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Tolborg K, Jørgensen MRV, Sist M, Mamakhel A, Overgaard J, Iversen BB. Low‐Barrier Hydrogen Bonds in Negative Thermal Expansion Material H
3
[Co(CN)
6
]. Chemistry 2019; 25:6814-6822. [DOI: 10.1002/chem.201900358] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Kasper Tolborg
- Center for Materials CrystallographyDepartment of Chemistry and iNANOAarhus University Langelandsgade 140 8000 Aarhus C Denmark
| | - Mads R. V. Jørgensen
- Center for Materials CrystallographyDepartment of Chemistry and iNANOAarhus University Langelandsgade 140 8000 Aarhus C Denmark
- MAXIV LaboratoryLund University Fotongatan 2 22594 Lund Sweden
| | - Mattia Sist
- Center for Materials CrystallographyDepartment of Chemistry and iNANOAarhus University Langelandsgade 140 8000 Aarhus C Denmark
| | - Aref Mamakhel
- Center for Materials CrystallographyDepartment of Chemistry and iNANOAarhus University Langelandsgade 140 8000 Aarhus C Denmark
| | - Jacob Overgaard
- Center for Materials CrystallographyDepartment of Chemistry and iNANOAarhus University Langelandsgade 140 8000 Aarhus C Denmark
| | - Bo B. Iversen
- Center for Materials CrystallographyDepartment of Chemistry and iNANOAarhus University Langelandsgade 140 8000 Aarhus C Denmark
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2
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Rusinska-Roszak D. Energy of Intramolecular Hydrogen Bonding in ortho-Hydroxybenzaldehydes, Phenones and Quinones. Transfer of Aromaticity from ipso-Benzene Ring to the Enol System(s). Molecules 2017; 22:E481. [PMID: 28335484 PMCID: PMC6155192 DOI: 10.3390/molecules22030481] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/13/2017] [Accepted: 03/15/2017] [Indexed: 01/10/2023] Open
Abstract
Intramolecular hydrogen bonding (HB) is one of the most studied noncovalent interactions of molecules. Many physical, spectral, and topological properties of compounds are under the influence of HB, and there are many parameters used to notice and to describe these changes. Hitherto, no general method of measurement of the energy of intramolecular hydrogen bond (EHB) has been put into effect. We propose the molecular tailoring approach (MTA) for EHB calculation, modified to apply it to Ar-O-H∙∙∙O=C systems. The method, based on quantum calculations, was checked earlier for hydroxycarbonyl-saturated compounds, and for structures with resonance-assisted hydrogen bonding (RAHB). For phenolic compounds, the accuracy, repeatability, and applicability of the method is now confirmed for nearly 140 structures. For each structure its aromaticity HOMA indices were calculated for the central (ipso) ring and for the quasiaromatic rings given by intramolecular HB. The comparison of calculated HB energies and values of estimated aromaticity indices allowed us to observe, in some substituted phenols and quinones, the phenomenon of transfer of aromaticity from the ipso-ring to the H-bonded ring via the effect of electron delocalization.
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Affiliation(s)
- Danuta Rusinska-Roszak
- Institute of Chemical Technology and Engineering, Poznan University of Technology, ul. Berdychowo 4, 60-965 Poznan, Poland.
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3
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Comparisons between Crystallography Data and Theoretical Parameters and the Formation of Intramolecular Hydrogen Bonds: Benznidazole. CRYSTALS 2016. [DOI: 10.3390/cryst6050056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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4
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Anand M, Fernández I, Schaefer HF, Wu JIC. Hydrogen bond-aromaticity cooperativity in self-assembling 4-pyridone chains. J Comput Chem 2015; 37:59-63. [DOI: 10.1002/jcc.23976] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 05/26/2015] [Accepted: 05/28/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Megha Anand
- Center for Computational Quantum Chemistry; University of Georgia; Athens Georgia 30602
| | - Israel Fernández
- Departamento de Química Orgánica I, Facultdad de Ciencias Químicas; Universidad Complutense de Madrid; 28040 Madrid Spain
| | - Henry F. Schaefer
- Center for Computational Quantum Chemistry; University of Georgia; Athens Georgia 30602
| | - Judy I-Chia Wu
- Center for Computational Quantum Chemistry; University of Georgia; Athens Georgia 30602
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5
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Frantsuzov I, Ford SJ, Radosavljevic Evans I, Horsewill AJ, Trommsdorff HP, Johnson MR. Measurement of proton tunneling in short hydrogen bonds in single crystals of 3,5 pyridinedicarboxylic acid using nuclear magnetic resonance spectroscopy. PHYSICAL REVIEW LETTERS 2014; 113:018301. [PMID: 25032933 DOI: 10.1103/physrevlett.113.018301] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2013] [Indexed: 06/03/2023]
Abstract
In this Letter, we present NMR spin-lattice and relaxometry data for proton transfer in one of the shortest known N-H⋯O hydrogen bonds in a single crystal of 3,5 pyridinedicarboxylic acid (35PDCA). It is widely believed that proton transfer by quantum tunneling does not occur in short hydrogen bonds since the ground state energy level lies above the potential barrier, yet these data show a temperature independent, proton tunneling rate below 77 K and a clear deviation from classical dynamics below 91 K. This study therefore suggests that proton tunneling occurs in all hydrogen bonds at low temperature and the crossover temperature to classical hopping must be determined when evaluating whether proton tunneling persists at higher temperature, for example in enzyme catalysis under physiological conditions.
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Affiliation(s)
- I Frantsuzov
- School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - S J Ford
- Institute Laue Langevin, BP 156, 38042 Grenoble, France and Department of Chemistry, Durham University, Durham DH1 3LE, United Kingdom
| | | | - A J Horsewill
- School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - H P Trommsdorff
- Institute Laue Langevin, BP 156, 38042 Grenoble, France and University of Grenoble 1/CNRS, LIPhy UMR 5588, BP 87, 38041 Grenoble, France
| | - M R Johnson
- Institute Laue Langevin, BP 156, 38042 Grenoble, France
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Synthesis, biological evaluation, molecular docking and theoretical evaluation of ADMET properties of nepodin and chrysophanol derivatives as potential cyclooxygenase (COX-1, COX-2) inhibitors. Eur J Med Chem 2014; 80:47-56. [DOI: 10.1016/j.ejmech.2014.04.033] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2013] [Revised: 03/03/2014] [Accepted: 04/10/2014] [Indexed: 01/05/2023]
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7
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Durlak P, Latajka Z. Ab InitioMolecular Dynamics Study of the Very Short O–H···O Hydrogen Bonds in the Condensed Phases. J Chem Theory Comput 2012; 9:65-72. [DOI: 10.1021/ct300589r] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Piotr Durlak
- Faculty of Chemistry, University of Wrocław, Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Zdzisław Latajka
- Faculty of Chemistry, University of Wrocław, Joliot-Curie 14, 50-383 Wrocław, Poland
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8
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Electronic properties of two adjacent intramolecular hydrogen bonds and their effects to the molecular charge distribution: Experimental synchrotron microcrystal and DFT computational study. Chem Phys 2012. [DOI: 10.1016/j.chemphys.2012.08.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Dos Santos LH, Rodrigues BL, Idemori YM, Fernandes NG. Short hydrogen bonds in a new salt of pyromellitic acid: An experimental charge density investigation. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.02.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
This paper provides a short introduction to the basics of electron density investigations. The two predominant approaches for the modelling and various interpretations of electron density distributions are presented. Their potential translations into chemical concepts are explained. The focus of the article lies on the deduction of chemical properties from charge density studies in some selected main group compounds. The relationship between the obtained numerical data and commonly accepted simple chemical concepts unfortunately is not always straightforward, and often the chemist relies on heuristic connections rather than rigorously defined ones. This article tries to demonstrate how charge density analyses can shed light on aspects of chemical bonding and reactivity resulting from the determined bonding situation. Sometimes this helps to identify misconceptions and sets the scene for new unconventional synthetic approaches.
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Affiliation(s)
- Dietmar Stalke
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany.
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11
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Gatti C. The Source Function Descriptor as a Tool to Extract Chemical Information from Theoretical and Experimental Electron Densities. ELECTRON DENSITY AND CHEMICAL BONDING II 2011. [DOI: 10.1007/430_2010_31] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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Abstract
In a symmetric hydrogen bond (H-bond), the hydrogen atom is perfectly centered between the two donor atoms. The energy diagram for hydrogen motion is thus a single-well potential, rather than the double-well potential of a more typical H-bond, in which the hydrogen is covalently bonded to one atom and H-bonded to the other. Examples of symmetric H-bonds are often found in crystal structures, and they exhibit the distinctive feature of unusually short length: for example, the O-O distance in symmetric OHO H-bonds is found to be less than 2.5 Å. In comparison, the O-O distance in a typical asymmetric H-bond, such as ROH···OR(2), ranges from about 2.7 to 3.0 Å. In this Account, we briefly review and update our use of the method of isotopic perturbation to search for a symmetric, centered, or single-well-potential H-bond in solution. Such low-barrier H-bonds are thought to be unusually strong, owing perhaps to the resonance stabilization of two identical resonance forms [A-H···B ↔ A···H-B]. This presumptive bond strength has been invoked to explain some enzyme-catalyzed reactions. Yet in solution, a wide variety of OHO, OHN, and NHN H-bonds have all been found to be asymmetric, in double-well potentials. Examples include the monoanion of (±)-2,3-di-tert-butylsuccinic acid and a protonated tetramethylnaphthalenediamine, even though these two ions are often considered prototypes of species with strong H-bonds. In fact, all of the purported examples of strong, symmetric H-bonds have been found to exist in solution as pairs of asymmetric tautomers, in contrast to their symmetry in some crystals. The asymmetry can be attributed to the disorder of the local solvation environment, which leads to an equilibrium among solvatomers (that is, isomers that differ in solvation). If the disorder of the local environment is sufficient to break symmetry, then symmetry itself is not sufficient to stabilize the H-bond, and symmetric H-bonds do not have an enhanced stability or an unusual strength. Nor are short H-bonds unusually strong. We discuss previous evidence for "short, strong, low-barrier" H-bonds and show it to be based on ambiguous comparisons. The role of such H-bonds in enzyme-catalyzed reactions is then ascribed not to any unusual strength of the H-bond itself but to relief of "strain."
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Affiliation(s)
- Charles L. Perrin
- Department of Chemistry & Biochemistry, University of California—San Diego, La Jolla, California 92093-0358, United States
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13
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Car–Parrinello and path integral molecular dynamics study of the hydrogen bonds in 2-acetyl-1,8-dihydroxy-3,6-dimethylnaphthalene. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2010.09.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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14
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Lee HM, Kumar A, Kołaski M, Kim DY, Lee EC, Min SK, Park M, Choi YC, Kim KS. Comparison of cationic, anionic and neutral hydrogen bonded dimers. Phys Chem Chem Phys 2010; 12:6278-87. [PMID: 20405079 DOI: 10.1039/b925551f] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Short Strong Hydrogen Bonds (SSHBs) play an important role in many fields of physics, chemistry and biology. Since it is known that SSHBs exist in many biological systems, the role of hydrogen bonding motifs has been particularly interesting in enzyme catalysis, bio-metabolism, protein folding and proton transport phenomena. To explore the characteristic features of neutral, anionic and cationic hydrogen bonds, we have carried out theoretical studies of diverse homogeneous and heterogeneous hydrogen bonded dimers including water, peroxides, alcohols, ethers, aldehydes, ketones, carboxylic acids, anhydrides, and nitriles. Geometry optimization and harmonic frequency calculations are performed at the levels of Density Functional Theory (DFT) and Møller-Plesset second order perturbation (MP2) theory. First principles Car-Parrinello molecular dynamics (CPMD) simulations are performed to obtain IR spectra derived from velocity- and dipole-autocorrelation functions. We find that the hydrogen bond energy is roughly inversely proportional to the fourth power of the r(O/N-H) distance. Namely, the polarization of the proton accepting O/N atom by the proton-donating H atom reflects most of the binding energy in these diverse cation/anion/neutral hydrogen bonds. The present study gives deeper insight into the nature of hydrogen-bonded dimers including SSHBs.
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Affiliation(s)
- Han Myoung Lee
- Center for Superfunctional Materials, Department of Chemistry, Pohang University of Science and Technology, San 31, Hyojadong, Namgu, 790-784 Pohang, South Korea
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Schmidtmann M, Farrugia LJ, Middlemiss DS, Gutmann MJ, McIntyre GJ, Wilson CC. Experimental and Theoretical Charge Density Study of Polymorphic Isonicotinamide−Oxalic Acid Molecular Complexes with Strong O···H···N Hydrogen Bonds. J Phys Chem A 2009; 113:13985-97. [DOI: 10.1021/jp9067813] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marc Schmidtmann
- WestCHEM, Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K., ISIS, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, U.K., and Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France
| | - Louis J. Farrugia
- WestCHEM, Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K., ISIS, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, U.K., and Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France
| | - Derek S. Middlemiss
- WestCHEM, Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K., ISIS, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, U.K., and Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France
| | - Matthias J. Gutmann
- WestCHEM, Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K., ISIS, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, U.K., and Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France
| | - Garry J. McIntyre
- WestCHEM, Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K., ISIS, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, U.K., and Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France
| | - Chick C. Wilson
- WestCHEM, Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K., ISIS, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, U.K., and Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France
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Affiliation(s)
- Louis J. Farrugia
- Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, Scotland U.K., and Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3,CH3012 Bern, Switzerland
| | - Piero Macchi
- Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, Scotland U.K., and Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3,CH3012 Bern, Switzerland
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Lo Presti L, Gatti C. Using the Source Function descriptor to dampen the multipole model bias in charge density studies from X-ray structure factors refinements. Chem Phys Lett 2009. [DOI: 10.1016/j.cplett.2009.06.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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19
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Estimation on the intramolecular 10-membered ring NH···OC hydrogen-bonding energies in glycine and alanine peptides. J Comput Chem 2009; 30:1251-60. [DOI: 10.1002/jcc.21141] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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20
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McGrady GS, Sirsch P, Chatterton NP, Ostermann A, Gatti C, Altmannshofer S, Herz V, Eickerling G, Scherer W. Nature of the Bonding in Metal-Silane σ-Complexes. Inorg Chem 2009; 48:1588-98. [DOI: 10.1021/ic8019777] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- G. Sean McGrady
- Department of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, N.B. E3B 5A3, Canada, Department of Health and Human Sciences, London Metropolitan University, 166-220 Holloway Road, London N7 8D8, U.K., Forschungsneutronenquelle Heinz Maier-Leibnitz (FRM-II), Technische Universität München, D-85747 Garching, Germany, CNR-ISTM, Istituto di Scienze e Tecnologie Molecolari, via C. Golgi 19, 20133 Milano, Italy, and Lehrstuhl für Chemische Physik und Materialwissenschaften, Universität
| | - Peter Sirsch
- Department of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, N.B. E3B 5A3, Canada, Department of Health and Human Sciences, London Metropolitan University, 166-220 Holloway Road, London N7 8D8, U.K., Forschungsneutronenquelle Heinz Maier-Leibnitz (FRM-II), Technische Universität München, D-85747 Garching, Germany, CNR-ISTM, Istituto di Scienze e Tecnologie Molecolari, via C. Golgi 19, 20133 Milano, Italy, and Lehrstuhl für Chemische Physik und Materialwissenschaften, Universität
| | - Nicholas P. Chatterton
- Department of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, N.B. E3B 5A3, Canada, Department of Health and Human Sciences, London Metropolitan University, 166-220 Holloway Road, London N7 8D8, U.K., Forschungsneutronenquelle Heinz Maier-Leibnitz (FRM-II), Technische Universität München, D-85747 Garching, Germany, CNR-ISTM, Istituto di Scienze e Tecnologie Molecolari, via C. Golgi 19, 20133 Milano, Italy, and Lehrstuhl für Chemische Physik und Materialwissenschaften, Universität
| | - Andreas Ostermann
- Department of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, N.B. E3B 5A3, Canada, Department of Health and Human Sciences, London Metropolitan University, 166-220 Holloway Road, London N7 8D8, U.K., Forschungsneutronenquelle Heinz Maier-Leibnitz (FRM-II), Technische Universität München, D-85747 Garching, Germany, CNR-ISTM, Istituto di Scienze e Tecnologie Molecolari, via C. Golgi 19, 20133 Milano, Italy, and Lehrstuhl für Chemische Physik und Materialwissenschaften, Universität
| | - Carlo Gatti
- Department of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, N.B. E3B 5A3, Canada, Department of Health and Human Sciences, London Metropolitan University, 166-220 Holloway Road, London N7 8D8, U.K., Forschungsneutronenquelle Heinz Maier-Leibnitz (FRM-II), Technische Universität München, D-85747 Garching, Germany, CNR-ISTM, Istituto di Scienze e Tecnologie Molecolari, via C. Golgi 19, 20133 Milano, Italy, and Lehrstuhl für Chemische Physik und Materialwissenschaften, Universität
| | - Sandra Altmannshofer
- Department of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, N.B. E3B 5A3, Canada, Department of Health and Human Sciences, London Metropolitan University, 166-220 Holloway Road, London N7 8D8, U.K., Forschungsneutronenquelle Heinz Maier-Leibnitz (FRM-II), Technische Universität München, D-85747 Garching, Germany, CNR-ISTM, Istituto di Scienze e Tecnologie Molecolari, via C. Golgi 19, 20133 Milano, Italy, and Lehrstuhl für Chemische Physik und Materialwissenschaften, Universität
| | - Verena Herz
- Department of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, N.B. E3B 5A3, Canada, Department of Health and Human Sciences, London Metropolitan University, 166-220 Holloway Road, London N7 8D8, U.K., Forschungsneutronenquelle Heinz Maier-Leibnitz (FRM-II), Technische Universität München, D-85747 Garching, Germany, CNR-ISTM, Istituto di Scienze e Tecnologie Molecolari, via C. Golgi 19, 20133 Milano, Italy, and Lehrstuhl für Chemische Physik und Materialwissenschaften, Universität
| | - Georg Eickerling
- Department of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, N.B. E3B 5A3, Canada, Department of Health and Human Sciences, London Metropolitan University, 166-220 Holloway Road, London N7 8D8, U.K., Forschungsneutronenquelle Heinz Maier-Leibnitz (FRM-II), Technische Universität München, D-85747 Garching, Germany, CNR-ISTM, Istituto di Scienze e Tecnologie Molecolari, via C. Golgi 19, 20133 Milano, Italy, and Lehrstuhl für Chemische Physik und Materialwissenschaften, Universität
| | - Wolfgang Scherer
- Department of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, N.B. E3B 5A3, Canada, Department of Health and Human Sciences, London Metropolitan University, 166-220 Holloway Road, London N7 8D8, U.K., Forschungsneutronenquelle Heinz Maier-Leibnitz (FRM-II), Technische Universität München, D-85747 Garching, Germany, CNR-ISTM, Istituto di Scienze e Tecnologie Molecolari, via C. Golgi 19, 20133 Milano, Italy, and Lehrstuhl für Chemische Physik und Materialwissenschaften, Universität
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Sanz P, Mó O, Yáñez M, Elguero J. The effects of C by N replacement on the hydrogen bonding of malonaldehyde: N-formylformimidic acid, N-(hydroxymethyl)formamide and related compounds. Phys Chem Chem Phys 2009; 11:762-9. [DOI: 10.1039/b815827d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Jiang N, Ma J. Theoretical study of proton encircling modes in proton sponges with tetraamido/diamino quaternized macrocycles: the role of π-conjugated and aliphatic bridges. Phys Chem Chem Phys 2009; 11:5100-9. [DOI: 10.1039/b821127b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Farrugia LJ, Evans C, Lentz D, Roemer M. The QTAIM Approach to Chemical Bonding Between Transition Metals and Carbocyclic Rings: A Combined Experimental and Theoretical Study of (η5-C5H5)Mn(CO)3, (η6-C6H6)Cr(CO)3, and (E)-{(η5-C5H4)CF═CF(η5-C5H4)}(η5-C5H5)2Fe2. J Am Chem Soc 2008; 131:1251-68. [DOI: 10.1021/ja808303j] [Citation(s) in RCA: 142] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Louis J. Farrugia
- WestCHEM, Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, Scotland, U.K., and Institut für Chemie - Anorganische und Analytische Chemie, Fachbereich Biologie, Chemie, Pharmazie, Freie Universität, D-14195 Berlin, Germany
| | - Cameron Evans
- WestCHEM, Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, Scotland, U.K., and Institut für Chemie - Anorganische und Analytische Chemie, Fachbereich Biologie, Chemie, Pharmazie, Freie Universität, D-14195 Berlin, Germany
| | - Dieter Lentz
- WestCHEM, Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, Scotland, U.K., and Institut für Chemie - Anorganische und Analytische Chemie, Fachbereich Biologie, Chemie, Pharmazie, Freie Universität, D-14195 Berlin, Germany
| | - Max Roemer
- WestCHEM, Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, Scotland, U.K., and Institut für Chemie - Anorganische und Analytische Chemie, Fachbereich Biologie, Chemie, Pharmazie, Freie Universität, D-14195 Berlin, Germany
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Fillaux F, Cousson A, Archilla JFR, Tomkinson J. A neutron scattering study of strong-symmetric hydrogen bonds in potassium and cesium hydrogen bistrifluoroacetates: Determination of the crystal structures and of the single-well potentials for protons. J Chem Phys 2008; 128:204502. [DOI: 10.1063/1.2927353] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Flierler U, Burzler M, Leusser D, Henn J, Ott H, Braunschweig H, Stalke D. Elektronendichteuntersuchung der Metall-Metall-Bindung im zweikernigen “Borylen”-Komplex [{Cp(CO)2Mn}2(μ-BtBu)]. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200705257] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Flierler U, Burzler M, Leusser D, Henn J, Ott H, Braunschweig H, Stalke D. Electron-Density Investigation of Metal–Metal Bonding in the Dinuclear “Borylene” Complex [{Cp(CO)2Mn}2(μ-BtBu)]. Angew Chem Int Ed Engl 2008; 47:4321-5. [DOI: 10.1002/anie.200705257] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Sanz P, Mó O, Yañez M, Elguero J. Resonance-assisted hydrogen bonds: a critical examination. Structure and stability of the enols of beta-diketones and beta-enaminones. J Phys Chem A 2007; 111:3585-91. [PMID: 17429952 DOI: 10.1021/jp067514q] [Citation(s) in RCA: 126] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The characteristics of the intramolecular hydrogen bond (IMHB) for a series of 40 different enols of beta-diketones and their nitrogen counterparts have been systematically analyzed at the B3LYP/6-311+G(3df,2p)//B3LYP/6-311+G(d,p) level of theory. In some cases, two tautomers may exist which are interconnected by a hydrogen shift through the IMHB. In tautomer a the HB donor group (YH) is attached to the six-membered ring, while in tautomer b the HB acceptor (X) is the one that is attached to the six-membered ring. We found that changing an O to a N favors the a tautomer when the atom is endo and the contrary when it is exo, while the presence of a double bond favors the a tautomers. As expected, the OH group behaves as a better HB donor than the NH2 group and the C=NH group as a better HB acceptor than the C=O group, although the first effect clearly dominates. Accordingly, the expected IMHB strength follows the [donor, acceptor] trend: [OH, C=NH] > [OH, C=O] > [NH2, C=NH] > [NH2, C=O]. For all those compounds in which the functionality exhibiting the IMHB is unsaturated (I-type), the IMHB is much stronger than in their saturated counterparts (II-type). However, when the systems of the II-type subset, which are saturated, are constrained to have the HB donor and the HB acceptor lying in the same plane and at the same distance as in the corresponding unsaturated analogue, the IMHB is of similar or even larger strength. Hence, we conclude that, at least for this series of unsaturated compounds, the resonance-assisted hydrogen bond effect is not the primary reason behind the strength of their IMHBs, which is simply a consequence of the structure of the sigma-skeleton of the system that keeps the HB donor and the HB acceptor coplanar and closer to each other.
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Affiliation(s)
- Pablo Sanz
- Departamento de Química, C-9, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
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