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Abstract
A modified neglect of differential overlap has been parameterized specifically for water and its oligomers with the addition of polarization functions on both hydrogen and oxygen, Feynman dispersion, and a slight modification of the treatment of the hydrogen nucleus. The results show that it is possible to easily obtain good geometries and energies for hydrogen-bonded water aggregates. Data from the Benchmark Energy and Geometry Database water-cluster database were used to parameterize the new Hamiltonian for water clusters from the dimer to the decamer using MP2/aug-cc-pVDZ optimized geometries and CCSD(T)/CBS oligomerization energies. Seventy five oligomerization and rearrangement energies derived from the parameterization data are reproduced with a root mean-square error (RMSE) of 0.79 kcal mol-1 and the geometries of 38 oligomers with an RMSE of 0.17 Å. Interestingly, the Feynman dispersion term adopts a role different from that intended and tunes the atomic polarizability. The implications of these results in terms of future dedicated neglect of diatomic differential overlap Hamiltonians and those that use force-field-like atom types are discussed.
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Affiliation(s)
- Matthias Hennemann
- Computer-Chemistry-Center, Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nuernberg, Naegelsbachstr. 25, 91052 Erlangen, Germany
| | - Timothy Clark
- Computer-Chemistry-Center, Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nuernberg, Naegelsbachstr. 25, 91052 Erlangen, Germany
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2
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Řezáč J. Description of halogen bonding in semiempirical quantum-mechanical and self-consistent charge density-functional tight-binding methods. J Comput Chem 2019; 40:1633-1642. [PMID: 30941801 DOI: 10.1002/jcc.25816] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 02/14/2019] [Accepted: 02/21/2019] [Indexed: 12/20/2022]
Abstract
This article analyzes the ability of semiempirical quantum-mechanical methods (PM6 and PM7) and self-consistent charge density-functional tight-binding (SCC-DFTB) method DFTB3 to describe halogen bonds. Calculations of the electrostatic potential on the surface of molecules containing halogens show that the σ-hole could be described well in modified neglect of diatomic overlap-based methods. The situation is more complex in the case of DFTB3 where a simpler model is used for the electrostatics, but short-ranged effects are covered in the Hamiltonian. All these methods can thus capture the effects that, for example, define the geometry of halogen bonds. The interaction energies are, however, affected by generally underestimated repulsion, which has been addressed earlier by standalone empirical corrections. Another approach to correcting this issue in DFTB3 is presented here-a modification of the energies of d-orbitals on halogens yields better results than the empirical correction in DFTB3-D3X, although it remains difficult to describe halogen and hydrogen bonds simultaneously. © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
- Jan Řezáč
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, 166 10, Prague, Czech Republic
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3
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Thomas HB, Hennemann M, Kibies P, Hoffgaard F, Güssregen S, Hessler G, Kast SM, Clark T. The hpCADD NDDO Hamiltonian: Parametrization. J Chem Inf Model 2017; 57:1907-1922. [DOI: 10.1021/acs.jcim.7b00080] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Heike B. Thomas
- Computer-Chemie-Centrum,
Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nägelsbachstr. 25, 91052 Erlangen, Germany
| | - Matthias Hennemann
- Computer-Chemie-Centrum,
Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nägelsbachstr. 25, 91052 Erlangen, Germany
| | - Patrick Kibies
- Physikalische
Chemie III, Technische Universität Dortmund, Otto-Hahn-Str.
4a, 44227 Dortmund, Germany
| | - Franziska Hoffgaard
- Physikalische
Chemie III, Technische Universität Dortmund, Otto-Hahn-Str.
4a, 44227 Dortmund, Germany
| | - Stefan Güssregen
- R&D, IDD, Structural Design and Informatics, Sanofi-Aventis Deutschland GmbH, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Gerhard Hessler
- R&D, IDD, Structural Design and Informatics, Sanofi-Aventis Deutschland GmbH, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Stefan M. Kast
- Physikalische
Chemie III, Technische Universität Dortmund, Otto-Hahn-Str.
4a, 44227 Dortmund, Germany
| | - Timothy Clark
- Computer-Chemie-Centrum,
Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nägelsbachstr. 25, 91052 Erlangen, Germany
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4
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Christensen A, Kubař T, Cui Q, Elstner M. Semiempirical Quantum Mechanical Methods for Noncovalent Interactions for Chemical and Biochemical Applications. Chem Rev 2016; 116:5301-37. [PMID: 27074247 PMCID: PMC4867870 DOI: 10.1021/acs.chemrev.5b00584] [Citation(s) in RCA: 246] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Indexed: 12/28/2022]
Abstract
Semiempirical (SE) methods can be derived from either Hartree-Fock or density functional theory by applying systematic approximations, leading to efficient computational schemes that are several orders of magnitude faster than ab initio calculations. Such numerical efficiency, in combination with modern computational facilities and linear scaling algorithms, allows application of SE methods to very large molecular systems with extensive conformational sampling. To reliably model the structure, dynamics, and reactivity of biological and other soft matter systems, however, good accuracy for the description of noncovalent interactions is required. In this review, we analyze popular SE approaches in terms of their ability to model noncovalent interactions, especially in the context of describing biomolecules, water solution, and organic materials. We discuss the most significant errors and proposed correction schemes, and we review their performance using standard test sets of molecular systems for quantum chemical methods and several recent applications. The general goal is to highlight both the value and limitations of SE methods and stimulate further developments that allow them to effectively complement ab initio methods in the analysis of complex molecular systems.
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Affiliation(s)
- Anders
S. Christensen
- Department
of Chemistry and Theoretical Chemistry Institute, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Tomáš Kubař
- Institute of Physical
Chemistry & Center for Functional Nanostructures and Institute of Physical
Chemistry, Karlsruhe Institute of Technology, Kaiserstrasse 12, 76131 Karlsruhe, Germany
| | - Qiang Cui
- Department
of Chemistry and Theoretical Chemistry Institute, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Marcus Elstner
- Institute of Physical
Chemistry & Center for Functional Nanostructures and Institute of Physical
Chemistry, Karlsruhe Institute of Technology, Kaiserstrasse 12, 76131 Karlsruhe, Germany
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5
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Christensen AS, Elstner M, Cui Q. Improving intermolecular interactions in DFTB3 using extended polarization from chemical-potential equalization. J Chem Phys 2015; 143:084123. [PMID: 26328834 PMCID: PMC4552706 DOI: 10.1063/1.4929335] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 08/10/2015] [Indexed: 11/14/2022] Open
Abstract
Semi-empirical quantum mechanical methods traditionally expand the electron density in a minimal, valence-only electron basis set. The minimal-basis approximation causes molecular polarization to be underestimated, and hence intermolecular interaction energies are also underestimated, especially for intermolecular interactions involving charged species. In this work, the third-order self-consistent charge density functional tight-binding method (DFTB3) is augmented with an auxiliary response density using the chemical-potential equalization (CPE) method and an empirical dispersion correction (D3). The parameters in the CPE and D3 models are fitted to high-level CCSD(T) reference interaction energies for a broad range of chemical species, as well as dipole moments calculated at the DFT level; the impact of including polarizabilities of molecules in the parameterization is also considered. Parameters for the elements H, C, N, O, and S are presented. The Root Mean Square Deviation (RMSD) interaction energy is improved from 6.07 kcal/mol to 1.49 kcal/mol for interactions with one charged species, whereas the RMSD is improved from 5.60 kcal/mol to 1.73 for a set of 9 salt bridges, compared to uncorrected DFTB3. For large water clusters and complexes that are dominated by dispersion interactions, the already satisfactory performance of the DFTB3-D3 model is retained; polarizabilities of neutral molecules are also notably improved. Overall, the CPE extension of DFTB3-D3 provides a more balanced description of different types of non-covalent interactions than Neglect of Diatomic Differential Overlap type of semi-empirical methods (e.g., PM6-D3H4) and PBE-D3 with modest basis sets.
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Affiliation(s)
- Anders S Christensen
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, USA
| | - Marcus Elstner
- Theoretische Chemische Biologie, Universität Karlsruhe, Kaiserstr. 12, 76131 Karlsruhe, Germany
| | - Qiang Cui
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, USA
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Han J, Mazack MJM, Zhang P, Truhlar DG, Gao J. Quantum mechanical force field for water with explicit electronic polarization. J Chem Phys 2013; 139:054503. [PMID: 23927266 PMCID: PMC3747793 DOI: 10.1063/1.4816280] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Accepted: 07/08/2013] [Indexed: 11/14/2022] Open
Abstract
A quantum mechanical force field (QMFF) for water is described. Unlike traditional approaches that use quantum mechanical results and experimental data to parameterize empirical potential energy functions, the present QMFF uses a quantum mechanical framework to represent intramolecular and intermolecular interactions in an entire condensed-phase system. In particular, the internal energy terms used in molecular mechanics are replaced by a quantum mechanical formalism that naturally includes electronic polarization due to intermolecular interactions and its effects on the force constants of the intramolecular force field. As a quantum mechanical force field, both intermolecular interactions and the Hamiltonian describing the individual molecular fragments can be parameterized to strive for accuracy and computational efficiency. In this work, we introduce a polarizable molecular orbital model Hamiltonian for water and for oxygen- and hydrogen-containing compounds, whereas the electrostatic potential responsible for intermolecular interactions in the liquid and in solution is modeled by a three-point charge representation that realistically reproduces the total molecular dipole moment and the local hybridization contributions. The present QMFF for water, which is called the XP3P (explicit polarization with three-point-charge potential) model, is suitable for modeling both gas-phase clusters and liquid water. The paper demonstrates the performance of the XP3P model for water and proton clusters and the properties of the pure liquid from about 900 × 10(6) self-consistent-field calculations on a periodic system consisting of 267 water molecules. The unusual dipole derivative behavior of water, which is incorrectly modeled in molecular mechanics, is naturally reproduced as a result of an electronic structural treatment of chemical bonding by XP3P. We anticipate that the XP3P model will be useful for studying proton transport in solution and solid phases as well as across biological ion channels through membranes.
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Affiliation(s)
- Jaebeom Han
- Department of Chemistry and Supercomputing Institute, University of Minnesota, 207 Pleasant Street, SE, Minneapolis, Minnesota 55455-0431, USA
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Řezáč J, Hobza P. Advanced Corrections of Hydrogen Bonding and Dispersion for Semiempirical Quantum Mechanical Methods. J Chem Theory Comput 2011; 8:141-51. [DOI: 10.1021/ct200751e] [Citation(s) in RCA: 357] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jan Řezáč
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic and Center for Biomolecules and Complex Molecular Systems, 166 10 Prague, Czech Republic
| | - Pavel Hobza
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic and Center for Biomolecules and Complex Molecular Systems, 166 10 Prague, Czech Republic
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Palacky University, 771 46 Olomouc, Czech Republic
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8
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Polarization-induced σ-holes and hydrogen bonding. J Mol Model 2011; 18:2461-9. [PMID: 22015592 DOI: 10.1007/s00894-011-1263-5] [Citation(s) in RCA: 109] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Accepted: 09/27/2011] [Indexed: 10/16/2022]
Abstract
The strong collinear polarizability of the A-H bond in A-H···B hydrogen bonds is shown to lead to an enhanced σ-hole on the donor hydrogen atom and hence to stronger hydrogen bonding. This effect helps to explain the directionality of hydrogen bonds, the well known cooperative effect in hydrogen bonding, and the occurrence of blue-shifting. The latter results when significant additional electron density is shifted into the A-H bonding region by the polarization effect. The shift in the A-H stretching frequency is shown to depend essentially linearly on the calculated atomic charge on the donor hydrogen for all donors in which A belongs to the same row of the periodic table. A further result of the polarization effect, which is also expected for other σ-hole bonds, is that the strength of the non-covalent interaction depends strongly on external electric fields.
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9
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Fiedler L, Gao J, Truhlar DG. Polarized Molecular Orbital Model Chemistry. I. Ab Initio Foundations. J Chem Theory Comput 2011; 7:852-856. [PMID: 23236264 DOI: 10.1021/ct1006373] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The objective of this paper is to examine the minimal requirements for obtaining semiquantitative polarizabilities of molecules, in order to provide a well-founded starting point for a new semiempirical molecular orbital formulation that is more suitable than presently available methods for simulating electronic polarization effects. For this purpose, we present polarizability calculations for 38 molecules with 36 basis sets, including many unconventional ones, and five semiempirical molecular orbital theories based on neglect of diatomic differential overlap. We conclude that two basis sets are particularly promising to serve as bases for semiempirical improvement, namely STO-3G(,P), in which diffuse p functions are added to all hydrogens, and 3-(21,3,21)G in which a minimal basis set is augmented with one extra s function on every atom. We especially recommend the former because all intra-atomic overlap integrals are zero by symmetry, which makes it a better candidate for neglect-of-differential-overlap treatments.
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Affiliation(s)
- Luke Fiedler
- Department of Chemistry and Supercomputing Institute, University of Minnesota, 207 Pleasant Street S.E., Minneapolis, MN 55455-0431
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10
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Murdachaew G, Mundy CJ, Schenter GK, Laino T, Hutter J. Semiempirical self-consistent polarization description of bulk water, the liquid-vapor interface, and cubic ice. J Phys Chem A 2011; 115:6046-53. [PMID: 21370904 DOI: 10.1021/jp110481m] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have applied an efficient electronic structure approach, the semiempirical self-consistent polarization neglect of diatomic differential overlap (SCP-NDDO) method, previously parametrized to reproduce properties of water clusters by Chang, Schenter, and Garrett [ J. Chem. Phys. 2008 , 128 , 164111 ] and now implemented in the CP2K package, to model ambient liquid water at 300 K (both the bulk and the liquid-vapor interface) and cubic ice at 15 and 250 K. The SCP-NDDO potential retains its transferability and good performance across the full range of conditions encountered in the clusters and the bulk phases of water. In particular, we obtain good results for the density, radial distribution functions, enthalpy of vaporization, self-diffusion coefficient, molecular dipole moment distribution, and hydrogen bond populations, in comparison to experimental measurements.
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Affiliation(s)
- Garold Murdachaew
- Chemical & Materials Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA.
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11
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Řezáč J, Fanfrlík J, Salahub D, Hobza P. Semiempirical Quantum Chemical PM6 Method Augmented by Dispersion and H-Bonding Correction Terms Reliably Describes Various Types of Noncovalent Complexes. J Chem Theory Comput 2009; 5:1749-60. [DOI: 10.1021/ct9000922] [Citation(s) in RCA: 271] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Jan Řezáč
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic and Center for Biomolecules and Complex Systems, 166 10 Prague 6, Czech Republic, Department of Chemistry, Institute for Biocomplexity and Informatics (IBI) and Institute for Sustainable Energy, Environment and Economy (ISEEE), University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4, and Department of Physical Chemistry, Palacky University, Olomouc, 771 46 Olomouc, Czech Republic
| | - Jindřich Fanfrlík
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic and Center for Biomolecules and Complex Systems, 166 10 Prague 6, Czech Republic, Department of Chemistry, Institute for Biocomplexity and Informatics (IBI) and Institute for Sustainable Energy, Environment and Economy (ISEEE), University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4, and Department of Physical Chemistry, Palacky University, Olomouc, 771 46 Olomouc, Czech Republic
| | - Dennis Salahub
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic and Center for Biomolecules and Complex Systems, 166 10 Prague 6, Czech Republic, Department of Chemistry, Institute for Biocomplexity and Informatics (IBI) and Institute for Sustainable Energy, Environment and Economy (ISEEE), University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4, and Department of Physical Chemistry, Palacky University, Olomouc, 771 46 Olomouc, Czech Republic
| | - Pavel Hobza
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic and Center for Biomolecules and Complex Systems, 166 10 Prague 6, Czech Republic, Department of Chemistry, Institute for Biocomplexity and Informatics (IBI) and Institute for Sustainable Energy, Environment and Economy (ISEEE), University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4, and Department of Physical Chemistry, Palacky University, Olomouc, 771 46 Olomouc, Czech Republic
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12
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Simpson DJ, Bredow T, Gerson AR. MSINDO study of acid promoted dissolution of planar MgO and NiO surfaces. J Comput Chem 2009; 30:581-8. [DOI: 10.1002/jcc.21082] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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13
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Computational investigation of water and oxygen adsorption on the anatase TiO2 (100) surface. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.theochem.2008.08.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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14
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Chang DT, Schenter GK, Garrett BC. Self-consistent polarization neglect of diatomic differential overlap: application to water clusters. J Chem Phys 2008; 128:164111. [PMID: 18447425 DOI: 10.1063/1.2905230] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Semiempirical self-consistent field (SCF) methods based on the neglect of diatomic differential overlap (NDDO) formalism have the ability to treat the formation and breaking of chemical bonds but have been found to poorly describe hydrogen bonding and weak electrostatic complexes. In contrast, most empirical potentials are not able to describe bond breaking and formation but have the ability to add missing elements of hydrogen bonding by using classical electrostatic interactions. We present a new method which combines aspects of both NDDO-based SCF techniques and classical descriptions of polarization to describe the diffuse nature of the electronic wavefunction in a self-consistent manner. We develop the "self-consistent polarization neglect of diatomic differential overlap" (SCP-NDDO) theory with the additional description of molecular dispersion developed as a second-order perturbation theory expression. The current study seeks to model water-water interactions as a test case. To this end, we have parametrized the method to accurate ab initio complete basis set limit estimates of small water cluster binding energies of Xantheas and co-workers [J. Chem. Phys. 116, 1493 (2002); 120, 823 (2004)]. Overall agreement with the ab initio binding energies (n=2-6, and 8) is achieved with a rms error of 0.19 kcal/mol. We achieve noticeable improvements in the structure, vibrational frequencies, and energetic predictions of water clusters (n< or =21) relative to standard NDDO-based methods.
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Affiliation(s)
- Daniel T Chang
- Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
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15
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Yang Y, Yu H, York D, Cui Q, Elstner M. Extension of the Self-Consistent-Charge Density-Functional Tight-Binding Method: Third-Order Expansion of the Density Functional Theory Total Energy and Introduction of a Modified Effective Coulomb Interaction. J Phys Chem A 2007; 111:10861-73. [PMID: 17914769 DOI: 10.1021/jp074167r] [Citation(s) in RCA: 213] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The standard self-consistent-charge density-functional-tight-binding (SCC-DFTB) method (Phys. Rev. B 1998, 58, 7260) is derived by a second-order expansion of the density functional theory total energy expression, followed by an approximation of the charge density fluctuations by charge monopoles and an effective damped Coulomb interaction between the atomic net charges. The central assumptions behind this effective charge-charge interaction are the inverse relation of atomic size and chemical hardness and the use of a fixed chemical hardness parameter independent of the atomic charge state. While these approximations seem to be unproblematic for many covalently bound systems, they are quantitatively insufficient for hydrogen-bonding interactions and (anionic) molecules with localized net charges. Here, we present an extension of the SCC-DFTB method to incorporate third-order terms in the charge density fluctuations, leading to chemical hardness parameters that are dependent on the atomic charge state and a modification of the Coulomb scaling to improve the electrostatic treatment within the second-order terms. These modifications lead to a significant improvement in the description of hydrogen-bonding interactions and proton affinities of biologically relevant molecules.
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Affiliation(s)
- Yang Yang
- Department of Chemistry and Theoretical Chemistry Institute, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, USA
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16
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17
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18
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Tikhomirov VA, Jug K. MSINDO Study of Water Adsorption on the Clean MgO(100) Surface. J Phys Chem B 2000. [DOI: 10.1021/jp9938260] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Karl Jug
- Theoretische Chemie, Universität Hannover, Am Kleinen Felde 30, 30167 Hannover, Germany
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19
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Tikhomirov VA, Geudtner G, Jug K. SINDO1 Study of Water Dissociation at the Clean and Stepped MgO(100) Surface. J Phys Chem B 1997. [DOI: 10.1021/jp972038c] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Gerald Geudtner
- Theoretische Chemie, Universität Hannover, Am Kleinen Felde 30, 30167 Hannover, Germany
| | - Karl Jug
- Theoretische Chemie, Universität Hannover, Am Kleinen Felde 30, 30167 Hannover, Germany
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20
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Jug K, Geudtner G. Comparative studies on the adsorption of small molecules at NaCl and MgO surfaces. ACTA ACUST UNITED AC 1997. [DOI: 10.1016/s1381-1169(96)00478-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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22
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Rusinska-Roszak D, Lozynski M, Mack HG, Korn M. Semiempirical treatment of hydrogen bonding. The acetoin oxime case. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/0166-1280(95)90079-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Jeanvoine Y, Bohr F, Ruiz-López M. Density Functional calculations for some hydrogen-bonded systems. Influence of a dielectric surrounding. CAN J CHEM 1995. [DOI: 10.1139/v95-090] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We present Density Functional calculations for hydrogen-bonded systems with small, medium, and large association energies, in a vacuum and in a dielectric environment. The results are in reasonably good agreement with accurate ab initio results and available experimental data. They confirm that DFT is very promising for modeling liquid state properties. Keywords: hydrogen bond, Density Functional, cooperative effect, liquid state.
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24
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Hydrogen-bonded and van der Waals complexes studied by a Gaussian density functional method. The case of (HF)2, ArHCl and Ar2HCl systems. ACTA ACUST UNITED AC 1995. [DOI: 10.1007/bf01114984] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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25
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Jug K, Albert K, Gerwens H. An electrostatic model for physisorption at ionic solids: Application to CO adsorption on NaCl(100). J Chem Phys 1994. [DOI: 10.1063/1.467857] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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