1
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Martínez FA, Adler NS, Cavasotto CN, Aucar GA. Solvent effects on the NMR shieldings of stacked DNA base pairs. Phys Chem Chem Phys 2022; 24:18150-18160. [PMID: 35861154 DOI: 10.1039/d2cp00398h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stacking effects are among the most important effects in DNA. We have recently studied their influence in fragments of DNA through the analysis of NMR magnetic shieldings, firstly in vacuo. As a continuation of this line of research we show here the influence of solvent effects on the shieldings through the application of both explicit and implicit models. We found that the explicit solvent model is more appropriate for consideration due to the results matching better in general with experiments, as well as providing clear knowledge of the electronic origin of the value of the shieldings. Our study is grounded on a recently developed theoretical model of our own, by which we are able to learn about the magnetic effects of given fragments of DNA molecules on selected base pairs. We use the shieldings of the atoms of a central base pair (guanine-cytosine) of a selected fragment of DNA molecules as descriptors of physical effects, like π-stacking and solvent effects. They can be taken separately and altogether. The effect of π-stacking is introduced through the addition of some pairs above and below of the central base pair, and now, the solvent effect is considered including a network of water molecules that consist of two solvation layers, which were fixed in the calculations performed in all fragments. We show that the solvent effects enhance the stacking effects on the magnetic shieldings of atoms that belong to the external N-H bonds. The net effect is of deshielding on both atoms. There is also a deshielding effect on the carbon atoms that belong to CO bonds, for which the oxygen atom has an explicit hydrogen bond (HB) with a solvent water molecule. Solvent effects are found to be no higher than a few percent of the total value of the shieldings (between 1% and 5%) for most atoms, although there are few for which such an effect can be higher. There is one nitrogen atom, the acceptor of the HB between guanine and cytosine, that is more highly shielded (around 15 ppm or 10%) when the explicit solvent is considered. In a similar manner, the most external nitrogen atom of cytosine and the hydrogen atom that is bonded to it are highly deshielded (around 10 ppm for nitrogen and around 3 ppm for hydrogen).
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Affiliation(s)
- Fernando A Martínez
- Institute of Modelling and Innovation on Technology (IMIT), CONICET-UNNE, Avda Libertad 5460, W3404AAS Corrientes, Argentina.,Chemistry Department, Natural and Exact Science Faculty, Northeastern University of Argentina, Avda Libertad 5460, W3404AAS Corrientes, Argentina
| | - Natalia S Adler
- Computational Drug Design and Biomedical Informatics Laboratory, Instituto de Investigaciones en Medicina Translacional (IIMT), CONICET-Universidad Austral, Pilar, Buenos Aires, Argentina.,Centro de Investigaciones en BioNanociencias (CIBION), CONICET, Buenos Aires, Argentina
| | - Claudio N Cavasotto
- Computational Drug Design and Biomedical Informatics Laboratory, Instituto de Investigaciones en Medicina Translacional (IIMT), CONICET-Universidad Austral, Pilar, Buenos Aires, Argentina.,Facultad de Ciencias Biomédicas and Facultad de Ingeniería, Universidad Austral, Pilar, Buenos Aires, Argentina.,Austral Institute for Applied Artificial Intelligence, Universidad Austral, Pilar, Buenos Aires, Argentina
| | - Gustavo A Aucar
- Institute of Modelling and Innovation on Technology (IMIT), CONICET-UNNE, Avda Libertad 5460, W3404AAS Corrientes, Argentina.,Physics Department, Natural and Exact Science Faculty, Northeastern University of Argentina, Avda Libertad 5460, W3404AAS Corrientes, Argentina.
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2
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Jeremias L, Novotný J, Repisky M, Komorovsky S, Marek R. Interplay of Through-Bond Hyperfine and Substituent Effects on the NMR Chemical Shifts in Ru(III) Complexes. Inorg Chem 2018; 57:8748-8759. [PMID: 30004686 DOI: 10.1021/acs.inorgchem.8b00073] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The links between the molecular structure and nuclear magnetic resonance (NMR) parameters of paramagnetic transition-metal complexes are still relatively unexplored. This applies particularly to the contact term of the hyperfine contribution to the NMR chemical shift. We report combining experimental NMR with relativistic density functional theory (DFT) to study a series of Ru(III) complexes with 2-substituted β-diketones. A series of complexes with systematically varied substituents was synthesized and analyzed using 1H and 13C NMR spectroscopy. The NMR spectra recorded at several temperatures were used to construct Curie plots and estimate the temperature-independent (orbital) and temperature-dependent (hyperfine) contributions to the NMR shift. Relativistic DFT calculations of electron paramagnetic resonance and NMR parameters were performed to interpret the experimental observations. The effects of individual factors such as basis set, density functional, exact-exchange admixture, and relativity are analyzed and discussed. Based on the calibration study in this work, the fully relativistic Dirac-Kohn-Sham (DKS) method, the GIAO approach (orbital shift), the PBE0 functional with the triple-ζ valence basis sets, and the polarizable continuum model for describing solvent effects were selected to calculate the NMR parameters. The hyperfine contribution to the total paramagnetic NMR (pNMR) chemical shift is shown to be governed by the Fermi-contact (FC) term, and the substituent effect (H vs Br) on the through-bond FC shifts is analyzed, interpreted, and discussed in terms of spin-density distribution, atomic spin populations, and molecular-orbital theory. In contrast to the closed-shell systems of Rh(III), the presence of a single unpaired electron in the open-shell Ru(III) analogs significantly alters the NMR resonances of the ligand atoms distant from the metal center in synergy with the substituent effect.
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Affiliation(s)
- Lukáš Jeremias
- CEITEC-Central European Institute of Technology , Masaryk University , Kamenice 5/A4 , CZ-625 00 Brno , Czechia
| | - Jan Novotný
- CEITEC-Central European Institute of Technology , Masaryk University , Kamenice 5/A4 , CZ-625 00 Brno , Czechia
| | - Michal Repisky
- Hylleraas Centre for Quantum Molecular Science, Department of Chemistry , UiT-The Arctic University of Norway , N-9037 Tromsø , Norway
| | - Stanislav Komorovsky
- Institute of Inorganic Chemistry , Slovak Academy of Sciences , Dúbravská cesta 9 , SK-84536 Bratislava , Slovakia
| | - Radek Marek
- CEITEC-Central European Institute of Technology , Masaryk University , Kamenice 5/A4 , CZ-625 00 Brno , Czechia
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3
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NMR chemical shift analysis decodes olefin oligo- and polymerization activity of d 0 group 4 metal complexes. Proc Natl Acad Sci U S A 2018; 115:E5867-E5876. [PMID: 29891699 DOI: 10.1073/pnas.1803382115] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
d0 metal-alkyl complexes (M = Ti, Zr, and Hf) show specific activity and selectivity in olefin polymerization and oligomerization depending on their ligand set and charge. Here, we show by a combined experimental and computational study that the 13C NMR chemical shift tensors of the α-carbon of metal alkyls that undergo olefin insertion signal the presence of partial alkylidene character in the metal-carbon bond, which facilitates this reaction. The alkylidene character is traced back to the π-donating interaction of a filled orbital on the alkyl group with an empty low-lying metal d-orbital of appropriate symmetry. This molecular orbital picture establishes a connection between olefin insertion into a metal-alkyl bond and olefin metathesis and a close link between the Cossee-Arlmann and Green-Rooney polymerization mechanisms. The 13C NMR chemical shifts, the α-H agostic interaction, and the low activation barrier of ethylene insertion are, therefore, the results of the same orbital interactions, thus establishing chemical shift tensors as a descriptor for olefin insertion.
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4
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Gordon CP, Yamamoto K, Searles K, Shirase S, Andersen RA, Eisenstein O, Copéret C. Metal alkyls programmed to generate metal alkylidenes by α-H abstraction: prognosis from NMR chemical shift. Chem Sci 2018; 9:1912-1918. [PMID: 29675237 PMCID: PMC5890791 DOI: 10.1039/c7sc05039a] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 01/04/2018] [Indexed: 12/24/2022] Open
Abstract
Metal alkylidenes, which are key organometallic intermediates in reactions such as olefination or alkene and alkane metathesis, are typically generated from metal dialkyl compounds [M](CH2R)2 that show distinctively deshielded chemical shifts for their α-carbons. Experimental solid-state NMR measurements combined with DFT/ZORA calculations and a chemical shift tensor analysis reveal that this remarkable deshielding originates from an empty metal d-orbital oriented in the M-Cα-Cα' plane, interacting with the Cα p-orbital lying in the same plane. This π-type interaction inscribes some alkylidene character into Cα that favors alkylidene generation via α-H abstraction. The extent of the deshielding and the anisotropy of the alkyl chemical shift tensors distinguishes [M](CH2R)2 compounds that form alkylidenes from those that do not, relating the reactivity to molecular orbitals of the respective molecules. The α-carbon chemical shifts and tensor orientations thus predict the reactivity of metal alkyl compounds towards alkylidene generation.
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Affiliation(s)
- Christopher P Gordon
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir Prelog Weg 1-5 , 8093 , Zürich , Switzerland .
| | - Keishi Yamamoto
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir Prelog Weg 1-5 , 8093 , Zürich , Switzerland .
| | - Keith Searles
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir Prelog Weg 1-5 , 8093 , Zürich , Switzerland .
| | - Satoru Shirase
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir Prelog Weg 1-5 , 8093 , Zürich , Switzerland . .,Department of Chemistry , Graduate School of Engineering Science , Osaka University , Toyonaka , Osaka 560-8531 , Japan
| | - Richard A Andersen
- Department of Chemistry , University of California , Berkeley , California 94720 , USA .
| | - Odile Eisenstein
- Institut Charles Gerhardt , UMR 5253 CNRS-UM-ENSCM , Université de Montpellier , 34095 Montpellier , France . .,Hylleraas Centre for Quantum Molecular Sciences , Department of Chemistry , University of Oslo , P.O. Box 1033, Blindern , 0315 Oslo , Norway
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir Prelog Weg 1-5 , 8093 , Zürich , Switzerland .
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5
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Novotný J, Přichystal D, Sojka M, Komorovsky S, Nečas M, Marek R. Hyperfine Effects in Ligand NMR: Paramagnetic Ru(III) Complexes with 3-Substituted Pyridines. Inorg Chem 2017; 57:641-652. [DOI: 10.1021/acs.inorgchem.7b02440] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jan Novotný
- CEITEC −
Central European Institute of Technology, Masaryk University, Kamenice 5, CZ − 62500 Brno, Czechia
| | - David Přichystal
- CEITEC −
Central European Institute of Technology, Masaryk University, Kamenice 5, CZ − 62500 Brno, Czechia
- Department of Chemistry,
Faculty of Science, Masaryk University, Kamenice 5, CZ − 62500 Brno, Czechia
| | - Martin Sojka
- CEITEC −
Central European Institute of Technology, Masaryk University, Kamenice 5, CZ − 62500 Brno, Czechia
- Department of Chemistry,
Faculty of Science, Masaryk University, Kamenice 5, CZ − 62500 Brno, Czechia
| | - Stanislav Komorovsky
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, SK-84536 Bratislava, Slovakia
| | - Marek Nečas
- CEITEC −
Central European Institute of Technology, Masaryk University, Kamenice 5, CZ − 62500 Brno, Czechia
- Department of Chemistry,
Faculty of Science, Masaryk University, Kamenice 5, CZ − 62500 Brno, Czechia
| | - Radek Marek
- CEITEC −
Central European Institute of Technology, Masaryk University, Kamenice 5, CZ − 62500 Brno, Czechia
- Department of Chemistry,
Faculty of Science, Masaryk University, Kamenice 5, CZ − 62500 Brno, Czechia
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6
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Estes DP, Gordon CP, Fedorov A, Liao WC, Ehrhorn H, Bittner C, Zier ML, Bockfeld D, Chan KW, Eisenstein O, Raynaud C, Tamm M, Copéret C. Molecular and Silica-Supported Molybdenum Alkyne Metathesis Catalysts: Influence of Electronics and Dynamics on Activity Revealed by Kinetics, Solid-State NMR, and Chemical Shift Analysis. J Am Chem Soc 2017; 139:17597-17607. [DOI: 10.1021/jacs.7b09934] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Deven P. Estes
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
| | - Christopher P. Gordon
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
| | - Alexey Fedorov
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
| | - Wei-Chih Liao
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
| | - Henrike Ehrhorn
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Celine Bittner
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Manuel Luca Zier
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Dirk Bockfeld
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Ka Wing Chan
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
| | - Odile Eisenstein
- Institut
Charles Gerhardt, UMR 5253 CNRS-UM-ENSCM, Université de Montpellier, Place E. Bataillon, F-34095 Montpellier, France
- Hylleraas
Centre for Quantum Molecular Sciences, Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, 0315 Oslo, Norway
| | - Christophe Raynaud
- Institut
Charles Gerhardt, UMR 5253 CNRS-UM-ENSCM, Université de Montpellier, Place E. Bataillon, F-34095 Montpellier, France
| | - Matthias Tamm
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Christophe Copéret
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093 Zürich, Switzerland
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7
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Gordon C, Yamamoto K, Liao WC, Allouche F, Andersen RA, Copéret C, Raynaud C, Eisenstein O. Metathesis Activity Encoded in the Metallacyclobutane Carbon-13 NMR Chemical Shift Tensors. ACS CENTRAL SCIENCE 2017; 3:759-768. [PMID: 28776018 PMCID: PMC5532720 DOI: 10.1021/acscentsci.7b00174] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Indexed: 06/02/2023]
Abstract
Metallacyclobutanes are an important class of organometallic intermediates, due to their role in olefin metathesis. They can have either planar or puckered rings associated with characteristic chemical and physical properties. Metathesis active metallacyclobutanes have short M-Cα/α' and M···Cβ distances, long Cα/α'-Cβ bond length, and isotropic 13C chemical shifts for both early d0 and late d4 transition metal compounds for the α- and β-carbons appearing at ca. 100 and 0 ppm, respectively. Metallacyclobutanes that do not show metathesis activity have 13C chemical shifts of the α- and β-carbons at typically 40 and 30 ppm, respectively, for d0 systems, with upfield shifts to ca. -30 ppm for the α-carbon of metallacycles with higher d n electron counts (n = 2 and 6). Measurements of the chemical shift tensor by solid-state NMR combined with an orbital (natural chemical shift, NCS) analysis of its principal components (δ11 ≥ δ22 ≥ δ33) with two-component calculations show that the specific chemical shift of metathesis active metallacyclobutanes originates from a low-lying empty orbital lying in the plane of the metallacyclobutane with local π*(M-Cα/α') character. Thus, in the metathesis active metallacyclobutanes, the α-carbons retain some residual alkylidene character, while their β-carbon is shielded, especially in the direction perpendicular to the ring. Overall, the chemical shift tensors directly provide information on the predictive value about the ability of metallacyclobutanes to be olefin metathesis intermediates.
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Affiliation(s)
- Christopher
P. Gordon
- Department
of Chemistry and Applied Biosciences, ETH
Zürich, Vladimir Prelog Weg 1-5, 8093, Zürich, Switzerland
| | - Keishi Yamamoto
- Department
of Chemistry and Applied Biosciences, ETH
Zürich, Vladimir Prelog Weg 1-5, 8093, Zürich, Switzerland
| | - Wei-Chih Liao
- Department
of Chemistry and Applied Biosciences, ETH
Zürich, Vladimir Prelog Weg 1-5, 8093, Zürich, Switzerland
| | - Florian Allouche
- Department
of Chemistry and Applied Biosciences, ETH
Zürich, Vladimir Prelog Weg 1-5, 8093, Zürich, Switzerland
| | - Richard A. Andersen
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - Christophe Copéret
- Department
of Chemistry and Applied Biosciences, ETH
Zürich, Vladimir Prelog Weg 1-5, 8093, Zürich, Switzerland
| | - Christophe Raynaud
- Institut
Charles
Gerhardt, UMR 5253 CNRS-Université de Montpellier, Université de Montpellier, 34095 Montpellier, France
| | - Odile Eisenstein
- Institut
Charles
Gerhardt, UMR 5253 CNRS-Université de Montpellier, Université de Montpellier, 34095 Montpellier, France
- Centre
for Theoretical and Computational Chemistry (CTCC), Department of
Chemistry, University of Oslo, P.O. Box 1033, Blindern, 0315 Oslo, Norway
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8
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Novotný J, Vícha J, Bora PL, Repisky M, Straka M, Komorovsky S, Marek R. Linking the Character of the Metal–Ligand Bond to the Ligand NMR Shielding in Transition-Metal Complexes: NMR Contributions from Spin–Orbit Coupling. J Chem Theory Comput 2017; 13:3586-3601. [DOI: 10.1021/acs.jctc.7b00444] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jan Novotný
- CEITEC
- Central European Institute of Technology, Masaryk University, Kamenice 5/A4, CZ-62500 Brno, Czechia
| | - Jan Vícha
- Centre
of
Polymer Systems, University Institute, Tomas Bata University in Zlín, Třída T. Bati, 5678, CZ-76001 Zlín, Czechia
| | - Pankaj L. Bora
- CEITEC
- Central European Institute of Technology, Masaryk University, Kamenice 5/A4, CZ-62500 Brno, Czechia
| | - Michal Repisky
- Center
for Theoretical and Computational Chemistry, Department of Chemistry, UiT − The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Michal Straka
- CEITEC
- Central European Institute of Technology, Masaryk University, Kamenice 5/A4, CZ-62500 Brno, Czechia
- Institute of Organic
Chemistry and Biochemistry of the ASCR, Flemingovo nám. 2, CZ-16610 Praha, Czechia
| | - Stanislav Komorovsky
- Institute
of Inorganic Chemistry, Slovak Academy of Science, Dúbravská
cesta 9, SK-84536 Bratislava, Slovakia
| | - Radek Marek
- CEITEC
- Central European Institute of Technology, Masaryk University, Kamenice 5/A4, CZ-62500 Brno, Czechia
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9
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Yamamoto K, Gordon CP, Liao WC, Copéret C, Raynaud C, Eisenstein O. Orbital Analysis of Carbon-13 Chemical Shift Tensors Reveals Patterns to Distinguish Fischer and Schrock Carbenes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701537] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Keishi Yamamoto
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 8093 Zürich Switzerland
| | - Christopher P. Gordon
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 8093 Zürich Switzerland
| | - Wei-Chih Liao
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 8093 Zürich Switzerland
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 8093 Zürich Switzerland
| | - Christophe Raynaud
- Institut Charles Gerhardt, UMR 5253 CNRS, cc 1501; Université de Montpellier; Place. E. Bataillon 34095 Montpellier France
| | - Odile Eisenstein
- Institut Charles Gerhardt, UMR 5253 CNRS, cc 1501; Université de Montpellier; Place. E. Bataillon 34095 Montpellier France
- Centre for Theoretical and Computational Chemistry (CTCC); Department of Chemistry; University of Oslo; P.O. Box 1033, Blindern 0315 Oslo Norway
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10
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Yamamoto K, Gordon CP, Liao WC, Copéret C, Raynaud C, Eisenstein O. Orbital Analysis of Carbon-13 Chemical Shift Tensors Reveals Patterns to Distinguish Fischer and Schrock Carbenes. Angew Chem Int Ed Engl 2017; 56:10127-10131. [DOI: 10.1002/anie.201701537] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Indexed: 01/21/2023]
Affiliation(s)
- Keishi Yamamoto
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 8093 Zürich Switzerland
| | - Christopher P. Gordon
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 8093 Zürich Switzerland
| | - Wei-Chih Liao
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 8093 Zürich Switzerland
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 8093 Zürich Switzerland
| | - Christophe Raynaud
- Institut Charles Gerhardt, UMR 5253 CNRS, cc 1501; Université de Montpellier; Place. E. Bataillon 34095 Montpellier France
| | - Odile Eisenstein
- Institut Charles Gerhardt, UMR 5253 CNRS, cc 1501; Université de Montpellier; Place. E. Bataillon 34095 Montpellier France
- Centre for Theoretical and Computational Chemistry (CTCC); Department of Chemistry; University of Oslo; P.O. Box 1033, Blindern 0315 Oslo Norway
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11
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Novotný J, Sojka M, Komorovsky S, Nečas M, Marek R. Interpreting the Paramagnetic NMR Spectra of Potential Ru(III) Metallodrugs: Synergy between Experiment and Relativistic DFT Calculations. J Am Chem Soc 2016; 138:8432-45. [DOI: 10.1021/jacs.6b02749] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jan Novotný
- CEITEC − Central European Institute
of Technology, Masaryk University, Kamenice 5, CZ − 62500 Brno, Czech Republic
| | - Martin Sojka
- CEITEC − Central European Institute
of Technology, Masaryk University, Kamenice 5, CZ − 62500 Brno, Czech Republic
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, CZ − 62500 Brno, Czech Republic
| | - Stanislav Komorovsky
- Centre for
Theoretical and Computational Chemistry, Department of Chemistry, UiT − The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Marek Nečas
- CEITEC − Central European Institute
of Technology, Masaryk University, Kamenice 5, CZ − 62500 Brno, Czech Republic
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, CZ − 62500 Brno, Czech Republic
| | - Radek Marek
- CEITEC − Central European Institute
of Technology, Masaryk University, Kamenice 5, CZ − 62500 Brno, Czech Republic
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, CZ − 62500 Brno, Czech Republic
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12
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Høyvik IM, Olsen J, Jørgensen P. Generalising localisation schemes of orthogonal orbitals to the localisation of non-orthogonal orbitals. Mol Phys 2016. [DOI: 10.1080/00268976.2016.1173733] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Ida-Marie Høyvik
- Department of Chemistry, The Norwegian University of Science and Technology, Trondheim, Norway
| | - Jeppe Olsen
- Department of Chemistry, qLEAP Center for Theoretical Chemistry, Aarhus University, Aarhus, Denmark
| | - Poul Jørgensen
- Department of Chemistry, qLEAP Center for Theoretical Chemistry, Aarhus University, Aarhus, Denmark
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13
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Liu R, Fu X, Wang C, Dawson G. Dopamine Surface Modification of Trititanate Nanotubes: Proposed In-Situ Structure Models. Chemistry 2016; 22:6071-4. [DOI: 10.1002/chem.201600075] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Ruochen Liu
- Department of Chemistry; Xian Jiaotong Liverpool University; 111 Renai Road Suzhou 215123 P.R. China
| | - Xuejian Fu
- Department of Chemistry; Xian Jiaotong Liverpool University; 111 Renai Road Suzhou 215123 P.R. China
| | - Congyi Wang
- Department of Chemistry; Xian Jiaotong Liverpool University; 111 Renai Road Suzhou 215123 P.R. China
| | - Graham Dawson
- Department of Chemistry; Xian Jiaotong Liverpool University; 111 Renai Road Suzhou 215123 P.R. China
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14
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Halbert S, Copéret C, Raynaud C, Eisenstein O. Elucidating the Link between NMR Chemical Shifts and Electronic Structure in d0 Olefin Metathesis Catalysts. J Am Chem Soc 2016; 138:2261-72. [DOI: 10.1021/jacs.5b12597] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Stéphanie Halbert
- Institut
Charles Gerhardt, UMR 5253 CNRS, cc 1501, Université de Montpellier, Place. E. Bataillon, F-34095 Montpellier, France
| | - Christophe Copéret
- ETH Zürich, Department of Chemistry and
Applied Sciences, Vladimir
Prelog Weg 1-5, 10, CH-8093 Zürich, Switzerland
| | - Christophe Raynaud
- Institut
Charles Gerhardt, UMR 5253 CNRS, cc 1501, Université de Montpellier, Place. E. Bataillon, F-34095 Montpellier, France
| | - Odile Eisenstein
- Institut
Charles Gerhardt, UMR 5253 CNRS, cc 1501, Université de Montpellier, Place. E. Bataillon, F-34095 Montpellier, France
- Centre
for Theoretical and Computational Chemistry (CTCC), Department of
Chemistry, University of Oslo, P.O. Box 1033, Blindern, 0315 Oslo, Norway
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15
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Høyvik IM, Jørgensen P. Characterization and Generation of Local Occupied and Virtual Hartree–Fock Orbitals. Chem Rev 2016; 116:3306-27. [DOI: 10.1021/acs.chemrev.5b00492] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ida-Marie Høyvik
- Department
of Chemistry, The Norwegian University of Science and Technology, Høgskoleringen 5, 7491 Trondheim, Norway
| | - Poul Jørgensen
- qLEAP
Center for Theoretical Chemistry, Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
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16
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Szatylowicz H, Stasyuk OA, Krygowski TM. Substituent Effects in Heterocyclic Systems. ADVANCES IN HETEROCYCLIC CHEMISTRY 2015. [DOI: 10.1016/bs.aihch.2015.05.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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17
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Pawlak T, Niedzielska D, Vícha J, Marek R, Pazderski L. Dimeric Pd(II) and Pt(II) chloride organometallics with 2-phenylpyridine and their solvolysis in dimethylsulfoxide. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.02.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Burkhart A, Fischer J, Mondrzyk A, Ritter H. Epoxy-Amine Resins with Controlled Reactivity. MACROMOL CHEM PHYS 2014. [DOI: 10.1002/macp.201300734] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alexander Burkhart
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich Heine Universität Düsseldorf; Universitätsstraße 1 40225 Düsseldorf Germany
| | - Julian Fischer
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich Heine Universität Düsseldorf; Universitätsstraße 1 40225 Düsseldorf Germany
| | - Adam Mondrzyk
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich Heine Universität Düsseldorf; Universitätsstraße 1 40225 Düsseldorf Germany
| | - Helmut Ritter
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich Heine Universität Düsseldorf; Universitätsstraße 1 40225 Düsseldorf Germany
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19
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Kadam SS, Maier L, Kostakis I, Pouli N, Toušek J, Nečas M, Marakos P, Marek R. Synthesis and Tautomerism of Substituted Pyrazolo[4,3-c]pyrazoles. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300606] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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20
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Standara S, Kulhánek P, Marek R, Straka M. 129Xe NMR chemical shift in Xe@C60calculated at experimental conditions: Essential role of the relativity, dynamics, and explicit solvent. J Comput Chem 2013; 34:1890-8. [DOI: 10.1002/jcc.23334] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 04/17/2013] [Accepted: 04/19/2013] [Indexed: 11/11/2022]
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21
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H⊘yvik IM, Jansik B, J⊘rgensen P. Pipek-Mezey localization of occupied and virtual orbitals. J Comput Chem 2013; 34:1456-62. [DOI: 10.1002/jcc.23281] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 03/05/2013] [Accepted: 03/05/2013] [Indexed: 11/12/2022]
Affiliation(s)
- Ida-Marie H⊘yvik
- Department of Chemistry; qLEAP Center for Theoretical Chemistry; Aarhus University; Langelandsgade 140; DK-8000; Aarhus; Denmark
| | - Branislav Jansik
- VSB-TUO; 17. listopadu 15/2172; 798 33; Ostrava-Poruba; Czech Republic
| | - Poul J⊘rgensen
- Department of Chemistry; qLEAP Center for Theoretical Chemistry; Aarhus University; Langelandsgade 140; DK-8000; Aarhus; Denmark
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22
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Chen H, Jia L, Xu X, Mao J, Wang Y, Wang C, Li H. Electronic effect of ionic-pair substituents. J PHYS ORG CHEM 2013. [DOI: 10.1002/poc.3108] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hang Chen
- Department of Chemistry, ZJU-NHU United R&D Center; Zhejiang University; Hangzhou 310027 P. R. China
| | - Lu Jia
- Department of Chemistry, ZJU-NHU United R&D Center; Zhejiang University; Hangzhou 310027 P. R. China
| | - Xuan Xu
- Department of Chemistry, ZJU-NHU United R&D Center; Zhejiang University; Hangzhou 310027 P. R. China
| | - Jianyong Mao
- Department of Chemistry, ZJU-NHU United R&D Center; Zhejiang University; Hangzhou 310027 P. R. China
| | - Yong Wang
- Department of Chemistry, ZJU-NHU United R&D Center; Zhejiang University; Hangzhou 310027 P. R. China
| | - Congmin Wang
- Department of Chemistry, ZJU-NHU United R&D Center; Zhejiang University; Hangzhou 310027 P. R. China
| | - Haoran Li
- Department of Chemistry, ZJU-NHU United R&D Center; Zhejiang University; Hangzhou 310027 P. R. China
- State Key Laboratory of Chemical Engineering, Department of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 P. R. China
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23
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Vícha J, Patzschke M, Marek R. A relativistic DFT methodology for calculating the structures and NMR chemical shifts of octahedral platinum and iridium complexes. Phys Chem Chem Phys 2013; 15:7740-54. [DOI: 10.1039/c3cp44440f] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Stasyuk OA, Szatyłowicz H, Krygowski TM. Effect of the H-bonding on aromaticity of purine tautomers. J Org Chem 2012; 77:4035-45. [PMID: 22448684 DOI: 10.1021/jo300406r] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Four tautomers of purine (1-H, 3-H, 7-H, and 9-H) and their equilibrium H-bonded complexes with F(-) and HF for acidic and basic centers, respectively, were optimized by means of the B3LYP/6-311++G(d,p) level of theory. Purine tautomer stability increases in the following series: 1-H < 3-H < 7-H < 9-H, consistent with increasing aromaticity. Furthermore, the presence of a hydrogen bond with HF does not change this order. For neutral H-bonded complexes, the strongest and the weakest intermolecular interactions occur (-14.12 and -10.49 kcal/mol) for less stable purine tautomers when the proton acceptor is located in the five- and six-membered rings, respectively. For 9-H and 7-H tautomers the order is reversed. The H-bond energy for the imidazole complex with HF amounts to -14.03 kcal/mol; hence, in the latter case, the fusion of imidazole to pyrimidine decreases its basicity. The ionic H-bonds of N(-)···HF type are stronger by ~10 kcal/mol than the neutral N···HF intermolecular interactions. The hydrogen bond N(-)···HF energies in pyrrole and imidazole are -32.28 and -30.03 kcal/mol, respectively, and are substantially stronger than those observed in purine complexes. The aromaticity of each individual ring and of the whole molecule for all tautomers in ionic complexes is very similar to that observed for the anion of purine. This is not the case for neutral complexes and purine as a reference. The N···HF bonds perturb much more the π-electron structure of five-membered rings than that of the six-membered ones. The H-bonding complexes for 7-H and 9-H tautomers are characterized by higher aromaticity and a much lower range of HOMA variability.
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Affiliation(s)
- Olga A Stasyuk
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
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25
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Pawlak T, Munzarová ML, Pazderski L, Marek R. Validation of Relativistic DFT Approaches to the Calculation of NMR Chemical Shifts in Square-Planar Pt2+ and Au3+ Complexes. J Chem Theory Comput 2011; 7:3909-23. [DOI: 10.1021/ct200366n] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tomasz Pawlak
- Center of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, PL-90363 Łódź, Poland
- Faculty of Chemistry, Nicholas Copernicus University, Gagarina 7, PL-87100 Toruń, Poland
| | | | - Leszek Pazderski
- Faculty of Chemistry, Nicholas Copernicus University, Gagarina 7, PL-87100 Toruń, Poland
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