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Hayashi N, Ujihara T, Ikeda H. Contrasting roles of bond orbital interactions contributing to conformational stabilities of flavan-3-ol structures. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2021.113362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Joyce JP, Shores MP, Rappè AK. Protobranching as repulsion-induced attraction: a prototype for geminal stabilization. Phys Chem Chem Phys 2020; 22:16998-17006. [PMID: 32676632 DOI: 10.1039/d0cp02193h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Noncovalent interactions are traditionally defined within the context of their attractive components, such as electrostatics and dispersion. Sources of molecular strain are derived through the destabilization of Coulombic and exchange repulsion. Due to this binary designation, the underlying origin of geminal stability with respect to alkanes (referred to as protobranching) has been an active subject for debate between these competing perspectives. We recast this stabilization as a complementary (Gestalt) interaction between dispersion and exchange repulsion, each impacting the other. We use triplet hydrogen and argon dimer as foundational van der Waals adducts to develop a procedure for the visualization and quantification of both exchange repulsion, ΔρSCF, and medium-range correlation, ΔΔρ, as perturbations in electron density. We use the framework of the DFT-D3 correction to reproduce the shape of the dispersion potential at medium range and successfully model the trend in stability for the eighteen isomers of octane with a diverse series of functionals: BLYP, B3LYP, BP86, PBE, and PBE0. Collectively, our findings show that protobranching is a manifestation of steric repulsion-reduction in vibrational enthalpy and medium-range electron correlation.
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Affiliation(s)
- Justin P Joyce
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA.
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3
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Interpretation of anomeric effect in 2-hydroxytetrahydropyrans based on extensive bond interactions. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130919] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Hayashi N, Ujihara T, Ikeda H. Effect of bond orbital interactions on the conformational stabilities of 1,2-difluoroethane and 2,3-difluorobutanes. Tetrahedron 2019. [DOI: 10.1016/j.tet.2018.12.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Hayashi N, Ujihara T, Ikeda H. Effect of Orbital Interactions between Vicinal Bonds and between Hydroxy Groups on the Conformational Stabilities of 1,2-Ethanediol and 2,3-Butanediols. J Phys Chem A 2017; 121:8484-8494. [DOI: 10.1021/acs.jpca.7b08085] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nobuyuki Hayashi
- Food
Research Institute, National Agriculture and Food Research Organization (NARO), 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan
| | - Tomomi Ujihara
- Food
Research Institute, National Agriculture and Food Research Organization (NARO), 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan
| | - Hirotaka Ikeda
- Materials
Science Department, MOLSIS Inc., 1-28-38 Shinkawa, Chuo-ku, Tokyo 104-0033, Japan
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Orbital phase design of diradicals. Top Curr Chem (Cham) 2016. [PMID: 21279576 DOI: 10.1007/128_2008_29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Over the last three decades the rational design of diradicals has been a challenging issue because of their special features and activities in organic reactions and biological processes. The orbital phase theory has been developed for understanding the properties of diradicals and designing new candidates for synthesis. The orbital phase is an important factor in promoting the cyclic orbital interaction. When all of the conditions: (1) the electron-donating orbitals are out of phase; (2) the accepting orbitals are in phase; and (3) the donating and accepting orbitals are in phase, are simultaneously satisfied, the system is stabilized by the effective delocalization and polarization. Otherwise, the system is less stable. According to the orbital phase continuity requirement, we can predict the spin preference of π-conjugated diradicals and relative stabilities of constitutional isomers. Effects of the intramolecular interaction of bonds and unpaired electrons on the spin preference, thermodynamic and kinetic stabilities of the singlet and triplet states of localized 1,3-diradicals were also investigated by orbital phase theory. Taking advantage of the ring strains, several monocyclic and bicyclic systems were designed with appreciable singlet preference and kinetic stabilities. Substitution effects on the ground state spin and relative stabilities of diradicals were rationalized by orbital interactions without loss of generality. Orbital phase predictions were supported by available experimental observations and sophisticated calculation results. In comparison with other topological models, the orbital phase theory has some advantages. Orbital phase theory can provide a general model for both π-conjugated and localized diradicals. The relative stabilities and spin preference of all kinds of diradicals can be uniformly rationalized by the orbital phase property. The orbital phase theory is applied to the conformations of diradicals and the geometry-dependent behaviors. The insights gained from the orbital phase theory are useful in a rational design of stable 1,3-diradicals.
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Abstract
This Review article deals with the synthesis and properties of inorganic hydrocarbon analogues: binary chemical species that contain heavier Group 14 elements (Si, Ge, Sn or Pb) and hydrogen as components. Rapid advances in our general knowledge of these species have enabled the development of industrially relevant processes such as the hydrosilylation of unsaturated substrates and the chemical vapor deposition of semi-conducting films.
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Affiliation(s)
- Eric Rivard
- Department of Chemistry
- University of Alberta
- Edmonton
- Canada
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McKee WC, Schleyer PVR. Correlation Effects on the Relative Stabilities of Alkanes. J Am Chem Soc 2013; 135:13008-14. [DOI: 10.1021/ja403934s] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- William C. McKee
- Center for
Computational Chemistry and Department of
Chemistry, University of Georgia, Athens,
Georgia 30602, United States
| | - Paul von Ragué Schleyer
- Center for
Computational Chemistry and Department of
Chemistry, University of Georgia, Athens,
Georgia 30602, United States
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MENG YAN, TIAN CHUANJIN, WANG FENGTING, WANG ZHIGANG, JIN MINGXING, CHEN LEI, FENG WEI, DING DAJUN. HYPERCONJUGATION EFFECT ON THE STRUCTURAL STABILITY OF A TERT-BUTYL AND ITS DERIVED C4Hn(n = 4–10) ISOMERS. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2012. [DOI: 10.1142/s0219633612500812] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The hyperconjugation effect on molecular structural stability is studied by performing first-principles calculations on the tert-butyl and its derived C 4 H n(n = 4–10) isomer structures. Four of the isomer structures with n = 7–10 were found to show hyperconjugation similar to that in the tert-butyl, with hyperconjugation orbital energies decreasing with the increase of the number of hydrogen atoms participating in the hyperconjugation (PIH). The distribution of charge carried by the PIH hydrogen atoms is uniform, which reveals a delocalization character in the electronic structures; and the PIH hydrogen atoms are found responsible for the main IR spectrum peak relating to C-H stretching vibration.
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Affiliation(s)
- YAN MENG
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China
| | - CHUANJIN TIAN
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, P. R. China
| | - FENGTING WANG
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China
| | - ZHIGANG WANG
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China
| | - MINGXING JIN
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China
| | - LEI CHEN
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, Jilin University, Changchun, 130012, P. R. China
| | - WEI FENG
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China
| | - DAJUN DING
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, P. R. China
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Assessment of density functionals on intramolecular dispersion interaction in large normal alkanes. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.05.067] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Inagaki S, Murai H, Takeuchi T. Theory of electron localization and its application to blue-shifting hydrogen bonds. Phys Chem Chem Phys 2012; 14:2008-14. [DOI: 10.1039/c2cp23047j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Thermal [3,3]-rearrangement of 1,1-disubstituted allyl carboxylates: lone pair participation and the geminal bond participation. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.06.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Affiliation(s)
- Satoshi Inagaki
- Dapartment of Chemistry, Faculty of Engineering, Gifu University, Yanagido, Gifu, 501-1193, Japan,
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Groves M, Chan A, Malardier-Jugroot C, Jugroot M. Improving platinum catalyst binding energy to graphene through nitrogen doping. Chem Phys Lett 2009. [DOI: 10.1016/j.cplett.2009.09.074] [Citation(s) in RCA: 125] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Wang Y, Ma J, Inagaki S. Stable silicon-centered localized singlet 1,3-diradicals XSi(GeY2)2SiX: theoretical predictions. J PHYS ORG CHEM 2007. [DOI: 10.1002/poc.1221] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Naruse Y, Fukasawa S, Ota S, Deki A, Inagaki S. Geminal bond participation in the uncatalyzed Mukaiyama aldol reaction. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2006.11.149] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Grimme S. Seemingly Simple Stereoelectronic Effects in Alkane Isomers and the Implications for Kohn–Sham Density Functional Theory. Angew Chem Int Ed Engl 2006; 45:4460-4. [PMID: 16739150 DOI: 10.1002/anie.200600448] [Citation(s) in RCA: 308] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Stefan Grimme
- Theoretische Organische Chemie, Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany.
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Grimme S. Scheinbar einfache stereo-elektronische Effekte in Alkan-Isomeren und ihre Auswirkungen für die Kohn-Sham-Dichtefunktionaltheorie. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200600448] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Takeuchi K, Uemura D, Inagaki S. Structure, Strain, and Degenerate Rearrangement of Tricyclo[2.1.0.0]pentasilane and Related Molecules. J Phys Chem A 2005; 109:8632-6. [PMID: 16834263 DOI: 10.1021/jp052777q] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We theoretically investigate a highly strained tricyclic silane (tricyclo[2.1.0.0 1,3]pentasilane (4b), an isomer of pentasila[1.1.1]propellane (3b)) composed of three fused three-membered rings. The central ring is distorted. One of the fusion bonds in the central ring is shorter than the normal Si-Si single bond (2.350 A) whereas the other is as long as the fusion bonds in bicyclo[1.1.0]tetrasilane (2b) (2.860 A) and 3b (2.778 A). The tricyclic silane is less strained than the carbon congener and more strained than the isomer 3b. The electron delocalization between one of the fusion bonds and the geminal Si-Si ring bonds elongates the fusion bond and stabilizes the molecules to reduce the strain. The silanes composed of the fused three-membered rings are less strained than the carbon congener. A degenerate rearrangement of a three-membered ring is predicted. The enthalpy of activation of the rearrangement of the distorted central ring is low (7.2 kcal/mol) for 4b, but appreciable (22.3 kcal/mol) for the germanium congener, tricyclo[2.1.0.0(1,3)]pentagermane (4c). We investigate the effects of the substituents on the distortion of the central three-membered ring and the degenerate rearrangement.
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Affiliation(s)
- Kunihiro Takeuchi
- Department of Chemistry, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
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Wang Y, Ma J, Inagaki S. Theoretical design of singlet localized σ-diradicals: C(MH2)3C (M=Si, Ge, Sn, Pb). Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.06.064] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Takeuchi K, Horiguchi A, Inagaki S. Highly strained tricyclic molecules: tricyclo[p.q.0.01,f]alkanes and phosphatricyclo[m.1.0.01,3]alkanes. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.01.066] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Xu Z, Vanka K, Ziegler T. Influence of the Counterion MeB(C6F5)3- and Solvent Effects on Ethylene Polymerization Catalyzed by [(CpSiMe2NR)TiMe]+: A Combined Density Functional Theory and Molecular Mechanism Study. Organometallics 2003. [DOI: 10.1021/om0341202] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhitao Xu
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4
| | - Kumar Vanka
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4
| | - Tom Ziegler
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4
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Naruse Y, Ma J, Inagaki S. σ and π Relaxation of Strain in Three-Membered Ring Molecules (CH2)2X, (NH)2X, and (SiH2)2X (X = SiH2, PH, S). J Phys Chem A 2003. [DOI: 10.1021/jp0210677] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuji Naruse
- Department of Chemistry, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan, and Department of Chemistry, Nanjing University, Nanjing 210093, People's Republic of China
| | - Jing Ma
- Department of Chemistry, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan, and Department of Chemistry, Nanjing University, Nanjing 210093, People's Republic of China
| | - Satoshi Inagaki
- Department of Chemistry, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan, and Department of Chemistry, Nanjing University, Nanjing 210093, People's Republic of China
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Naruse Y, Inagaki S, Kano N, Nakagawa N, Kawashima T. Hypercoordination to a saturated carbon atom. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)01204-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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30
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Ma J, Hozaki A, Inagaki S. Pentagon stability: cyclic delocalization of lone pairs through sigma conjugation and design of polycyclophosphanes. Inorg Chem 2002; 41:1876-82. [PMID: 11925183 DOI: 10.1021/ic0107835] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The orbital-phase theory was applied to propose pentagon stability in a well-defined manner. Cyclic delocalization of the lone pair electrons on the five-membered ring atoms through the vicinal sigma bonds was shown to be favored by the orbital-phase properties. The pentagon stability was found to be outstanding in saturated phosphorus five-membered rings in the puckered conformation, and was substantiated by the negative strain energy of cyclopentaphosphane, P(5)H(5) (3). The relative increments of the remarkable increase in the strain energies of protonation on the different atoms in the most stable conformers supported the significance of the cyclic delocalization of the lone pairs. Pentagon stability led to the design of three novel polycyclic phosphanes, P(12)H(4) (18), P(13)H(3) (19), and P(14)H(2) (20), with low strain energies due to many puckered pentagon units in them. The low stability of the dodecahedron P(20) (22) was suggested by the high strain energy due to its planar pentagon units. The pentagon stability is less significant in the saturated nitrogen ring molecules due to the greater energy gap between the n and sigma orbitals.
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Affiliation(s)
- Jing Ma
- Department of Chemistry, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
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