1
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Demaison J, Vogt N, Perrin A. Equilibrium Structures of Propane and 2,2-Difluoropropane and Comparison with Other Two-Top Molecules. Molecules 2024; 29:4877. [PMID: 39459246 PMCID: PMC11510024 DOI: 10.3390/molecules29204877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2024] [Revised: 10/08/2024] [Accepted: 10/09/2024] [Indexed: 10/28/2024] Open
Abstract
The Born-Oppenheimer ab initio equilibrium structures of propane (CH3)2CH2 and 2,2-difluoropropane (CH3)2CF2 were computed at the CCSD(T) level of theory using a basis set of quadruple zeta quality. The semiexperimental structure of propane was also determined from the ground state rotational constants corrected for rovibrational corrections calculated at the MP2 level of theory. Structural comparisons are made with other molecules and are discussed in terms of the quantum theory of atoms in molecules.
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Affiliation(s)
- Jean Demaison
- Physique des Lasers, Atomes et Molécules, Université de Lille, Bât. P5, CEDEX, 59655 Villeneuve d’Ascq, France
| | - Natalja Vogt
- Faculty of Sciences, University of Ulm, 89069 Ulm, Germany;
| | - Agnès Perrin
- Laboratoire de Météorologie Dynamique/IPSL CNRS, Ecole Polytechnique, RD36, CEDEX, 91128 Palaiseau, France;
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2
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Postnikov A, Majtyka-Piłat A, Chrobak D, Deniszczyk J. Calculated vibration spectrum of calcium hexahydroxodizincate dihydrate (qatranaite). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 318:124414. [PMID: 38759573 DOI: 10.1016/j.saa.2024.124414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 05/01/2024] [Accepted: 05/05/2024] [Indexed: 05/19/2024]
Abstract
On the basis of first-principles electronic structure calculations, crystallographic parameters have been refined for calcium hydroxozincate (Qatranaite mineral), and the vibration properties (frequencies and eigenvectors) calculated. A detailed analysis of vibration modes is done, in the context of comparison with infrared and Raman spectra previously available. Special attention is paid to a posteriori symmetry analysis of vibration modes, discussing the latters' attribution to four irreducible representations of the P21/c space group, and to identifying stretchings and bendings of particular chemical bonds, pronounced in different vibrations. It turns out that high-frequency (>700 cm-1) vibrations of hydroxyl groups bridging the Ca or Zn cations differ quite considerably for crystallographically distinct hydroxyl positions. It is shown that the vibrations involving hydroxyl groups and crystalline water typically come about in quadruplets at very close frequencies, whereby different irreducible representations reflect different combinations of similar "molecular" vibrations of four identical entities (of each hydroxyl or water) present in the unit cell. However, some vibrations show exceptions from this rule. In addition to interpretation of earlier experimental investigations, our study indicates that the low-frequency (<700 cm-1) vibrations within the cation-hydroxyl connected skeleton are of more "solid-state-like" character and cannot be reasonably interpreted in terms of "molecular" vibrations within ZnO4 or CaO6 units.
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Affiliation(s)
- Andrei Postnikov
- LCP-A2MC, Université de Lorraine, Bd Arago 1, F-57078 Metz Cedex 3, France; Institute of Materials Engineering, University of Silesia in Katowice, 75 Pułku Piechoty 1A, 41-500, Chorzów, Poland.
| | - Anna Majtyka-Piłat
- Institute of Materials Engineering, University of Silesia in Katowice, 75 Pułku Piechoty 1A, 41-500, Chorzów, Poland
| | - Dariusz Chrobak
- Institute of Materials Engineering, University of Silesia in Katowice, 75 Pułku Piechoty 1A, 41-500, Chorzów, Poland
| | - Józef Deniszczyk
- Institute of Materials Engineering, University of Silesia in Katowice, 75 Pułku Piechoty 1A, 41-500, Chorzów, Poland.
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3
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Gorelov S, Titov A, Tolicheva O, Konevega A, Shvetsov A. Determination of Hydrogen Bonds in GROMACS: A New Implementation to Overcome Memory Limitation. J Chem Inf Model 2024; 64:6241-6246. [PMID: 39119674 DOI: 10.1021/acs.jcim.3c02087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
This work introduces a new faster implementation of the hydrogen bond network (complex arrangement of hydrogen bonds between or within molecules) search algorithm in biomacromolecules and their environment. Existing implementation of such an algorithm in GROMACS [Abraham et al. GROMACS 2024.2 Manual. 2024.] has limitations in the analysis of large structures and trajectories. The new implementation, in the form of a native GROMACS trajectory analysis module, allows for quick analysis of molecular dynamics trajectories without restrictions, thus overcoming the limitations of the original algorithm. The application of the developed method enabled the acquisition and analysis of hydrogen bond networks in the studied defensin-like protein Pentadiplandra brazzeana, as well as the study of hydrogen bond occupancies between the protein's residues and water molecules. The data obtained using the new implementation coincided with the experimental data.
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Affiliation(s)
- Sergey Gorelov
- Petersburg Nuclear Physics Institute named by B.P. Konstantinov of National Research Centre "Kurchatov Institute", Gatchina 188300, Russia
- Peter the Great St. Petersburg Polytechnic University, St. Petersburg 195251, Russia
| | - Anatoly Titov
- Petersburg Nuclear Physics Institute named by B.P. Konstantinov of National Research Centre "Kurchatov Institute", Gatchina 188300, Russia
| | - Olga Tolicheva
- Petersburg Nuclear Physics Institute named by B.P. Konstantinov of National Research Centre "Kurchatov Institute", Gatchina 188300, Russia
| | - Andrey Konevega
- Petersburg Nuclear Physics Institute named by B.P. Konstantinov of National Research Centre "Kurchatov Institute", Gatchina 188300, Russia
- Peter the Great St. Petersburg Polytechnic University, St. Petersburg 195251, Russia
- National Research Centre "Kurchatov Institute", Moscow 123098, Russia
| | - Alexey Shvetsov
- Petersburg Nuclear Physics Institute named by B.P. Konstantinov of National Research Centre "Kurchatov Institute", Gatchina 188300, Russia
- Peter the Great St. Petersburg Polytechnic University, St. Petersburg 195251, Russia
- National Research Centre "Kurchatov Institute", Moscow 123098, Russia
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4
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Tripathy V, Raghavachari K. Fragment-based models for dissociation of strong acids in water: Electrostatic embedding minimizes the dependence on the fragmentation schemes. J Chem Phys 2023; 159:124106. [PMID: 38127382 DOI: 10.1063/5.0164089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 08/28/2023] [Indexed: 12/23/2023] Open
Abstract
Fragmentation methods such as MIM (Molecules-in-Molecules) provide a route to accurately model large systems and have been successful in predicting their structures, energies, and spectroscopic properties. However, their use is often limited to systems at equilibrium due to the inherent complications in the choice of fragments in systems away from equilibrium. Furthermore, the presence of charges resulting from any heterolytic bond breaking may increase the fragmentation error. We have previously suggested EE-MIM (Electrostatically Embedded Molecules-In-Molecules) as a method to mitigate the errors resulting from the missing long-range interactions in molecular clusters in equilibrium. Here, we show that the same method can be applied to improve the performance of MIM to solve the longstanding problem of dependency of the fragmentation energy error on the choice of the fragmentation scheme. We chose four widely used acid dissociation reactions (HCl, HClO4, HNO3, and H2SO4) as test cases due to their importance in chemical processes and complex reaction potential energy surfaces. Electrostatic embedding improves the performance at both one and two-layer MIM as shown by lower EE-MIM1 and EE-MIM2 errors. The EE-MIM errors are also demonstrated to be less dependent on the choice of the fragmentation scheme by analyzing the variation in fragmentation energy at the points with more than one possible fragmentation scheme (points where the fragmentation scheme changes). EE-MIM2 with M06-2X as the low-level resulted in a variation of less than 1 kcal/mol for all the cases and 1 kJ/mol for all but three cases, rendering our method fragmentation scheme-independent for acid dissociation processes.
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Affiliation(s)
- Vikrant Tripathy
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, USA
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5
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Vithana VP, Guo Z, Deacon GB, Junk PC. Syntheses, Structures, and Corrosion Inhibition of Various Alkali Metal Carboxylate Complexes. Molecules 2023; 28:5515. [PMID: 37513387 PMCID: PMC10385946 DOI: 10.3390/molecules28145515] [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: 07/04/2023] [Revised: 07/12/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
Complexes of the alkali metals Li-Cs with 3-thiophenecarboxylate (3tpc), 2-methyl-3-furoate (2m3fur), 3-furoate (3fur), 4-hydroxycinnamate (4hocin), and 4-hydroxybenzoate (4hob) ions were prepared via neutralisation reactions, and the structures of [Li2(3tpc)2]n (1Li); [K2(3tpc)2]n (1K); [Rb(3tpc)(H2O)]n (1Rb); [Cs{H(3tpc)2}]n (1Cs); [Li2(2m3fur)2(H2O)3] (2Li); [K2(2m3fur)2(H2O)]n (2K); [Li(3fur)]n(3Li); [K(4hocin](H2O)3]n (4K); [Rb{H(4hocin)2}]n.nH2O (4Rb); [Cs(4hocin)(H2O)]n (4Cs); [Li(4hob)]n (5Li); [K(4hob)(H2O)3]n (5K); [Rb(4hob)(H2O)]n (5Rb); and [Cs(4hob)(H2O)]n (5Cs) were determined via X-ray crystallography. Bulk products were also characterised via XPD, IR, and TGA measurements. No sodium derivatives could be obtained as crystallographically suitable single crystals. All were obtained as coordination polymers with a wide variety of carboxylate-binding modes, except for dinuclear 2Li. Under conditions that normally gave coordinated carboxylate ions, the ligation of hydrogen dicarboxylate ions was observed in 1Cs and 4Rb, with short H-bonds and short O…O distances associated with the acidic hydrogen. The alkali-metal carboxylates showed corrosion inhibitor properties inferior to those of the corresponding rare-earth carboxylates.
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Affiliation(s)
- Vidushi P Vithana
- College of Science & Engineering, James Cook University, Townsville, QLD 4811, Australia
| | - Zhifang Guo
- College of Science & Engineering, James Cook University, Townsville, QLD 4811, Australia
| | - Glen B Deacon
- School of Chemistry, Monash University, Clayton, VIC 3800, Australia
| | - Peter C Junk
- College of Science & Engineering, James Cook University, Townsville, QLD 4811, Australia
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6
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Zhang S, Li K, Ma Y, Bu Y, Liang Z, Yang Z, Zhang J. The Adsorption Mechanism of Hydrogen on FeO Crystal Surfaces: A Density Functional Theory Study. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2051. [PMID: 37513062 PMCID: PMC10384720 DOI: 10.3390/nano13142051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023]
Abstract
The hydrogen-based direct reduction of iron ores is a disruptive routine used to mitigate the large amount of CO2 emissions produced by the steel industry. The reduction of iron oxides by H2 involves a variety of physicochemical phenomena from macroscopic to atomistic scales. Particularly at the atomistic scale, the underlying mechanisms of the interaction of hydrogen and iron oxides is not yet fully understood. In this study, density functional theory (DFT) was employed to investigate the adsorption behavior of hydrogen atoms and H2 on different crystal FeO surfaces to gain a fundamental understanding of the associated interfacial adsorption mechanisms. It was found that H2 molecules tend to be physically adsorbed on the top site of Fe atoms, while Fe atoms on the FeO surface act as active sites to catalyze H2 dissociation. The dissociated H atoms were found to prefer to be chemically bonded with surface O atoms. These results provide a new insight into the catalytic effect of the studied FeO surfaces, by showing that both Fe (catalytic site) and O (binding site) atoms contribute to the interaction between H2 and FeO surfaces.
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Affiliation(s)
- Shujie Zhang
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Kejiang Li
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yan Ma
- Max-Planck-Institut für Eisenforschung, Max-Planck-Straße 1, 40237 Dusseldorf, Germany
| | - Yushan Bu
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Zeng Liang
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Zonghao Yang
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jianliang Zhang
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
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7
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Okoli U, Rishi K, Beaucage G, Kammler HK, McGlasson A, Chauby M, Narayanan V, Grammens J, Kuppa VK. Dispersion of modified fumed silica in elastomeric nanocomposites. POLYMER 2023. [DOI: 10.1016/j.polymer.2022.125407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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8
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Al-Khaldi A, Fadlallah MM, Alhajri F, Maarouf AA. Hybrid G/BN@2H-MoS 2 Nanomaterial Composites: Structural, Electronic and Molecular Adsorption Properties. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4351. [PMID: 36558204 PMCID: PMC9784729 DOI: 10.3390/nano12244351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/01/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
Hybrid structures often possess superior properties to those of their component materials. This arises from changes in the structural or physical properties of the new materials. Here, we investigate the structural, electronic, and gas-adsorption properties of hybrid structures made from graphene/hexagonal boron nitride and 2H-molybdenum disulfide (G/BN@MoS2) monolayers. We consider hybrid systems in which the G/BN patch is at the Mo plane (model I) and the S plane (model II). We find that the implanted hexagon of G or BN in MoS2 alters its electronic properties: G@MoS2 (I,II) are metallic, while BN@MoS2 (I) is an n-type conducting and BN@MoS2 (II) is semiconducting. We study the molecular adsorption of some diatomic gases (H2, OH, N2, NO, CO), triatomic gases (CO2, NO2, H2S, SO2), and polyatomic gases (COOH, CH4, and NH3) on our hybrid structures while considering multiple initial adsorption sites. Our results suggest that the hybrid systems may be suitable materials for some applications: G@MOS2 (I) for oxygen reduction reactions, BN@MoS2 (I,II) for NH3-based hydrogen production, and G@MoS2 (I) and BN@MoS2 (I,II) for filtration of No, Co, SO2, H2S, and NO2.
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Affiliation(s)
- Amal Al-Khaldi
- Department of Physics, Institute for Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | | | - Fawziah Alhajri
- Department of Physics, Institute for Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Ahmed A. Maarouf
- Department of Physics, Faculty of Basic Sciences, The German University in Cairo, New Cairo 13411, Egypt
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9
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Defoort-Levkov GRN, Bahm A, Philipp P. Influence of water contamination on the sputtering of silicon with low-energy argon ions investigated by molecular dynamics simulations. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2022; 13:986-1003. [PMID: 36225852 PMCID: PMC9520830 DOI: 10.3762/bjnano.13.86] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 09/06/2022] [Indexed: 06/16/2023]
Abstract
Focused ion beams (FIB) are a common tool in nanotechnology for surface analysis, sample preparation for electron microscopy and atom probe tomography, surface patterning, nanolithography, nanomachining, and nanoprinting. For many of these applications, a precise control of ion-beam-induced processes is essential. The effect of contaminations on these processes has not been thoroughly explored but can often be substantial, especially for ultralow impact energies in the sub-keV range. In this paper we investigate by molecular dynamics (MD) simulations how one of the most commonly found residual contaminations in vacuum chambers (i.e., water adsorbed on a silicon surface) influences sputtering by 100 eV argon ions. The incidence angle was changed from normal incidence to close to grazing incidence. For the simulation conditions used in this work, the adsorption of water favours the formation of defects in silicon by mixing hydrogen and oxygen atoms into the substrate. The sputtering yield of silicon is not significantly changed by the contamination, but the fraction of hydrogen and oxygen atoms that is sputtered largely depends on the incidence angle. This fraction is the largest for incidence angles between 70 and 80° defined with respect to the sample surface. Overall, it changes from 25% to 65%.
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Affiliation(s)
- Grégoire R N Defoort-Levkov
- Advanced Instrumentation for Nano-Analytics (AINA), Materials Research and Technology Department (MRT), Luxembourg Institute of Science and Technology (LIST), 4422 Belvaux, Luxembourg
- University of Luxembourg, 4365 Esch-sur-Alzette, Luxembourg
| | - Alan Bahm
- Thermo Fisher Scientific, Hillsboro, OR, 97124, USA
| | - Patrick Philipp
- Advanced Instrumentation for Nano-Analytics (AINA), Materials Research and Technology Department (MRT), Luxembourg Institute of Science and Technology (LIST), 4422 Belvaux, Luxembourg
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10
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Alhajri F, Fadlallah MM, Alkhaldi A, Maarouf AA. Hybrid MXene-Graphene/Hexagonal Boron Nitride Structures: Electronic and Molecular Adsorption Properties. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2739. [PMID: 36014604 PMCID: PMC9416010 DOI: 10.3390/nano12162739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 07/27/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
Recent advances in experimental techniques allow for the fabrication of hybrid structures. Here, we study the electronic and molecular adsorption properties of the graphene (G)/hexagonal boron nitride (h-BN)-MXenes (Mo2C) hybrid nanosheets. We use first-principles calculations to explore the structure and electronic properties of the hybrid structures of G-2H-Mo2C and h-BN-2H-Mo2C with two different oxygen terminations of the Mo2C surface. The embedding of G or h-BN patches creates structural defects at the patch-Mo2C border and adds new states in the vicinity of the Fermi energy. Since this can be utilized for molecular adsorption and/or sensing, we investigate the ability of the G-M-O1 and BN-M-O1 hybrid structures to adsorb twelve molecules. Generally, the adsorption on the hybrid systems is significantly higher than on the pristine systems, except for N2 and H2, which are weakly adsorbed on all systems. We find that OH, NO, NO2, and SO2 are chemisorbed on the hybrid systems. COOH may be chemisorbed, or it may dissociate depending on its location at the edge between the G/h-BN and the MXene. NH3 is chemisorbed/physisorbed on the BN/G-M-O1 systems. CO, H2S, CO2, and CH4 are physisorbed on the hybrid systems. Our results indicate that the studied hybrid systems can be used for molecular filtration/sensing and catalysis.
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Affiliation(s)
- Fawziah Alhajri
- Department of Physics, Science College, Imam Abdulrahman Bin Faisal University, Jubail 3196, Saudi Arabia
| | | | - Amal Alkhaldi
- Department of Physics, Science College, Imam Abdulrahman Bin Faisal University, Jubail 3196, Saudi Arabia
| | - Ahmed A. Maarouf
- Department of Physics, Faculty of Basic Sciences, German University in Cairo, New Cairo City 11835, Egypt
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11
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Belyakov AV, Losev VA, Rykov AN, Shishkov IF, Kuznetsov VV, Khakhalev AV, Sheremetev AB. Combined gas-phase electron diffraction and coupled cluster determination of the molecular structure of 3,4-dinitrofurazan - A propellant ingredient. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Ceselin G, Barone V, Tasinato N. Accurate Biomolecular Structures by the Nano-LEGO Approach: Pick the Bricks and Build Your Geometry. J Chem Theory Comput 2021; 17:7290-7311. [PMID: 34666488 PMCID: PMC8582257 DOI: 10.1021/acs.jctc.1c00788] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
The determination
of accurate equilibrium molecular structures
plays a fundamental role for understanding many physical–chemical
properties of molecules, ranging from the precise evaluation of the
electronic structure to the analysis of the role played by dynamical
and environmental effects in tuning their overall behavior. For small
semi-rigid systems in the gas phase, state-of-the-art quantum chemical
computations rival the most sophisticated experimental (from, for
example, high-resolution spectroscopy) results. For larger molecules,
more effective computational approaches must be devised. To this end,
we have further enlarged the compilation of available semi-experimental
(SE) equilibrium structures, now covering the most important fragments
containing H, B, C, N, O, F, P, S, and Cl atoms collected in the new
SE100 database. Next, comparison with geometries optimized by methods
rooted in the density functional theory showed that the already remarkable
results delivered by PW6B95 and, especially, rev-DSDPBEP86 functionals
can be further improved by a linear regression (LR) approach. Use
of template fragments (taken from the SE100 library) together with
LR estimates for the missing interfragment parameters paves the route
toward accurate structures of large molecules, as witnessed by the
very small deviations between computed and experimental rotational
constants. The whole approach has been implemented in a user-friendly
tool, termed nano-LEGO, and applied to a number of demanding case
studies.
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Affiliation(s)
- Giorgia Ceselin
- Scuola Normale Superiore, Piazza Dei Cavalieri 7, I-56126 Pisa, Italy
| | - Vincenzo Barone
- Scuola Normale Superiore, Piazza Dei Cavalieri 7, I-56126 Pisa, Italy
| | - Nicola Tasinato
- Scuola Normale Superiore, Piazza Dei Cavalieri 7, I-56126 Pisa, Italy
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13
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Martinelli A, Otero-Mato JM, Garaga MN, Elamin K, Rahman SMH, Zwanziger JW, Werner-Zwanziger U, Varela LM. A New Solid-State Proton Conductor: The Salt Hydrate Based on Imidazolium and 12-Tungstophosphate. J Am Chem Soc 2021; 143:13895-13907. [PMID: 34406757 PMCID: PMC8414554 DOI: 10.1021/jacs.1c06656] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
![]()
We report the structure
and charge transport properties of a novel
solid-state proton conductor obtained by acid–base chemistry
via proton transfer from 12-tungstophosphoric acid to imidazole. The
resulting material (henceforth named Imid3WP) is a solid
salt hydrate that, at room temperature, includes four water molecules
per structural unit. To our knowledge, this is the first attempt to
tune the properties of a heteropolyacid-based solid-state proton conductor
by means of a mixture of water and imidazole, interpolating between
water-based and ionic liquid-based proton conductors of high thermal
and electrochemical stability. The proton conductivity of Imid3WP·4H2O measured at truly anhydrous conditions
reads 0.8 × 10–6 S cm–1 at
322 K, which is higher than the conductivity reported for any other
related salt hydrate, despite the lower hydration. In the pseudoanhydrous
state, that is, for Imid3WP·2H2O, the proton
conductivity is still remarkable and, judging from the low activation
energy (Ea = 0.26 eV), attributed to structural
diffusion of protons. From complementary X-ray diffraction data, vibrational
spectroscopy, and solid-state NMR experiments, the local structure
of this salt hydrate was resolved, with imidazolium cations preferably
orienting flat on the surface of the tungstophosphate anions, thus
achieving a densely packed solid material, and water molecules of
hydration that establish extremely strong hydrogen bonds. Computational
results confirm these structural details and also evidence that the
path of lowest energy for the proton transfer involves primarily imidazole
and water molecules, while the proximate Keggin anion contributes
with reducing the energy barrier for this particular pathway.
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Affiliation(s)
- Anna Martinelli
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-41296 Gothenburg, Sweden
| | - José M Otero-Mato
- Grupo de Nanomateriais, Fotónica e Materia Branda, Departamento de Física de Partículas, Universidade de Santiago de Compostela, Campus Vida s/n, E-15782 Santiago de Compostela, Spain
| | - Mounesha N Garaga
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Khalid Elamin
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-41296 Gothenburg, Sweden
| | | | - Josef W Zwanziger
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | | | - Luis M Varela
- Grupo de Nanomateriais, Fotónica e Materia Branda, Departamento de Física de Partículas, Universidade de Santiago de Compostela, Campus Vida s/n, E-15782 Santiago de Compostela, Spain
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14
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The equilibrium molecular structure of 3-methyl-4-nitro- and 4-methyl-3-nitrofuroxans by gas-phase electron diffraction and coupled cluster calculations. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128856] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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15
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Salvio R, D'Abramo M. Conformational Mobility and Efficiency in Supramolecular Catalysis. A Computational Approach to Evaluate the Performances of Enzyme Mimics. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Riccardo Salvio
- Dipartimento di Scienze e Tecnologie Chimiche Università degli Studi di Roma “Tor Vergata” Via della Ricerca Scientifica 1 00133 Roma Italy
- ISB CNR Sezione Meccanismi di Reazione Università degli Studi di Roma La Sapienza 00185 Roma Italy
| | - Marco D'Abramo
- Dipartimento di Chimica Università degli Studi di Roma La Sapienza P. le Aldo Moro 5 00185 Roma Italy
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Thermodynamic Characterization of Free and Surface Water of Colloidal Unimolecular Polymer (CUP) Particles Utilizing DSC. Polymers (Basel) 2020; 12:polym12061417. [PMID: 32599952 PMCID: PMC7362172 DOI: 10.3390/polym12061417] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/19/2020] [Accepted: 06/22/2020] [Indexed: 11/25/2022] Open
Abstract
Colloidal Unimolecular Polymer (CUP) particles are spheroidal, 3–9 nm with charged groups on the surface and a hydrophobic core, which offer a larger surface water fraction to improve the analysis of its characteristics. Differential scanning calorimetry (DSC) was performed to determine the characteristics of surface water. These properties include the amount of surface water, the layer thickness, density, specific heat of the surface water above and below the freezing point of water, melting point depression of free water, effect of charge density and particle size. The charge density on the CUP surface was varied as well as the molecular weight which controls the particle diameter. The surface water is proportional to the weight fraction of CUP <20%. Analogous to recrystallization the CUP particles were trapped in the ice when rapidly cooled but slow cooling excluded the CUP, causing inter-molecular counterion condensation and less surface water. The density of surface water was calculated to be 1.023 g/mL to 1.056 g/mL depending on the surface charge density. The thickness of surface water increased with surface charge density. The specific heat of surface water was found to be 3.04 to 3.07 J/g·K at 253.15 K and 3.07 to 3.09 J/g·K at 293.15 K. The average area occupied by carboxylate and ester groups on the CUP surface were determined.
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Liu L, Li X, Liu Z, Dai S, Huang X, Zhao J. Tunable bending modulus and bending limit of oxidized graphene. NANOSCALE 2020; 12:1623-1628. [PMID: 31872842 DOI: 10.1039/c9nr07282a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Graphene is highly flexible and widely used in flexible devices. However, is the oxidized graphene more flexible than graphene? This is still under debate between simulations and experiments. By employing density functional theory calculations, we show that the bending modulus of oxidized graphene is quite tunable by changing the type and coverage of the functional groups, as well as the bending direction. The hydroxyl increases the bending modulus of graphene, but epoxide can degrade the bending modulus in the armchair bending direction, making the oxidized graphene more flexible than graphene. On the other hand, there exists a curvature limit during bending the oxidized graphene, where OH hydrogen bonds start to transform into O-H covalent bonds. Generally, our results demonstrate the effects of the functional groups and bending direction on the flexibility of oxidized graphene, which should be helpful to design graphene-based flexible devices.
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Affiliation(s)
- Lizhao Liu
- School of Mathematical and Physical Sciences, Dalian University of Technology, Panjin 124221, China
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Belyakov AV, Nikolaenko KO, Oskorbin AA, Vogt N, Rykov AN, Shishkov IF. Semiexperimental equilibrium structure of 1-methylisatin from gas-phase electron diffraction data and structural changes in isatin due to 1-methyl and 5-fluoro substituents as predicted by coupled cluster computations. Mol Phys 2018. [DOI: 10.1080/00268976.2018.1554193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | | | | | - Natalja Vogt
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia
- Section of Chemical Information Systems, University of Ulm, Ulm, Germany
| | - Anatolii N. Rykov
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | - Igor F. Shishkov
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia
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19
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Belyakov AV, Kulishenko RY, Oskorbin AA. Semiexperimental equilibrium molecular structures of the maleimide and phthalimide. Mol Phys 2018. [DOI: 10.1080/00268976.2018.1510139] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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20
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Kirschner KN, Heiden W, Reith D. Small Alcohols Revisited: CCSD(T) Relative Potential Energies for the Minima, First- and Second-Order Saddle Points, and Torsion-Coupled Surfaces. ACS OMEGA 2018; 3:419-432. [PMID: 31457902 PMCID: PMC6641652 DOI: 10.1021/acsomega.7b01367] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 11/22/2017] [Indexed: 06/10/2023]
Abstract
The elucidation of conformations and relative potential energies (rPEs) of small molecules has a long history across a diverse range of fields. Periodically, it is helpful to revisit what conformations have been investigated and to provide a consistent theoretical framework for which clear comparisons can be made. In this paper, we compute the minima, first- and second-order saddle points, and torsion-coupled surfaces for methanol, ethanol, propan-2-ol, and propanol using consistent high-level MP2 and CCSD(T) methods. While for certain molecules more rigorous methods were employed, the CCSD(T)/aug-cc-pVTZ//MP2/aug-cc-pV5Z theory level was used throughout to provide relative energies of all minima and first-order saddle points. The rPE surfaces were uniformly computed at the CCSD(T)/aug-cc-pVTZ//MP2/aug-cc-pVTZ level. To the best of our knowledge, this represents the most extensive study for alcohols of this kind, revealing some new aspects. Especially for propanol, we report several new conformations that were previously not investigated. Moreover, two metrics are included in our analysis that quantify how the selected surfaces are similar to one another and hence improve our understanding of the relationship between these alcohols.
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Affiliation(s)
- Karl N. Kirschner
- Department
of Computer Science, Department of Electrical Engineering, Mechanical
Engineering and Technical Journalism, and Institute of Visual Computing, Bonn-Rhein-Sieg University of Applied Sciences, Grantham-Allee 20, 53757 Sankt Augustin, Germany
| | - Wolfgang Heiden
- Department
of Computer Science, Department of Electrical Engineering, Mechanical
Engineering and Technical Journalism, and Institute of Visual Computing, Bonn-Rhein-Sieg University of Applied Sciences, Grantham-Allee 20, 53757 Sankt Augustin, Germany
| | - Dirk Reith
- Department
of Computer Science, Department of Electrical Engineering, Mechanical
Engineering and Technical Journalism, and Institute of Visual Computing, Bonn-Rhein-Sieg University of Applied Sciences, Grantham-Allee 20, 53757 Sankt Augustin, Germany
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21
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Vogt N, Demaison J, Krasnoshchekov SV, Stepanov NF, Rudolph HD. Determination of accurate semiexperimental equilibrium structure of proline using efficient transformations of anharmonic force fields among the series of isotopologues. Mol Phys 2017. [DOI: 10.1080/00268976.2017.1292370] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Natalja Vogt
- Section of Chemical Information Systems, Faculty of Sciences, University of Ulm, Ulm, Germany
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Jean Demaison
- Section of Chemical Information Systems, Faculty of Sciences, University of Ulm, Ulm, Germany
| | | | - Nikolay F. Stepanov
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Heinz Dieter Rudolph
- Section of Chemical Information Systems, Faculty of Sciences, University of Ulm, Ulm, Germany
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22
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Vogt N, Demaison J, Cocinero EJ, Écija P, Lesarri A, Rudolph HD, Vogt J. The equilibrium molecular structures of 2-deoxyribose and fructose by the semiexperimental mixed estimation method and coupled-cluster computations. Phys Chem Chem Phys 2016; 18:15555-63. [PMID: 27212641 DOI: 10.1039/c6cp01842d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mixed estimation method yields very accurate equilibrium structures, as observed in deoxyribose and fructose.
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Affiliation(s)
- Natalja Vogt
- Section of Chemical Information Systems
- Faculty of Sciences
- University of Ulm
- 89069 Ulm
- Germany
| | - Jean Demaison
- Section of Chemical Information Systems
- Faculty of Sciences
- University of Ulm
- 89069 Ulm
- Germany
| | - Emilio J. Cocinero
- Departamento de Química Física
- Facultad de Ciencia y Tecnología
- Universidad del País Vasco (UPV-EHU)
- 48080 Bilbao
- Spain
| | - Patricia Écija
- Departamento de Química Física
- Facultad de Ciencia y Tecnología
- Universidad del País Vasco (UPV-EHU)
- 48080 Bilbao
- Spain
| | - Alberto Lesarri
- Departamento de Química Física y Química Inorgánica
- Facultad de Ciencias
- Universidad de Valladolid
- 47011 Valladolid
- Spain
| | - Heinz Dieter Rudolph
- Section of Chemical Information Systems
- Faculty of Sciences
- University of Ulm
- 89069 Ulm
- Germany
| | - Jürgen Vogt
- Section of Chemical Information Systems
- Faculty of Sciences
- University of Ulm
- 89069 Ulm
- Germany
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23
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Wang H, Agmon N. Protonated Water Dimer on Benzene: Standing Eigen or Crouching Zundel? J Phys Chem B 2015; 119:2658-67. [DOI: 10.1021/jp509004j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Huan Wang
- The Fritz Haber Research
Center, Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Noam Agmon
- The Fritz Haber Research
Center, Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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24
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Vogt N, Demaison J, Rudolph HD, Perrin A. Interplay of experiment and theory: high resolution infrared spectrum and accurate equilibrium structure of BF2OH. Phys Chem Chem Phys 2015; 17:30440-9. [DOI: 10.1039/c5cp05444c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Substitution of hydrogen by deuterium induces a large rotation of the principal axis system that amplifies the errors.
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Affiliation(s)
- Natalja Vogt
- Section of Chemical Information Systems
- University of Ulm
- D-89069 Ulm
- Germany
- Department of Chemistry
| | - Jean Demaison
- Section of Chemical Information Systems
- University of Ulm
- D-89069 Ulm
- Germany
| | | | - Agnès Perrin
- Laboratoire Inter-Universitaire des Systèmes Atmosphériques (LISA)
- UMR 7583 CNRS et Universités Paris-Est Créteil et Paris Diderot-Paris 7
- Institut Pierre-Simon Laplace
- 94010 Créteil Cedex
- France
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25
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Yu CL, Wang F, Cao SY, Gao DP, Hui HB, Guo YY, Wang DY. The structure of H2TiO3—a short discussion on “Lithium recovery from salt lake brine by H2TiO3”. Dalton Trans 2015; 44:15721-4. [DOI: 10.1039/c4dt03689a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The phase of H2TiO3 prepared by treating Li2TiO3 with HCl is not monoclinic.
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Affiliation(s)
- Cheng-Long Yu
- School of Materials Science and Engineering
- Shaanxi University of Science & Technology
- Xi'an 710021
- China
| | - Fei Wang
- School of Materials Science and Engineering
- Shaanxi University of Science & Technology
- Xi'an 710021
- China
| | - Shu-Yao Cao
- School of Materials Science and Engineering
- Shaanxi University of Science & Technology
- Xi'an 710021
- China
| | - Dan-Peng Gao
- School of Materials Science and Engineering
- Shaanxi University of Science & Technology
- Xi'an 710021
- China
| | - Huai-Bing Hui
- School of Materials Science and Engineering
- Shaanxi University of Science & Technology
- Xi'an 710021
- China
- Technology Research Institute
| | - Ying-Yan Guo
- College of Resources and Environment
- Shaanxi University of Science & Technology
- Xi'an 710021
- China
| | - Dao-Yi Wang
- School of Materials Science and Engineering
- Shaanxi University of Science & Technology
- Xi'an 710021
- China
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26
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Vogt N, Demaison J, Vogt J, Rudolph HD. Why it is sometimes difficult to determine the accurate position of a hydrogen atom by the semiexperimental method: Structure of molecules containing the OH or the CH3group. J Comput Chem 2014; 35:2333-42. [DOI: 10.1002/jcc.23758] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 09/23/2014] [Accepted: 09/27/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Natalja Vogt
- Department of Theoretical Chemistry; Chemical Information Systems, University of Ulm; D-89069 Ulm Germany
- Department of Chemistry; Lomonosov Moscow State University; Moscow 119992 Russia
| | - Jean Demaison
- Department of Theoretical Chemistry; Chemical Information Systems, University of Ulm; D-89069 Ulm Germany
| | - Jürgen Vogt
- Department of Theoretical Chemistry; Chemical Information Systems, University of Ulm; D-89069 Ulm Germany
| | - Heinz Dieter Rudolph
- Department of Theoretical Chemistry; Chemical Information Systems, University of Ulm; D-89069 Ulm Germany
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27
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Nunes CM, Lapinski L, Fausto R, Reva I. Near-IR laser generation of a high-energy conformer of L-alanine and the mechanism of its decay in a low-temperature nitrogen matrix. J Chem Phys 2013; 138:125101. [DOI: 10.1063/1.4795823] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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28
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29
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Demaison J, Craig NC, Conrad AR, Tubergen MJ, Rudolph HD. Semiexperimental Equilibrium Structure of the Lower Energy Conformer of Glycidol by the Mixed Estimation Method. J Phys Chem A 2012; 116:9116-22. [PMID: 22894798 DOI: 10.1021/jp305504x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Jean Demaison
- Laboratoire de Physique des
Lasers, Atomes et Molécules, Université de Lille I, 59655 Villeneuve d’Ascq Cedex, France
| | - Norman C. Craig
- Department of Chemistry and
Biochemistry, Oberlin College, Oberlin,
Ohio 44074, United States
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30
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32
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33
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Jaeger HM, Schaefer HF, Demaison J, Császár AG, Allen WD. Lowest-Lying Conformers of Alanine: Pushing Theory to Ascertain Precise Energetics and Semiexperimental Re Structures. J Chem Theory Comput 2010; 6:3066-78. [DOI: 10.1021/ct1000236] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Heather M. Jaeger
- Center for Computational Chemistry and Department of Chemistry, University of Georgia, Athens, Georgia 30602, Laboratoire de Physique des Lasers, Atomes et Molécules, UMR CNRS 8523, Université de Lille I, 59655 Villeneuve d’Ascq Cedex, France, and Laboratory of Molecular Spectroscopy, Institute of Chemistry, Eötvös University, H-1518 Budapest 112, P.O. Box 32, Hungary
| | - Henry F. Schaefer
- Center for Computational Chemistry and Department of Chemistry, University of Georgia, Athens, Georgia 30602, Laboratoire de Physique des Lasers, Atomes et Molécules, UMR CNRS 8523, Université de Lille I, 59655 Villeneuve d’Ascq Cedex, France, and Laboratory of Molecular Spectroscopy, Institute of Chemistry, Eötvös University, H-1518 Budapest 112, P.O. Box 32, Hungary
| | - Jean Demaison
- Center for Computational Chemistry and Department of Chemistry, University of Georgia, Athens, Georgia 30602, Laboratoire de Physique des Lasers, Atomes et Molécules, UMR CNRS 8523, Université de Lille I, 59655 Villeneuve d’Ascq Cedex, France, and Laboratory of Molecular Spectroscopy, Institute of Chemistry, Eötvös University, H-1518 Budapest 112, P.O. Box 32, Hungary
| | - Attila G. Császár
- Center for Computational Chemistry and Department of Chemistry, University of Georgia, Athens, Georgia 30602, Laboratoire de Physique des Lasers, Atomes et Molécules, UMR CNRS 8523, Université de Lille I, 59655 Villeneuve d’Ascq Cedex, France, and Laboratory of Molecular Spectroscopy, Institute of Chemistry, Eötvös University, H-1518 Budapest 112, P.O. Box 32, Hungary
| | - Wesley D. Allen
- Center for Computational Chemistry and Department of Chemistry, University of Georgia, Athens, Georgia 30602, Laboratoire de Physique des Lasers, Atomes et Molécules, UMR CNRS 8523, Université de Lille I, 59655 Villeneuve d’Ascq Cedex, France, and Laboratory of Molecular Spectroscopy, Institute of Chemistry, Eötvös University, H-1518 Budapest 112, P.O. Box 32, Hungary
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Sironneau V, Orphal J, Demaison J, Chelin P. High-Resolution Infrared Spectroscopy of trans- and cis-H18ON18O: Equilibrium Structures of the Nitrous Acid Isomers. J Phys Chem A 2008; 112:10697-702. [DOI: 10.1021/jp806286p] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- V. Sironneau
- Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), CNRS UMR 7583, Universités Paris-7 et Paris-12 (Paris-Est), 91405 Créteil Cedex, France, and Laboratoire de Chimie Quantique et Photophysique, CP 160/09, Faculté des Sciences, Université Libre de Bruxelles (ULB), B-1050 Bruxelles, Belgium
| | - J. Orphal
- Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), CNRS UMR 7583, Universités Paris-7 et Paris-12 (Paris-Est), 91405 Créteil Cedex, France, and Laboratoire de Chimie Quantique et Photophysique, CP 160/09, Faculté des Sciences, Université Libre de Bruxelles (ULB), B-1050 Bruxelles, Belgium
| | - J. Demaison
- Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), CNRS UMR 7583, Universités Paris-7 et Paris-12 (Paris-Est), 91405 Créteil Cedex, France, and Laboratoire de Chimie Quantique et Photophysique, CP 160/09, Faculté des Sciences, Université Libre de Bruxelles (ULB), B-1050 Bruxelles, Belgium
| | - P. Chelin
- Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), CNRS UMR 7583, Universités Paris-7 et Paris-12 (Paris-Est), 91405 Créteil Cedex, France, and Laboratoire de Chimie Quantique et Photophysique, CP 160/09, Faculté des Sciences, Université Libre de Bruxelles (ULB), B-1050 Bruxelles, Belgium
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35
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Demaison J, Liévin J, Császár AG, Gutle C. Equilibrium Structure and Torsional Barrier of BH3NH3. J Phys Chem A 2008; 112:4477-82. [DOI: 10.1021/jp710630j] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jean Demaison
- Service de Chimie quantique et Photophysique, CP160/09, Université Libre de Bruxelles, ave. F.D. Roosevelt, 50, B-1050 Brussels, Belgium, Laboratory of Molecular Spectroscopy, Institute of Chemistry, Eötvös University, P.O. Box 32, H-1518 Budapest 112, Hungary, Laboratoire Interuniversitaire des Systèmes Atmosphériques, CNRS UMR 7583 et Universités Paris 7 et Paris 12, 61 av. du Général de Gaulle, 94010 Créteil, Cédex, France
| | - Jacques Liévin
- Service de Chimie quantique et Photophysique, CP160/09, Université Libre de Bruxelles, ave. F.D. Roosevelt, 50, B-1050 Brussels, Belgium, Laboratory of Molecular Spectroscopy, Institute of Chemistry, Eötvös University, P.O. Box 32, H-1518 Budapest 112, Hungary, Laboratoire Interuniversitaire des Systèmes Atmosphériques, CNRS UMR 7583 et Universités Paris 7 et Paris 12, 61 av. du Général de Gaulle, 94010 Créteil, Cédex, France
| | - Attila G. Császár
- Service de Chimie quantique et Photophysique, CP160/09, Université Libre de Bruxelles, ave. F.D. Roosevelt, 50, B-1050 Brussels, Belgium, Laboratory of Molecular Spectroscopy, Institute of Chemistry, Eötvös University, P.O. Box 32, H-1518 Budapest 112, Hungary, Laboratoire Interuniversitaire des Systèmes Atmosphériques, CNRS UMR 7583 et Universités Paris 7 et Paris 12, 61 av. du Général de Gaulle, 94010 Créteil, Cédex, France
| | - Claudine Gutle
- Service de Chimie quantique et Photophysique, CP160/09, Université Libre de Bruxelles, ave. F.D. Roosevelt, 50, B-1050 Brussels, Belgium, Laboratory of Molecular Spectroscopy, Institute of Chemistry, Eötvös University, P.O. Box 32, H-1518 Budapest 112, Hungary, Laboratoire Interuniversitaire des Systèmes Atmosphériques, CNRS UMR 7583 et Universités Paris 7 et Paris 12, 61 av. du Général de Gaulle, 94010 Créteil, Cédex, France
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