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Morrelli D, Guerra JG, Kumar P, Bajwa B, Krishnan V, Maitra S. Role of solvent dielectric constant on the enthalpy-entropy compensation in the hindered amide bond rotation. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bavisotto R, Hopper N, Boscoboinik A, Owen Q, Tysoe WT. Infrared spectroscopic measurements of the structure of organic thin films; furfural on Pd(111) and Au(111) surfaces. CrystEngComm 2021. [DOI: 10.1039/d1ce00565k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
This work demonstrates the use of reflection–adsorption infrared spectroscopy for continually monitoring the structure of organic thin films as a function of thickness and temperature to complement diffraction methods.
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Affiliation(s)
- Robert Bavisotto
- Department of Chemistry and Biochemistry
- University of Wisconsin-Milwaukee
- Milwaukee
- USA
| | - Nicholas Hopper
- Department of Chemistry and Biochemistry
- University of Wisconsin-Milwaukee
- Milwaukee
- USA
| | - Alejandro Boscoboinik
- Department of Chemistry and Biochemistry
- University of Wisconsin-Milwaukee
- Milwaukee
- USA
| | - Quintus Owen
- Department of Chemistry and Biochemistry
- University of Wisconsin-Milwaukee
- Milwaukee
- USA
| | - Wilfred T. Tysoe
- Department of Chemistry and Biochemistry
- University of Wisconsin-Milwaukee
- Milwaukee
- USA
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3
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Wang F, Islam S, Backler F. Probing Intramolecular Interaction of Stereoisomers Using Computational Spectroscopy. Aust J Chem 2020. [DOI: 10.1071/ch19453] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Several model stereoisomers such as ferrocene (Fc), methoxyphenol, and furfural conformers are discussed. It was discovered that the Fc IR spectroscopic band(s) below 500cm−1 serve as fingerprints for eclipsed (splitting 17 (471–488)cm−1) and staggered Fc (splitting is ~2 (459–461)cm−1) in the gas phase. It is revealed that in the gas phase the dominance of the eclipsed Fc (D5h) at very low temperatures changes to a mixture of both eclipsed and staggered Fc when the temperature increases. However, in solvents such as CCl4, eclipsed Fc dominates at room temperature (300K) due to the additional solvation energy. Intramolecular interactions of organic model compounds such as methoxyphenols (guaiacol (GUA) and mequinol (MEQ)) and furfural, ionization energies such as the carbon 1s (core C1s), as well as valence binding energy spectra serve this purpose well. Hydrogen bonding alters the C1s binding energies of the methoxy carbon (C(7)) of anti-syn and anti-gauche conformers of GUA to 292.65 and 291.91eV, respectively. The trans and cis MEQ conformers, on the other hand, are nearly energy degenerate, whereas their dipole moments are significantly different: 2.66 Debye for cis and 0.63 Debye for trans-MEQ. Moreover, it is found that rotation around the Cring–OH and the Cring–OCH3 bonds differ in energy barrier height by ~0.50 kcal⋅mol−1. The Dyson orbital momentum profiles of the most different ionic states, 25a′ (0.35eV) and 3a′ (−0.33eV), between cis and trans-MEQ in outer valence space (which is measurable using electron momentum spectroscopy (EMS)), exhibit quantitative differences. Finally, the molecular switch from trans and cis-furfural engages with a small energy difference of 0.74 kcal mol−1, however, at the calculated C(3)(–H⋅⋅⋅O=C) site the C1s binding energy difference is 0.105eV (2.42 kcal mol−1) and the NMR chemical shift of the same carbon site is also significant; 7.58ppm from cis-furfural without hydrogen bonding.
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Umar Y, Tijani J. Density functional theory study of the rotational barriers, conformational preference, and vibrational spectra of 2-formylfuran and 3-formylfuran. J STRUCT CHEM+ 2016. [DOI: 10.1134/s0022476615070112] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Ababneh-Khasawneh M, Fortier-McGill BE, Occhionorelli ME, Bain AD. Solvent Effects on Chemical Exchange in a Push–Pull Ethylene as Studied by NMR and Electronic Structure Calculations. J Phys Chem A 2011; 115:7531-7. [PMID: 21627168 DOI: 10.1021/jp201885q] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Blythe E. Fortier-McGill
- Department of Chemistry, McMaster University, 1280 Main St. West, Hamilton, Ontario, Canada L8S 4M1
| | - Marzia E. Occhionorelli
- Department of Chemistry, McMaster University, 1280 Main St. West, Hamilton, Ontario, Canada L8S 4M1
| | - Alex D. Bain
- Department of Chemistry, McMaster University, 1280 Main St. West, Hamilton, Ontario, Canada L8S 4M1
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Peverati R, Baldridge KK. Implementation and Optimization of DFT-D/COSab with Respect to Basis Set and Functional: Application to Polar Processes of Furfural Derivatives in Solution. J Chem Theory Comput 2009; 5:2772-86. [DOI: 10.1021/ct900363n] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Roberto Peverati
- University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Kim K. Baldridge
- University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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Ashish H, Ramasami P. Rotational barrier and thermodynamical parameters of furfural, thiofurfural, and selenofurfural in the gas and solution phases: theoretical study based on density functional theory method. Mol Phys 2008. [DOI: 10.1080/00268970701881196] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Boeré RT, Bond AM, Cronin S, Duffy NW, Hazendonk P, Masuda JD, Pollard K, Roemmele TL, Tran P, Zhang Y. Photophysical, dynamic and redox behavior of tris(2,6-diisopropylphenyl)phosphine. NEW J CHEM 2008. [DOI: 10.1039/b709602j] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Matchett SA, Zhang G, Frattarelli D. Measurement of Olefin Bond Rotation Barriers in a Series of Vinylaniline Complexes of the Cyclopentadienyliron(II) Dicarbonyl Cation and Their Correlation to Metal−Olefin Bond Asymmetry. Organometallics 2004. [DOI: 10.1021/om040092r] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Stephen A. Matchett
- Department of Chemistry, Grand Valley State University, Allendale, Michigan 49401
| | - Guirong Zhang
- Department of Chemistry, Grand Valley State University, Allendale, Michigan 49401
| | - David Frattarelli
- Department of Chemistry, Grand Valley State University, Allendale, Michigan 49401
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Li P, Bu Y, Ai H. Density Functional Studies on Conformational Behaviors of Glycinamide in Solution. J Phys Chem B 2004. [DOI: 10.1021/jp036585b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ping Li
- Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China, and Department of Chemistry, Qufu Normal University, Qufu 273165, P. R. China
| | - Yuxiang Bu
- Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China, and Department of Chemistry, Qufu Normal University, Qufu 273165, P. R. China
| | - Hongqi Ai
- Institute of Theoretical Chemistry, Shandong University, Jinan 250100, P. R. China, and Department of Chemistry, Qufu Normal University, Qufu 273165, P. R. China
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Fu Y, Zhou Z, Hazendonk P, Bain AD, Fronczek FR, Escobedo J, McLaughlin ML, Hammer RP. Solution and solid structure of a boc-protected piperidine-spiro-hydantoin as studied by two-dimensional NMR and X-ray crystallography. J Mol Struct 2004. [DOI: 10.1016/j.molstruc.2003.09.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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12
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Crespo-Otero R, Montero LA, Rosquete G, Padrón-García JA, González-Jonte RH. Theoretical model of internal rotation in monosubstituted derivatives of furfural. J Comput Chem 2003; 25:429-38. [PMID: 14696077 DOI: 10.1002/jcc.10393] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The present work explores the effect of substitution in all free positions of furfural on conformational preferences of formyl group by using ab-initio calculations at the MP2/6-31G(p,d) level of theory. Theoretical modeling was made in vacuo. The selected substituents were -CH(3), NH(2), NO(2) and F groups in 3, 4, 5 and ipso carbonyl positions. Geometries of all derivatives were analyzed and it is ascertained that substitution has not important consequences on furan ring geometry. Differences of energy between OO-cis and trans conformers and energy barriers between them are described and extreme cases are explained. Interesting features appear in the cases of -NH(2) and -NO(2) groups, and particularly when the 3 and ipso carbonyl positions are substituted. Variations in energy barriers are correlated with variations in C2-C6 distances for the transition states and planar forms. Substitution effect on Mülliken charges are analyzed and related with internal rotation energy barriers and differences between conformers.
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Affiliation(s)
- Rachel Crespo-Otero
- Laboratorio de Química Computacional y Teórica, Facultad de Química, Universidad de La Habana, La Habana 10400, Cuba
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Chen F, Chipman DM. Boundary element methods for dielectric cavity construction and integration. J Chem Phys 2003. [DOI: 10.1063/1.1615232] [Citation(s) in RCA: 15] [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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Rivelino R, Coutinho K, Canuto S. A Monte Carlo-Quantum Mechanics Study of the Solvent-Induced Spectral Shift and the Specific Role of Hydrogen Bonds in the Conformational Equilibrium of Furfural in Water. J Phys Chem B 2002. [DOI: 10.1021/jp026318q] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Roberto Rivelino
- Instituto de Física, Universidade de São Paulo, CP 66318, 05315-970 São Paulo, SP, Brazil
| | - Kaline Coutinho
- CIIB, Universidade de Mogi das Cruzes, CP 411, 08701-970 Mogi das Cruzes, SP, Brazil
| | - Sylvio Canuto
- Instituto de Física, Universidade de São Paulo, CP 66318, 05315-970 São Paulo, SP, Brazil
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Muhandiram DR, Kiel GY, Aarts GHM, Saez IM, Reuvers JGA, Heinekey DM, Graham WAG, Takats J, McClung RED. Multisite Magnetization Transfer Studies of Metal Migration in (η3-C7H7)Re(CO)4, (η3-C7H7)Os(CO)3SnPh3, (η3-C7H7)Re(CO)3PMe3, (η5-C7H7)Re(CO)3, (η5-C7H7)Fe(CO)2SnPh3, (η5-C7H7)Os(CO)2SnPh3, and (η5-C7H7)Ru(CO)2SnPh3. Organometallics 2002. [DOI: 10.1021/om011061o] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- D. R. Muhandiram
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - G.-Y. Kiel
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - G. H. M. Aarts
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - I. M. Saez
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - J. G. A. Reuvers
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - D. M. Heinekey
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - W. A. G. Graham
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - J. Takats
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - R. E. D. McClung
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
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Siebert HC, Tajkhorshid E, Dabrowski J. Barrier to Rotation around the Csp2-Csp2 Bond of the Ketoaldehyde Enol Ether MeC(O)CHCH−OEt As Determined by 13C NMR and ab Initio Calculations. J Phys Chem A 2001. [DOI: 10.1021/jp004476g] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hans-Christian Siebert
- Bijvoet Center for Biomolecular Research, Department of Bio-Organic Chemistry, Utrecht University, P.O. Box 80.075, NL-3508 TB Utrecht, The Netherlands, Department of Molecular Biophysics, German Cancer Research Center, Im Neuenheimer Feld 280, D-69120 Heidelberg, Germany, and Max Planck Institute for Medical Research, Jahnstrasse 29, D-69120 Heidelberg, Germany
| | - Emad Tajkhorshid
- Bijvoet Center for Biomolecular Research, Department of Bio-Organic Chemistry, Utrecht University, P.O. Box 80.075, NL-3508 TB Utrecht, The Netherlands, Department of Molecular Biophysics, German Cancer Research Center, Im Neuenheimer Feld 280, D-69120 Heidelberg, Germany, and Max Planck Institute for Medical Research, Jahnstrasse 29, D-69120 Heidelberg, Germany
| | - Janusz Dabrowski
- Bijvoet Center for Biomolecular Research, Department of Bio-Organic Chemistry, Utrecht University, P.O. Box 80.075, NL-3508 TB Utrecht, The Netherlands, Department of Molecular Biophysics, German Cancer Research Center, Im Neuenheimer Feld 280, D-69120 Heidelberg, Germany, and Max Planck Institute for Medical Research, Jahnstrasse 29, D-69120 Heidelberg, Germany
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Baldridge KK, Jonas V, Bain AD. Ground state gas and solution phase conformational dynamics of polar processes: Furfural systems. J Chem Phys 2000. [DOI: 10.1063/1.1313790] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Lounila J, Hiltunen Y, Tuppurainen K, Pulkkinen A, Laatikainen R. Solvent dependence of rotational energetics and formyl-proton long-range spin-spin coupling behavior of 2,6-dichloro- and 2,6-dinitrobenzaldehydes using dipolar couplings and temperature dependence of long-range couplings. CAN J CHEM 1999. [DOI: 10.1139/v99-198] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The formyl rotational energetics, solvent effects on the energetics and formyl-proton spin-spin coupling behavior of 2,6-dichlorobenzaldehyde were studied by using dipolar couplings analysis and the temperature dependence of the spin-spin couplings. The general form of the rotational potential was taken from molecular mechanics and the conjugative sin2 Θ-type component (where Θ is the formyl-ring dihedral angle) was then optimized using the dipolar couplings obtained by analyzing 1H NMR and 13C proton satellite spectra in a liquid crystal solvent. The optimization based on the dipolar couplings gave the following rotational free energy potential: V(Θ) = 4.5 cos6 Θ + 10.7 (± 2.0) sin2 Θ, in kJ/mol. The analysis based on the temperature dependence of 6J data allowed estimation of solvent effects on the potential. For example, the potentials in acetone and in acetonitrile differ by a 1.0 sin2 2Θ (in kJ/mol). The chloroform solvent effect can be described by term of -1.0 cos6 Θ. When the formyl-proton six-bond coupling data was fit, assuming it obeyed the expression 6J(Θ) = 6J90 sin2 Θ + 6J0 and assuming 6J0 = 0.015 Hz, the analysis yielded 6J90 of -0.48 (± 0.03) Hz. The scalar coupling temperature dependence method was applied also to the conformational analysis of 2,6-dinitrobenzaldehyde.Key words: spin-spin coupling, dipolar coupling, solvent effect, rotational barrier, benzaldehyde.
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Cramer CJ, Truhlar DG. Implicit Solvation Models: Equilibria, Structure, Spectra, and Dynamics. Chem Rev 1999; 99:2161-2200. [PMID: 11849023 DOI: 10.1021/cr960149m] [Citation(s) in RCA: 1727] [Impact Index Per Article: 69.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christopher J. Cramer
- Department of Chemistry and Supercomputer Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431
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