1
|
Naskar P, Talukder S. Energetics and spectroscopic studies of CNO (-) (H 2 O) n $$ {\mathbf{CNO}}^{\left(\hbox{-} \right)}{\left({\mathbf{H}}_{\mathbf{2}}\mathbf{O}\right)}_{\mathbf{n}} $$ clusters and the temperature dependencies of the isomers: An approach based on a combined recipe of parallel tempering and quantum chemical methods. J Comput Chem 2024. [PMID: 39151062 DOI: 10.1002/jcc.27480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 07/22/2024] [Accepted: 07/30/2024] [Indexed: 08/18/2024]
Abstract
A system associated with several number of weak interactions supports numerous number of stable structures within a narrow range of energy. Often, a deterministic search method fails to locate the global minimum geometry as well as important local minimum isomers for such systems. Therefore, in this work, the stochastic search technique, namely parallel tempering, has been executed on the quantum chemical surface of theCNO (-) (H 2 O) n $$ {\mathrm{CNO}}^{\left(\hbox{-} \right)}{\left({\mathrm{H}}_2\mathrm{O}\right)}_n $$ system forn = 1 $$ n=1 $$ -8 to generate global minimum as well as several number of local minimum isomers. IR spectrum can act as the fingerprint property for such system to be identified. Thus, IR spectroscopic features have also been included in this work. Vertical detachment energy has also been calculated to obtain clear information about number of water molecules in several spheres around the central anion. In addition, in a real experimental scenario, not only the global but also the local minimum isomers play an important role in determining the average value of a particular physically observable property. Therefore, the relative conformational populations have been determined for all the evaluated structures for the temperature range between 20K and 400K. Further to understand the phase change behavior, the configurational heat capacities have also been calculated for different sizes.
Collapse
Affiliation(s)
- Pulak Naskar
- Department of Chemistry, Mrinalini Datta Mahavidyapith, Kolkata, India
| | | |
Collapse
|
2
|
Barbiero D, Bertaina G, Ceotto M, Conte R. Anharmonic Assignment of the Water Octamer Spectrum in the OH Stretch Region. J Phys Chem A 2023; 127:6213-6221. [PMID: 37477983 PMCID: PMC10405218 DOI: 10.1021/acs.jpca.3c02902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 07/03/2023] [Indexed: 07/23/2023]
Abstract
We interface the quasi-classical trajectory approach with an ab initio potential energy surface for water to assign the vibrational spectroscopical features of the OH stretch region of the water octamer cluster, which is considered to be a precursor of ice. An attempt by Li et al. to assign their recent reference experiment involved lower-level calculations based on an ad hoc scaled harmonic approach. Differently from the conclusions of this previous assignment, which invoked the contribution of 5 conformers and a solvated form of the water heptamer in the spectrum, we find out that the spectroscopic features can be related to the 4 conformers of the octamer lying lower in energy.
Collapse
Affiliation(s)
- Davide Barbiero
- Dipartimento
di Chimica, Università degli Studi
di Milano, via Golgi 19, 20133 Milano, Italy
| | - Gianluca Bertaina
- Istituto
Nazionale di Ricerca Metrologica, Strada delle Cacce 91, I-10135 Torino, Italy
| | - Michele Ceotto
- Dipartimento
di Chimica, Università degli Studi
di Milano, via Golgi 19, 20133 Milano, Italy
| | - Riccardo Conte
- Dipartimento
di Chimica, Università degli Studi
di Milano, via Golgi 19, 20133 Milano, Italy
| |
Collapse
|
3
|
Ghorai S, Nandi M, Chaudhury P. Impurity effects on phase change in Lennard-Jones atomic clusters. J CHEM SCI 2023; 135:35. [DOI: 10.1007/s12039-023-02156-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/16/2023] [Accepted: 02/19/2023] [Indexed: 07/19/2023]
|
4
|
Zheng H, Zhang YY, Wang T, Jiang S, Yan W, Wang C, Zhao Y, Hu HS, Yang J, Zhang W, Wu G, Dai D, Li G, Li J, Yang X, Jiang L. Spectroscopic snapshot for neutral water nonamer (H 2O) 9: Adding a H 2O onto a hydrogen bond-unbroken edge of (H 2O) 8. J Chem Phys 2023; 158:014301. [PMID: 36610966 DOI: 10.1063/5.0131217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Structural characterization of neutral water clusters is crucial to understanding the structures and properties of water, but it has been proven to be a challenging experimental target due to the difficulty in size selection. Here, we report the size-specific infrared spectra of confinement-free neutral water nonamer (H2O)9 based on threshold photoionization, using a tunable vacuum ultraviolet free-electron laser. Distinct OH stretch vibrational fundamentals in the 3200-3350 cm-1 region are observed, providing unique spectral signatures for the formation of an unprecedented (H2O)9 structure evolved by adding a ninth water molecule onto a hydrogen bond-unbroken edge of the (H2O)8 octamer with D2d symmetry. This nonamer structure coexists with the five previously identified structures that can be viewed as derived by inserting a ninth water molecule into a hydrogen bond-broken edge of the D2d/S4 octamer. These findings provide key microscopic information for systematic understanding of the formation and growth mechanism of dynamical hydrogen-bonding networks that are responsible for the structure and properties of condensed-phase water.
Collapse
Affiliation(s)
- Huijun Zheng
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yang-Yang Zhang
- Department of Chemistry and Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Tiantong Wang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Shuai Jiang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Wenhui Yan
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Chong Wang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Ya Zhao
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Han-Shi Hu
- Department of Chemistry and Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Jiayue Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Weiqing Zhang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Guorong Wu
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Dongxu Dai
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Gang Li
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Jun Li
- Department of Chemistry and Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Xueming Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Ling Jiang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| |
Collapse
|
5
|
Louisnard F, Geudtner G, Köster AM, Cuny J. Implementation of the parallel-tempering molecular dynamics method in deMon2k and application to the water hexamer. Theor Chem Acc 2021. [DOI: 10.1007/s00214-021-02765-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
6
|
Infrared spectroscopic study of hydrogen bonding topologies in the smallest ice cube. Nat Commun 2020; 11:5449. [PMID: 33116144 PMCID: PMC7595032 DOI: 10.1038/s41467-020-19226-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 09/21/2020] [Indexed: 12/03/2022] Open
Abstract
The water octamer with its cubic structure consisting of six four-membered rings presents an excellent cluster system for unraveling the cooperative interactions driven by subtle changes in the hydrogen-bonding topology. Despite prediction of many distinct structures, it has not been possible to extract the structural information encoded in their vibrational spectra because this requires size-selectivity of the neutral clusters with sufficient resolution to identify the contributions of the different isomeric forms. Here we report the size-specific infrared spectra of the isolated cold, neutral water octamer using a scheme based on threshold photoionization using a tunable vacuum ultraviolet free electron laser. A plethora of sharp vibrational bands features are observed. Theoretical analysis of these patterns reveals the coexistence of five cubic isomers, including two with chirality. The relative energies of these structures are found to reflect topology-dependent, delocalized multi-center hydrogen-bonding interactions. These results demonstrate that even with a common structural motif, the degree of cooperativity among the hydrogen-bonding network creates a hierarchy of distinct species. The implications of these results on possible metastable forms of ice are speculated. Spectroscopic studies of water clusters provide insight into the hydrogen bond structure of water and ice. The authors measure infrared spectra of neutral water octamers using a threshold photoionization technique based on a tunable vacuum-UV free electron laser, identifying two cubic isomers in addition to those previously observed.
Collapse
|
7
|
Vítek A, Arismendi-Arrieta DJ, Šarmanová M, Kalus R, Prosmiti R. Finite Systems under Pressure: Assessing Volume Definition Models from Parallel-Tempering Monte Carlo Simulations. J Phys Chem A 2020; 124:4036-4047. [PMID: 32370498 DOI: 10.1021/acs.jpca.0c00881] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We have investigated different approaches to handling parallel-tempering Monte Carlo (PTMC) simulations in the isothermal-isobaric ensemble of molecular cluster/nanoparticle systems for predicting structural phase diagram transitions. We have implemented various methodologies that consist of treating pressure implicitly through its effect on the volume. Thus, the main problem in the simulations under nonzero pressure becomes the volume definition of the finite nonperiodic system, and we considered approaches based on the particles' coordinates. Various volume models, namely container-volume, particle-volume, average-volume, ellipsoids-volume, and convex hull-volume, were employed, and the required corrections for each of them in the Monte Carlo computations were introduced. Finally, we explored the effects of volume/pressure changes for all models on structural phase transitions of a test system, such as the small "icelike" (H2O)12 water cluster. The temperature and pressure dependence of the cluster's heat capacity and energy-volume Pearson correlation coefficient were studied, phase diagrams were constructed using a multiple-histogram method, and attempts were made to identify phase transitions to particular cluster structures. Our results show significant differences between the employed volume models, and we discuss all pressure-induced, such as solid-solid-, solid-liquid-, and liquid-gas-like, phase transformations in the present study.
Collapse
Affiliation(s)
- Aleš Vítek
- IT4Innovations, VŠB-Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
| | - 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, 20018 Donostia-San Sebastián, Gipuzkoa, Spain
| | - Martina Šarmanová
- IT4Innovations, VŠB-Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic.,Olga Havlová Grammar School, Marie Majerové 1691, 708 00 Ostrava-Poruba, Czech Republic
| | - René Kalus
- IT4Innovations, VŠB-Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
| | - Rita Prosmiti
- Institute of Fundamental Physics (IFF-CSIC), CSIC, Serrano 123, 28006 Madrid, Spain
| |
Collapse
|
8
|
Samala N, Agmon N. Thermally Induced Hydrogen-Bond Rearrangements in Small Water Clusters and the Persistent Water Tetramer. ACS OMEGA 2019; 4:22581-22590. [PMID: 31909342 PMCID: PMC6941388 DOI: 10.1021/acsomega.9b03326] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 11/26/2019] [Indexed: 06/10/2023]
Abstract
Small water clusters absorb heat and catalyze pivotal atmospheric reactions. Yet, experiments produced conflicting results on water cluster distribution under atmospheric conditions. Additionally, it is unclear which "phase transitions" such clusters exhibit, at what temperatures, and what are their underlying molecular mechanisms. We find that logarithmically small tails in the radial probability densities of (H2O) n clusters (n = 2 - 6) provide direct testimony for such transitions. Using the best available water potential (MB-pol), an advanced thermostating algorithm (g-BAOAB), and sufficiently long trajectories, we map the "bifurcation", "melting", and (hitherto unexplored) "vaporization" transitions, finding that both melting and vaporization proceed via a "monomer on a ring" conformer, exhibiting huge distance fluctuations at the vaporization temperatures (T v). T v may play a role in determining the atmospheric cluster size distribution such that the dimer and tetramer, with their exceptionally low/high T v values, are under/over-represented in these distributions, as indeed observed in nondestructive mass spectrometric measurements.
Collapse
|
9
|
|
10
|
Chandra R, Jain K, Deo RV, Cripps S. Langevin-gradient parallel tempering for Bayesian neural learning. Neurocomputing 2019. [DOI: 10.1016/j.neucom.2019.05.082] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
11
|
Dorrell J, B. Pártay L. Thermodynamics and the potential energy landscape: case study of small water clusters. Phys Chem Chem Phys 2019; 21:7305-7312. [PMID: 30892325 DOI: 10.1039/c9cp00474b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We investigated the structure and the thermodynamic properties of small water clusters with the nested sampling computational technique, using two different water models, the coarse-grained mW (up to 25 molecules) and the flexible version of TIP3P (up to 16 molecules).
Collapse
|
12
|
Belega ED, Elyutin PV, Trubnikov DN. On the Problem of Criteria for Phase Transitions in Water Clusters (A Hexamer and Octamer Example). J STRUCT CHEM+ 2018. [DOI: 10.1134/s0022476618060185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
13
|
Yin J, Landau DP. Wang–Landau approach to the simulation of water clusters. MOLECULAR SIMULATION 2018. [DOI: 10.1080/08927022.2018.1506119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Junqi Yin
- Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - David P. Landau
- Center for Simulational Physics, The University of Georgia, Athens, GA, USA
| |
Collapse
|
14
|
Temelso B, Klein KL, Mabey JW, Pérez C, Pate BH, Kisiel Z, Shields GC. Exploring the Rich Potential Energy Surface of (H2O)11 and Its Physical Implications. J Chem Theory Comput 2018; 14:1141-1153. [DOI: 10.1021/acs.jctc.7b00938] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Berhane Temelso
- Provost’s
Office and Department of Chemistry, Furman University, Greenville, South Carolina 29613, United States
- Dean’s
Office, College of Arts and Sciences, and Department of Chemistry, Bucknell University, Lewisburg, Pennsylvania 17837, United States
| | - Katurah L. Klein
- Dean’s
Office, College of Arts and Sciences, and Department of Chemistry, Bucknell University, Lewisburg, Pennsylvania 17837, United States
| | - Joel W. Mabey
- Dean’s
Office, College of Arts and Sciences, and Department of Chemistry, Bucknell University, Lewisburg, Pennsylvania 17837, United States
| | - Cristóbal Pérez
- Department
of Chemistry, University of Virginia, McCormick Road, Charlottesville, Virginia 22904-4319, United States
- Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chausse 149, D-22761 Hamburg, Germany
| | - Brooks H. Pate
- Department
of Chemistry, University of Virginia, McCormick Road, Charlottesville, Virginia 22904-4319, United States
| | - Zbigniew Kisiel
- Institute
of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland
| | - George C. Shields
- Provost’s
Office and Department of Chemistry, Furman University, Greenville, South Carolina 29613, United States
- Dean’s
Office, College of Arts and Sciences, and Department of Chemistry, Bucknell University, Lewisburg, Pennsylvania 17837, United States
| |
Collapse
|
15
|
Brown SE, Götz AW, Cheng X, Steele RP, Mandelshtam VA, Paesani F. Monitoring Water Clusters “Melt” Through Vibrational Spectroscopy. J Am Chem Soc 2017; 139:7082-7088. [DOI: 10.1021/jacs.7b03143] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
| | | | - Xiaolu Cheng
- Department
of Chemistry and Henry Eyring Center for Theoretical Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Ryan P. Steele
- Department
of Chemistry and Henry Eyring Center for Theoretical Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | | | | |
Collapse
|
16
|
Miliordos E, Aprà E, Xantheas SS. A New, Dispersion-Driven Intermolecular Arrangement for the Benzene–Water Octamer Complex: Isomers and Analysis of their Vibrational Spectra. J Chem Theory Comput 2016; 12:4004-14. [DOI: 10.1021/acs.jctc.6b00668] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Evangelos Miliordos
- Physical
Sciences Division, Pacific Northwest National Laboratory, 902 Battelle
Boulevard, P.O. Box 999, MS K1-83, Richland, Washington 99352, United States
| | - Edoardo Aprà
- Environmental
Molecular Sciences Laboratory, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
| | - Sotiris S. Xantheas
- Physical
Sciences Division, Pacific Northwest National Laboratory, 902 Battelle
Boulevard, P.O. Box 999, MS K1-83, Richland, Washington 99352, United States
| |
Collapse
|
17
|
Cole WTS, Farrell JD, Wales DJ, Saykally RJ. Structure and torsional dynamics of the water octamer from THz laser spectroscopy near 215 μm. Science 2016; 352:1194-7. [PMID: 27257252 DOI: 10.1126/science.aad8625] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 05/02/2016] [Indexed: 11/02/2022]
Affiliation(s)
- William T S Cole
- Department of Chemistry, University of California, Berkeley, CA 94705, USA
| | - James D Farrell
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
| | - David J Wales
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK.
| | - Richard J Saykally
- Department of Chemistry, University of California, Berkeley, CA 94705, USA.
| |
Collapse
|
18
|
Pezzotti G, Puppulin L, La Rosa A, Boffelli M, Zhu W, McEntire BJ, Hosogi S, Nakahari T, Marunaka Y. Effect of pH and monovalent cations on the Raman spectrum of water: Basics revisited and application to measure concentration gradients at water/solid interface in Si3N4 biomaterial. Chem Phys 2015. [DOI: 10.1016/j.chemphys.2015.10.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
19
|
Oliveira LFL, Cuny J, Morinière M, Dontot L, Simon A, Spiegelman F, Rapacioli M. Phase changes of the water hexamer and octamer in the gas phase and adsorbed on polycyclic aromatic hydrocarbons. Phys Chem Chem Phys 2015; 17:17079-89. [PMID: 26067775 DOI: 10.1039/c5cp02099a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We investigate thermodynamic properties of small water clusters adsorbed on polycyclic aromatic hydrocarbons (PAHs), which are relevant systems in the context of astrophysical and atmospheric chemistry. We present heat capacity curves computed from parallel-tempering molecular dynamics and Monte Carlo simulations that were performed using the self-consistent-charge density-functional based tight-binding method. These curves are characteristic of the phase changes occurring in the aggregates and provide useful information on the evolution of the interaction between the water molecules and the PAHs as a function of temperature. After benchmarking our approach on the water hexamer and octamer in the gas phase, we present some results for these same clusters adsorbed on coronene and circumcoronene. When compared to the curves obtained for the isolated water clusters, the phase change temperature significantly decreases for the (H2O)8-PAH clusters whereas it depends on the nature of the PAH in the case of the hexamer. We analyse these differences as connected to the relative energies of the optimized characteristic isomers and to their dynamical behavior. We also evidence the population changes of the various cluster isomers as a function of temperature.
Collapse
Affiliation(s)
- Luiz Fernando L Oliveira
- Laboratoire de Chimie et Physique Quantiques LCPQ/IRSAMC, Université de Toulouse (UPS) and CNRS, 118 Route de Narbonne, F-31062 Toulouse, France
| | | | | | | | | | | | | |
Collapse
|
20
|
Shimamori T, Fujii A. Infrared Spectroscopy of Warm and Neutral Phenol–Water Clusters. J Phys Chem A 2015; 119:1315-22. [DOI: 10.1021/jp512495v] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Takuto Shimamori
- Department of Chemistry, Graduate School
of Science, Tohoku University, Sendai 980-8578, Japan
| | - Asuka Fujii
- Department of Chemistry, Graduate School
of Science, Tohoku University, Sendai 980-8578, Japan
| |
Collapse
|
21
|
Akase D, Aida M. Distribution of topologically distinct isomers of water clusters and dipole moments of constituent water molecules at finite atmospheric temperatures. J Phys Chem A 2014; 118:7911-24. [PMID: 25111018 DOI: 10.1021/jp504854f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hydrogen-bonding (HB) patterns correspond to topologically distinct isomers of a water cluster and can be expressed by digraphs. We make use of the HB pattern to divide the configuration space of a water cluster ((H2O)n, n = 3-8) at a finite temperature. Each configuration of a water cluster generated in Monte Carlo (MC) simulation is classified into an HB pattern. The number of observed HB patterns increases exponentially with the cluster size, whereas the population of the most abundant HB pattern decreases. The populations of the HB patterns are transformed into the relative Helmholtz energies. At a finite temperature, it can be observed that isomers other than local minimum structures on the potential energy surface are highly populated. The dipole moment of a constituent molecule in a water cluster is enhanced, depending on the molecular circumstance. The change is rationalized by the difference in the local HB type of the water molecule in the HB network.
Collapse
Affiliation(s)
- Dai Akase
- Center for Quantum Life Sciences, and Department of Chemistry, Graduate School of Science, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | | |
Collapse
|
22
|
|
23
|
Videla PE, Rossky PJ, Laria D. Nuclear quantum effects on the structure and the dynamics of [H2O]8 at low temperatures. J Chem Phys 2013; 139:174315. [DOI: 10.1063/1.4827935] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
24
|
Rühle V, Kusumaatmaja H, Chakrabarti D, Wales DJ. Exploring Energy Landscapes: Metrics, Pathways, and Normal-Mode Analysis for Rigid-Body Molecules. J Chem Theory Comput 2013; 9:4026-34. [PMID: 26592398 DOI: 10.1021/ct400403y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We present new methodology for exploring the energy landscapes of molecular systems, using angle-axis variables for the rigid-body rotational coordinates. The key ingredient is a distance measure or metric tensor, which is invariant to global translation and rotation. The metric is used to formulate a generalized nudged elastic band method for calculating pathways, and a full prescription for normal-mode analysis is described. The methodology is tested by mapping the potential energy and free energy landscape of the water octamer, described by the TIP4P potential.
Collapse
Affiliation(s)
- Victor Rühle
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Halim Kusumaatmaja
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom.,Department of Physics, Durham University , South Road, Durham DH1 3LE, United Kingdom
| | - Dwaipayan Chakrabarti
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom.,School of Chemistry, University of Birmingham , Edgbaston, Birmingham B15 2TT, United Kingdom
| | - David J Wales
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom
| |
Collapse
|
25
|
Acelas N, Hincapié G, Guerra D, David J, Restrepo A. Structures, energies, and bonding in the water heptamer. J Chem Phys 2013; 139:044310. [DOI: 10.1063/1.4816371] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
|
26
|
Simon A, Spiegelman F. Water clusters adsorbed on polycyclic aromatic hydrocarbons: Energetics and conformational dynamics. J Chem Phys 2013; 138:194309. [DOI: 10.1063/1.4805015] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
27
|
Pérez C, Lobsiger S, Seifert NA, Zaleski DP, Temelso B, Shields GC, Kisiel Z, Pate BH. Broadband Fourier transform rotational spectroscopy for structure determination: The water heptamer. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.04.014] [Citation(s) in RCA: 145] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
28
|
Borner A, Li Z, Levin DA. Development of a molecular-dynamics-based cluster-heat-capacity model for study of homogeneous condensation in supersonic water-vapor expansions. J Chem Phys 2013; 138:064302. [DOI: 10.1063/1.4790476] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
|
29
|
Tainter CJ, Skinner JL. The water hexamer: three-body interactions, structures, energetics, and OH-stretch spectroscopy at finite temperature. J Chem Phys 2013; 137:104304. [PMID: 22979856 DOI: 10.1063/1.4746157] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Using a newly developed and recently parameterized classical empirical simulation model for water that involves explicit three-body interactions, we determine the eleven most stable isomers of the water hexamer. We find that the lowest energy isomer is one of the cage structures, in agreement with far-IR and microwave experiments. The energy ordering for the binding energies is cage > glove > book > bag > chair > boat > chaise, and energies relative to the cage are in good agreement with CCSD(T) calculations. The three-body contributions to the cage, book, and chair are also in reasonable agreement with CCSD(T) results. The energy of each isomer results from a delicate balance involving the number of hydrogen bonds, the strain of these hydrogen bonds, and cooperative and anti-cooperative three-body interactions, whose contribution we can understand simply from the form of the three-body interactions in the simulation model. Oxygen-oxygen distances in the cage and book isomers are in good agreement with microwave experiments. Hydrogen-bond distances depend on both donor and acceptor, which can again be understood from the three-body model. Fully anharmonic OH-stretch spectra are calculated for these low-energy structures, and compared with shifted harmonic results from ab initio and density functional theory calculations. Replica-exchange molecular dynamics simulations were performed from 40 to 194 K, which show that the cage isomer has the lowest free energy from 0 to 70 K, and the book isomer has the lowest free energy from 70 to 194 K. OH-stretch spectra were calculated between 40 and 194 K, and results at 40, 63, and 79 K were compared to recent experiments, leading to re-assignment of the peaks in the experimental spectra. We calculate local OH-stretch cumulative spectral densities for different donor-acceptor types and compare to analogous results for liquid water.
Collapse
Affiliation(s)
- C J Tainter
- Theoretical Chemistry Institute and Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | |
Collapse
|
30
|
Richardson JO, Wales DJ, Althorpe SC, McLaughlin RP, Viant MR, Shih O, Saykally RJ. Investigation of Terahertz Vibration–Rotation Tunneling Spectra for the Water Octamer. J Phys Chem A 2013; 117:6960-6. [DOI: 10.1021/jp311306a] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Jeremy O. Richardson
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge,
CB2 1EW, United Kingdom
| | - David J. Wales
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge,
CB2 1EW, United Kingdom
| | - Stuart C. Althorpe
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge,
CB2 1EW, United Kingdom
| | - Ryan P. McLaughlin
- Department of Chemistry, University of California, Berkeley, California 94720,
United States
| | - Mark R. Viant
- Department of Chemistry, University of California, Berkeley, California 94720,
United States
| | - Orion Shih
- Department of Chemistry, University of California, Berkeley, California 94720,
United States
| | - Richard J. Saykally
- Department of Chemistry, University of California, Berkeley, California 94720,
United States
| |
Collapse
|
31
|
|
32
|
Kaneko T, Akimoto T, Yasuoka K, Mitsutake A, Zeng XC. Size-Dependent Phase Changes in Water Clusters. J Chem Theory Comput 2011; 7:3083-7. [DOI: 10.1021/ct200458m] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | | | | | | | - Xiao Cheng Zeng
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
| |
Collapse
|
33
|
Shields RM, Temelso B, Archer KA, Morrell TE, Shields GC. Accurate predictions of water cluster formation, (H₂O)(n=2-10). J Phys Chem A 2011; 114:11725-37. [PMID: 20882961 DOI: 10.1021/jp104865w] [Citation(s) in RCA: 161] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
An efficient mixed molecular dynamics/quantum mechanics model has been applied to the water cluster system. The use of the MP2 method and correlation consistent basis sets, with appropriate correction for BSSE, allows for the accurate calculation of electronic and free energies for the formation of clusters of 2-10 water molecules. This approach reveals new low energy conformers for (H(2)O)(n=7,9,10). The water heptamer conformers comprise five different structural motifs ranging from a three-dimensional prism to a quasi-planar book structure. A prism-like structure is favored energetically at low temperatures, but a chair-like structure is the global Gibbs free energy minimum past 200 K. The water nonamers exhibit less complexity with all the low energy structures shaped like a prism. The decamer has 30 conformers that are within 2 kcal/mol of the Gibbs free energy minimum structure at 298 K. These structures are categorized into four conformer classes, and a pentagonal prism is the most stable structure from 0 to 320 K. Results can be used as benchmark values for empirical water models and density functionals, and the method can be applied to larger water clusters.
Collapse
Affiliation(s)
- Robert M Shields
- Dean's Office, College of Arts and Sciences, and Department of Chemistry, Bucknell University, Lewisburg, Pennsylvania 17837, USA
| | | | | | | | | |
Collapse
|
34
|
Holden GL, Freeman DL. Monte Carlo Investigation of the Thermodynamic Properties of (H2O)n and (H2O)nH2 (n = 2−20) Clusters. J Phys Chem B 2011; 115:4725-44. [DOI: 10.1021/jp201082p] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Glen L. Holden
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - David L. Freeman
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
| |
Collapse
|
35
|
Yin J, Landau DP. Structural properties and thermodynamics of water clusters: A Wang–Landau study. J Chem Phys 2011; 134:074501. [DOI: 10.1063/1.3555761] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
|
36
|
Gelman-Constantin J, Carignano MA, Szleifer I, Marceca EJ, Corti HR. Structural transitions and dipole moment of water clusters (H2O)n=4–100. J Chem Phys 2010; 133:024506. [DOI: 10.1063/1.3455716] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
37
|
Hernández-Rojas J, Calvo F, Rabilloud F, Bretón J, Gomez Llorente JM. Modeling Water Clusters on Cationic Carbonaceous Seeds. J Phys Chem A 2010; 114:7267-74. [DOI: 10.1021/jp101584n] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- J. Hernández-Rojas
- Departamento de Física Fundamental II and IUdEA, Universidad de La Laguna, 38205, La Laguna, Tenerife, Spain, and LASIM, Université de Lyon and CNRS UMR 5579, Bât. A. Kastler, 43 Bd du 11 Novembre 1918, F69622 Villeurbanne Cedex, France
| | - F. Calvo
- Departamento de Física Fundamental II and IUdEA, Universidad de La Laguna, 38205, La Laguna, Tenerife, Spain, and LASIM, Université de Lyon and CNRS UMR 5579, Bât. A. Kastler, 43 Bd du 11 Novembre 1918, F69622 Villeurbanne Cedex, France
| | - F. Rabilloud
- Departamento de Física Fundamental II and IUdEA, Universidad de La Laguna, 38205, La Laguna, Tenerife, Spain, and LASIM, Université de Lyon and CNRS UMR 5579, Bât. A. Kastler, 43 Bd du 11 Novembre 1918, F69622 Villeurbanne Cedex, France
| | - J. Bretón
- Departamento de Física Fundamental II and IUdEA, Universidad de La Laguna, 38205, La Laguna, Tenerife, Spain, and LASIM, Université de Lyon and CNRS UMR 5579, Bât. A. Kastler, 43 Bd du 11 Novembre 1918, F69622 Villeurbanne Cedex, France
| | - J. M. Gomez Llorente
- Departamento de Física Fundamental II and IUdEA, Universidad de La Laguna, 38205, La Laguna, Tenerife, Spain, and LASIM, Université de Lyon and CNRS UMR 5579, Bât. A. Kastler, 43 Bd du 11 Novembre 1918, F69622 Villeurbanne Cedex, France
| |
Collapse
|
38
|
González BS, Noya EG, Vega C, Sesé LM. Nuclear Quantum Effects in Water Clusters: The Role of the Molecular Flexibility. J Phys Chem B 2010; 114:2484-92. [DOI: 10.1021/jp910770y] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Briesta S. González
- Departamento Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Eva G. Noya
- Departamento Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Carlos Vega
- Departamento Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Luis M. Sesé
- Departamento Ciencias y Técnicas Fisicoquímicas, Facultad de Ciencias, UNED, Paseo Senda del Rey 9, 28040 Madrid, Spain
| |
Collapse
|
39
|
Asare E, Musah AR, Curotto E, Freeman DL, Doll JD. The thermodynamic and ground state properties of the TIP4P water octamer. J Chem Phys 2009; 131:184508. [DOI: 10.1063/1.3259047] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
40
|
Mizuse K, Hamashima T, Fujii A. Infrared Spectroscopy of Phenol−(H2O)n>10: Structural Strains in Hydrogen Bond Networks of Neutral Water Clusters. J Phys Chem A 2009; 113:12134-41. [DOI: 10.1021/jp9061187] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Kenta Mizuse
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Toru Hamashima
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Asuka Fujii
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| |
Collapse
|
41
|
Luo Y, Maeda S, Ohno K. Automated exploration of stable isomers of H+(H2O)n(n= 5-7) viaab initiocalculations: An application of the anharmonic downward distortion following algorithm. J Comput Chem 2009; 30:952-61. [DOI: 10.1002/jcc.21117] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
42
|
Nishio K, Mikami M. Reversible structure transformation in ice nanocluster. J Chem Phys 2009; 130:154302. [DOI: 10.1063/1.3116785] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
|
43
|
Douady J, Calvo F, Spiegelman F. Structure, stability, and infrared spectroscopy of (H2O)nNH4+ clusters: A theoretical study at zero and finite temperature. J Chem Phys 2008; 129:154305. [DOI: 10.1063/1.2987304] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
44
|
Watanabe Y, Maeda S, Ohno K. Intramolecular vibrational frequencies of water clusters (H2O)n (n=2–5): Anharmonic analyses using potential functions based on the scaled hypersphere search method. J Chem Phys 2008; 129:074315. [DOI: 10.1063/1.2973605] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
45
|
Frantsuzov PA, Mandelshtam VA. Equilibrium properties of quantum water clusters by the variational Gaussian wavepacket method. J Chem Phys 2008; 128:094304. [DOI: 10.1063/1.2833004] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
46
|
Egorov AV, Brodskaya EN, Laaksonen A. Molecular Dynamics Simulation Study of Solid‐Liquid Phase Transition in Water Clusters. The Effect of Cluster Size. ACTA ACUST UNITED AC 2008. [DOI: 10.1080/15533170701853975] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Andrei V. Egorov
- a Institute of Physics, St. Petersburg University , St. Petersburg, Russia
| | - Elena N. Brodskaya
- b Institute of Chemistry, St. Petersburg University , St. Petersburg, Russia
| | - Aatto Laaksonen
- c Division of Physical Chemistry , Arrhenius Laboratory, Stockholm University , Stockholm, Sweden
| |
Collapse
|
47
|
Maeda S, Ohno K. Microsolvation of Hydrogen Sulfide: Exploration of H2S·(H2O)n and SH-·H3O+·(H2O)n-1 (n = 5−7) Cluster Structures on Ab Initio Potential Energy Surfaces by the Scaled Hypersphere Search Method. J Phys Chem A 2008; 112:2962-8. [DOI: 10.1021/jp710494n] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Satoshi Maeda
- Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Koichi Ohno
- Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| |
Collapse
|
48
|
Janeiro-Barral PE, Mella M, Curotto E. Structure and Energetics of Ammonia Clusters (NH3)n (n = 3−20) Investigated Using a Rigid−Polarizable Model Derived from ab Initio Calculations. J Phys Chem A 2008; 112:2888-98. [DOI: 10.1021/jp7106796] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paula E. Janeiro-Barral
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K., and Department of Chemistry and Physics, Arcadia University, Glenside, Pennsylvania 19038
| | - Massimo Mella
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K., and Department of Chemistry and Physics, Arcadia University, Glenside, Pennsylvania 19038
| | - E. Curotto
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K., and Department of Chemistry and Physics, Arcadia University, Glenside, Pennsylvania 19038
| |
Collapse
|
49
|
Maeda S, Ohno K. Structures of Water Octamers (H2O)8: Exploration on Ab Initio Potential Energy Surfaces by the Scaled Hypersphere Search Method. J Phys Chem A 2007; 111:4527-34. [PMID: 17461560 DOI: 10.1021/jp070606a] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The potential energy surface (PES) of water octamers has been explored by the scaled hypersphere search method. Among 164 minima on the PES (based on MP2/6-311++G(3df,2p)//B3LYP/6-311+G(d,p) calculations), the cubic structure with D2d symmetry has been confirmed to be the global minimum. In a thermodynamic simulation using these 164 structures, the cubic structure with S4 symmetry has the highest population at low temperature, though double rings can become dominant as temperature going up, in good accord with a recent Monte Carlo simulation using an empirical potential. A transition temperature from cubic to noncubic has significantly been underestimated when potential energy data of B3LYP/6-311+G(d,p) calculations are employed in the simulation. This serious discrepancy between the MP2 and the B3LYP results suggests an importance of dispersion interactions for discussions on thermodynamics of water octamers.
Collapse
Affiliation(s)
- Satoshi Maeda
- Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | | |
Collapse
|
50
|
Hernández-Rojas J, González BS, James T, Wales DJ. Thermodynamics of water octamer in a uniform electric field. J Chem Phys 2006; 125:224302. [PMID: 17176136 DOI: 10.1063/1.2400853] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
We study the water octamer in a uniform electric field using the all-exchanges parallel tempering Monte Carlo method in the canonical ensemble. The heat capacity, quenched energy configurations, and the order parameter Q(4) are employed to understand the phase changes observed as a function of temperature and the strength of the applied electric field. At a low field strength of 0.1 V A(-1) a solidlike to liquidlike "melting" transition is detected. The corresponding heat capacity peak appears around 206 K, where Q(4) shows a significant change of slope. For E> or =0.5 V A(-1) such features are absent. However, at E=0.5 V A(-1) we find a solidlike to solidlike transition between cubic and extended structures around T approximately 25 K.
Collapse
Affiliation(s)
- Javier Hernández-Rojas
- Departamento de Física Fundamental II, Universidad de La Laguna, 38205 La Laguna, Tenerife, Spain.
| | | | | | | |
Collapse
|