251
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Mao Y, Horn PR, Mardirossian N, Head-Gordon T, Skylaris CK, Head-Gordon M. Approaching the basis set limit for DFT calculations using an environment-adapted minimal basis with perturbation theory: Formulation, proof of concept, and a pilot implementation. J Chem Phys 2016; 145:044109. [DOI: 10.1063/1.4959125] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Yuezhi Mao
- Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Paul R. Horn
- Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Narbe Mardirossian
- Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Teresa Head-Gordon
- Department of Chemistry, University of California, Berkeley, California 94720, USA
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, USA
- Department of Bioengineering, University of California, Berkeley, California 94720, USA
- Chemical Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Chris-Kriton Skylaris
- School of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom
| | - Martin Head-Gordon
- Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California, Berkeley, California 94720, USA
- Chemical Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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252
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Seino J, Nakai H. Informatics‐Based Energy Fitting Scheme for Correlation Energy at Complete Basis Set Limit. J Comput Chem 2016; 37:2304-15. [DOI: 10.1002/jcc.24455] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 05/27/2016] [Accepted: 07/02/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Junji Seino
- Research Institute for Science and Engineering, Waseda University3‐4‐1 OkuboShinjuku‐Ku Tokyo169‐8555 Japan
| | - Hiromi Nakai
- Research Institute for Science and Engineering, Waseda University3‐4‐1 OkuboShinjuku‐Ku Tokyo169‐8555 Japan
- Department of Chemistry and Biochemistry, School of Advanced Science and EngineeringWaseda University3‐4‐1 OkuboShinjuku‐Ku Tokyo169‐8555 Japan
- CREST, Japan Science and Technology Agency7 GobanchoChiyoda‐Ku Tokyo102‐0076 Japan
- Kyotodaigaku‐KatsuraESICB, Kyoto UniversityNishigyoku Kyoto615‐8520 Japan
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253
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Jin Y, Bartlett RJ. The QTP family of consistent functionals and potentials in Kohn-Sham density functional theory. J Chem Phys 2016; 145:034107. [DOI: 10.1063/1.4955497] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Yifan Jin
- Quantum Theory Project and Departments of Chemistry and Physics, University of Florida, Gainesville, Florida 32611, USA
| | - Rodney J. Bartlett
- Quantum Theory Project and Departments of Chemistry and Physics, University of Florida, Gainesville, Florida 32611, USA
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254
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Su NQ, Xu X. The XYG3 type of doubly hybrid density functionals. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2016. [DOI: 10.1002/wcms.1274] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Neil Qiang Su
- Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, MOE Key Laboratory of Computational Physical Sciences, Department of Chemistry; Fudan University; Shanghai 200433 China
| | - Xin Xu
- Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, MOE Key Laboratory of Computational Physical Sciences, Department of Chemistry; Fudan University; Shanghai 200433 China
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255
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D’hooge DR, Van Steenberge PH, Reyniers MF, Marin GB. The strength of multi-scale modeling to unveil the complexity of radical polymerization. Prog Polym Sci 2016. [DOI: 10.1016/j.progpolymsci.2016.04.002] [Citation(s) in RCA: 149] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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256
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Díaz-Tinoco M, Dolgounitcheva O, Zakrzewski VG, Ortiz JV. Composite electron propagator methods for calculating ionization energies. J Chem Phys 2016; 144:224110. [DOI: 10.1063/1.4953666] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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257
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Mardirossian N, Head-Gordon M. ωB97M-V: A combinatorially optimized, range-separated hybrid, meta-GGA density functional with VV10 nonlocal correlation. J Chem Phys 2016; 144:214110. [DOI: 10.1063/1.4952647] [Citation(s) in RCA: 370] [Impact Index Per Article: 46.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Affiliation(s)
- Narbe Mardirossian
- Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Martin Head-Gordon
- Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California, Berkeley, California 94720, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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258
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Simm GN, Reiher M. Systematic Error Estimation for Chemical Reaction Energies. J Chem Theory Comput 2016; 12:2762-73. [PMID: 27159007 DOI: 10.1021/acs.jctc.6b00318] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
For a theoretical understanding of the reactivity of complex chemical systems, accurate relative energies between intermediates and transition states are required. Despite its popularity, density functional theory (DFT) often fails to provide sufficiently accurate data, especially for molecules containing transition metals. Due to the huge number of intermediates that need to be studied for all but the simplest chemical processes, DFT is, to date, the only method that is computationally feasible. Here, we present a Bayesian framework for DFT that allows for error estimation of calculated properties. Since the optimal choice of parameters in present-day density functionals is strongly system dependent, we advocate for a system-focused reparameterization. While, at first sight, this approach conflicts with the first-principles character of DFT that should make it, in principle, system independent, we deliberately introduce system dependence to be able to assign a stochastically meaningful error to the system-dependent parametrization, which makes it nonarbitrary. By reparameterizing a functional that was derived on a sound physical basis to a chemical system of interest, we obtain a functional that yields reliable confidence intervals for reaction energies. We demonstrate our approach on the example of catalytic nitrogen fixation.
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Affiliation(s)
- Gregor N Simm
- Laboratory of Physical Chemistry, ETH Zürich , Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
| | - Markus Reiher
- Laboratory of Physical Chemistry, ETH Zürich , Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
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259
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Khursan SL. Homodesmotic method of determining the O–H bond dissociation energies in phenols. KINETICS AND CATALYSIS 2016. [DOI: 10.1134/s0023158416010067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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260
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Adamson A, Kaljurand I, Guillemin JC, Burk P. Relative stability and proton transfer reactions of unsaturated isocyanides and cyanides. J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3562] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Aiko Adamson
- Institute of Chemistry; University of Tartu; 14a Ravila St. 50411 Estonia
| | - Ivari Kaljurand
- Institute of Chemistry; University of Tartu; 14a Ravila St. 50411 Estonia
| | - Jean-Claude Guillemin
- Institut des Sciences Chimiques de Rennes; Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226; 11 Allée de Beaulieu CS 50837, 35708 Rennes Cedex 7 France
| | - Peeter Burk
- Institute of Chemistry; University of Tartu; 14a Ravila St. 50411 Estonia
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261
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Carmona-Espíndola J, Gázquez JL, Vela A, Trickey SB. Global hybrid exchange energy functional with correct asymptotic behavior of the corresponding potential. Theor Chem Acc 2016. [DOI: 10.1007/s00214-016-1864-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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262
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Burgess DR. An Evaluation of Gas Phase Enthalpies of Formation for Hydrogen-Oxygen (H xO y) Species. JOURNAL OF RESEARCH OF THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY 2016; 121:108-138. [PMID: 34434616 PMCID: PMC7339710 DOI: 10.6028/jres.121.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/11/2016] [Indexed: 06/13/2023]
Abstract
We have compiled gas phase enthalpies of formation for nine hydrogen-oxygen species (HxOy) and selected recommended values for H, O, OH, H2O, HO2, H2O2, O3, HO3, and H2O3. The compilation consists of values derived from experimental measurements, quantum chemical calculations, and prior evaluations. This work updates the recommended values in the NIST-JANAF (1985) and Gurvich et al. (1989) thermochemical tables for seven species. For two species, HO3 and H2O3 (important in atmospheric chemistry) and not found in prior thermochemical evaluations, we also provide supplementary data consisting of molecular geometries, vibrational frequencies, and torsional potentials which can be used to compute thermochemical functions. For all species, we also provide supplementary data consisting of zero point energies, vibrational frequencies, and ion reaction energetics.
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Affiliation(s)
- Donald R Burgess
- National Institute of Standards and Technology, Gaithersburg, MD 20899
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263
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Brémond É, Savarese M, Sancho-García JC, Pérez-Jiménez ÁJ, Adamo C. Quadratic integrand double-hybrid made spin-component-scaled. J Chem Phys 2016; 144:124104. [DOI: 10.1063/1.4944465] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Éric Brémond
- CompuNet, Istituto Italiano di Tecnologia, via Morego 30, I-16163 Genoa, Italy
| | - Marika Savarese
- CompuNet, Istituto Italiano di Tecnologia, via Morego 30, I-16163 Genoa, Italy
| | | | | | - Carlo Adamo
- CompuNet, Istituto Italiano di Tecnologia, via Morego 30, I-16163 Genoa, Italy
- Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris IRCP, F-75005 Paris, France
- Institut Universitaire de France, 103 Boulevard Saint Michel, F-75005 Paris, France
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264
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Theis D, Ivanic J, Windus TL, Ruedenberg K. The transition from the open minimum to the ring minimum on the ground state and on the lowest excited state of like symmetry in ozone: A configuration interaction study. J Chem Phys 2016; 144:104304. [PMID: 26979690 PMCID: PMC4788607 DOI: 10.1063/1.4942019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 01/26/2016] [Indexed: 11/14/2022] Open
Abstract
The metastable ring structure of the ozone 1(1)A1 ground state, which theoretical calculations have shown to exist, has so far eluded experimental detection. An accurate prediction for the energy difference between this isomer and the lower open structure is therefore of interest, as is a prediction for the isomerization barrier between them, which results from interactions between the lowest two (1)A1 states. In the present work, valence correlated energies of the 1(1)A1 state and the 2(1)A1 state were calculated at the 1(1)A1 open minimum, the 1(1)A1 ring minimum, the transition state between these two minima, the minimum of the 2(1)A1 state, and the conical intersection between the two states. The geometries were determined at the full-valence multi-configuration self-consistent-field level. Configuration interaction (CI) expansions up to quadruple excitations were calculated with triple-zeta atomic basis sets. The CI expansions based on eight different reference configuration spaces were explored. To obtain some of the quadruple excitation energies, the method of Correlation Energy Extrapolation by Intrinsic Scaling was generalized to the simultaneous extrapolation for two states. This extrapolation method was shown to be very accurate. On the other hand, none of the CI expansions were found to have converged to millihartree (mh) accuracy at the quadruple excitation level. The data suggest that convergence to mh accuracy is probably attained at the sextuple excitation level. On the 1(1)A1 state, the present calculations yield the estimates of (ring minimum-open minimum) ∼45-50 mh and (transition state-open minimum) ∼85-90 mh. For the (2(1)A1-(1)A1) excitation energy, the estimate of ∼130-170 mh is found at the open minimum and 270-310 mh at the ring minimum. At the transition state, the difference (2(1)A1-(1)A1) is found to be between 1 and 10 mh. The geometry of the transition state on the 1(1)A1 surface and that of the minimum on the 2(1)A1 surface nearly coincide. More accurate predictions of the energy differences also require CI expansions to at least sextuple excitations with respect to the valence space. For every wave function considered, the omission of the correlations of the 2s oxygen orbitals, which is a widely used approximation, was found to cause errors of about ±10 mh with respect to the energy differences.
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Affiliation(s)
- Daniel Theis
- Department of Chemistry and Ames Laboratory USDOE, Iowa State University, Ames, Iowa 50011, USA
| | - Joseph Ivanic
- Advanced Biomedical Computing Center, Frederick National Laboratory for Cancer Research, DSITP, Leidos Biomedical Research, Inc., Frederick, Maryland 21702, USA
| | - Theresa L Windus
- Department of Chemistry and Ames Laboratory USDOE, Iowa State University, Ames, Iowa 50011, USA
| | - Klaus Ruedenberg
- Department of Chemistry and Ames Laboratory USDOE, Iowa State University, Ames, Iowa 50011, USA
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265
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Evaluation of modern DFT functionals and G3n-RAD composite methods in the modelization of organic singlet diradicals. J Mol Model 2016; 22:76. [DOI: 10.1007/s00894-016-2950-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 02/29/2016] [Indexed: 11/26/2022]
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266
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Dral P, Wu X, Spörkel L, Koslowski A, Thiel W. Semiempirical Quantum-Chemical Orthogonalization-Corrected Methods: Benchmarks for Ground-State Properties. J Chem Theory Comput 2016; 12:1097-120. [PMID: 26771261 PMCID: PMC4785506 DOI: 10.1021/acs.jctc.5b01047] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Indexed: 11/30/2022]
Abstract
The semiempirical orthogonalization-corrected OMx methods (OM1, OM2, and OM3) go beyond the standard MNDO model by including additional interactions in the electronic structure calculation. When augmented with empirical dispersion corrections, the resulting OMx-Dn approaches offer a fast and robust treatment of noncovalent interactions. Here we evaluate the performance of the OMx and OMx-Dn methods for a variety of ground-state properties using a large and diverse collection of benchmark sets from the literature, with a total of 13035 original and derived reference data. Extensive comparisons are made with the results from established semiempirical methods (MNDO, AM1, PM3, PM6, and PM7) that also use the NDDO (neglect of diatomic differential overlap) integral approximation. Statistical evaluations show that the OMx and OMx-Dn methods outperform the other methods for most of the benchmark sets.
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Affiliation(s)
- Pavlo
O. Dral
- Max-Planck-Institut für
Kohlenforschung, Kaiser-Wilhelm-Platz
1, 45470 Mülheim
an der Ruhr, Germany
| | - Xin Wu
- Max-Planck-Institut für
Kohlenforschung, Kaiser-Wilhelm-Platz
1, 45470 Mülheim
an der Ruhr, Germany
| | - Lasse Spörkel
- Max-Planck-Institut für
Kohlenforschung, Kaiser-Wilhelm-Platz
1, 45470 Mülheim
an der Ruhr, Germany
| | - Axel Koslowski
- Max-Planck-Institut für
Kohlenforschung, Kaiser-Wilhelm-Platz
1, 45470 Mülheim
an der Ruhr, Germany
| | - Walter Thiel
- Max-Planck-Institut für
Kohlenforschung, Kaiser-Wilhelm-Platz
1, 45470 Mülheim
an der Ruhr, Germany
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267
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Determination of enthalpies of formation of energetic molecules with composite quantum chemical methods. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.01.071] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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268
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Zhou Y, Wu J, Xu X. Improving B3LYP heats of formation with three-dimensional molecular descriptors. J Comput Chem 2016; 37:1175-90. [DOI: 10.1002/jcc.24308] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 12/27/2015] [Accepted: 12/29/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Yuwei Zhou
- Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, MOE Laboratory for Computational Physical Science, Department of Chemistry, Fudan University; Shanghai 200433 China
| | - Jianming Wu
- Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, MOE Laboratory for Computational Physical Science, Department of Chemistry, Fudan University; Shanghai 200433 China
| | - Xin Xu
- Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, MOE Laboratory for Computational Physical Science, Department of Chemistry, Fudan University; Shanghai 200433 China
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269
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Shi H, Wang Y, Hua R. Acid-catalyzed carboxylic acid esterification and ester hydrolysis mechanism: acylium ion as a sharing active intermediate via a spontaneous trimolecular reaction based on density functional theory calculation and supported by electrospray ionization-mass spectrometry. Phys Chem Chem Phys 2016; 17:30279-91. [PMID: 26445892 DOI: 10.1039/c5cp02914g] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By DFT calculation, we found that acid-catalyzed carboxylic acid esterification and ester hydrolysis are brief two-step reactions. First, the carboxylic acid hydroxyl-oxygen or ester alkyl-oxygen is protonated, which generates a highly active acylium ion. The protonation requires an activation energy (Ea) of 4-10 kcal mol(-1), and is the rate-controlling step of the esterification or hydrolysis. Sequentially, the acylium ion spontaneously reacts with two alcohol or two water molecules to form a neutral product molecule; this is a trimolecular reaction. The acylium ion is the highly active intermediate shared by esterification and hydrolysis. ESI-MS data for several typical carboxylic acids confirmed that their acylium ions are easily generated. For 2,4,6-trialkylbenzoic acid and its ester, the two unsubstituted carbons in the benzene ring are very easily protonated, and we have thus revealed the root of the success of Newman's method. Based on these results, the popular esterification and hydrolysis mechanism in organic chemistry textbooks is incorrect.
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Affiliation(s)
- Hongchang Shi
- Department of Chemistry, Tsinghua University, Beijing 100084, China.
| | - Yilei Wang
- Department of Chemistry, Tsinghua University, Beijing 100084, China.
| | - Ruimao Hua
- Department of Chemistry, Tsinghua University, Beijing 100084, China.
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270
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Hydrogen Abstraction from Fluorinated Ethyl Methyl Ether Systems by OH Radicals. ADVANCES IN CHEMICAL PHYSICS 2016. [DOI: 10.1155/2016/3740278] [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
A systematic computational investigation of hydrogen abstraction by OH from the full series of fluorinated ethyl methyl ethers (EME) containing at least one H and one F, C2HnX5-nOCHmX3-m (n=0–5, m=0–3; and n=m=0 not allowed), including 147 reactants and 469 transition states, has been carried out, employing the MP2/6-31G(d) level of theory. Results for optimized geometries, including evidence of intramolecular hydrogen bonding in transition states, and barrier heights are presented. Trends pertaining to the number of fluorines substituted, key bond lengths, barrier heights, and key bond angles were found with good correlations and were investigated. An increase in the number of F increases the barrier height of the reaction. An increase in some parameters such as C–H length of TS, relative change in C–H from reactants to TS, ∠COC of reactants, ∠HOH in the TS, and relative change in ∠HOH between TS and free water bond angle also correlates with increased barrier height. An increase in other parameters like C–H length in the reactants and hydrogen bonding can decrease the barrier height.
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271
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272
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Richard RM, Marshall MS, Dolgounitcheva O, Ortiz JV, Brédas JL, Marom N, Sherrill CD. Accurate Ionization Potentials and Electron Affinities of Acceptor Molecules I. Reference Data at the CCSD(T) Complete Basis Set Limit. J Chem Theory Comput 2016; 12:595-604. [PMID: 26731487 DOI: 10.1021/acs.jctc.5b00875] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In designing organic materials for electronics applications, particularly for organic photovoltaics (OPV), the ionization potential (IP) of the donor and the electron affinity (EA) of the acceptor play key roles. This makes OPV design an appealing application for computational chemistry since IPs and EAs are readily calculable from most electronic structure methods. Unfortunately reliable, high-accuracy wave function methods, such as coupled cluster theory with single, double, and perturbative triples [CCSD(T)] in the complete basis set (CBS) limit are too expensive for routine applications to this problem for any but the smallest of systems. One solution is to calibrate approximate, less computationally expensive methods against a database of high-accuracy IP/EA values; however, to our knowledge, no such database exists for systems related to OPV design. The present work is the first of a multipart study whose overarching goal is to determine which computational methods can be used to reliably compute IPs and EAs of electron acceptors. This part introduces a database of 24 known organic electron acceptors and provides high-accuracy vertical IP and EA values expected to be within ±0.03 eV of the true non-relativistic, vertical CCSD(T)/CBS limit. Convergence of IP and EA values toward the CBS limit is studied systematically for the Hartree-Fock, MP2 correlation, and beyond-MP2 coupled cluster contributions to the focal point estimates.
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Affiliation(s)
- Ryan M Richard
- Center for Computational Molecular Science and Technology, School of Chemistry and Biochemistry, and School of Computational Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States
| | - Michael S Marshall
- Center for Computational Molecular Science and Technology, School of Chemistry and Biochemistry, and School of Computational Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States
| | - O Dolgounitcheva
- Department of Chemistry and Biochemistry, Auburn University , Auburn, Alabama 36849-5312, United States
| | - J V Ortiz
- Department of Chemistry and Biochemistry, Auburn University , Auburn, Alabama 36849-5312, United States
| | - Jean-Luc Brédas
- Solar & Photovoltaics Engineering Research Center, Physical Science and Engineering Division King Abdullah University of Science and Technology , Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Noa Marom
- Department of Physics, Tulane University , New Orleans, Louisiana 70118-5645, United States
| | - C David Sherrill
- Center for Computational Molecular Science and Technology, School of Chemistry and Biochemistry, and School of Computational Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States
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273
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Brémond É, Ciofini I, Adamo C. Gradient-regulated connection-based correction for the PBE exchange: the PBEtrans model. Mol Phys 2016. [DOI: 10.1080/00268976.2015.1132788] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Éric Brémond
- CompuNet, Istituto Italiano di Tecnologia, Genoa, Italy
| | - Ilaria Ciofini
- Institut de Recherche de Chimie Paris, École Nationale Supérieure de Chimie de Paris, Chimie ParisTech, Paris, France
| | - Carlo Adamo
- CompuNet, Istituto Italiano di Tecnologia, Genoa, Italy
- Institut de Recherche de Chimie Paris, École Nationale Supérieure de Chimie de Paris, Chimie ParisTech, Paris, France
- Institut Universitaire de France, Paris, France
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274
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Brémond É, Savarese M, Su NQ, Pérez-Jiménez ÁJ, Xu X, Sancho-García JC, Adamo C. Benchmarking Density Functionals on Structural Parameters of Small-/Medium-Sized Organic Molecules. J Chem Theory Comput 2016; 12:459-65. [PMID: 26730741 DOI: 10.1021/acs.jctc.5b01144] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this Letter we report the error analysis of 59 exchange-correlation functionals in evaluating the structural parameters of small- and medium-sized organic molecules. From this analysis, recently developed double hybrids, such as xDH-PBE0, emerge as the most reliable methods, while global hybrids confirm their robustness in reproducing molecular structures. Notably the M06-L density functional is the only semilocal method reaching an accuracy comparable to hybrids'. A comparison with errors obtained on energetic databases (including thermochemistry, reaction barriers, and interaction energies) indicate that most of the functionals have a coherent behavior, showing low (or high) deviations on both energy and structure data sets. Only a few of them are more prone toward one of these two properties.
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Affiliation(s)
- Éric Brémond
- CompuNet, Istituto Italiano di Tecnologia , via Morego 30, I-16163 Genoa, Italy
| | - Marika Savarese
- CompuNet, Istituto Italiano di Tecnologia , via Morego 30, I-16163 Genoa, Italy
| | - Neil Qiang Su
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, MOE Laboratory for Computational Physical Science, Department of Chemistry, Fudan University , Shanghai 200433, China
| | | | - Xin Xu
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, MOE Laboratory for Computational Physical Science, Department of Chemistry, Fudan University , Shanghai 200433, China
| | | | - Carlo Adamo
- CompuNet, Istituto Italiano di Tecnologia , via Morego 30, I-16163 Genoa, Italy.,Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris (IRCP) , F-75005 Paris, France.,Institut Universitaire de France , 103 Boulevard Saint Michel, F-75005 Paris, France
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275
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Feller D. Application of a convergent, composite coupled cluster approach to bound state, adiabatic electron affinities in atoms and small molecules. J Chem Phys 2016; 144:014105. [DOI: 10.1063/1.4939184] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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276
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Caffarel M, Applencourt T, Giner E, Scemama A. Using CIPSI Nodes in Diffusion Monte Carlo. ACS SYMPOSIUM SERIES 2016. [DOI: 10.1021/bk-2016-1234.ch002] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Michel Caffarel
- Lab. Chimie et Physique Quantiques, CNRS-Université de Toulouse, 118 route de Narbonne 31062 Toulouse, France
- Dipartimento di Scienze Chimiche e Farmaceutiche, Università degli Studi di Ferrara, Via Ludovico Ariosto, 35 44121 Ferrara, Italy
| | - Thomas Applencourt
- Lab. Chimie et Physique Quantiques, CNRS-Université de Toulouse, 118 route de Narbonne 31062 Toulouse, France
- Dipartimento di Scienze Chimiche e Farmaceutiche, Università degli Studi di Ferrara, Via Ludovico Ariosto, 35 44121 Ferrara, Italy
| | - Emmanuel Giner
- Lab. Chimie et Physique Quantiques, CNRS-Université de Toulouse, 118 route de Narbonne 31062 Toulouse, France
- Dipartimento di Scienze Chimiche e Farmaceutiche, Università degli Studi di Ferrara, Via Ludovico Ariosto, 35 44121 Ferrara, Italy
| | - Anthony Scemama
- Lab. Chimie et Physique Quantiques, CNRS-Université de Toulouse, 118 route de Narbonne 31062 Toulouse, France
- Dipartimento di Scienze Chimiche e Farmaceutiche, Università degli Studi di Ferrara, Via Ludovico Ariosto, 35 44121 Ferrara, Italy
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277
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Pradhan K, Tiwary BK, Hossain M, Chakraborty R, Nanda AK. A mechanistic study of carbonyl activation under solvent-free conditions: evidence drawn from the synthesis of imidazoles. RSC Adv 2016. [DOI: 10.1039/c5ra16386b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An assembly of carbonyls held together by weak-bond interactions (Constitutional Dynamic Chemistry) results in bulk polarisation. Molecules participate in reactions in a cycle rather than as individual moieties leading to higher reaction rates.
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Affiliation(s)
- Kiran Pradhan
- Department of Chemistry
- University of North Bengal
- Darjeeling
- India
| | | | - Mossaraf Hossain
- Department of Chemistry
- University of North Bengal
- Darjeeling
- India
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278
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Gas phase enthalpies of formation, isomerization, and disproportionation of mono- through tetra-substituted tetrahedranes: A G4(MP2)/G4 theoretical study. COMPUT THEOR CHEM 2016. [DOI: 10.1016/j.comptc.2015.11.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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279
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The Impact of Larger Basis Sets and Explicitly Correlated Coupled Cluster Theory on the Feller–Peterson–Dixon Composite Method. ANNUAL REPORTS IN COMPUTATIONAL CHEMISTRY 2016. [DOI: 10.1016/bs.arcc.2016.02.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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280
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Su NQ, Xu X. Beyond energies: geometry predictions with the XYG3 type of doubly hybrid density functionals. Chem Commun (Camb) 2016; 52:13840-13860. [DOI: 10.1039/c6cc04886b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The scaled mean absolute deviations (s-MADs) of the optimized geometric parameters for covalent bondings (the CCse set), nonbonded interactions (the S22G30 set) and the transition state structures (the TSG36 set), with Tot referring to the averaged s-MAD for general performances.
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Affiliation(s)
- Neil Qiang Su
- Collaborative Innovation Center of Chemistry for Energy Materials
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- MOE Laboratory for Computational Physical Science
- Department of Chemistry
- Fudan University
| | - Xin Xu
- Collaborative Innovation Center of Chemistry for Energy Materials
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- MOE Laboratory for Computational Physical Science
- Department of Chemistry
- Fudan University
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281
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IKABATA Y, NAKAI H. Nuclear Orbital Energy in Nuclear Orbital plus Molecular Orbital Method and Proton Binding Energy Calculation. JOURNAL OF COMPUTER CHEMISTRY-JAPAN 2016. [DOI: 10.2477/jccj.2016-0011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yasuhiro IKABATA
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University,3-4-1 Okubo, Shinjuku, Tokyo 169-8555, JAPAN
| | - Hiromi NAKAI
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University,3-4-1 Okubo, Shinjuku, Tokyo 169-8555, JAPAN
- Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, JAPAN
- CREST, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, JAPAN
- ESICB, Kyoto University, Kyotodaigaku-Katsura, Nishikyo, Kyoto 615-8520, JAPAN
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282
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Jerome SV, Hughes TF, Friesner RA. Successful application of the DBLOC method to the hydroxylation of camphor by cytochrome p450. Protein Sci 2016; 25:277-85. [PMID: 26441133 PMCID: PMC4815313 DOI: 10.1002/pro.2819] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 10/01/2015] [Accepted: 10/02/2015] [Indexed: 01/19/2023]
Abstract
The activation barrier for the hydroxylation of camphor by cytochrome P450 was computed using a mixed quantum mechanics/molecular mechanics (QM/MM) model of the full protein-ligand system and a fully QM calculation using a cluster model of the active site at the B3LYP/LACVP*/LACV3P** level of theory, which consisted of B3LYP/LACV3P** single point energies computed at B3LYP/LACVP* optimized geometries. From the QM/MM calculation, a barrier height of 17.5 kcal/mol was obtained, while the experimental value was known to be less than or equal to 10 kcal/mol. This process was repeated using the D3 correction for hybrid DFT in order to investigate whether the inadequate treatment of dispersion interaction was responsible for the overestimation of the barrier. While the D3 correction does reduce the computed barrier to 13.3 kcal/mol, it was still in disagreement with experiment. After application of a series of transition metal optimized localized orbital corrections (DBLOC) and without any refitting of parameters, the barrier was further reduced to 10.0 kcal/mol, which was consistent with the experimental results. The DBLOC method to CH bond activation in methane monooxygenase (MMO) was also applied, as a second, independent test. The barrier in MMO was known, by experiment, to be 15.4 kcal/mol. After application of the DBLOC corrections to the MMO barrier compute by B3LYP, in a previous study, and accounting for dispersion with Grimme's D3 method, the unsigned deviation from experiment was improved from 3.2 to 2.3 kcal/mol. These results suggested that the combination of dispersion plus localized orbital corrections could yield significant quantitative improvements in modeling the catalytic chemistry of transition-metal containing enzymes, within the limitations of the statistical errors of the model, which appear to be on the order of approximately 2 kcal/mole.
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Affiliation(s)
- Steven V Jerome
- Department of Chemistry, Columbia University, New York, New York, 10027
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283
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Zhao Y, Truhlar DG. Benchmark Databases for Nonbonded Interactions and Their Use To Test Density Functional Theory. J Chem Theory Comput 2015; 1:415-32. [PMID: 26641508 DOI: 10.1021/ct049851d] [Citation(s) in RCA: 800] [Impact Index Per Article: 88.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We present four benchmark databases of binding energies for nonbonded complexes. Four types of nonbonded interactions are considered: hydrogen bonding, charge transfer, dipole interactions, and weak interactions. We tested 44 DFT methods and 1 WFT method against the new databases; one of the DFT methods (PBE1KCIS) is new, and all of the other methods are from the literature. Among the tested methods, the PBE, PBE1PBE, B3P86, MPW1K, B97-1, and BHandHLYP functionals give the best performance for hydrogen bonding. MPWB1K, MP2, MPW1B95, MPW1K, and BHandHLYP give the best performances for charge-transfer interactions, and MPW3LYP, B97-1, PBE1KCIS, B98, and PBE1PBE give the best performance for dipole interactions. Finally, MP2, B97-1, MPWB1K, PBE1KCIS, and MPW1B95 give the best performance for weak interactions. Overall, MPWB1K is the best of all the tested DFT methods, with a relative error (highly averaged) of only 11%, and MPW1K, PBE1PBE, and B98 are the best of the tested DFT methods that do not contain kinetic energy density. Moving up the rungs of Jacob's ladder for nonempirical DFT, PBE improves significantly over the LSDA, and TPSS improve slightly over PBE (on average) for nonbonded interactions.
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Affiliation(s)
- Yan Zhao
- Department of Chemistry and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431
| | - Donald G Truhlar
- Department of Chemistry and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431
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284
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Anacker T, Tew DP, Friedrich J. First UHF Implementation of the Incremental Scheme for Open-Shell Systems. J Chem Theory Comput 2015; 12:65-78. [PMID: 26605975 DOI: 10.1021/acs.jctc.5b00933] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The incremental scheme makes it possible to compute CCSD(T) correlation energies to high accuracy for large systems. We present the first extension of this fully automated black-box approach to open-shell systems using an Unrestricted Hartree-Fock (UHF) wave function, extending the efficient domain-specific basis set approach to handle open-shell references. We test our approach on a set of organic and metal organic structures and molecular clusters and demonstrate standard deviations from canonical CCSD(T) values of only 1.35 kJ/mol using a triple ζ basis set. We find that the incremental scheme is significantly more cost-effective than the canonical implementation even for relatively small systems and that the ease of parallelization makes it possible to perform high-level calculations on large systems in a few hours on inexpensive computers. We show that the approximations that make our approach widely applicable are significantly smaller than both the basis set incompleteness error and the intrinsic error of the CCSD(T) method, and we further demonstrate that incremental energies can be reliably used in extrapolation schemes to obtain near complete basis set limit CCSD(T) reaction energies for large systems.
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Affiliation(s)
- Tony Anacker
- Institute for Chemistry, Chemnitz University of Technology , Straße der Nationen 62, D-09111 Chemnitz, Sachsen, Germany
| | - David P Tew
- School of Chemistry, University of Bristol , Bristol BS8 1TS, United Kingdom
| | - Joachim Friedrich
- Institute for Chemistry, Chemnitz University of Technology , Straße der Nationen 62, D-09111 Chemnitz, Sachsen, Germany
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285
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Ranasinghe DS, Frisch MJ, Petersson GA. A density functional for core-valence correlation energy. J Chem Phys 2015; 143:214111. [DOI: 10.1063/1.4935973] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- Duminda S. Ranasinghe
- Hall-Atwater Laboratories of Chemistry, Wesleyan University, Middletown, Connecticut 06459-0180, USA
| | - Michael J. Frisch
- Hall-Atwater Laboratories of Chemistry, Wesleyan University, Middletown, Connecticut 06459-0180, USA
| | - George A. Petersson
- Hall-Atwater Laboratories of Chemistry, Wesleyan University, Middletown, Connecticut 06459-0180, USA
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286
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Allison TC, Burgess DR. First-Principles Prediction of Enthalpies of Formation for Polycyclic Aromatic Hydrocarbons and Derivatives. J Phys Chem A 2015; 119:11329-65. [PMID: 26485436 PMCID: PMC5769711 DOI: 10.1021/acs.jpca.5b07908] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this article, the first-principles prediction of enthalpies of formation is demonstrated for 669 polycyclic aromatic hydrocarbon (PAH) compounds and a number of related functionalized molecules. It is shown that by extrapolating density functional theory calculations to a large basis set limit and then applying a group based correction scheme that good results may be obtained. Specifically, a mean unsigned deviation and root mean squared deviation from the experimental enthalpies of formation data of 5.0 and 6.4 kJ/mol, respectively, are obtained using this scheme. This computational scheme is economical to compute and straightforward to apply, while yielding results of reasonable reliability. The results are also compared for a smaller set of molecules to the predictions given by the G3B3 and G3MP2B3 variants of the Gaussian-3 model chemistry with a mean unsigned deviation and root mean squared deviation from the experimental enthalpies of formation of 4.5 and 4.8 kJ/mol, respectively.
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Affiliation(s)
- Thomas C. Allison
- Chemical Science Division, Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Stop 8320, Gaithersburg, Maryland 20899-8320, United States
| | - Donald R. Burgess
- Chemical Science Division, Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Stop 8320, Gaithersburg, Maryland 20899-8320, United States
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287
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van Setten MJ, Caruso F, Sharifzadeh S, Ren X, Scheffler M, Liu F, Lischner J, Lin L, Deslippe JR, Louie SG, Yang C, Weigend F, Neaton JB, Evers F, Rinke P. GW100: Benchmarking G0W0 for Molecular Systems. J Chem Theory Comput 2015; 11:5665-87. [DOI: 10.1021/acs.jctc.5b00453] [Citation(s) in RCA: 223] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michiel J. van Setten
- Nanoscopic
Physics, Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, Louvain-la-Neuve, 1348, Belgium
- Institute
of Nanotechnology and 3Institute of Physical Chemistry, Karlsruhe Institute of Technology Campus North, Karlsruhe, 76344 Germany
| | - Fabio Caruso
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, 14195, Germany
- Department
of Materials, University of Oxford, Oxford, OX1 3PH, United Kingdom
| | - Sahar Sharifzadeh
- Department
of Electrical and Computer Engineering, Department of Physics, Division
of Materials Science and Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Xinguo Ren
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, 14195, Germany
- Key Laboratory
of Quantum Information, University of Science and Technology of China, Hefei, 230026, China
| | - Matthias Scheffler
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, 14195, Germany
| | - Fang Liu
- School of
Applied Mathematics, Central University of Finance and Economics, Beijing, China
| | - Johannes Lischner
- Department
of Physics, University of California, Berkeley, California 94720, United States
| | | | - Jack R. Deslippe
- National Energy Research Scientific Computing Center, Berkeley, California 94720, United States
| | - Steven G. Louie
- Department
of Physics, University of California, Berkeley, California 94720, United States
| | | | - Florian Weigend
- Institute
of Nanotechnology and 3Institute of Physical Chemistry, Karlsruhe Institute of Technology Campus North, Karlsruhe, 76344 Germany
| | - Jeffrey B. Neaton
- Department
of Physics, University of California, Berkeley, California 94720, United States
- Kavli Energy NanoSciences Institute at Berkeley, Berkeley, California 94720 United States
| | - Ferdinand Evers
- Institute
of Theoretical Physics, University of Regensburg, Regensburg, 93040, Germany
| | - Patrick Rinke
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, 14195, Germany
- COMP/Department
of Applied Physics, Aalto University School of Science, Aalto 00076, Finland
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288
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289
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On the performance of various hierarchized bases in extrapolating the correlation energy to the complete basis set limit. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.10.064] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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290
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Reid DM, Collins MA. Approximating CCSD(T) Nuclear Magnetic Shielding Calculations Using Composite Methods. J Chem Theory Comput 2015; 11:5177-81. [DOI: 10.1021/acs.jctc.5b00546] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- David M. Reid
- Research School of Chemistry, The Australian National University, Canberra, ACT 0200, Australia
| | - Michael A. Collins
- Research School of Chemistry, The Australian National University, Canberra, ACT 0200, Australia
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291
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Brémond É, Savarese M, Pérez-Jiménez ÁJ, Sancho-García JC, Adamo C. Systematic Improvement of Density Functionals through Parameter-Free Hybridization Schemes. J Phys Chem Lett 2015; 6:3540-3545. [PMID: 26722720 DOI: 10.1021/acs.jpclett.5b01581] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
It is suggested here that the ultimate accuracy of DFT methods arises from the type of hybridization scheme followed. This idea can be cast into a mathematical formulation utilizing an integrand connecting the noninteracting and the interacting particle system. We consider two previously developed models for it, dubbed as HYB0 and QIDH, and assess a large number of exchange-correlation functionals against the AE6, G2/148, and S22 reference data sets. An interesting consequence of these hybridization schemes is that the error bars, including the standard deviation, are found to markedly decrease with respect to the density-based (nonhybrid) case. This improvement is substantially better than variations due to the underlying density functional used. We thus finally hypothesize about the universal character of the HYB0 and QIDH models.
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Affiliation(s)
- Éric Brémond
- CompuNet, Istituto Italiano di Tecnologia , via Morego 30, I-16163 Genoa, Italy
| | - Marika Savarese
- CompuNet, Istituto Italiano di Tecnologia , via Morego 30, I-16163 Genoa, Italy
| | | | | | - Carlo Adamo
- CompuNet, Istituto Italiano di Tecnologia , via Morego 30, I-16163 Genoa, Italy
- Institut de Recherche de Chimie Paris, IRCP CNRS UMR-8247, École Nationale Supérieure de Chimie de Paris, Chimie ParisTech, 11 rue P. et M. Curie, F-75231 Paris Cedex 05, France
- Institut Universitaire de France , 103 Boulevard Saint Michel, F-75005 Paris, France
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292
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Piecuch P, Hansen JA, Ajala AO. Benchmarking the completely renormalised equation-of-motion coupled-cluster approaches for vertical excitation energies. Mol Phys 2015. [DOI: 10.1080/00268976.2015.1076901] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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293
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Wagner JP, Schreiner PR. London’sche Dispersionswechselwirkungen in der Molekülchemie - eine Neubetrachtung sterischer Effekte. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503476] [Citation(s) in RCA: 190] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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294
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Huang S, Qi X, Zhang W, Liu T, Zhang Q. Exploring Sustainable Rocket Fuels: [Imidazolyl-Amine-BH2](+)-Cation-Based Ionic Liquids as Replacements for Toxic Hydrazine Derivatives. Chem Asian J 2015; 10:2725-32. [PMID: 26247801 DOI: 10.1002/asia.201500711] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Indexed: 11/09/2022]
Abstract
The application of hypergolic ionic liquids as propellant fuels is a newly emerging area in the fields of chemistry and propulsion science. Herein, a new class of [imidazolyl-amine-BH2](+)-cation-based ionic liquids, which included fuel-rich anions, such as dicyanamide (N(CN)2(-)) and cyanoborohydride (BH3CN(-)) anions, were synthesized and characterized. As expected, all of the ionic liquids exhibited spontaneous combustion upon contact with the oxidizer 100 % HNO3. The densities of these ionic liquids varied from 0.99-1.12 g cm(-3), and the heats of formation, predicted based on Gaussian 09 calculations, were between -707.7 and 241.8 kJ mol(-1). Among them, the salt of compound 5, that is, (1-allyl-1H-imidazole-3-yl)-(trimethylamine)-dihydroboronium dicyanamide, exhibited the lowest viscosity (168 MPa s), good thermal properties (Tg <-70 °C, Td >130 °C), and the shortest ignition-delay time (18 ms) with 100 % HNO3. These ionic fuels, as "green" replacements for toxic hydrazine-derivatives, may have potential applications as bipropellant formulations.
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Affiliation(s)
- Shi Huang
- Research Center of Energetic Material Genome Science, Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), Mianyang, 621900, China
| | - Xiujuan Qi
- Research Center of Energetic Material Genome Science, Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), Mianyang, 621900, China
| | - Wenquan Zhang
- Research Center of Energetic Material Genome Science, Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), Mianyang, 621900, China
| | - Tianlin Liu
- Research Center of Energetic Material Genome Science, Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), Mianyang, 621900, China
| | - Qinghua Zhang
- Research Center of Energetic Material Genome Science, Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), Mianyang, 621900, China.
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295
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Consiglio G, Failla S, Fortuna CG, D’Urso L, Forte G. Aggregation of a Zn(II)-salen complex: Theoretical study of structure and spectra. COMPUT THEOR CHEM 2015. [DOI: 10.1016/j.comptc.2015.05.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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296
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Heerdt G, Pereira DH, Custodio R, Morgon NH. W1CEP theory for computational thermochemistry. COMPUT THEOR CHEM 2015. [DOI: 10.1016/j.comptc.2015.05.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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297
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Wagner JP, Schreiner PR. London dispersion in molecular chemistry--reconsidering steric effects. Angew Chem Int Ed Engl 2015; 54:12274-96. [PMID: 26262562 DOI: 10.1002/anie.201503476] [Citation(s) in RCA: 633] [Impact Index Per Article: 70.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Indexed: 12/15/2022]
Abstract
London dispersion, which constitutes the attractive part of the famous van der Waals potential, has long been underappreciated in molecular chemistry as an important element of structural stability, and thus affects chemical reactivity and catalysis. This negligence is due to the common notion that dispersion is weak, which is only true for one pair of interacting atoms. For increasingly larger structures, the overall dispersion contribution grows rapidly and can amount to tens of kcal mol(-1) . This Review collects and emphasizes the importance of inter- and intramolecular dispersion for molecules consisting mostly of first row atoms. The synergy of experiment and theory has now reached a stage where dispersion effects can be examined in fine detail. This forces us to reconsider our perception of steric hindrance and stereoelectronic effects. The quantitation of dispersion energy donors will improve our ability to design sophisticated molecular structures and much better catalysts.
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Affiliation(s)
- J Philipp Wagner
- Institute of Organic Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 58, 35392 Giessen (Germany)
| | - Peter R Schreiner
- Institute of Organic Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 58, 35392 Giessen (Germany).
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298
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Somers KP, Simmie JM. Benchmarking Compound Methods (CBS-QB3, CBS-APNO, G3, G4, W1BD) against the Active Thermochemical Tables: Formation Enthalpies of Radicals. J Phys Chem A 2015; 119:8922-33. [DOI: 10.1021/acs.jpca.5b05448] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kieran P. Somers
- Combustion Chemistry Centre,
School of Chemistry, National University of Ireland, Galway, Ireland
| | - John M. Simmie
- Combustion Chemistry Centre,
School of Chemistry, National University of Ireland, Galway, Ireland
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299
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Chand D, Zhang J, Shreeve JM. Borohydride Ionic Liquids as Hypergolic Fuels: A Quest for Improved Stability. Chemistry 2015. [DOI: 10.1002/chem.201502059] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Kállay M. A systematic way for the cost reduction of density fitting methods. J Chem Phys 2015; 141:244113. [PMID: 25554139 DOI: 10.1063/1.4905005] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
We present a simple approach for the reduction of the size of auxiliary basis sets used in methods exploiting the density fitting (resolution of identity) approximation for electron repulsion integrals. Starting out of the singular value decomposition of three-center two-electron integrals, new auxiliary functions are constructed as linear combinations of the original fitting functions. The new functions, which we term natural auxiliary functions (NAFs), are analogous to the natural orbitals widely used for the cost reduction of correlation methods. The use of the NAF basis enables the systematic truncation of the fitting basis, and thereby potentially the reduction of the computational expenses of the methods, though the scaling with the system size is not altered. The performance of the new approach has been tested for several quantum chemical methods. It is demonstrated that the most pronounced gain in computational efficiency can be expected for iterative models which scale quadratically with the size of the fitting basis set, such as the direct random phase approximation. The approach also has the promise of accelerating local correlation methods, for which the processing of three-center Coulomb integrals is a bottleneck.
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Affiliation(s)
- Mihály Kállay
- MTA-BME Lendület Quantum Chemistry Research Group, Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, P.O. Box 91, H-1521 Budapest, Hungary
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