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Gleeson R, Aggelund PA, Østergaard FC, Schaltz KF, Sauer SPA. Exploring Alternate Methods for the Calculation of High-Level Vibrational Corrections of NMR Spin-Spin Coupling Constants. J Chem Theory Comput 2024. [PMID: 38299500 DOI: 10.1021/acs.jctc.3c01223] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
Traditional nuclear magnetic resonance (NMR) calculations typically treat systems with a Born-Oppenheimer-derived electronic wave function that is solved for a fixed nuclear geometry. One can numerically account for this neglected nuclear motion by averaging over property values for all nuclear geometries with a vibrational wave function and adding this expectation value as a correction to an equilibrium geometry property value. Presented are benchmark coupled-cluster singles and doubles (CCSD) vibrational corrections to spin-spin coupling constants (SSCCs) computed at the level of vibrational second-order perturbation theory (VPT2) using the vibrational averaging driver of the CFOUR program. As CCSD calculations of vibrational corrections are very costly, cheaper electronic structure methods are explored via a newly developed Python vibrational averaging program within the Dalton Project. Namely, results obtained with the second-order polarization propagator approximation (SOPPA) and density functional theory (DFT) with the B3LYP and PBE0 exchange-correlation functionals are compared to the benchmark CCSD//CCSD(T) and experimental values. CCSD//CCSD(T) corrections are also combined with literature CC3 equilibrium geometry values to form the highest-order vibrationally corrected values available (i.e., CC3//CCSD(T) + CCSD//CCSD(T)). CCSD//CCSD(T) statistics showed favorable statistics in comparison to experimental values, albeit at an unfavorably high computational cost. A cheaper CCSD//CCSD(T) + B3LYP method showed quite similar mean absolute deviation (MAD) values as CCSD//CCSD(T), concluding that CCSD//CCSD(T) + B3LYP is optimal in terms of cost and accuracy. With reference to experimental values, a vibrational correction was not worth the cost for all of the other methods tested. Finally, deviation statistics showed that CC3//CCSD(T) + CCSD//CCSD(T) vibrational-corrected equilibrium values deteriorated in comparison to CCSD//CCSD(T) attributed to the use of a smaller basis set or lack of solvation effects for the CC3 equilibrium calculations.
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Affiliation(s)
- Ronan Gleeson
- Department of Chemistry, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Patrick A Aggelund
- Department of Chemistry, University of Copenhagen, 2100 Copenhagen, Denmark
| | | | - Kasper F Schaltz
- Department of Chemistry, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Stephan P A Sauer
- Department of Chemistry, University of Copenhagen, 2100 Copenhagen, Denmark
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Makulski W. Absolute 13C Nuclear Magnetic Shielding of Simple Isolated Molecules from Gas Phase Measurements. Phys Chem Chem Phys 2022; 24:8950-8961. [DOI: 10.1039/d2cp00231k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The new experimental value of 13C absolute shielding constant in an isolated 13CO molecule was evaluated from the 13C and 3He gas phase NMR measurements performed for 3He/13CO mixtures. The...
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Rusakov YY, Rusakova IL. An efficient method for generating property-energy consistent basis sets. New pecJ- n ( n = 1, 2) basis sets for high-quality calculations of indirect nuclear spin-spin coupling constants involving 1H, 13C, 15N, and 19F nuclei. Phys Chem Chem Phys 2021; 23:14925-14939. [PMID: 34223856 DOI: 10.1039/d1cp01984h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This paper presents a new method of generating property-energy consistent (PEC) basis sets that can be applied to any arbitrary molecular property. The PEC method generates a basis set that is optimized for the molecular property under interest, providing the least possible total molecular energy. The main algorithm of the PEC approach involves Monte Carlo simulations to generate random exponents in the predetermined range. In this work, the PEC method is introduced in the example of generation of new pecJ-n (n = 1, 2) basis sets suited for high-quality correlated calculations of indirect nuclear spin-spin coupling constants involving the most popular NMR-active nuclei: 1H, 13C, 15N, and 19F.
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Affiliation(s)
- Yuriy Yu Rusakov
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Favorsky St. 1, 664033 Irkutsk, Russian Federation.
| | - Irina L Rusakova
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Favorsky St. 1, 664033 Irkutsk, Russian Federation.
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Makulski W, Wilczek M, Jackowski K. 17O and 1H NMR spectral parameters in isolated water molecules. Phys Chem Chem Phys 2018; 20:22468-22476. [PMID: 30137101 DOI: 10.1039/c8cp01748d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Small amounts of water enriched in oxygen-17 were studied by 17O and 1H NMR in binary gaseous mixtures with Xe, Kr, CHF3 and CH3F and CO2. The distinct linear dependences of 17O and 1H chemical shifts and 1J(17O,1H) spin-spin coupling on the density of every gas solvent were measured. After the extrapolation of experimental results to zero density the relevant parameters in the isolated H217O molecule were determined. The same procedure was applied for H216O when its proton chemical shift was analyzed but the secondary isotope effect in the 1H shielding of H217O and H216O molecules was too small for detection. As shown, all the intermolecular effects in nuclear magnetic shielding are negative and these effects are more significant for 17O nuclei than for protons. It is consistent with the appropriate gas-to-liquid shifts of water which also indicate deshielding effects for both the investigated nuclei. On the other hand, the 1J0(17O,1H) coupling constant in H217O, which is completely free from intermolecular interactions, considerably differs from the 1J(17O,1H) experimental values obtained for water in liquid solutions. The present experimental data of the isolated H217O molecule are compared with selected results of shielding and spin-spin coupling calculations available from the literature and with the recent experimental data for a water molecule encapsulated in the C60 fullerene. Additionally, on the basis of actual results the magnetic dipole moment of the 17O nucleus is revalued for greater accuracy.
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Affiliation(s)
- Włodzimierz Makulski
- Laboratory of NMR Spectroscopy, Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warszawa, Poland.
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Faber R, Sauer SPA, Gauss J. Importance of Triples Contributions to NMR Spin-Spin Coupling Constants Computed at the CC3 and CCSDT Levels. J Chem Theory Comput 2017; 13:696-709. [PMID: 27992184 DOI: 10.1021/acs.jctc.6b01003] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We present the first analytical implementation of CC3 second derivatives using the spin-unrestricted approach. This allows, for the first time, the calculation of nuclear spin-spin coupling constants (SSCC) relevant to NMR spectroscopy at the CC3 level of theory in a fully analytical manner. CC3 results for the SSCCs of a number of small molecules and their fluorine substituted derivatives are compared with the corresponding coupled cluster singles and doubles (CCSD) results obtained using specialized basis sets. For one-bond couplings the change when going from CCSD to CC3 is typically 1-3%, but much higher corrections were found for 1JCN in FCN, 15.7%, and 1JOF in OF2, 6.4%. The changes vary significantly in the case of multibond couplings, with differences of up to 10%, and even 13.6% for 3JFH in fluoroacetylene. Calculations at the coupled cluster singles, doubles, and triples (CCSDT) level indicate that the most important contributions arising from connected triple excitations in the coupled cluster expansion are accounted for at the CC3 level. Thus, we believe that the CC3 method will become the standard approach for the calculation of reference values of nuclear spin-spin coupling constants.
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Affiliation(s)
- Rasmus Faber
- Department of Chemistry, University of Copenhagen , Universitetsparken 5, 2100 Copenhagen Ø, Denmark
| | - Stephan P A Sauer
- Department of Chemistry, University of Copenhagen , Universitetsparken 5, 2100 Copenhagen Ø, Denmark
| | - Jürgen Gauss
- Institut für Physikalische Chemie, Universität Mainz , 55099 Mainz, Germany
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Faber R, Kaminsky J, Sauer SPA. Rovibrational and Temperature Effects in Theoretical Studies of NMR Parameters. GAS PHASE NMR 2016. [DOI: 10.1039/9781782623816-00218] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The demand for high precision calculations of NMR shieldings (or their related values, chemical shifts δ) and spin–spin coupling constants facilitating and supporting detailed interpretations of NMR spectra increases hand in hand with the development of computational techniques and hardware resources. Highly sophisticated calculations including even relativistic effects are nowadays possible for these properties. However, NMR parameters depend not only on molecular structure and environment but also on molecular flexibility and temperature and the apparent success of theoretical predictions for molecular equilibrium geometries creates a demand for zero-point vibrational and temperature corrections. In this chapter we describe briefly the theory behind rovibrational corrections and review then some important contributions to this field.
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Affiliation(s)
- Rasmus Faber
- Department of Chemistry, University of Copenhagen Universitetsparken 5 DK-2100 Copenhagen Ø Denmark
| | - Jakub Kaminsky
- Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry 166 10 Prague Czech Republic
| | - Stephan P. A. Sauer
- Department of Chemistry, University of Copenhagen Universitetsparken 5 DK-2100 Copenhagen Ø Denmark
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Kupka T, Wieczorek PP. Theoretical and experimental NMR studies on muscimol from fly agaric mushroom (Amanita muscaria). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 153:216-225. [PMID: 26312739 DOI: 10.1016/j.saa.2015.08.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 07/13/2015] [Accepted: 08/12/2015] [Indexed: 06/04/2023]
Abstract
In this article we report results of combined theoretical and experimental NMR studies on muscimol, the bioactive alkaloid from fly agaric mushroom (Amanita muscaria). The assignment of (1)H and (13)C NMR spectra of muscimol in DMSO-d6 was supported by additional two-dimensional heteronuclear correlated spectra (2D NMR) and gauge independent atomic orbital (GIAO) NMR calculations using density functional theory (DFT). The effect of solvent in theoretical calculations was included via polarized continuum model (PCM) and the hybrid three-parameter B3LYP density functional in combination with 6-311++G(3df,2pd) basis set enabled calculation of reliable structures of non-ionized (neutral) molecule and its NH and zwitterionic forms in the gas phase, chloroform, DMSO and water. GIAO NMR calculations, using equilibrium and rovibrationally averaged geometry, at B3LYP/6-31G* and B3LYP/aug-cc-pVTZ-J levels of theory provided muscimol nuclear magnetic shieldings. The theoretical proton and carbon chemical shifts were critically compared with experimental NMR spectra measured in DMSO. Our results provide useful information on its structure in solution. We believe that such data could improve the understanding of basic features of muscimol at atomistic level and provide another tool in studies related to GABA analogs.
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Affiliation(s)
- Teobald Kupka
- Faculty of Chemistry, Opole University, Oleska 48, 45-052 Opole, Poland.
| | - Piotr P Wieczorek
- Faculty of Chemistry, Opole University, Oleska 48, 45-052 Opole, Poland.
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Jaremko Ł, Jaremko M, Buczek A, Broda MA, Kupka T, Jackowski K. 1H and 13C shielding measurements in comparison with DFT calculations performed for two 2-(acetyloamino)-N,N-dimethyl-3-phenylacrylamide isomers. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.03.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Garbacz P. Spin–spin coupling in the HD molecule determined from 1H and 2H NMR experiments in the gas-phase. Chem Phys 2014. [DOI: 10.1016/j.chemphys.2014.08.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Díez E, Esteban AL, San Fabián J, Galache MP, Casanueva J, Contreras RH. Intramolecular surfaces for vicinal proton–proton coupling constants 3JHH. Mol Phys 2014. [DOI: 10.1080/00268976.2014.891768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Theoretical prediction of structural, vibrational and NMR parameters of plastic optical fiber (POF) material precursors. Cis and trans perhydro- and perfluoro-2-methylene-4,5-dimethyl-1,3-dioxolanes. J Mol Graph Model 2014; 52:36-45. [DOI: 10.1016/j.jmgm.2014.06.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 05/14/2014] [Accepted: 06/17/2014] [Indexed: 11/18/2022]
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14
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Nozirov F, Kupka T, Stachów M. Theoretical prediction of nuclear magnetic shieldings and indirect spin-spin coupling constants in 1,1-, cis-, and trans-1,2-difluoroethylenes. J Chem Phys 2014; 140:144303. [DOI: 10.1063/1.4870396] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Teale AM, Lutnæs OB, Helgaker T, Tozer DJ, Gauss J. Benchmarking density-functional theory calculations of NMR shielding constants and spin-rotation constants using accurate coupled-cluster calculations. J Chem Phys 2013; 138:024111. [PMID: 23320672 DOI: 10.1063/1.4773016] [Citation(s) in RCA: 131] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Accurate sets of benchmark nuclear-magnetic-resonance shielding constants and spin-rotation constants are calculated using coupled-cluster singles-doubles (CCSD) theory and coupled-cluster singles-doubles-perturbative-triples [CCSD(T)] theory, in a variety of basis sets consisting of (rotational) London atomic orbitals. The accuracy of the calculated coupled-cluster constants is established by a careful comparison with experimental data, taking into account zero-point vibrational corrections. Coupled-cluster basis-set convergence is analyzed and extrapolation techniques are employed to estimate basis-set-limit quantities, thereby establishing an accurate benchmark data set. Together with the set provided for rotational g-tensors and magnetizabilities in our previous work [O. B. Lutnæs, A. M. Teale, T. Helgaker, D. J. Tozer, K. Ruud, and J. Gauss, J. Chem. Phys. 131, 144104 (2009)], it provides a substantial source of consistently calculated high-accuracy data on second-order magnetic response properties. The utility of this benchmark data set is demonstrated by examining a wide variety of Kohn-Sham exchange-correlation functionals for the calculation of these properties. None of the existing approximate functionals provide an accuracy competitive with that provided by CCSD or CCSD(T) theory. The need for a careful consideration of vibrational effects is clearly illustrated. Finally, the pure coupled-cluster results are compared with the results of Kohn-Sham calculations constrained to give the same electronic density. Routes to future improvements are discussed in light of this comparison.
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Affiliation(s)
- Andrew M Teale
- Department of Chemistry, Centre for Theoretical and Computational Chemistry, University of Oslo, P.O. Box 1033 Blindern, N-0315 Oslo, Norway
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Garbacz P, Jackowski K, Makulski W, Wasylishen RE. Nuclear Magnetic Shielding for Hydrogen in Selected Isolated Molecules. J Phys Chem A 2012; 116:11896-904. [DOI: 10.1021/jp309820v] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Piotr Garbacz
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warszawa,
Poland
| | - Karol Jackowski
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warszawa,
Poland
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18
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Sneskov K, Stanton JF. Effects of vibrational averaging on coupled cluster calculations of spin–spin coupling constants for hydrocarbons. Mol Phys 2012. [DOI: 10.1080/00268976.2012.678904] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Kristian Sneskov
- a The Lundbeck Foundation Center for Theoretical Chemistry and Department of Chemistry , Aarhus University , Langelandsgade 140, DK-8000 Aarhus C , Denmark
| | - John F. Stanton
- b Institute for Theoretical Chemistry and Department of Chemistry and Biochemistry , The University of Texas at Austin , Austin , Texas 78712-0165 , USA
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Kupka T, Nieradka M, Stachów M, Pluta T, Nowak P, Kjær H, Kongsted J, Kaminsky J. Basis Set Convergence of Indirect Spin–Spin Coupling Constants in the Kohn–Sham Limit for Several Small Molecules. J Phys Chem A 2012; 116:3728-38. [DOI: 10.1021/jp212588h] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Teobald Kupka
- Faculty of Chemistry, University of Opole, 45-052 Opole, Poland
| | | | - Michał Stachów
- Faculty of Chemistry, University of Opole, 45-052 Opole, Poland
| | - Tadeusz Pluta
- Institute of Chemistry, University of Silesia, 40-007 Katowice, Poland
| | - Piotr Nowak
- Technical University of Opole, Opole, Poland
| | - Hanna Kjær
- Department of Chemistry, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Jacob Kongsted
- Department of Physics, Chemistry
and Pharmacy, University of Southern Denmark, DK-5230 Odense, Denmark
| | - Jakub Kaminsky
- Institute of Organic Chemistry and Biochemistry, 166 10 Prague, Czech Republic
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Garbacz P, Piszczatowski K, Jackowski K, Moszynski R, Jaszuński M. Weak intermolecular interactions in gas-phase nuclear magnetic resonance. J Chem Phys 2011; 135:084310. [DOI: 10.1063/1.3624658] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Makulski W, Szyprowska A, Jackowski K. Precise determination of the 13C nuclear magnetic moment from 13C, 3He and 1H NMR measurements in the gas phase. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.06.065] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kupka T, Stachów M, Nieradka M, Kaminsky J, Pluta T. Convergence of Nuclear Magnetic Shieldings in the Kohn-Sham Limit for Several Small Molecules. J Chem Theory Comput 2010; 6:1580-9. [PMID: 26615692 DOI: 10.1021/ct100109j] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Convergence patterns and limiting values of isotropic nuclear magnetic shieldings were studied for several small molecules (N2, CO, CO2, NH3, CH4, C2H2, C2H4, C2H6, and C6H6) in the Kohn-Sham limit. Individual results of calculations using dedicated families of Jensen's basis sets (pcS-n and pcJ-n) were fitted toward the complete basis set limit (CBS) using a simple two-parameter formula. Several density functionals were used; calculated vibrational corrections (ZPV) applied; and, for comparison purposes, similar calculations performed using RHF, MP2, SOPPA, SOPPA(CCSD), and CCSD(T) methods and additionally, the aug-cc-pVTZ-J basis set. Finally, the CBS estimated results were critically compared with earlier reported literature data and experimental results. Among 42 studied DFT methods, the KTn and "pure" functionals produced the most accurate heavy atom isotropic nuclear shieldings.
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Affiliation(s)
- Teobald Kupka
- University of Opole, Faculty of Chemistry, Poland, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Prague, Czech Republic, and University of Silesia, Institute of Chemistry, Katowice, Poland
| | - Michał Stachów
- University of Opole, Faculty of Chemistry, Poland, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Prague, Czech Republic, and University of Silesia, Institute of Chemistry, Katowice, Poland
| | - Marzena Nieradka
- University of Opole, Faculty of Chemistry, Poland, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Prague, Czech Republic, and University of Silesia, Institute of Chemistry, Katowice, Poland
| | - Jakub Kaminsky
- University of Opole, Faculty of Chemistry, Poland, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Prague, Czech Republic, and University of Silesia, Institute of Chemistry, Katowice, Poland
| | - Tadeusz Pluta
- University of Opole, Faculty of Chemistry, Poland, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Prague, Czech Republic, and University of Silesia, Institute of Chemistry, Katowice, Poland
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Berionni G, Pégot B, Goumont R. Theoretical and experimental 1H, 13C and 15N NMR studies of N-alkylation of substituted tetrazolo[1,5-a]pyridines. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2010; 48:101-110. [PMID: 19937909 DOI: 10.1002/mrc.2544] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The (15)N as well as (1)H and (13)C chemical shifts of nine substituted tetrazolopyridines and their corresponding tetrazolopyridinium salts have been determined by using NMR spectroscopy at the natural abundance level of all nuclei in CD(3)CN. In this paper, we report, for the first time, the N-alkylation reaction of electron deficient tetrazolopyridines. The treatment of tetrazolopyridines 5-13 with one equivalent of trialkyloxonium tetrafluoroborate leads to a mixture of two isomers, i.e. N3- and N2-alkyl tetrazolo[1,5-a]pyridinium salts. It has been observed that the N3-isomer is always the major isomer, except in the case of the CF(3) substituent, where the two isomers are obtained in the same amount. The quaternary tetrazolopyridinium nitrogen N3 is shielded by around 100 ppm (parts per million) with respect to the parent tetrazolopyridine. Experimental data are interpreted by means of density functional theory (DFT) calculations, including solvent-induced effects, within the conductor-like polarizable continuum model (CPCM). Good agreements between theoretical and experimental (1)H, (13)C and (15)N NMR were found. The combination of multinuclear magnetic resonance spectroscopy with gauge including atomic orbital (GIAO) DFT calculations is a powerful tool in the structural elucidation for both neutral and cationic heterocycles and in the determination of the orientation of N-alkylation of tetrazolopyridines.
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Affiliation(s)
- Guillaume Berionni
- Institut Lavoisier de Versailles, CNRS UMR 8180, Université de Versailles, 45 Avenue des Etats-Unis, 78035 Versailles Cedex, France
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Jackowski K, Jaszuński M, Wilczek M. Alternative Approach to the Standardization of NMR Spectra. Direct Measurement of Nuclear Magnetic Shielding in Molecules. J Phys Chem A 2010; 114:2471-5. [DOI: 10.1021/jp9096056] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Karol Jackowski
- Laboratory of NMR Spectroscopy, Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warszawa, Poland, and Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44, 01-224 Warszawa, Poland
| | - Michał Jaszuński
- Laboratory of NMR Spectroscopy, Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warszawa, Poland, and Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44, 01-224 Warszawa, Poland
| | - Marcin Wilczek
- Laboratory of NMR Spectroscopy, Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warszawa, Poland, and Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44, 01-224 Warszawa, Poland
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Biedrzycka Z, Kamieńska-Trela K, Witanowski M. Origin of significant solvent effects on 1
J
(CC) spin-spin coupling in some acetylenes: hydrogen bonding and solvent polarity. J PHYS ORG CHEM 2009. [DOI: 10.1002/poc.1626] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Møgelhøj A, Aidas K, Mikkelsen KV, Sauer SPA, Kongsted J. Prediction of spin-spin coupling constants in solution based on combined density functional theory/molecular mechanics. J Chem Phys 2009; 130:134508. [PMID: 19355752 DOI: 10.1063/1.3098255] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present theory and implementation of calculation of spin-spin coupling constants within combined quantum mechanics/molecular mechanics methods. Special attention is given to the role of explicit solvent polarization as well as the molecular consequences due to hydrogen bonding. The model is generally applicable but is here implemented for the case of density functional theory. First applications to liquid water and acetylene in aqueous solution are presented. Good agreement between theory and experiment is obtained in both cases, thereby showing the strength of our approach. Finally, spin-spin coupling constants across hydrogen bonds are discussed considering for the first time the role of an explicit solvent on this class of spin-spin couplings.
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Affiliation(s)
- Andreas Møgelhøj
- Department of Chemistry, H. C. Ørsted Institute, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
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Del Bene JE, Alkorta I, Elguero J. A Systematic Comparison of Second-Order Polarization Propagator Approximation and Equation-of-Motion Coupled Cluster Singles and Doubles C−C, C−N, N−N, C−H, and N−H Spin−Spin Coupling Constants. J Phys Chem A 2009; 113:12411-20. [DOI: 10.1021/jp902089g] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Janet E. Del Bene
- Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, and Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
| | - Ibon Alkorta
- Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, and Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
| | - José Elguero
- Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, and Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
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Auer AA. High-level ab-initio calculation of gas-phase NMR chemical shifts and secondary isotope effects of methanol. Chem Phys Lett 2009. [DOI: 10.1016/j.cplett.2008.11.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Del Bene JE, Alkorta I, Elguero J. Systematic Comparison of Second-Order Polarization Propagator Approximation (SOPPA) and Equation-of-Motion Coupled Cluster Singles and Doubles (EOM-CCSD) Spin−Spin Coupling Constants for Molecules with C, N, and O Double and Triple Bonds and Selected F-Substituted Derivatives. J Chem Theory Comput 2008; 5:208-16. [DOI: 10.1021/ct800321b] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Janet E. Del Bene
- Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, and Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
| | - Ibon Alkorta
- Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, and Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
| | - José Elguero
- Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, and Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
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Hansen MB, Kongsted J, Toffoli D, Christiansen O. Vibrational Contributions to Indirect Spin−Spin Coupling Constants Calculated via Variational Anharmonic Approaches. J Phys Chem A 2008; 112:8436-45. [DOI: 10.1021/jp804306s] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mikkel B. Hansen
- The Lundbeck Foundation Center for Theoretical Chemistry and Center for Oxygen Microscopy and Imaging, Department of Chemistry, University of Århus, Langelandsgade 140, DK-8000 Århus C, Denmark, and Department of Theoretical Chemistry, Chemical Center, University of Lund, P.O. Box 124, S-221 00 Lund, Sweden
| | - Jacob Kongsted
- The Lundbeck Foundation Center for Theoretical Chemistry and Center for Oxygen Microscopy and Imaging, Department of Chemistry, University of Århus, Langelandsgade 140, DK-8000 Århus C, Denmark, and Department of Theoretical Chemistry, Chemical Center, University of Lund, P.O. Box 124, S-221 00 Lund, Sweden
| | - Daniele Toffoli
- The Lundbeck Foundation Center for Theoretical Chemistry and Center for Oxygen Microscopy and Imaging, Department of Chemistry, University of Århus, Langelandsgade 140, DK-8000 Århus C, Denmark, and Department of Theoretical Chemistry, Chemical Center, University of Lund, P.O. Box 124, S-221 00 Lund, Sweden
| | - Ove Christiansen
- The Lundbeck Foundation Center for Theoretical Chemistry and Center for Oxygen Microscopy and Imaging, Department of Chemistry, University of Århus, Langelandsgade 140, DK-8000 Århus C, Denmark, and Department of Theoretical Chemistry, Chemical Center, University of Lund, P.O. Box 124, S-221 00 Lund, Sweden
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Jackowski K, Jaszuński M, Kamieński B, Wilczek M. NMR frequency and magnetic dipole moment of (3)He nucleus. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2008; 193:147-149. [PMID: 18442939 DOI: 10.1016/j.jmr.2008.04.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2008] [Revised: 04/03/2008] [Accepted: 04/07/2008] [Indexed: 05/26/2023]
Abstract
We present new gas-phase NMR spectra which relate the resonance frequency of (3)He nucleus to the resonance frequency of the proton in tetramethylsilane (TMS). We discuss the dependence of (3)He resonance frequency on the density of the solvent gas, and we consider in detail the absolute shielding scales of both nuclei. Finally, we analyse the accuracy of the results, using the relationship between the resonance frequencies, absolute shielding constants and magnetic dipole moments of (1)H and (3)He nuclei.
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Affiliation(s)
- Karol Jackowski
- Laboratory of NMR Spectroscopy, Faculty of Chemistry, Warsaw University, Pasteura 1, 02093 Warsaw, Poland.
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Makulski W. 1H, 13C, and 17O nuclear magnetic shielding of methanol and its deuterated isotopomers from gas phase measurements. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.01.066] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Chernyshev KA, Krivdin LB, Larina LI, Konkova TV, Demina MM, Medvedeva AS. Configurational assignment of carbon, silicon and germanium containing propynal oximes by means of 13C-1H, 13C-13C and 15N-1H spin-spin coupling constants. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2007; 45:661-6. [PMID: 17559158 DOI: 10.1002/mrc.2017] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Configurational assignment of five carbon, silicon and germanium containing propynal oximes has been carried out by means of experimental measurements and high-level ab initio calculations of their 13C-1H, 13C-13C and 15N-1H spin-spin coupling constants. The title compounds were shown to exist in the nonequilibrium mixture of E and Z isomers with the energy difference of less than 0.3 kcal/mol calculated at the MP2/6-311G** level.
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Affiliation(s)
- Kirill A Chernyshev
- A. E. Favorsky Institute of Chemistry, Irkutsk, Siberian Branch of the Russian Academy of Sciences, Favorsky St. 1, 664033 Irkutsk, Russia
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34
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Jackowski K, Kubiszewski M, Wilczek M. 13C and 1H nuclear magnetic shielding and spin–spin coupling constants of 13C-enriched bromomethane in the gas phase. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.04.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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35
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Helgaker T, Ola B. Lutnæs, Jaszuński M. Density-Functional and Coupled-Cluster Singles-and-Doubles Calculations of the Nuclear Shielding and Indirect Nuclear Spin−Spin Coupling Constants of o-Benzyne. J Chem Theory Comput 2006; 3:86-94. [DOI: 10.1021/ct600234n] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Trygve Helgaker
- Department of Chemistry, University of Durham, South Road, Durham, DH1 3LE, United Kingdom
| | - Ola B. Lutnæs
- Department of Chemistry, University of Oslo, P.O.B. 1033 Blindern, N-0315 Oslo, Norway
| | - Michał Jaszuński
- Institute of Organic Chemistry, Polish Academy of Sciences, 01-224 Warszawa, Kasprzaka 44, Poland
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Makulski W, Jackowski K, Antusek A, Jaszuński M. Gas-Phase NMR Measurements, Absolute Shielding Scales, and Magnetic Dipole Moments of 29Si and 73Ge Nuclei. J Phys Chem A 2006; 110:11462-6. [PMID: 17020257 DOI: 10.1021/jp062557s] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
New gas-phase NMR measurements of the shielding constants of 29Si, 73Ge, and 1H nuclei in SiH4 and GeH4 are reported. The results, extrapolated to zero density, provide accurate isolated molecule values, best suited for comparison with theoretical calculations. Using the recent ab initio results for these molecules and the measured chemical shifts, we determine the absolute shielding scales for 29Si and 73Ge. This allows us to provide new values of the nuclear magnetic dipole moments for these two nuclei; in addition, we examine the dipole moments of 13C and 119Sn.
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Affiliation(s)
- W Makulski
- Laboratory of NMR Spectroscopy, Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warszawa, Poland
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38
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Macięga E, Makulski W, Jackowski K, Blicharska B. Multinuclear NMR studies of gaseous and liquid sevoflurane. J Mol Struct 2006. [DOI: 10.1016/j.molstruc.2005.09.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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39
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Antušek A, Jackowski K, Jaszuński M, Makulski W, Wilczek M. Nuclear magnetic dipole moments from NMR spectra. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2005.06.022] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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40
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Investigations of the 1J(13C1H) spin–spin coupling and 13C magnetic shielding of gaseous benzene-13C. J Mol Struct 2005. [DOI: 10.1016/j.molstruc.2004.10.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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41
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Díez * E, Casanueva J, San Fabián J, Esteban AL, Galache MP, Barone V, Peralta JE, Contreras RH. Prediction of vicinal proton–proton coupling constants3JHHfrom density functional theory calculations. Mol Phys 2005. [DOI: 10.1080/00268970412331333131] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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43
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Kubiszewski M, Makulski W, Jackowski K. 1H, 13C and 19F nuclear magnetic shielding and spin–spin coupling in gaseous trifluoromethane. J Mol Struct 2005. [DOI: 10.1016/j.molstruc.2004.09.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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44
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Krivdin LB. Non-empirical calculations of NMR indirect carbon-carbon coupling constants. Part 11--saturated carbocycles: a reference data set and a practical guide to structural elucidation. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2005; 43:101-116. [PMID: 15546131 DOI: 10.1002/mrc.1515] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Carbon-carbon spin-spin coupling constants, J(C,C), calculated at the SOPPA level for 50 mono-, bi- and polycycloalkanes in 10 previous papers are put in order and discussed on unified grounds. Basic structural trends of J(C,C) established in the original publications are summarized and briefly outlined for the representative series. Many unknown couplings are predicted with high reliability, and this provides a good reference data set and a practical guide to the structural elucidation of saturated carbocycles by means of J(C,C) coupling constants.
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Affiliation(s)
- Leonid B Krivdin
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Favorsky Street 1, 664033 Irkutsk, Russia.
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De Kowalewski DG, Contreras * RH, Díez E, Esteban A. NMRJ(C,C) scalar coupling analysis of the effects of substituents on the keto–enol tautomeric equilibrium in 2-OH-n-X-pyridines. An experimental and DFT study. Mol Phys 2004. [DOI: 10.1080/00268970412331292902] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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46
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13C and 1H nuclear magnetic shielding and spin–spin coupling constants of 13C-enriched iodomethane in gaseous mixtures with SF6 and CO2. J Mol Struct 2004. [DOI: 10.1016/j.molstruc.2003.11.061] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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47
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Intermolecular effects on spin–spin coupling and magnetic shielding constants in gaseous difluoromethane. J Mol Struct 2004. [DOI: 10.1016/j.molstruc.2003.11.059] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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48
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Wielogórska E, Makulski W, Koźmiński W, Jackowski K. 15N, 13C and 1H nuclear magnetic shielding and spin–spin coupling in gaseous 15N-enriched methylamine. J Mol Struct 2004. [DOI: 10.1016/j.molstruc.2003.11.062] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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