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Árendás P, Furtenbacher T, Császár AG. Verification labels for rovibronic quantum-state energy uncertainties. Sci Rep 2024; 14:794. [PMID: 38191619 PMCID: PMC10774312 DOI: 10.1038/s41598-023-46665-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Accepted: 11/03/2023] [Indexed: 01/10/2024] Open
Abstract
Transition wavenumbers contained in line-by-line rovibronic databases can be compromised by errors of various nature. When left undetected, these errors may result in incorrect quantum-state energies, potentially compromising a large number of derived spectroscopic data. Spectroscopic networks treat the complete set of line-by-line spectroscopic data as a large graph, and through a least-squares refinement the measured line positions are converted into empirical quantum-state energies. Spectroscopic networks also offer a highly useful framework to develop mathematical tools helping to identify possible errors and conflicts within the dataset. For example, wavenumber errors can be detected by checking for violations of the law of energy conservation. This paper describes a new graph-theory tool, which results in so-called verification labels for the quantum states. Verification labels help to express the vulnerability of a calculated empirical energy value and its uncertainty against possible wavenumber errors, providing complementary information to simple statistical uncertainties.
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Affiliation(s)
- Péter Árendás
- Budapest Business University, Budapest, Hungary.
- Institute of Chemistry, ELTE Eötvös Loránd University, Budapest, Hungary.
| | - Tibor Furtenbacher
- Institute of Chemistry, ELTE Eötvös Loránd University, Budapest, Hungary
- HUN-REN-ELTE Complex Chemical Systems Research Group, Budapest, Hungary
| | - Attila G Császár
- Institute of Chemistry, ELTE Eötvös Loránd University, Budapest, Hungary
- HUN-REN-ELTE Complex Chemical Systems Research Group, Budapest, Hungary
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2
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Poskrebyshev GA. The Corrected Values of Δ
r
H
o
(C
a
H
b
O
d
, a≤16) of Atomization of the Aromatic Compounds and Their Uncertainties Determined Using Several Quantum Mechanical Approaches. ChemistrySelect 2022. [DOI: 10.1002/slct.202104502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Gregory A. Poskrebyshev
- V.L. Tal'rose Institute of Energy Problems for Chemical Physics at Federal Research Center for Chemical Physics Russian Academy of Sciences 119334 Moscow Russia Leninsky prosp., bldg. 38–2
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3
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Visser B, Beck M, Bornhauser P, Knopp G, van Bokhoven JA, Radi P, Gourlaouen C, Marquardt R. New experimental and theoretical assessment of the dissociation energy of C2. Mol Phys 2019. [DOI: 10.1080/00268976.2018.1564849] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | - Martin Beck
- Paul Scherrer Institute, Villigen, Switzerland
| | | | | | - Jeroen Anton van Bokhoven
- Paul Scherrer Institute, Villigen, Switzerland
- Institute for Chemical and Bioengineering, ETH Zurich, Zurich, Switzerland
| | - Peter Radi
- Paul Scherrer Institute, Villigen, Switzerland
| | - Christophe Gourlaouen
- Laboratoire de Chimie Quantique – Institut de Chimie – UMR 7177 CNRS/Unistra, Université de Strasbourg, Strasbourg, France
| | - Roberto Marquardt
- Laboratoire de Chimie Quantique – Institut de Chimie – UMR 7177 CNRS/Unistra, Université de Strasbourg, Strasbourg, France
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4
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Mielczarek DC, Nait Saidi C, Paricaud P, Catoire L. Generalized Prediction of Enthalpies of Formation Using DLPNO-CCSD(T) Ab Initio Calculations for Molecules Containing the Elements H, C, N, O, F, S, Cl, Br. J Comput Chem 2019; 40:768-793. [DOI: 10.1002/jcc.25763] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 11/11/2018] [Accepted: 11/13/2018] [Indexed: 12/24/2022]
Affiliation(s)
- Detlev Conrad Mielczarek
- l'Unité Chimie & Procédés (UCP); ENSTA ParisTech; 828 Boulevard des Maréchaux, Palaiseau 92120 France
| | - Chourouk Nait Saidi
- l'Unité Chimie & Procédés (UCP); ENSTA ParisTech; 828 Boulevard des Maréchaux, Palaiseau 92120 France
| | - Patrice Paricaud
- l'Unité Chimie & Procédés (UCP); ENSTA ParisTech; 828 Boulevard des Maréchaux, Palaiseau 92120 France
| | - Laurent Catoire
- l'Unité Chimie & Procédés (UCP); ENSTA ParisTech; 828 Boulevard des Maréchaux, Palaiseau 92120 France
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5
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Ganyecz Á, Kállay M, Csontos J. High Accuracy Quantum Chemical and Thermochemical Network Data for the Heats of Formation of Fluorinated and Chlorinated Methanes and Ethanes. J Phys Chem A 2018; 122:5993-6006. [PMID: 29939026 DOI: 10.1021/acs.jpca.8b00614] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Reliable heats of formation are reported for numerous fluorinated and chlorinated methane and ethane derivatives by means of an accurate thermochemical protocol, which involves explicitly correlated coupled-cluster calculations augmented with anharmonic, scalar relativistic, and diagonal Born-Oppenheimer corrections. The theoretical results, along with additional experimental data, are further enhanced with the help of the thermochemical network approach. For 28 species, out of 50, this study presents the best estimates, and discrepancies with previous reports are also highlighted. Furthermore, the effects of the less accurate theoretical data on the results yielded by thermochemical networks are discussed.
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Affiliation(s)
- Ádám Ganyecz
- MTA-BME Lendület Quantum Chemistry Research Group, Department of Physical Chemistry and Materials Science , Budapest University of Technology and Economics , P.O. Box 91, Budapest , H-1521 Hungary
| | - 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, Budapest , H-1521 Hungary
| | - József Csontos
- MTA-BME Lendület Quantum Chemistry Research Group, Department of Physical Chemistry and Materials Science , Budapest University of Technology and Economics , P.O. Box 91, Budapest , H-1521 Hungary
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7
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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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Karton A. A computational chemist's guide to accurate thermochemistry for organic molecules. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2016. [DOI: 10.1002/wcms.1249] [Citation(s) in RCA: 134] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Amir Karton
- School of Chemistry and Biochemistry; The University of Western Australia; Perth WA Australia
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Abstract
An additive, linear, atom-type-based (ATB) scheme is developed allowing no-cost estimation of zero-point vibrational energies (ZPVE) of neutral, closed-shell molecules in their ground electronic states. The atom types employed correspond to those defined within the MM2 molecular mechanics force field approach. The reference training set of 156 molecules cover chained and branched alkanes, alkenes, cycloalkanes and cycloalkenes, alkynes, alcohols, aldehydes, carboxylic acids, amines, amides, ethers, esters, ketones, benzene derivatives, heterocycles, nucleobases, all the natural amino acids, some dipeptides and sugars, as well as further simple molecules and ones containing several structural units, including several vitamins. A weighted linear least-squares fit of atom-type-based ZPVE increments results in recommended values for the following atoms, with the number of atom types defined in parentheses: H(8), D(1), B(1), C(6), N(7), O(3), F(1), Si(1), P(2), S(3), and Cl(1). The average accuracy of the ATB ZPVEs is considerably better than 1 kcal mol(-1), that is, better than chemical accuracy. The proposed ATB scheme could be extended to many more atoms and atom types, following a careful validation procedure; deviation from the MM2 atom types seems to be necessary, especially for third-row elements.
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Affiliation(s)
- Attila G Császár
- MTA-ELTE Complex Chemical Systems Research Group , P.O. Box 32, H-1518 Budapest 112, Hungary.,Laboratory of Molecular Structure and Dynamics, Institute of Chemistry, Eötvös University , Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
| | - Tibor Furtenbacher
- MTA-ELTE Complex Chemical Systems Research Group , P.O. Box 32, H-1518 Budapest 112, Hungary.,Laboratory of Molecular Structure and Dynamics, Institute of Chemistry, Eötvös University , Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
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Ganyecz Á, Csontos J, Nagy B, Kállay M. Theoretical and thermochemical network approaches to determine the heats of formation for HO2 and its ionic counterparts. J Phys Chem A 2015; 119:1164-76. [PMID: 25611209 DOI: 10.1021/jp5104643] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ádám Ganyecz
- 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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Bakowies D. Simplified Wave Function Models in Thermochemical Protocols Based on Bond Separation Reactions. J Phys Chem A 2014; 118:11811-27. [DOI: 10.1021/jp510249v] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dirk Bakowies
- Laboratory of Physical Chemistry, ETH Zürich, CH 8093 Zürich, Switzerland
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12
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Laury ML, Wilson AK. Performance of Density Functional Theory for Second Row (4d) Transition Metal Thermochemistry. J Chem Theory Comput 2013; 9:3939-46. [DOI: 10.1021/ct400379z] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marie L. Laury
- Center
for Advanced Scientific Computing and Modeling (CASCaM), Department of Chemistry, University of North Texas, Denton, Texas 76203-5017, United States
| | - Angela K. Wilson
- Center
for Advanced Scientific Computing and Modeling (CASCaM), Department of Chemistry, University of North Texas, Denton, Texas 76203-5017, United States
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Bakowies D. Assessment of Density Functional Theory for Thermochemical Approaches Based on Bond Separation Reactions. J Phys Chem A 2012; 117:228-43. [DOI: 10.1021/jp310735h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dirk Bakowies
- Laboratory of Physical
Chemistry, ETH Zürich, CH 8093 Zürich, Switzerland
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Mebel AM, Landera A. Product branching ratios in photodissociation of phenyl radical: a theoretical ab initio/Rice-Ramsperger-Kassel-Marcus study. J Chem Phys 2012; 136:234305. [PMID: 22779591 DOI: 10.1063/1.4726455] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Ab initio CCSD(T)/CBS//B3LYP/6-311G** calculations of the potential energy surface for possible dissociation channels of the phenyl radical are combined with microcanonical Rice-Ramsperger-Kassel-Marcus calculations of reaction rate constants in order to predict statistical product branching ratios in photodissociation of c-C(6)H(5) at various wavelengths. The results indicate that at 248 nm the photodissociation process is dominated by the production of ortho-benzyne via direct elimination of a hydrogen atom from the phenyl radical. At 193 nm, the statistical branching ratios are computed to be 63.4%, 21.1%, and 14.4% for the o-C(6)H(4) + H, l-C(6)H(4) ((Z)-hexa-3-ene-1,5-diyne) + H, and n-C(4)H(3) + C(2)H(2) products, respectively, in a contradiction with recent experimental measurements, which showed C(4)H(3) + C(2)H(2) as the major product. Although two lower energy pathways to the i-C(4)H(3) + C(2)H(2) products are identified, they appeared to be kinetically unfavorable and the computed statistical branching ratio of i-C(4)H(3) + C(2)H(2) does not exceed 1%. To explain the disagreement with experiment, we optimized conical intersections between the ground and the first excited electronic states of C(6)H(5) and, based on their structures and energies, suggested the following photodissociation mechanism at 193 nm: c-C(6)H(5) 1 → absorption of a photon → electronically excited 1 → internal conversion to the lowest excited state → conversion to the ground electronic state via conical intersections at CI-2 or CI-3 → non-statistical decay of the vibrationally excited radical favoring the formation of the n-C(4)H(3) + C(2)H(2) products. This scenario can be attained if the intramolecular vibrational redistribution in the CI-2 or CI-3 structures in the ground electronic state is slower than their dissociation to n-C(4)H(3) + C(2)H(2) driven by the dynamical preference.
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Affiliation(s)
- Alexander M Mebel
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, USA.
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Turányi T, Nagy T, Zsély IG, Cserháti M, Varga T, Szabó BT, Sedyó I, Kiss PT, Zempléni A, Curran HJ. Determination of rate parameters based on both direct and indirect measurements. INT J CHEM KINET 2012. [DOI: 10.1002/kin.20717] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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16
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Barna D, Nagy B, Csontos J, Császár AG, Tasi G. Benchmarking Experimental and Computational Thermochemical Data: A Case Study of the Butane Conformers. J Chem Theory Comput 2012; 8:479-86. [PMID: 26596598 DOI: 10.1021/ct2007956] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Due to its crucial importance, numerous studies have been conducted to determine the enthalpy difference between the conformers of butane. However, it is shown here that the most reliable experimental values are biased due to the statistical model utilized during the evaluation of the raw experimental data. In this study, using the appropriate statistical model, both the experimental expectation values and the associated uncertainties are revised. For the 133-196 and 223-297 K temperature ranges, 668 ± 20 and 653 ± 125 cal mol(-1), respectively, are recommended as reference values. Furthermore, to show that present-day quantum chemistry is a favorable alternative to experimental techniques in the determination of enthalpy differences of conformers, a focal-point analysis, based on coupled-cluster electronic structure computations, has been performed that included contributions of up to perturbative quadruple excitations as well as small correction terms beyond the Born-Oppenheimer and nonrelativistic approximations. For the 133-196 and 223-297 K temperature ranges, in exceptional agreement with the corresponding revised experimental data, our computations yielded 668 ± 3 and 650 ± 6 cal mol(-1), respectively. The most reliable enthalpy difference values for 0 and 298.15 K are also provided by the computational approach, 680.9 ± 2.5 and 647.4 ± 7.0 cal mol(-1), respectively.
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Affiliation(s)
- Dóra Barna
- Department of Applied and Environmental Chemistry, University of Szeged , Rerrich B. tér 1, H-6720 Szeged, Hungary
| | - Balázs Nagy
- Department of Applied and Environmental Chemistry, University of Szeged , Rerrich B. tér 1, H-6720 Szeged, Hungary
| | - József Csontos
- Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics , P.O. Box 91, H-1521 Budapest, Hungary
| | - Attila G Császár
- Institute of Chemistry, Laboratory of Molecular Spectroscopy, Loránd Eötvös University , P.O. Box 32, H-1518 Budapest 112, Hungary
| | - Gyula Tasi
- Department of Applied and Environmental Chemistry, University of Szeged , Rerrich B. tér 1, H-6720 Szeged, Hungary
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Császár AG, Fábri C, Szidarovszky T, Mátyus E, Furtenbacher T, Czakó G. The fourth age of quantum chemistry: molecules in motion. Phys Chem Chem Phys 2012; 14:1085-106. [DOI: 10.1039/c1cp21830a] [Citation(s) in RCA: 176] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Wheeler SE. Homodesmotic reactions for thermochemistry. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2011. [DOI: 10.1002/wcms.72] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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