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Yeole SD. Quantum chemical study of molecular hydration of phenylxylopyranose sugar. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02100-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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2
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Derbali I, Aroule O, Hoffmann G, Thissen R, Alcaraz C, Romanzin C, Zins EL. On the relevance of the electron density analysis for the study of micro-hydration and its impact on the formation of a peptide-like bond. Theor Chem Acc 2022. [DOI: 10.1007/s00214-022-02893-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Koli AR, Yeole SD. Understanding the interactions between hydrogen-bonded complexes of xylose and water: Quantum Chemical Investigation. J CHEM SCI 2020. [DOI: 10.1007/s12039-020-1741-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Koli AR, Yeole SD. Molecular hydration of carbohydrates: quantum chemical study of xylofuranose–(H2O)n clusters. Theor Chem Acc 2020. [DOI: 10.1007/s00214-020-02634-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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6
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Zins EL. Microhydration of a Carbonyl Group: How does the Molecular Electrostatic Potential (MESP) Impact the Formation of (H 2O) n:(R 2C═O)Complexes? J Phys Chem A 2020; 124:1720-1734. [PMID: 32049521 DOI: 10.1021/acs.jpca.9b09992] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The presence of a carbonyl group in a molecule usually leads to the identification of a π-hole on the molecular electrostatic potential (MESP) of the species. How does this electrophilic site influence the formation of microhydrated complexes? To address this point, a panel of R2CO solutes with various MESPs was selected, and we identified the structures and properties of several complexes containing one, two, three and six water molecules. The following solutes were considered in the present study: H2CO, F2CO, Cl2CO,(NC)2CO and H2C═CO. Geometry optimizations and frequency calculations were carried out at the LC-ωPBE/6-311++G(d,p) level, with the GD3BJ empirical correction for dispersion. For a number of n water molecules around the R2CO solute, the structure and the features of the most stable (H2O)n:(R2CO) complexes are highly dependent on the MESP of the isolated R2CO solute. The formation of pi-hole bondings appears to play a decisive role in the initiation of a three-dimensional organization of water molecules around the solute.
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Affiliation(s)
- Emilie-Laure Zins
- De la Molécule aux Nano-Objets: Réactivité, Interactions Spectroscopies, MONARIS, CNRS, Sorbonne Université, 75005, Paris, France
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Kulkarni AD. Molecular Hydration of Carbonic Acid: Ab Initio Quantum Chemical and Density Functional Theory Investigation. J Phys Chem A 2019; 123:5504-5516. [PMID: 31244117 DOI: 10.1021/acs.jpca.9b01122] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Molecular hydration of carbonic acid (H2CO3) is investigated in terms of bonding patterns in H2CO3···(H2O) n [ n = 1-4] hydrogen-bonded clusters within ab initio quantum chemical and density functional theory (DFT) frameworks. Successive addition of water molecules to H2CO3···H2O entails elongation of O-H (hydroxyl) bond as well as contraction of specific intermolecular hydrogen bonds signifying hydration of carbonic acid; these structural features get markedly enhanced under the continuum solvation framework. A comparison between the structurally similar clusters H2CO3···(H2O) n and HCOOH···(H2O) n [ n = 1-3] brings out the structural stability of the former. The present investigation in conjunction with the binding energy behavior of approaching water molecule(s) should serve as a precursor for pathways exploring aqueous dissociation of H2CO3 for larger clusters, as well as development of force-field potentials for acid dissociation process.
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Affiliation(s)
- Anant D Kulkarni
- Solid State and Structural Chemistry Unit , Indian Institute of Science , Bangalore 560012 , India
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Kalai C, Alikhani ME, Zins EL. The molecular electrostatic potential analysis of solutes and water clusters: a straightforward tool to predict the geometry of the most stable micro-hydrated complexes of β-propiolactone and formamide. Theor Chem Acc 2018. [DOI: 10.1007/s00214-018-2345-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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9
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Richards LA, Nash A, Willetts A, Entwistle C, de Leeuw NH. Modelling water diffusion in plasticizers: development and optimization of a force field for 2,4-dinitroethylbenzene and 2,4,6-trinitroethylbenzene. RSC Adv 2018; 8:5728-5739. [PMID: 35557986 PMCID: PMC9092615 DOI: 10.1039/c7ra12254c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 01/19/2018] [Indexed: 11/21/2022] Open
Abstract
A classical all-atom force field has been developed for 2,4,6-trinitroethylbenzene and 2,4-dinitroethylbenzene and applied in molecular dynamics simulations of the two pure and two mixed plasticizer systems. Bonding parameters and partial charges were derived through electronic and geometry optimization of the single molecules. The other required parameters were derived from values already available in the literature for generic nitro aromatic compounds, which were adjusted to reproduce to a high level of accuracy the densities of 2,4-dinitroethylbenzene, 2,4,6-trinitroethylbenzene and the energetic plasticizers K10 and R8002. This force field has been applied to both K10 and R8002, which when used as plasticizers form an energetic binder with nitrocellulose. Nitrocellulose decomposes in storage, under varying conditions, but in particular where it may become increasingly dry. Following the derivation of the force field, we have therefore applied it to calculate water diffusion coefficients for each of the different materials at 298 K and 338 K, thereby providing a starting point for understanding water behaviour in a nitrocellulose binder. A classical all-atom force field has been developed for the plasticizer molecules 2,4,6-trinitroethylbenzene and 2,4-dinitroethylbenzene which can be used to investigate properties and energetic output of nitrocellulose-based propellants and binders.![]()
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Affiliation(s)
- Lisa A. Richards
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
| | - Anthony Nash
- Department of Physiology Anatomy and Genetics, University of Oxford, South Parks Road, Oxford, OX1 3QX, UK
| | - Andrew Willetts
- Atomic Weapons Establishment, Aldermaston, Reading, Berkshire, RG7 4PR, UK
| | - Chris Entwistle
- Atomic Weapons Establishment, Aldermaston, Reading, Berkshire, RG7 4PR, UK
| | - Nora H. de Leeuw
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
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10
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Grabowski SJ. Two faces of triel bonds in boron trihalide complexes. J Comput Chem 2017; 39:472-480. [PMID: 28857264 DOI: 10.1002/jcc.25056] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Revised: 08/02/2017] [Accepted: 08/13/2017] [Indexed: 01/15/2023]
Abstract
The N⋅⋅⋅B triel bonds in complexes of boron trihalides, BX3 (X = F, Cl, Br, and I), with species acting as Lewis bases through the nitrogen center, NH3 , N2 , and HCN, are analyzed theoretically (MP2/aug-cc-pVTZ calculations). It is confirmed that stronger Lewis acid properties of the boron center are observed for the BCl3 moiety than for the BF3 one in complexes with the strong Lewis base (NH3 ); while the opposite order is observed for complexes with the weak Lewis base (N2 ). The BX3 NCH complexes (for X = Cl, Br, and I) are characterized by two tautomeric forms and by two corresponding N⋅⋅⋅B distances, the shorter one possesses characteristics of the covalent bond. In a case of the BF3 NCH complex one energetic minimum is observed. Ab initio calculations are supported by an analysis of molecular electrostatic potentials (EPs) and electron density distributions. The quantum theory of 'atoms in molecules' and the decomposition of the energy of interaction are applied. The aforementioned acidity orders as well as the existence of two tautomers for some of complexes result partly from the electrostatic interactions' balance; the EP distribution is different for the BF3 species than for the other BX3 species where X = Cl, Br, and I. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Sławomir J Grabowski
- Faculty of Chemistry, Polymer Science and Technology Department, University of the Basque Country and Donostia, International Physics Center (DIPC), P.K. 1072, Donostia, 20080, Spain.,IKERBASQUE, Basque Foundation for Science, Bilbao, 48011, Spain
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11
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Gayathri R, Arivazhagan M. Understanding field variation, quantum chemical modeling and molecular orbital analyses of trans-3-(trans-4-imidazolyl) acrylic acid. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.10.085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Zhang J, Guo L. Theoretical investigations of structures and properties of Au and S substituted poly (2,3-di-(4′-hydroxyphenyl)-1,4-phenylene ethynyl) at different electric field intensities. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2014. [DOI: 10.1142/s0219633614500254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Theoretical investigations on Au and S substituted poly (2,3-di-(4′-hydroxyphenyl)-1,4-phenylene ethynyl) as a molecular wire have been carried out by incorporating the external electric field (EF). The results demonstrate that both geometric and electronic structures of conjugated molecular wire are sensitive to EF. The Z component of the dipole moment and total dipole moment increases continuously since EF polarizes the molecule. Static EF modifies the frontline molecular orbitals and HLG. The I-V curve indicates the symmetrical trend respect to the original point.
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Affiliation(s)
- Jian Zhang
- School of Chemistry and Material Science, Shanxi Normal University, Linfen 041004, P. R. China
| | - Li Guo
- School of Chemistry and Material Science, Shanxi Normal University, Linfen 041004, P. R. China
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13
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Simon A, Spiegelman F. Conformational dynamics and finite-temperature infrared spectra of the water octamer adsorbed on coronene. COMPUT THEOR CHEM 2013. [DOI: 10.1016/j.comptc.2013.06.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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14
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Impacts of medium, substituents, and specific interactions with water on hydration of carbonyl compounds. Struct Chem 2013. [DOI: 10.1007/s11224-013-0308-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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15
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Selvaraju K, Jothi M, Kumaradhas P. Exploring the charge density distribution and the electrical characteristics of Oligo phenylene ethylene molecular nanowire using quantum chemical and charge density analysis. COMPUT THEOR CHEM 2012. [DOI: 10.1016/j.comptc.2012.06.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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16
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Selvaraju K, Jothi M, Kumaradhas P. Understanding the charge density distribution and the electrostatic properties of hexadecane molecular nanowire under electric field using DFT and AIM theory. COMPUT THEOR CHEM 2012. [DOI: 10.1016/j.comptc.2012.04.019] [Citation(s) in RCA: 3] [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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17
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Vallejos MM, Peruchena NM. Preferential Formation of the Different Hydrogen Bonds and Their Effects in Tetrahydrofuran and Tetrahydropyran Microhydrated Complexes. J Phys Chem A 2012; 116:4199-210. [DOI: 10.1021/jp301498n] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Margarita M. Vallejos
- Laboratorio de Estructura
Molecular y Propiedades,
Área de Química Física, Departamento de Química,
Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Avda. Libertad 5460,
(3400) Corrientes, Argentina
| | - Nélida M. Peruchena
- Laboratorio de Estructura
Molecular y Propiedades,
Área de Química Física, Departamento de Química,
Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Avda. Libertad 5460,
(3400) Corrientes, Argentina
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18
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Bachrach SM, Dzierlenga MW. Microsolvation of Uracil and Its Conjugate Bases: A DFT Study of the Role of Solvation on Acidity. J Phys Chem A 2011; 115:5674-83. [DOI: 10.1021/jp202548h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Steven M. Bachrach
- Department of Chemistry, Trinity University, 1 Trinity Place, San Antonio, Texas 78212, United States
| | - Michael W. Dzierlenga
- Department of Chemistry, Trinity University, 1 Trinity Place, San Antonio, Texas 78212, United States
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19
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Mahadevi AS, Neela YI, Sastry GN. A theoretical study on structural, spectroscopic and energetic properties of acetamide clusters [CH3CONH2] (n = 1–15). Phys Chem Chem Phys 2011; 13:15211-20. [DOI: 10.1039/c1cp21346f] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Zheng Y, Zhang J. Catalysis in the Oil Droplet/Water Interface for Aromatic Claisen Rearrangement. J Phys Chem A 2010; 114:4325-33. [DOI: 10.1021/jp908018u] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yiying Zheng
- Faculty of Chemistry, Northeast Normal University, Changchun 130024, China., State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, china
| | - Jingping Zhang
- Faculty of Chemistry, Northeast Normal University, Changchun 130024, China., State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, china
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21
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22
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Kulkarni AD, Rai D, Bartolotti LJ, Pathak RK. Microsolvation of methyl hydrogen peroxide: Ab initio quantum chemical approach. J Chem Phys 2009; 131:054310. [DOI: 10.1063/1.3179753] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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23
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Kulkarni AD, Mennucci B, Tomasi J. Response of Scalar Fields and Hydrogen Bonding to Excited-State Molecular Solvation of Carbonyl Compounds. J Chem Theory Comput 2008; 4:578-85. [DOI: 10.1021/ct7002429] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anant D. Kulkarni
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, 56126 Pisa, Italy
| | - Benedetta Mennucci
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, 56126 Pisa, Italy
| | - Jacopo Tomasi
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, 56126 Pisa, Italy
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24
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Panuszko A, Gojło E, Zielkiewicz J, Śmiechowski M, Krakowiak J, Stangret J. Hydration of Simple Amides. FTIR Spectra of HDO and Theoretical Studies. J Phys Chem B 2008; 112:2483-93. [PMID: 18247601 DOI: 10.1021/jp7099509] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Aneta Panuszko
- Department of Physical Chemistry, Chemical Faculty, Gdańsk University of Technology, Narutowicza 11/12, 80-952 Gdańsk, Poland
| | - Emilia Gojło
- Department of Physical Chemistry, Chemical Faculty, Gdańsk University of Technology, Narutowicza 11/12, 80-952 Gdańsk, Poland
| | - Jan Zielkiewicz
- Department of Physical Chemistry, Chemical Faculty, Gdańsk University of Technology, Narutowicza 11/12, 80-952 Gdańsk, Poland
| | - Maciej Śmiechowski
- Department of Physical Chemistry, Chemical Faculty, Gdańsk University of Technology, Narutowicza 11/12, 80-952 Gdańsk, Poland
| | - Joanna Krakowiak
- Department of Physical Chemistry, Chemical Faculty, Gdańsk University of Technology, Narutowicza 11/12, 80-952 Gdańsk, Poland
| | - Janusz Stangret
- Department of Physical Chemistry, Chemical Faculty, Gdańsk University of Technology, Narutowicza 11/12, 80-952 Gdańsk, Poland
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26
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Parreira RL, Valdés H, Galembeck SE. Computational study of formamide–water complexes using the SAPT and AIM methods. Chem Phys 2006. [DOI: 10.1016/j.chemphys.2006.09.041] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Hu X, Li H, Liang W, Han S. Explore water’s protective and assistant role for uracil: A changing role of water at different temperature. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2005.10.042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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28
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Hu X, Li H, Liang W, Han S. Systematic Study of the Tautomerism of Uracil Induced by Proton Transfer. Exploration of Water Stabilization and Mutagenicity. J Phys Chem B 2005; 109:5935-44. [PMID: 16851647 DOI: 10.1021/jp044665p] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To systematically investigate all the possible tautomerisms from uracil (U) and its enol form (U) induced by proton transfer, we describe a study of structural tautomer interconversion in the gas phase, in a continuum solvent, and in a microhydrated environment with 1 or 2 explicit water molecules, using density functional theory (DFT) calculations by means of the B3LYP exchange and correlation functions. A total of 62 geometries including 25 transition states were optimized, and the geometrical parameters have been discussed. Some rules of the configuration variation in tautomerization were summarized. The relative stabilities of all the tautomers were established. When a proton transfers from the di-keto form to the keto-enol form, water molecules in different regions show absolutely opposite effects: some assist, whereas others hinder the tautomerization. However, when a proton transfers from the keto-enol form to the di-enol form, water molecules in different regions show similar effects: the Gibbs free energy always increases and the activation energy always decreases. Additionally, some important factors that obviously affect the activation energy and Gibbs free energy were found and discussed in detail. The reasons that water molecules can assist or prevent the proton transfer were given. Furthermore, on the basis of our calculated results, we explain why it is hard to detect the di-enol form of uracil in general experiments.
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Affiliation(s)
- Xingbang Hu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
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Parthasarathi R, Subramanian V, Sathyamurthy N. Hydrogen Bonding in Phenol, Water, and Phenol−Water Clusters. J Phys Chem A 2005; 109:843-50. [PMID: 16838955 DOI: 10.1021/jp046499r] [Citation(s) in RCA: 137] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Structure, stability, and hydrogen-bonding interaction in phenol, water, and phenol-water clusters have been investigated using ab initio and density functional theoretical (DFT) methods and using various topological features of electron density. Calculated interaction energies at MP2/6-31G level for clusters with similar hydrogen-bonding pattern reveal that intermolecular interaction in phenol clusters is slightly stronger than in water clusters. However, fusion of phenol and water clusters leads to stability that is akin to that of H(2)O clusters. The presence of hydrogen bond critical points (HBCP) and the values of rho(r(c)) and nabla(2)rho(r(c)) at the HBCPs provide an insight into the nature of closed shell interaction in hydrogen-bonded clusters. It is shown that the calculated values of total rho(r(c)) and nabla(2)rho(r(c)) of all the clusters vary linearly with the interaction energy.
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Affiliation(s)
- R Parthasarathi
- Chemical Laboratory, Central Leather Research Institute, Adyar, Chennai, India
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31
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Hu X, Li H, Liang W, Han S. Exploring a new kind of aromatic hydrogen bond: hydrogen bonding to all-metal aromatic species. NEW J CHEM 2005. [DOI: 10.1039/b507592k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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32
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Liang W, Li H, Hu X, Han S. Proton Transfer of Formamide + nH2O (n = 0−3): Protective and Assistant Effect of the Water Molecule. J Phys Chem A 2004. [DOI: 10.1021/jp047248l] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wanchun Liang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Haoran Li
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Xingbang Hu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Shijun Han
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
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Kulkarni AD, Ganesh V, Gadre SR. Many-body interaction analysis: Algorithm development and application to large molecular clusters. J Chem Phys 2004; 121:5043-50. [PMID: 15352794 DOI: 10.1063/1.1780156] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
A completely automated algorithm for performing many-body interaction energy analysis of clusters (MBAC) [M. J. Elrodt and R. J. Saykally, Chem. Rev. 94, 1975 (1994); S. S. Xantheas, J. Chem. Phys. 104, 8821 (1996)] at restricted Hartree-Fock (RHF)/MA Plesset 2nd order perturbation theory (MP2)/density functional theory (DFT) level of theory is reported. Use of superior guess density matrices (DM's) for smaller fragments generated from DM of the parent system and elimination of energetically insignificant higher-body combinations, leads to a more efficient performance (speed-up up to 2) compared to the conventional procedure. MBAC approach has been tested out on several large-sized weakly bound molecular clusters such as (H(2)O)(n), n=8, 12, 16, 20 and hydrated clusters of amides and aldehydes. The MBAC results indicate that the amides interact more strongly with water than aldehydes in these clusters. It also reconfirms minimization of the basis set superposition error for large cluster on using superior quality basis set. In case of larger weakly bound clusters, the contributions higher than four body are found to be repulsive in nature and smaller in magnitude. The reason for this may be attributed to the increased random orientations of the interacting molecules separated from each other by large distances.
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Affiliation(s)
- Anant D Kulkarni
- Department of Chemistry, University of Pune, Pune 411 007, India
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34
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Hu X, Li H, Liang W, Han S. Theoretical Study of the Proton Transfer of Uracil and (Water)n(n= 0−4): Water Stabilization and Mutagenicity for Uracil. J Phys Chem B 2004. [DOI: 10.1021/jp048146y] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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