computational investigations of the thermodynamic properties of size-selected water and Ar-water clusters: high-pressure transitions. Phys Chem Chem Phys 2015; 17:8792-801. [PMID: 25745673 DOI: 10.1039/c4cp04862h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Classical parallel-tempering Monte Carlo simulations in the isothermal-isobaric ensemble were carried out for the (H2O)20 and Ar(H2O)20 clusters, over a wide range of temperatures (30-1000 K) and pressures (3 kPa-10 GPa) in order to study their thermodynamic properties and structural changes. The TIP4P/ice water model is employed for the water-water interactions, while both semiempirical and ab initio-based potentials are used to model the interaction between the rare-gas atoms and the water molecules. Temperature-pressure phase diagrams for these cluster systems were constructed by employing a two-dimensional multiple-histogram method. Structural changes were detected by analyzing the heat capacity landscape and the Pearson correlation coefficient profile for the interaction energy and volume. Those at high pressure correspond to solid-to-solid transitions and are found to be related to clathrate-like cages around the Ar atom. It is also shown that the formation and thermodynamic stability of such structures are determined by the intermolecular interaction between the rare-gas atoms and the host water molecules.
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Affiliation(s)
- Aleš Vítek
- IT4Innovations National Supercomputing Center, VSB - Technical University of Ostrava, 70833 Ostrava, Czech Republic
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21
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Simon A, Iftner C, Mascetti J, Spiegelman F. Water clusters in an argon matrix: infrared spectra from molecular dynamics simulations with a self-consistent charge density functional-based tight binding/force-field potential. J Phys Chem A 2015; 119:2449-67. [PMID: 25650885 DOI: 10.1021/jp508533k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The present theoretical study aims at investigating the effects of an argon matrix on the structures, energetics, dynamics, and infrared (IR) spectra of small water clusters (H2O)n (n = 1-6). The potential energy surface is obtained from a hybrid self-consistent charge density functional-based tight binding/force-field approach (SCC-DFTB/FF) in which the water clusters are treated at the SCC-DFTB level and the matrix is modeled at the FF level by a cluster consisting of ∼340 Ar atoms with a face centered cubic (fcc) structure, namely (H2O)n/Ar. With respect to a pure FF scheme, this allows a quantum description of the molecular system embedded in the matrix, along with all-atom geometry optimization and molecular dynamics (MD) simulations of the (H2O)n/Ar system. Finite-temperature IR spectra are derived from the MD simulations. The SCC-DFTB/FF scheme is first benchmarked on (H2O)Arn clusters against correlated wave function results and DFT calculations performed in the present work, and against FF data available in the literature. Regarding (H2O)n/Ar systems, the geometries of the water clusters are found to adapt to the fcc environment, possibly leading to intermolecular distortion and matrix perturbation. Several energetical quantities are estimated to characterize the water clusters in the matrix. In the particular case of the water hexamer, substitution and insertion energies for the prism, bag, and cage are found to be lower than that for the 6-member ring isomer. Finite-temperature MD simulations show that the water monomer has a quasifree rotation motion at 13 K, in agreement with experimental data. In the case of the water dimer, the only large-amplitude motion is a distortion-rotation intermolecular motion, whereas only vibration motions around the nuclei equilibrium positions are observed for clusters with larger sizes. Regarding the IR spectra, we find that the matrix environment leads to redshifts of the stretching modes and almost no shift of the bending modes. This is in agreement with experimental data. Furthermore, in the case of the water monomer and dimer, the magnitudes of the computed shifts are in fair agreement with the experimental values. The complex case of the water hexamer, which presents several low-energy isomers, is discussed.
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Affiliation(s)
- Aude Simon
- †Laboratoire de Chimie et Physique Quantiques LCPQ/IRSAMC, Université de Toulouse (UPS) and CNRS, 118 Route de Narbonne, F-31062 Toulouse, France
| | - Christophe Iftner
- †Laboratoire de Chimie et Physique Quantiques LCPQ/IRSAMC, Université de Toulouse (UPS) and CNRS, 118 Route de Narbonne, F-31062 Toulouse, France
| | - Joëlle Mascetti
- ‡Institut des Sciences Moléculaires, Université de Bordeaux and CNRS, 351 Cours de la Libération, 33405 Talence cedex, France
| | - Fernand Spiegelman
- †Laboratoire de Chimie et Physique Quantiques LCPQ/IRSAMC, Université de Toulouse (UPS) and CNRS, 118 Route de Narbonne, F-31062 Toulouse, France
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22
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Vanfleteren, Földes T, Vander Auwera J, Herman M. Analysis of a remarkable perpendicular band in Kr H2O with origin close to the ν1+ν3 R(0) line in H2O. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2014.11.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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da Cunha WF, de Oliveira RM, Roncaratti LF, Martins JBL, e Silva GM, Gargano R. Rovibrational energies and spectroscopic constants for H2O-Ng complexes. J Mol Model 2014; 20:2498. [PMID: 25425286 DOI: 10.1007/s00894-014-2498-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 10/13/2014] [Indexed: 11/28/2022]
Abstract
In this work, rovibrational energies and spectroscopic constants for the water -Ng complexes (Ng = He, Ne, Ar, Kr and Xe) were calculated through two different approaches (by solving the Nuclear Schrödinger equation and by applying the Dunham's method) and using two different potential energy curves (PEC). These PEC were determined using potential parameters obtained through molecular beam scattering experiments and accurate theoretical calculation, respectively. It was found that the theoretical rovibrational energies are in a good agreement (only for the lowest numbers of vibrational states) with those obtained through experimental PEC. Another important conclusions was regarding the calculated first two rovibrational energies for the H 2 O-Ar system, that are in a good agreement with the experimental data.
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Affiliation(s)
- Wiliam F da Cunha
- Institute of Physics, University of Brasilia, CP 4455, Brasilia, 70919-970, Brazil
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24
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Iftner C, Simon A, Korchagina K, Rapacioli M, Spiegelman F. A density functional tight binding/force field approach to the interaction of molecules with rare gas clusters: Application to (C6H6)+/0Arn clusters. J Chem Phys 2014; 140:034301. [DOI: 10.1063/1.4861431] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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25
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Lei J, Zhou Y, Xie D. Theoretical Study on the Rotational Spectra of Ar‐D232S Complex. CHINESE J CHEM PHYS 2013. [DOI: 10.1063/1674-0068/26/06/656-660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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26
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Tentscher PR, Arey JS. On the Nature of Interactions of Radicals with Polar Molecules. J Phys Chem A 2013; 117:12560-8. [DOI: 10.1021/jp407041e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peter R. Tentscher
- Environmental
Chemistry Modeling Laboratory, Swiss Federal Institute of Technology Lausanne
, 1015
Lausanne, Switzerland
| | - J. Samuel Arey
- Environmental
Chemistry Modeling Laboratory, Swiss Federal Institute of Technology Lausanne
, 1015
Lausanne, Switzerland
- Department
of Environmental Chemistry, Swiss Federal Institute of Aquatic Science and Technology
, 8600
Dübendorf, Switzerland
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27
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Schäffer R, Jansen G. Single-determinant-based symmetry-adapted perturbation theory without single-exchange approximation. Mol Phys 2013. [DOI: 10.1080/00268976.2013.827253] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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28
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Sun X, Hu Y, Zhu H. Ab initio potential energy surface and predicted rotational spectra for the Ne–H2O complex. J Chem Phys 2013; 138:204312. [DOI: 10.1063/1.4807497] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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29
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Patkowski K. Basis set converged weak interaction energies from conventional and explicitly correlated coupled-cluster approach. J Chem Phys 2013; 138:154101. [DOI: 10.1063/1.4800981] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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30
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Li J, Li Y, Guo H. Communication: Covalent nature of X⋯H2O (X = F, Cl, and Br) interactions. J Chem Phys 2013; 138:141102. [DOI: 10.1063/1.4801872] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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31
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Didriche K, Földes T. High resolution spectroscopy of the Ar-D2O and Ar-HDO molecular complexes in the near-infrared range. J Chem Phys 2013; 138:104307. [DOI: 10.1063/1.4794161] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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32
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Lei J, Zhou Y, Xie D, Zhu H. A new ab initio intermolecular potential energy surface and predicted rotational spectra of the Kr−H2O complex. J Chem Phys 2012; 137:224314. [DOI: 10.1063/1.4770263] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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33
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Lei J, Xiao M, Zhou Y, Xie D. A new ab initio intermolecular potential energy surface and predicted rotational spectra of the Ne-H2S complex. J Chem Phys 2012; 136:214307. [PMID: 22697543 DOI: 10.1063/1.4725715] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report a new three-dimensional ab initio intermolecular potential energy surface for the Ne-H(2)S complex with H(2)S monomer fixed at its experimental average structure. Using the supermolecular approach, the intermolecular potential energies were evaluated at CCSD(T) (coupled cluster with single and double and perturbative triple excitations) level with large basis sets including bond functions. The full counterpoise procedure was employed to correct the basis set superposition error. The planar T-shaped global minimum is located at the intermolecular distance of 3.51 Å with a well depth of 71.57 cm(-1). An additional planar local minimum was found to be separated from the global minimum with an energy barrier of 23.11 cm(-1). In addition, two first-order and one second-order saddle points were also located. The combined radial discrete variable representation/angular finite basis representation method and the Lanczos algorithm were employed to evaluate the rovibrational energy levels for eight isotopic species of the Ne-H(2)S complexes. The rotational transition frequencies for the eight isotopomers were also determined for the ground and first vibrational excited states, which are all in very good agreement with the available experimental values.
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Affiliation(s)
- Jinping Lei
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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34
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Lei J, Zhou Y, Xie D. A new ab initio intermolecular potential energy surface and predicted rotational spectra of the Ar−H2S complex. J Chem Phys 2012; 136:084310. [DOI: 10.1063/1.3689443] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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35
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Li S, Zheng R, Zhu Y, Duan C. Infrared diode laser spectroscopy of the Ne–D2O van der Waals complex: Strong Coriolis and angular-radial coupling. J Chem Phys 2011; 135:134304. [DOI: 10.1063/1.3644776] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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36
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Marinetti F, Gianturco FA. Water as a solute: competitive shell formation in (He,Ne) mixed microdroplets. Phys Chem Chem Phys 2011; 13:2136-44. [PMID: 21116567 DOI: 10.1039/c0cp01342k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Quantum Monte Carlo (QMC) stochastic calculations are carried out for a series of mixed rare gas clusters containing He and Ne which further include one H(2)O molecule as a single dopant. The ab initio potentials employed in the calculations, and the structural details provided by the QMC results, clearly reveal that the differences in the interaction forces which exist between the two solvent adatoms and the molecular solute are causing strongly competing environments that generate preferential shell structuring when surrounding the water molecule. The different behaviour of the two solvents, and the energetics of mixing, are analyzed in detail for small aggregates and for larger mixtures, revealing structural effects which originate from the different networking between solvent adatoms.
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Affiliation(s)
- F Marinetti
- Department of Chemistry and CNISM, University of Rome La Sapienza, Piazzale A. Moro 5, 00185 Rome, Italy
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37
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Daniel Boese A, Forbert H, Masia M, Tekin A, Marx D, Jansen G. Constructing simple yet accurate potentials for describing the solvation of HCl/waterclusters in bulk helium and nanodroplets. Phys Chem Chem Phys 2011; 13:14550-64. [DOI: 10.1039/c1cp20991d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Makarewicz J. Intermolecular potential energy surface of the water-carbon dioxide complex. J Chem Phys 2010; 132:234305. [DOI: 10.1063/1.3439693] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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39
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Koput J, Makarewicz J. Ab initio characterization of the Ca-HCl van der Waals complex. J Chem Phys 2010; 132:064307. [PMID: 20151743 DOI: 10.1063/1.3318467] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The equilibrium structure and three-dimensional potential energy surface of the Ca-HCl van der Waals complex in its ground electronic state have been determined from accurate ab initio calculations using the coupled-cluster method, CCSD(T), in conjunction with basis sets of quadruple- and quintuple-zeta quality. The core-electron correlation, high-order valence-electron correlation, and scalar relativistic effects were investigated. The Ca-HCl complex was confirmed to be linear at equilibrium, with the vibrationless dissociation energy (into Ca and HCl) D(e) of 287 cm(-1). The vibration-rotation energy levels of various Ca-HCl isotopomers were predicted using the variational method. The predicted spectroscopic constants can be useful in a further analysis of high-resolution vibration-rotation spectra of the Ca-HCl complex.
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Affiliation(s)
- Jacek Koput
- Department of Chemistry, Adam Mickiewicz University, Poznań 60-780, Poland.
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40
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Moudens A, Georges R, Goubet M, Makarewicz J, Lokshtanov SE, Vigasin AA. Direct absorption spectroscopy of water clusters formed in a continuous slit nozzle expansion. J Chem Phys 2009; 131:204312. [DOI: 10.1063/1.3264576] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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41
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Roncaratti LF, Belpassi L, Cappelletti D, Pirani F, Tarantelli F. Molecular-Beam Scattering Experiments and Theoretical Calculations Probing Charge Transfer in Weakly Bound Complexes of Water. J Phys Chem A 2009; 113:15223-32. [DOI: 10.1021/jp905584p] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- L. F. Roncaratti
- Dipartimento di Chimica, Università di Perugia, 06123 Perugia, Italy, Dipartimento di Chimica, Università di Perugia, and CNR I.S.T.M, 06123 Perugia, Italy, and Dipartimento di Ingegneria Civile e Ambientale, Università di Perugia, 06125 Perugia, Italy
| | - L. Belpassi
- Dipartimento di Chimica, Università di Perugia, 06123 Perugia, Italy, Dipartimento di Chimica, Università di Perugia, and CNR I.S.T.M, 06123 Perugia, Italy, and Dipartimento di Ingegneria Civile e Ambientale, Università di Perugia, 06125 Perugia, Italy
| | - D. Cappelletti
- Dipartimento di Chimica, Università di Perugia, 06123 Perugia, Italy, Dipartimento di Chimica, Università di Perugia, and CNR I.S.T.M, 06123 Perugia, Italy, and Dipartimento di Ingegneria Civile e Ambientale, Università di Perugia, 06125 Perugia, Italy
| | - F. Pirani
- Dipartimento di Chimica, Università di Perugia, 06123 Perugia, Italy, Dipartimento di Chimica, Università di Perugia, and CNR I.S.T.M, 06123 Perugia, Italy, and Dipartimento di Ingegneria Civile e Ambientale, Università di Perugia, 06125 Perugia, Italy
| | - F. Tarantelli
- Dipartimento di Chimica, Università di Perugia, 06123 Perugia, Italy, Dipartimento di Chimica, Università di Perugia, and CNR I.S.T.M, 06123 Perugia, Italy, and Dipartimento di Ingegneria Civile e Ambientale, Università di Perugia, 06125 Perugia, Italy
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42
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Belpassi L, Tarantelli F, Pirani F, Candori P, Cappelletti D. Experimental and theoretical evidence of charge transfer in weakly bound complexes of water. Phys Chem Chem Phys 2009; 11:9970-5. [DOI: 10.1039/b914792f] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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