1
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Czernek J, Brus J, Czerneková V. A computational inspection of the dissociation energy of mid-sized organic dimers. J Chem Phys 2022; 156:204303. [DOI: 10.1063/5.0093557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The gas-phase value of the dissociation energy ( D0) is a key parameter employed in both experimental and theoretical descriptions of noncovalent complexes. The D0 data were obtained for a set of mid-sized organic dimers in their global minima which was located using geometry optimizations that applied ample basis sets together with either the conventional second-order Møller–Plesset (MP2) method or several dispersion-corrected density-functional theory (DFT-D) schemes. The harmonic vibrational zero-point (VZP) and deformation energies from the MP2 calculations were combined with electronic energies from the coupled cluster theory with singles, doubles, and iterative triples [CCSD(T)] extrapolated to the complete basis set (CBS) limit to estimate D0 with the aim of inspecting values that were most recently measured, and an analogous comparison was performed using the DFT-D data. In at least one case (namely, for the aniline⋯methane cluster), the D0 estimate that employed the CCSD(T)/CBS energies differed from experiment in the way that could not be explained by a possible deficiency in the VZP contribution. Curiously, one of the DFT-D schemes (namely, the B3LYP-D3/def2-QZVPPD) was able to reproduce all measured D0 values to within 1.0 kJ/mol from experimental error bars. These findings show the need for further measurements and computations of some of the complexes. In order to facilitate such studies, the physical nature of intermolecular interactions in the investigated dimers was analyzed by means of the DFT-based symmetry-adapted perturbation theory.
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Affiliation(s)
- Jiří Czernek
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovsky Square 2, 162 06 Praha 6, The Czech Republic
| | - Jiří Brus
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovsky Square 2, 162 06 Praha 6, The Czech Republic
| | - Vladimíra Czerneková
- Institute of Physics, Czech Academy of Sciences, Na Slovance 2, 182 21 Praha 8, The Czech Republic
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2
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Gottschalk HC, Poblotzki A, Fatima M, Obenchain DA, Pérez C, Antony J, Auer AA, Baptista L, Benoit DM, Bistoni G, Bohle F, Dahmani R, Firaha D, Grimme S, Hansen A, Harding ME, Hochlaf M, Holzer C, Jansen G, Klopper W, Kopp WA, Krasowska M, Kröger LC, Leonhard K, Mogren Al-Mogren M, Mouhib H, Neese F, Pereira MN, Prakash M, Ulusoy IS, Mata RA, Suhm MA, Schnell M. The first microsolvation step for furans: New experiments and benchmarking strategies. J Chem Phys 2020; 152:164303. [DOI: 10.1063/5.0004465] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Hannes C. Gottschalk
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstr. 6, 37077 Göttingen, Germany
| | - Anja Poblotzki
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstr. 6, 37077 Göttingen, Germany
| | - Mariyam Fatima
- Deutsches Elektronen-Synchrotron, Notkestr. 85, 22607 Hamburg, Germany
| | | | - Cristóbal Pérez
- Deutsches Elektronen-Synchrotron, Notkestr. 85, 22607 Hamburg, Germany
| | - Jens Antony
- Mulliken Center for Theoretical Chemistry, Universität Bonn, Beringstrasse 4, 53115 Bonn, Germany
| | - Alexander A. Auer
- Department of Molecular Theory and Spectroscopy, Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Leonardo Baptista
- Departamento de Química e Ambiental, Universidade do Estado do Rio de Janeiro, Faculdade de Tecnologia, Resende, RJ, Brazil
| | - David M. Benoit
- Department of Physics and Mathematics, E. A. Milne Centre for Astrophysics and G. W. Gray Centre for Advanced Materials Chemistry, University of Hull, Hull HU6 7RX, United Kingdom
| | - Giovanni Bistoni
- Department of Molecular Theory and Spectroscopy, Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Fabian Bohle
- Mulliken Center for Theoretical Chemistry, Universität Bonn, Beringstrasse 4, 53115 Bonn, Germany
| | - Rahma Dahmani
- Université Gustave Eiffel, COSYS/LISIS, 5 Blvd. Descartes, 77454 Marne-La-Vallée, France
| | - Dzmitry Firaha
- Lehrstuhl für Technische Thermodynamik, RWTH Aachen University, 52062 Aachen, Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Universität Bonn, Beringstrasse 4, 53115 Bonn, Germany
| | - Andreas Hansen
- Mulliken Center for Theoretical Chemistry, Universität Bonn, Beringstrasse 4, 53115 Bonn, Germany
| | - Michael E. Harding
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Majdi Hochlaf
- Université Gustave Eiffel, COSYS/LISIS, 5 Blvd. Descartes, 77454 Marne-La-Vallée, France
| | - Christof Holzer
- Theoretical Chemistry Group, Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), P.O. Box 6980, 76049 Karlsruhe, Germany
| | - Georg Jansen
- Fakultät für Chemie, Universität Duisburg-Essen, Universitätsstr. 5, 45117 Essen, Germany
| | - Wim Klopper
- Theoretical Chemistry Group, Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), P.O. Box 6980, 76049 Karlsruhe, Germany
| | - Wassja A. Kopp
- Lehrstuhl für Technische Thermodynamik, RWTH Aachen University, 52062 Aachen, Germany
| | - Małgorzata Krasowska
- Department of Molecular Theory and Spectroscopy, Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Leif C. Kröger
- Lehrstuhl für Technische Thermodynamik, RWTH Aachen University, 52062 Aachen, Germany
| | - Kai Leonhard
- Lehrstuhl für Technische Thermodynamik, RWTH Aachen University, 52062 Aachen, Germany
| | - Muneerah Mogren Al-Mogren
- Chemistry Department, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Kingdom of Saudi Arabia
| | - Halima Mouhib
- Université Gustave Eiffel, COSYS/LISIS, 5 Blvd. Descartes, 77454 Marne-La-Vallée, France
| | - Frank Neese
- Department of Molecular Theory and Spectroscopy, Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Max N. Pereira
- Departamento de Química e Ambiental, Universidade do Estado do Rio de Janeiro, Faculdade de Tecnologia, Resende, RJ, Brazil
| | - Muthuramalingam Prakash
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India
| | - Inga S. Ulusoy
- Theoretical Chemistry, Institute of Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
| | - Ricardo A. Mata
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstr. 6, 37077 Göttingen, Germany
| | - Martin A. Suhm
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstr. 6, 37077 Göttingen, Germany
| | - Melanie Schnell
- Deutsches Elektronen-Synchrotron, Notkestr. 85, 22607 Hamburg, Germany
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3
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Knochenmuss R, Sinha RK, Leutwyler S. Benchmark Experimental Gas-Phase Intermolecular Dissociation Energies by the SEP-R2PI Method. Annu Rev Phys Chem 2020; 71:189-211. [DOI: 10.1146/annurev-physchem-050317-014224] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The gas-phase ground-state dissociation energy D0( S0) of an isolated and cold bimolecular complex is a fundamental measure of the intermolecular interaction strength between its constituents. Accurate D0 values are important for the understanding of intermolecular bonding, for benchmarking high-level theoretical calculations, and for the parameterization of dispersion-corrected density functionals or force-field models that are used in fields ranging from crystallography to biochemistry. We review experimental measurements of the gas-phase D0( S0) and D0( S1) values of 55 different M⋅S complexes, where M is a (hetero)aromatic molecule and S is a closed-shell solvent atom or molecule. The experiments employ the triply resonant SEP-R2PI laser method, which involves M-centered ( S0 → S1) electronic excitation, followed by S1 → S0 stimulated emission spanning a range of S0 state vibrational levels. At sufficiently high vibrational energy, vibrational predissociation of the M⋅S complex occurs. A total of 49 dissociation energies were bracketed to within ≤1.0 kJ/mol, providing a large experimental database of accurate noncovalent interactions.
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Affiliation(s)
- Richard Knochenmuss
- Department of Chemistry and Biochemistry, University of Bern, 3012 Bern, Switzerland
| | - Rajeev K. Sinha
- Department of Atomic and Molecular Physics, Manipal University, Manipal, Karnataka 576104, India
| | - Samuel Leutwyler
- Department of Chemistry and Biochemistry, University of Bern, 3012 Bern, Switzerland
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4
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Makuvaza JT, Kokkin DL, Loman JL, Reid SA. C-H/π and C-H-O Interactions in Concert: A Study of the Anisole-Methane Complex using Resonant Ionization and Velocity Mapped Ion Imaging. J Phys Chem A 2019; 123:2874-2880. [PMID: 30860841 DOI: 10.1021/acs.jpca.9b01020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Noncovalent forces such as hydrogen bonding, halogen bonding, π-π stacking, and C-H/π and C-H/O interactions hold the key to such chemical processes as protein folding, molecular self-assembly, and drug-substrate interactions. Invaluable insight into the nature and strength of these forces continues to come from the study of isolated molecular clusters. In this work, we report on a study of the isolated anisole-methane complex, where both C-H/π and C-H/O interactions are possible, using a combination of theory and experiments that include mass-selected two-color resonant two-photon ionization spectroscopy, two-color appearance potential (2CAP) measurements, and velocity mapped ion imaging (VMI). Using 2CAP and VMI, we derive the binding energies of the complex in ground, excited, and cation radical states. The experimental values from the two methods are in excellent agreement, and they are compared with selected theoretical values calculated using density functional theory and ab initio methods. The optimized ground-state cluster geometry, which is consistent with the experimental observations, shows methane sitting above the ring, interacting with anisole via both C-H/π and C-H/O interactions, and this dual mode of interaction is reflected in a larger ground-state binding energy as compared with the prototypical benzene-methane system.
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Affiliation(s)
- James T Makuvaza
- Department of Chemistry , Marquette University , Milwaukee , Wisconsin 53233 , United States
| | - Damian L Kokkin
- Department of Chemistry , Marquette University , Milwaukee , Wisconsin 53233 , United States
| | - John L Loman
- Department of Chemistry , Marquette University , Milwaukee , Wisconsin 53233 , United States
| | - Scott A Reid
- Department of Chemistry , Marquette University , Milwaukee , Wisconsin 53233 , United States
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5
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Singh S, Sunoj RB. Computational asymmetric catalysis: On the origin of stereoselectivity in catalytic reactions. ADVANCES IN PHYSICAL ORGANIC CHEMISTRY 2019. [DOI: 10.1016/bs.apoc.2019.07.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kokkin D, Ivanov M, Loman J, Cai JZ, Uhler B, Reilly N, Rathore R, Reid SA. π - π stacking vs. C-H/ π interaction: Excimer formation and charge resonance stabilization in van der Waals clusters of 9,9'-dimethylfluorene. J Chem Phys 2018; 149:134314. [PMID: 30292228 DOI: 10.1063/1.5044648] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Studies of exciton and hole stabilization in multichromophoric systems underpin our understanding of electron transfer and transport in materials and biomolecules. The simplest model systems are dimeric, and recently we compared the gas-phase spectroscopy and dynamics of van der Waals dimers of fluorene, 9-methylfluorene (MF), and 9,9'-dimethylfluorene (F1) to assess how sterically controlled facial encumbrance modulates the dynamics of excimer formation and charge resonance stabilization (CRS). Dimers of fluorene and MF show only excimer emission upon electronic excitation, and significant CRS as evidenced in a reduced ionization potential for the dimer relative the monomer. By contrast, the dimer of F1 shows no excimeric emission, rather structured emission from the locally excited state of a tilted (non π-stacked) dimer, evidencing the importance of C-H/π interactions and increased steric constraints that restrict a cofacial approach. In this work, we report our full results on van der Waals clusters of F1, using a combination of theory and experiments that include laser-induced fluorescence, mass-selected two-color resonant two-photon ionization spectroscopy, and two-color appearance potential measurements. We use the latter to derive the binding energies of the F1 dimer in ground, excited, and cation radical states. Our results are compared with van der Waals and covalently linked clusters of fluorene to assess both the relative strength of π-stacking and C-H/π interactions in polyaromatic assemblies and the role of π-stacking in excimer formation and CRS.
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Affiliation(s)
- Damian Kokkin
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53233, USA
| | - Maxim Ivanov
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53233, USA
| | - John Loman
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53233, USA
| | - Jin-Zhe Cai
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53233, USA
| | - Brandon Uhler
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53233, USA
| | - Neil Reilly
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53233, USA
| | - Rajendra Rathore
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53233, USA
| | - Scott A Reid
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53233, USA
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7
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Kokkin D, Ivanov MV, Loman J, Cai JZ, Rathore R, Reid SA. Strength of π-Stacking, from Neutral to Cation: Precision Measurement of Binding Energies in an Isolated π-Stacked Dimer. J Phys Chem Lett 2018; 9:2058-2061. [PMID: 29630843 DOI: 10.1021/acs.jpclett.8b00742] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
π-Stacking interactions are ubiquitious across chemistry and biochemistry, impacting areas from organic materials and photovoltaics to biochemistry and DNA. However, experimental data is lacking regarding the strength of π-stacking forces-an issue not settled even for the simplest model system, the isolated benzene dimer. Here, we use two-color appearance potential measurements to determine the binding energies of the isolated, π-stacked dimer of fluorene (C13H10) in ground, excited, and ionic states. Our measurements provide the first precise values for π-stacking interaction energies in these states, which are key benchmarks for theory. Indeed, theoretical predictions using ab initio and carefully benchmarked DFT methods are in excellent agreement with experiment.
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Affiliation(s)
- Damian Kokkin
- Department of Chemistry , Marquette University , Milwaukee , Wisconsin 53233 , United States
| | - Maxim V Ivanov
- Department of Chemistry , Marquette University , Milwaukee , Wisconsin 53233 , United States
| | - John Loman
- Department of Chemistry , Marquette University , Milwaukee , Wisconsin 53233 , United States
| | - Jin-Zhe Cai
- Department of Chemistry , Marquette University , Milwaukee , Wisconsin 53233 , United States
| | - Rajendra Rathore
- Department of Chemistry , Marquette University , Milwaukee , Wisconsin 53233 , United States
| | - Scott A Reid
- Department of Chemistry , Marquette University , Milwaukee , Wisconsin 53233 , United States
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8
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Mata RA, Suhm MA. Benchmarking Quantum Chemical Methods: Are We Heading in the Right Direction? Angew Chem Int Ed Engl 2017; 56:11011-11018. [PMID: 28452424 PMCID: PMC5582598 DOI: 10.1002/anie.201611308] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 12/20/2016] [Indexed: 11/15/2022]
Abstract
Theoreticians and experimentalists should work together more closely to establish reliable rankings and benchmarks for quantum chemical methods. Comparison to carefully designed experimental benchmark data should be a priority. Guidelines to improve the situation for experiments and calculations are proposed.
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Affiliation(s)
- Ricardo A. Mata
- Institut für Physikalische ChemieUniversität GöttingenTammannstrasse 637077GöttingenGermany
| | - Martin A. Suhm
- Institut für Physikalische ChemieUniversität GöttingenTammannstrasse 637077GöttingenGermany
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9
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Mata RA, Suhm MA. Quantenchemische Methoden im Leistungsvergleich: Stimmt die Richtung noch? Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611308] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ricardo A. Mata
- Institut für Physikalische Chemie; Universität Göttingen; Tammannstraße 6 37077 Göttingen Deutschland
| | - Martin A. Suhm
- Institut für Physikalische Chemie; Universität Göttingen; Tammannstraße 6 37077 Göttingen Deutschland
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10
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Kumar S, Singh SK, Vaishnav JK, Hill JG, Das A. Interplay among Electrostatic, Dispersion, and Steric Interactions: Spectroscopy and Quantum Chemical Calculations of π-Hydrogen Bonded Complexes. Chemphyschem 2017; 18:828-838. [PMID: 28124829 DOI: 10.1002/cphc.201601405] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 01/24/2017] [Indexed: 11/07/2022]
Abstract
π-Hydrogen bonding interactions are ubiquitous in both materials and biology. Despite their relatively weak nature, great progress has been made in their investigation by experimental and theoretical methods, but this becomes significantly more complicated when secondary intermolecular interactions are present. In this study, the effect of successive methyl substitution on the supramolecular structure and interaction energy of indole⋅⋅⋅methylated benzene (ind⋅⋅⋅n-mb, n=1-6) complexes is probed through a combination of supersonic jet experiments and benchmark-quality quantum chemical calculations. It is demonstrated that additional secondary interactions introduce a subtle interplay among electrostatic and dispersion forces, as well as steric repulsion, which fine-tunes the overall structural motif. Resonant two-photon ionization and IR-UV double-resonance spectroscopy techniques are used to probe jet-cooled ind⋅⋅⋅n-mb (n=2, 3, 6) complexes, with redshifting of the N-H IR stretching frequency showing that increasing the degree of methyl substitution increases the strength of the primary N-H⋅⋅⋅π interaction. Ab initio harmonic frequency and binding energy calculations confirm this trend for all six complexes. Electronic spectra of the three dimers are broad and structureless, with quantum chemical calculations revealing that this is likely to be due to multiple tilted conformations of each dimer possessing similar stabilization energies.
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Affiliation(s)
- Sumit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India.,Present address: Department of Dynamics at Surfaces, Max Planck Institute of Biophysical Chemistry, Am Faßberg 11, 37077, Gottingen, Germany
| | - Santosh K Singh
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Jamuna K Vaishnav
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India.,Present address: Indian Institute of Technology (IIT) Indore, Khandwa Rd, Simrol, Madhya, Pradesh, 452020, India
| | - J Grant Hill
- Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, UK
| | - Aloke Das
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
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11
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Hostaš J, Sigwalt D, Šekutor M, Ajani H, Dubecký M, Řezáč J, Zavalij PY, Cao L, Wohlschlager C, Mlinarić-Majerski K, Isaacs L, Glaser R, Hobza P. A Nexus between Theory and Experiment: Non-Empirical Quantum Mechanical Computational Methodology Applied to Cucurbit[n
]uril⋅Guest Binding Interactions. Chemistry 2016; 22:17226-17238. [DOI: 10.1002/chem.201601833] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Indexed: 12/25/2022]
Affiliation(s)
- Jiří Hostaš
- Institute of Organic Chemistry and Biochemistry; Flemingovo náměstí 2 Prague 6 160 10 Czech Republic
- Department of Physical and Macromolecular Chemistry; Faculty of Science; Charles University in Prague; Albertov 6 12843 Prague Czech Republic
| | - David Sigwalt
- Department of Chemistry and Biochemistry; University of Maryland; College Park MD 20742 USA
| | - Marina Šekutor
- Department of Organic Chemistry and Biochemistry; Ruđer Bošković Institute; Bijenička cesta 54 10000 Zagreb Croatia
| | - Haresh Ajani
- Institute of Organic Chemistry and Biochemistry; Flemingovo náměstí 2 Prague 6 160 10 Czech Republic
- Regional Centre of Advanced Technologies and Materials; Department of Physical Chemistry; Palacký University; 77146 Olomouc Czech Republic
| | - Matúš Dubecký
- Regional Centre of Advanced Technologies and Materials; Department of Physical Chemistry; Palacký University; 77146 Olomouc Czech Republic
| | - Jan Řezáč
- Institute of Organic Chemistry and Biochemistry; Flemingovo náměstí 2 Prague 6 160 10 Czech Republic
| | - Peter Y. Zavalij
- Department of Chemistry and Biochemistry; University of Maryland; College Park MD 20742 USA
| | - Liping Cao
- Department of Chemistry and Biochemistry; University of Maryland; College Park MD 20742 USA
| | | | - Kata Mlinarić-Majerski
- Department of Organic Chemistry and Biochemistry; Ruđer Bošković Institute; Bijenička cesta 54 10000 Zagreb Croatia
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry; University of Maryland; College Park MD 20742 USA
| | - Robert Glaser
- Institut für Organische Chemie; Johannes Kepler Universität Linz; 4040 Linz Austria), Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105 (Israel
| | - Pavel Hobza
- Institute of Organic Chemistry and Biochemistry; Flemingovo náměstí 2 Prague 6 160 10 Czech Republic
- Regional Centre of Advanced Technologies and Materials; Department of Physical Chemistry; Palacký University; 77146 Olomouc Czech Republic
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12
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Malongwe JK, Nachtigallová D, Corrochano P, Klán P. Spectroscopic Properties of Anisole at the Air-Ice Interface: A Combined Experimental-Computational Approach. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:5755-5764. [PMID: 27243785 DOI: 10.1021/acs.langmuir.6b01187] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A combined experimental and computational approach was used to investigate the spectroscopic properties of anisole in aqueous solutions and at the ice-air interface in the temperature range of 77-298 K. The absorption, diffuse reflectance, and emission spectra of ice samples containing anisole prepared by different techniques, such as slow freezing (frozen aqueous solutions), shock freezing (ice grains), or anisole vapor deposition on ice grains, were measured to evaluate changes in the contaminated ice matrix that occur at different temperatures. It was found that the position of the lowest absorption band of anisole and its tail shift bathochromically by ∼4 nm in frozen samples compared to liquid aqueous solutions. On the other hand, the emission spectra of aqueous anisole solutions were found to fundamentally change upon freezing. While one emission band (∼290 nm) was observed under all circumstances, the second band at ∼350 nm, assigned to an anisole excimer, appeared only at certain temperatures (150-250 K). Its disappearance at lower temperatures is attributed to the formation of crystalline anisole on the ice surface. DFT and ADC(2) calculations were used to interpret the absorption and emission spectra of anisole monomer and dimer associates. Various stable arrangements of the anisole associates were found at the disordered water-air interface in the ground and excited states, but only those with a substantial overlap of the aromatic rings are manifested by the emission band at ∼350 nm.
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Affiliation(s)
| | - Dana Nachtigallová
- Institute of Organic Chemistry and Biochemistry, Flemingovo nam. 2, 166 10 Prague, Czech Republic
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13
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Frey JA, Holzer C, Klopper W, Leutwyler S. Experimental and Theoretical Determination of Dissociation Energies of Dispersion-Dominated Aromatic Molecular Complexes. Chem Rev 2016; 116:5614-41. [DOI: 10.1021/acs.chemrev.5b00652] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jann A. Frey
- Departement
für Chemie und Biochemie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - Christof Holzer
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, D-76131 Karlsruhe, Germany
| | - Wim Klopper
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, D-76131 Karlsruhe, Germany
| | - Samuel Leutwyler
- Departement
für Chemie und Biochemie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
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14
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Silva NJ, Machado FBC, Lischka H, Aquino AJA. π–π stacking between polyaromatic hydrocarbon sheets beyond dispersion interactions. Phys Chem Chem Phys 2016; 18:22300-10. [DOI: 10.1039/c6cp03749f] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A slipped parallel structure of a stacked graphene flake showing a biconcave curvature.
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Affiliation(s)
- Nadeesha J. Silva
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock Texas 79409
- USA
| | | | - Hans Lischka
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock Texas 79409
- USA
- Institute for Theoretical Chemistry
| | - Adelia J. A. Aquino
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock Texas 79409
- USA
- School of Pharmaceutical Sciences and Technology
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15
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Yoshida T, Hayashi T, Mashima A, Sasahara K, Chuman H. A simple and efficient dispersion correction to the Hartree–Fock theory (3): A comprehensive performance comparison of HF-Dtq with MP2 and DFT-Ds. Bioorg Med Chem Lett 2016; 26:589-593. [DOI: 10.1016/j.bmcl.2015.11.061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 11/14/2015] [Accepted: 11/19/2015] [Indexed: 11/25/2022]
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Gottschalk HC, Altnöder J, Heger M, Suhm MA. Ringmethylierung kontrolliert die Wasserstoffbrücken-Andockstelle bei Anisol. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508481] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hannes C. Gottschalk
- Institut für Physikalische Chemie; Georg-August-Universität Göttingen; Tammannstraße 6 37077 Göttingen Deutschland
| | - Jonas Altnöder
- Institut für Physikalische Chemie; Georg-August-Universität Göttingen; Tammannstraße 6 37077 Göttingen Deutschland
| | - Matthias Heger
- Institut für Physikalische Chemie; Georg-August-Universität Göttingen; Tammannstraße 6 37077 Göttingen Deutschland
| | - Martin A. Suhm
- Institut für Physikalische Chemie; Georg-August-Universität Göttingen; Tammannstraße 6 37077 Göttingen Deutschland
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Gottschalk HC, Altnöder J, Heger M, Suhm MA. Control over the Hydrogen-Bond Docking Site in Anisole by Ring Methylation. Angew Chem Int Ed Engl 2015; 55:1921-4. [DOI: 10.1002/anie.201508481] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 10/31/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Hannes C. Gottschalk
- Institut für Physikalische Chemie; Georg-August-Universität Göttingen; Tammannstraße 6 37077 Göttingen Deutschland
| | - Jonas Altnöder
- Institut für Physikalische Chemie; Georg-August-Universität Göttingen; Tammannstraße 6 37077 Göttingen Deutschland
| | - Matthias Heger
- Institut für Physikalische Chemie; Georg-August-Universität Göttingen; Tammannstraße 6 37077 Göttingen Deutschland
| | - Martin A. Suhm
- Institut für Physikalische Chemie; Georg-August-Universität Göttingen; Tammannstraße 6 37077 Göttingen Deutschland
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Seidel RW, Goddard R. Anisole at 100 K: the first crystal structure determination. Acta Crystallogr C Struct Chem 2015; 71:664-6. [PMID: 26243411 DOI: 10.1107/s2053229615012553] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Accepted: 06/30/2015] [Indexed: 11/10/2022] Open
Abstract
The simplest alkyl aryl ether, anisole (methoxybenzene), C7H8O, is a feedstock chemical and is widely used in the pharmaceutical industry. The structure of anisole at 100 K, as determined by single-crystal X-ray analysis, is reported. A crystal (m.p. 236 K) suitable for X-ray diffraction was obtained from the melt. The title compound crystallizes in the centrosymmetric space group P2(1)/c with two molecules in the asymmetric unit (Z' = 2). Both crystallographically distinct molecules adopt a virtually flat (Cs-symmetric) conformation. The arrangement of the molecules in the solid state appears to be governed by close packing. No face-to-face π-π stacking of the molecules is observed, but rather edge-to-face interactions result in a herringbone packing motif.
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Affiliation(s)
- Rüdiger W Seidel
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Richard Goddard
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
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