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Evaluating Performance of the Approximate 3D-RISM-KH Molecular Solvation Theory for Solvation Free Energies in Alkanes and Alkane-Water Partition Coefficients. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
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2
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Falkowska M, Bowron DT, Manyar HG, Hardacre C, Youngs TGA. Neutron Scattering of Aromatic and Aliphatic Liquids. Chemphyschem 2016; 17:2043-55. [PMID: 26990367 PMCID: PMC4999024 DOI: 10.1002/cphc.201600149] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Indexed: 11/06/2022]
Abstract
Organic solvents, such as cyclohexane, cyclohexene, methylcyclohexane, benzene and toluene, are widely used as both reagents and solvents in industrial processes. Despite the ubiquity of these liquids, the local structures that govern the chemical properties have not been studied extensively. Herein, we report neutron diffraction measurements on liquid cyclohexane, cyclohexene, methylcyclohexane, benzene and toluene at 298 K to obtain a detailed description of the local structure in these compounds. The radial distribution functions of the centres of the molecules, as well as the partial distribution functions for the double bond for cyclohexene and methyl group for methylcyclohexane and toluene have been calculated. Additionally, probability density functions and angular radial distribution functions were extracted to provide a full description of the local structure within the chosen liquids. Structural motifs are discussed and compared for all liquids, referring specifically to the functional group and aromaticity present in the different liquids.
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Affiliation(s)
- Marta Falkowska
- STFC ISIS Facility, Rutherford Appleton Laboratory, Harwell, Oxford, Didcot, Oxon, OX11 0QX, UK.,CenTACat, School of Chemistry and Chemical Engineering, Queen's University, Belfast, Stranmillis Road, BT9 5AG, UK
| | - Daniel T Bowron
- STFC ISIS Facility, Rutherford Appleton Laboratory, Harwell, Oxford, Didcot, Oxon, OX11 0QX, UK
| | - Haresh G Manyar
- CenTACat, School of Chemistry and Chemical Engineering, Queen's University, Belfast, Stranmillis Road, BT9 5AG, UK
| | - Christopher Hardacre
- CenTACat, School of Chemistry and Chemical Engineering, Queen's University, Belfast, Stranmillis Road, BT9 5AG, UK.
| | - Tristan G A Youngs
- STFC ISIS Facility, Rutherford Appleton Laboratory, Harwell, Oxford, Didcot, Oxon, OX11 0QX, UK.
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Funnell NP, Dove MT, Goodwin AL, Parsons S, Tucker MG. Local structure correlations in plastic cyclohexane--a reverse Monte Carlo study. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2013; 25:454204. [PMID: 24140965 DOI: 10.1088/0953-8984/25/45/454204] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Two solid phases of cyclohexane have been investigated over a temperature range spanning 13-266 K on a powdered, perdeuterated sample using neutron total scattering. Phase II has an ordered structure (C2/c) that forms below 186 K. Between 186 and 280 K it exists as a plastic solid-phase I (Fm3m), where the molecules are rotationally disordered about the lattice points of the face-centred cubic cell. Data-dependent atomistic configurations that represent the 'instantaneous' crystal structure have been generated from the total scattering data using reverse Monte Carlo refinement. Analysis of the local structure reveals that instantaneous distortions in phase I resemble the average structure of phase II.
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Affiliation(s)
- Nicholas P Funnell
- EaStChem and Centre for Science at Extreme Conditions, University of Edinburgh, West Mains Road, Edinburgh EH9 3JJ, UK. Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, UK
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A study of cyclohexane, piperidine and morpholine with X-ray diffraction and molecular simulations. J Mol Liq 2008. [DOI: 10.1016/j.molliq.2007.10.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Katayama M, Ashiki S, Ozutsumi K. Analysis of Liquid Structure without Construction of Any Structure Models by the X-Ray Scattering Method. ANAL SCI 2007; 23:929-36. [PMID: 17690423 DOI: 10.2116/analsci.23.929] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A simple approach for determining a liquid structure using X-ray scattering data, in which a liquid structure is uniquely evaluated without construction of any plausible structure models, has been applied to liquid acetonitrile, acetone and cyclohexane. For a pair of molecules, a given point within a molecule is located at the origin with a given molecular orientation. The site of the given point of another molecule is defined by the polar coordinates and the molecular orientation is treated by three Eulerian angles. These parameters are optimized by a non-linear least-squares calculation applied to X-ray scattering data. The reliability of the method was examined by determining the liquid structure of polar acetonitrile and the obtained intermolecular interatomic distances are in good agreement with the previously reported values. The method was then successfully applied to the determination of the liquid structure of acetone and cyclohexane. Especially for nonpolar cyclohexane, the construction of a variety of plausible structural models is very difficult. It was revealed that acetone has an ordered liquid arrangement similar to that found in its crystal, although the intermolecular distances in liquid acetone are different from those in the crystal. On the other hand, the liquid structure of cyclohexane is disordered.
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Affiliation(s)
- Misaki Katayama
- Department of Applied Chemistry, Faculty of Science and Engineering, Ritsumeikan University, Kusatsu, Japan
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Reis H, Papadopoulos MG, Grzybowski A. Computer Simulation of the Linear and Nonlinear Optical Susceptibilities of p-Nitroaniline in Cyclohexane, 1,4-Dioxane, and Tetrahydrofuran in Quadrupolar Approximation. II. Local Field Effects and Optical Susceptibilitities. J Phys Chem B 2006; 110:18537-52. [PMID: 16970482 DOI: 10.1021/jp063529c] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This is the second part of a study to elucidate the local field effects on the nonlinear optical properties of p-nitroaniline (pNA) in three solvents of different multipolar character, that is, cyclohexane (CH), 1,4-dioxane (DI), and tetrahydrofuran (THF), employing a discrete description of the solutions. By the use of liquid structure information from molecular dynamics simulations and molecular properties computed by high-level ab initio methods, the local field and local field gradients on p-nitroaniline and the solvent molecules are computed in quadrupolar approximation. To validate the simulations and the induction model, static and dynamic (non)linear properties of the pure solvents are also computed. With the exception of the static dielectric constant of pure THF, a good agreement between computed and experimental refractive indices, dielectric constants, and third harmonic generation signals is obtained for the solvents. For the solutions, it is found that multipole moments up to two orders higher than quadrupole have a negligible influence on the local fields on pNA, if a simple distribution model is employed for the electric properties of pNA. Quadrupole effects are found to be nonnegligible in all three solvents but are especially pronounced in the 1,4-dioxane solvent, in which the local fields are similar to those in THF, although the dielectric constant of DI is 2.2 and that of the simulated THF is 5.4. The electric-field-induced second harmonic generation (EFISH) signal and the hyper-Rayleigh scattering signal of pNA in the solutions computed with the local field are in good to fair agreement with available experimental results. This confirms the effect of the "dioxane anomaly" also on nonlinear optical properties. Predictions based on an ellipsoidal Onsager model as applied by experimentalists are in very good agreement with the discrete model predictions. This is in contrast to a recent discrete reaction field calculation of pNA in 1,4-dioxane, which found that the predicted first hyperpolarizability of pNA deviated strongly from the predictions obtained using Onsager-Lorentz local field factors.
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Affiliation(s)
- H Reis
- Institute of Organic and Pharmaceutical Chemistry, National Hellenic Research Foundation, Vasileos Constantinou 48, GR-11635 Athens, Greece.
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Paur-Afshari R, Lin J, Schultz RH. An Unusual Solvent Isotope Effect in the Reaction of W(CO)5(solv) (solv = Cyclohexane or Cyclohexane-d12) with THF. Organometallics 2000. [DOI: 10.1021/om990828y] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Riki Paur-Afshari
- Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - J. Lin
- Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel
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Schmitz H, Faller R, Müller-Plathe F. Molecular Mobility in Cyclic Hydrocarbons: A Simulation Study. J Phys Chem B 1999. [DOI: 10.1021/jp990761s] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Heiko Schmitz
- Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany
| | - Roland Faller
- Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany
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Bakó I, Pálinkás G, Dore JC, Fischer HE. Structural studies of a water/dioxane mixture by neutron diffraction with hydrogen/deuterium substitution. Chem Phys Lett 1999. [DOI: 10.1016/s0009-2614(99)00079-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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BAKÓ IMRE, PÁLINKÁS GABOR, DORE JOHN, FISCHER HENRY. Investigation of liquid 1,4-dioxane: an X-ray and neutron diffraction study. Mol Phys 1999. [DOI: 10.1080/00268979909483011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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W. Neilson G, K. Adya A. Chapter 4. Neutron diffraction studies on liquids. ACTA ACUST UNITED AC 1997. [DOI: 10.1039/pc093101] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Farman H, Coveney F, Dore J, Bellissent-Funel MC. Structural studies of cyclohexane C 6D 12by neutron diffraction. Mol Phys 1996. [DOI: 10.1080/00268979600100811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Dore J. Orientational correlations in molecular systems: A diffraction perspective. J Mol Liq 1992. [DOI: 10.1016/0167-7322(92)80037-i] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Brodka A, Zerda TW. Molecular dynamics simulation of liquid–solid phase transition of cyclohexane. I. J Chem Phys 1992. [DOI: 10.1063/1.463775] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Farman H, O'mard L, Dore J, Bellissent-Funel MC. Structural studies of cyclohexane, C6D12, by neutron diffraction. Mol Phys 1991. [DOI: 10.1080/00268979100101611] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Razafitianamaharavo A, Convert P, Coulomb J, Croset B, Dupont-Pavlovsky N. Structure of C6H12 films on graphite. ACTA ACUST UNITED AC 1989. [DOI: 10.1051/jphys:0198900500200313300] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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