1
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Afonin AV, Rusinska-Roszak D. Guide to tuning the chalcone molecular properties based on the push-pull effect energy scale created via the molecular tailoring approach. J Comput Chem 2022; 43:631-643. [PMID: 35175632 DOI: 10.1002/jcc.26827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/23/2022] [Accepted: 02/03/2022] [Indexed: 12/18/2022]
Abstract
Using the molecular tailoring approach, a total energy scale for the push-pull effect in the range from -40 to 100 kcal/mol is created for the wide series of neutral, charged and doubly charged compounds on the chalcone platform. Taking into account similar energy scale for hydrogen bonds, the strength of the push-pull effect is ranked in the seven categories, ranging from negative (anti-push-pull) to very weak and very strong push-pull effect. It is demonstrated that the molecular properties of chalcone can be tuned prior synthesis due to the created energy scale for the push-pull effect. The single bonds of the π-spacer in the chalcones are shortened, the double ones are lengthened, and the C=O bond vibrations are red shifted when the push-pull effect is enhanced along the energy scale. The HOMO and LUMO energies change systematically while the HOMO-LUMO energy gap narrows as the strength of the push-pull effect increases.
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Affiliation(s)
- Andrei V Afonin
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Division of Russian Academy of Sciences, Irkutsk, Russia
| | - Danuta Rusinska-Roszak
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Poznan, Poland
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2
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Cao C, Zeng Z, Cao C. A new insight into the push‐pull effect of substituents via the stilbene‐like model compounds. J PHYS ORG CHEM 2022. [DOI: 10.1002/poc.4319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Chaotun Cao
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan China
| | - Zhao Zeng
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan China
| | - Chenzhong Cao
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan China
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3
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Cao C, Yan L, Cao C, Qu J. Influence of substituent and push‐pull effect on the chemical shifts of the carbon in bridging bond of 1‐furyl/thienyl‐2‐arylethylene. J PHYS ORG CHEM 2020. [DOI: 10.1002/poc.4160] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Chao‐tun Cao
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan Hunan Province China
| | - Lu Yan
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan Hunan Province China
| | - Chenzhong Cao
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan Hunan Province China
| | - Junyan Qu
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan Hunan Province China
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4
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A Study of Polarization and Directing Effects of Unsymmetrical Alkynes Using Regioselective Pd-Catalyzed Bromoallylation. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901476] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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5
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Afonin AV, Rusinska-Roszak D. A molecular tailoring approach – a new guide to quantify the energy of push–pull effects: a case study on (E)-3-(1H-pyrrol-2-yl)prop-2-enones. Phys Chem Chem Phys 2020; 22:22190-22194. [DOI: 10.1039/d0cp04432f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We report a new approach to quantify the push–pull effect in molecules with internal charge transfer.
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Affiliation(s)
- Andrei V. Afonin
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Division of Russian Academy of Sciences
- Irkutsk 664033
- Russian Federation
| | - Danuta Rusinska-Roszak
- Institute of Chemical Technology and Engineering
- Poznan University of Technology
- Poznan 60-965
- Poland
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6
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Honacker C, Kappelt B, Jabłoński M, Hepp A, Layh M, Rogel F, Uhl W. Aluminium Functionalized Germanes: Intramolecular Activation of Ge–H Bonds, Formation of a Dihydrogen Bond and Facile Hydrogermylation of Unsaturated Substrates. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900543] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Christian Honacker
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
| | - Benedikt Kappelt
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
| | - Mirosław Jabłoński
- Department of Quantum Chemistry Faculty of Chemistry Nicolaus Copernicus University in Toruń 7, Gagarina St. 87‐100 Toruń Poland
| | - Alexander Hepp
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
| | - Marcus Layh
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
| | - Friedhelm Rogel
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
| | - Werner Uhl
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
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Uhl W, Tolzmann M, Willeke K, Honacker C, Hepp A, Layh M, Würthwein E. Silicon–Halogen Bond Activation in Mixed Si/Al Compounds and an Approach to Intramolecular Stabilized Silylium Ions. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801273] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Werner Uhl
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
- Organisch‐Chemisches Institut and Center for Multiscale Theory and Computation (CMTC) Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Michael Tolzmann
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
| | - Kira Willeke
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
| | - Christian Honacker
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
| | - Alexander Hepp
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
| | - Marcus Layh
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
| | - Ernst‐Ulrich Würthwein
- Organisch‐Chemisches Institut and Center for Multiscale Theory and Computation (CMTC) Universität Münster Corrensstraße 40 48149 Münster Germany
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Uhl W, Honacker C, Lawrence N, Hepp A, Schürmann L, Layh M. Hydroalumination of Oligoalkynylgermanes and -digermanes - Reactions with Heterocumulenes by Al-C or Ge-C Bond Activation and Formation of a Hexazenedialuminum Complex. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800159] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Werner Uhl
- Institut für Anorganische und Analytische Chemie; Universität Münster; Corrensstraße 30 48149 Münster Germany
| | - Christian Honacker
- Institut für Anorganische und Analytische Chemie; Universität Münster; Corrensstraße 30 48149 Münster Germany
| | - Neil Lawrence
- Institut für Anorganische und Analytische Chemie; Universität Münster; Corrensstraße 30 48149 Münster Germany
| | - Alexander Hepp
- Institut für Anorganische und Analytische Chemie; Universität Münster; Corrensstraße 30 48149 Münster Germany
| | - Lina Schürmann
- Institut für Anorganische und Analytische Chemie; Universität Münster; Corrensstraße 30 48149 Münster Germany
| | - Marcus Layh
- Institut für Anorganische und Analytische Chemie; Universität Münster; Corrensstraße 30 48149 Münster Germany
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Lederle F, Meyer F, Kaldun C, Namyslo JC, Hübner EG. Sonogashira coupling in 3D-printed NMR cuvettes: synthesis and properties of arylnaphthylalkynes. NEW J CHEM 2017. [DOI: 10.1039/c6nj03614g] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A set of push–pull substituted arylnaphthylalkynes has been synthesized under inert gas conditions in 3D-printed cuvettes out of NMR-transparent polyamide and their optical properties were investigated.
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Affiliation(s)
- Felix Lederle
- Institute of Organic Chemistry
- Clausthal University of Technology
- D-38678 Clausthal-Zellerfeld
- Germany
| | - Frederick Meyer
- Institute of Organic Chemistry
- Clausthal University of Technology
- D-38678 Clausthal-Zellerfeld
- Germany
| | - Christian Kaldun
- Institute of Organic Chemistry
- Clausthal University of Technology
- D-38678 Clausthal-Zellerfeld
- Germany
| | - Jan C. Namyslo
- Institute of Organic Chemistry
- Clausthal University of Technology
- D-38678 Clausthal-Zellerfeld
- Germany
| | - Eike G. Hübner
- Institute of Organic Chemistry
- Clausthal University of Technology
- D-38678 Clausthal-Zellerfeld
- Germany
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11
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Topolovčan N, Panov I, Kotora M. Synthesis of 1,2-Disubstituted Cyclopentadienes from Alkynes Using a Catalytic Haloallylation/Cross-Coupling/Metathesis Relay. Org Lett 2016; 18:3634-7. [PMID: 27425809 DOI: 10.1021/acs.orglett.6b01682] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nikola Topolovčan
- Department of Organic Chemistry,
Faculty of Science, Charles University in Prague, Hlavova 8, 128 43 Praha 2, Czech Republic
| | - Illia Panov
- Department of Organic Chemistry,
Faculty of Science, Charles University in Prague, Hlavova 8, 128 43 Praha 2, Czech Republic
| | - Martin Kotora
- Department of Organic Chemistry,
Faculty of Science, Charles University in Prague, Hlavova 8, 128 43 Praha 2, Czech Republic
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12
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Barta P, Szatmári I, Fülöp F, Heydenreich M, Koch A, Kleinpeter E. Synthesis and stereochemistry of new naphth[1,3]oxazino[3,2-a]benzazepine and naphth[1,3]oxazino[3,2-e]thienopyridine derivatives. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.03.058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Honacker C, Qu ZW, Tannert J, Layh M, Hepp A, Grimme S, Uhl W. Functionalized alkynyl-chlorogermanes: hydrometallation, Ge-Cl bond activation, Ge-H bond formation and chlorine-tert-butyl exchange via a transient germyl cation. Dalton Trans 2016; 45:6159-74. [PMID: 26610394 DOI: 10.1039/c5dt03918e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Treatment of alkynyl-arylchlorogermanes ArylnGe(Cl)(C[triple bond, length as m-dash]C-(t)Bu)3-n (n = 1, 2) with HM(t)Bu2 (M = Al, Ga) yielded mixed Al or Ga alkenyl-alkynylchlorogermanes via hydrometallation reactions. Intramolecular interactions between the Lewis-basic Cl atoms and the Lewis-acidic Al or Ga atoms afforded MCGeCl heterocycles. The endocyclic M-Cl distances were significantly lengthened compared to the starting compounds and indicated Ge-Cl bond activation. Dual hydrometallation succeeded only with HGa(t)Bu2. One Ga atom of the product was involved in a Ga-Cl bond, while the second one had an interaction to a C-H bond of a phenyl group. In two cases treatment of chlorogermanes with two equivalents of HAl(t)Bu2 resulted in hydroalumination of one alkynyl group and formation of unprecedented Ge-H functionalized germanes, Aryl-Ge(H)(C[triple bond, length as m-dash]C-(t)Bu)[C(Al(t)Bu2)[double bond, length as m-dash]C(H)-(t)Bu] (Aryl = mesityl, triisopropylphenyl). The Al atoms of these compounds interacted with the α-C atoms of the alkynyl groups. Ph(Cl)Ge(C[triple bond, length as m-dash]C-(t)Bu)[C(Al(t)Bu2}[double bond, length as m-dash]C(H)-(t)Bu] reacted in an unusual Cl/(t)Bu exchange to yield the tert-butylgermane Ph((t)Bu)Ge(C[triple bond, length as m-dash]C-(t)Bu)[C{Al((t)Bu)(Cl)}[double bond, length as m-dash]C(H)-(t)Bu]. Quantum chemical calculations suggested the formation of a germyl cation as a transient intermediate.
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Affiliation(s)
- Christian Honacker
- Institut für Anorganische und Analytische Chemie der Universität Münster, Corrensstraße 30, D-48149 Münster, Germany.
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14
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Kleinpeter E, Krüger S, Koch A. Anisotropy Effect of Three-Membered Rings in 1H NMR Spectra: Quantification by TSNMRS and Assignment of the Stereochemistry. J Phys Chem A 2015; 119:4268-76. [DOI: 10.1021/acs.jpca.5b03078] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Erich Kleinpeter
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam (Golm), Germany
| | - Stefanie Krüger
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam (Golm), Germany
| | - Andreas Koch
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam (Golm), Germany
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15
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Kleinpeter E, Michaelis M, Koch A. Are para-nitro-pyridine N-oxides quinonoid or benzenoid? An answer given by spatial NICS (TSNMRS). Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.043] [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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16
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Uhl W, Pelties S, Tannert J, Ravoo BJ, Würthwein EU. Germacyclobutenes: generation by 1,1-carbalumination or 1,1-carbagallation and their photophysical properties. Chemistry 2015; 21:2629-37. [PMID: 25522339 DOI: 10.1002/chem.201405739] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Indexed: 11/07/2022]
Abstract
Aluminium- and gallium-functionalised alkenylalkynylgermanes, R(1) 2 Ge(C≡C-R(2) )[C{E(CMe3 )2 }=C(H)-R(2) ] (E=Al, Ga), exhibit a close contact between the coordinatively unsaturated Al or Ga atoms and the α-C atoms of the intact ethynyl groups. These interactions activate the Ge-C(alkynyl) bonds and favour the thermally induced insertion of these C atoms into the E-C(vinyl) bonds by means of 1,1-carbalumination or 1,1-carbagallation reactions. For the first time the latter method was shown to be a powerful alternative to known metallation processes. Germacyclobutenes with an unsaturated GeC3 heterocycle and endo- and exocyclic C=C bonds resulted from concomitant Ge-C bond formation to the β-C atoms of the alkynyl groups. These heterocyclic compounds show an interesting photoluminescence behaviour with Stokes shifts of >110 nm. The fascinating properties are based on extended π-delocalisation including σ*-orbitals localised at Ge and Al. High-level quantum chemical DFT and TD-DFT calculations for an Al compound were applied to elucidate their absorption and emission properties. They revealed a biradical excited state with the transfer of a π-electron into the empty p-orbital at Al and a pyramidalisation of the metal atom.
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Affiliation(s)
- Werner Uhl
- Institut für Anorganische und Analytische Chemie der Universität Münster, Corrensstraße 30, 48149 Münster (Germany), Fax: (+49) 251-8336660.
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17
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Kleinpeter E, Koch A, Schulz S, Wacker P. Interplay of para- and diatropic ring currents [(anti)aromaticity] of macrocyclic rings subject to conformational influences, further annelation and hydrogenation of aromatic ring moieties. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.10.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Kleinpeter E, Klaumünzer U. Quantification of the push–pull Effect in disubstituted alkynes – Application of occupation quotients π*/π and 13C chemical shift differences ΔδCC. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.05.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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19
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Hailmann M, Konieczka SZ, Himmelspach A, Löblein J, Reiss GJ, Finze M. Carba-closo-dodecaborate anions with two functional groups: [1-R-12-HC≡C-closo-1-CB₁₁H₁₀]⁻ (R = CN, NC, CO₂H, C(O)NH₂, NHC(O)H). Inorg Chem 2014; 53:9385-99. [PMID: 25140733 DOI: 10.1021/ic501526g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Disubstituted carba-closo-dodecaborate anions with one functional group bonded to the cluster carbon atom and one ethynyl group bonded to the antipodal boron atom were synthesized from easily accessible {closo-1-CB11} clusters. [Et4N][1-NC-12-HC≡C-closo-1-CB11H10] ([Et4N]4b) was prepared starting from Cs[12-Et3SiC≡C-closo-1-CB11H11] (Cs1c) via salts of the anions [1-HO(O)C-12-HC≡C-closo-1-CB11H10](-) (2b) and [1-H2N(O)C-12-HC≡C-closo-1-CB11H10](-) (3b). In a similar reaction sequence [Et4N][1-CN-12-HC≡C-closo-1-CB11H10] ([Et4N]7b) was obtained from Cs[1-H2N-12-HC≡C-closo-1-CB11H10] (Cs5b) by formamidation to yield [Et4N][1-H(O)CHN-12-HC≡C-closo-1-CB11H10] ([Et4N]6b) and successive dehydration. In addition, the synthesis of the isonitrile [Et4N][1-CN-closo-1-CB11H11] ([Et4N]7a) is presented. The {closo-1-CB11} derivatives were characterized by multinuclear NMR as well as vibrational spectroscopy, mass spectrometry, and elemental analysis. The crystal structures of [Et4N][1-HO(O)C-12-HC≡C-closo-1-CB11H10] ([Et4N]2b), [Et4N][1-H2N(O)C-12-HC≡C-closo-1-CB11H10] ([Et4N]3b), [Et4N][1-NC-12-HC≡C-closo-1-CB11H10] ([Et4N]4b), [Et4N][1-H(O)CHN-12-HC≡C-closo-1-CB11H10] ([Et4N]6b), [Et4N][1-CN-12-HC≡C-closo-1-CB11H10] ([Et4N]7b), and K[1-H(O)CHN-closo-1-CB11H11] ([Et4N]6a) were determined. The transmission of electronic effects through the carba-closo-dodecaboron cage was studied based on (13)C NMR spectroscopic data, by results derived from density functional theory calculations, and by a comparison to the data of related benzene and bicyclo[2.2.2]octane derivatives.
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Affiliation(s)
- Michael Hailmann
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg , Am Hubland, 97074 Würzburg, Germany
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Uhl W, Pelties S, Rohling M, Tannert J. Alkenyl-Alkynylgermanes Functionalised by Lewis Acids: Intramolecular Aluminium- and Gallium-Alkyne Interactions and Potential Ge-C Bond Activation. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402132] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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21
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Baranac-Stojanović M. New insight into the anisotropic effects in solution-state NMR spectroscopy. RSC Adv 2014. [DOI: 10.1039/c3ra45512b] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
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22
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Hailmann M, Herkert L, Himmelspach A, Finze M. Difunctionalized {closo-1-CB11} Clusters: 1- and 2-Amino-12-ethynylcarba-closo-dodecaborates. Chemistry 2013; 19:15745-58. [DOI: 10.1002/chem.201302931] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Indexed: 11/07/2022]
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Uhl W, Tannert J, Layh M, Hepp A, Grimme S, Risthaus T. Cooperative Ge–N Bond Activation in Hydrogallation Products of Alkynyl(diethylamino)germanes (Et2N)nGe(C≡CtBu)4–n. Organometallics 2013. [DOI: 10.1021/om400543v] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Werner Uhl
- Institut für Anorganische
und Analytische Chemie der Universität Münster, Corrensstraße 30, D-48149 Münster,
Germany
| | - Jens Tannert
- Institut für Anorganische
und Analytische Chemie der Universität Münster, Corrensstraße 30, D-48149 Münster,
Germany
| | - Marcus Layh
- Institut für Anorganische
und Analytische Chemie der Universität Münster, Corrensstraße 30, D-48149 Münster,
Germany
| | - Alexander Hepp
- Institut für Anorganische
und Analytische Chemie der Universität Münster, Corrensstraße 30, D-48149 Münster,
Germany
| | - Stefan Grimme
- Mulliken Center
for Theoretical Chemistry, Institut
für Physikalische und Theoretische Chemie, Universität Bonn, Beringstraße 4, D-53115 Bonn,
Germany
| | - Tobias Risthaus
- Mulliken Center
for Theoretical Chemistry, Institut
für Physikalische und Theoretische Chemie, Universität Bonn, Beringstraße 4, D-53115 Bonn,
Germany
- International NRW Graduate School of Chemistry, Wilhelm-Klemm-Straße
10, D-48149 Münster, Germany
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Bizier NP, Wackerly JW, Braunstein ED, Zhang M, Nodder ST, Carlin SM, Katz JL. An Alternative Role for Acetylenes: Activation of Fluorobenzenes toward Nucleophilic Aromatic Substitution. J Org Chem 2013; 78:5987-98. [PMID: 23692440 DOI: 10.1021/jo400668v] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Nicholas P Bizier
- Department of Chemistry, Colby College, 5754 Mayflower Hill Drive, Waterville, Maine 04901, United States
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25
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(Anti)aromaticity of dehydroannulenes of various ring size proved by the ring current effect in 1H NMR spectra. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.12.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Syntheses and conformational analyses of new naphth[1,2-e][1,3]oxazino[3,2-c]quinazolin-13-ones. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.04.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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28
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Kleinpeter E, Koch A. Antiaromaticity Proved by the Anisotropic Effect in 1H NMR Spectra. J Phys Chem A 2012; 116:5674-80. [DOI: 10.1021/jp300860q] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Erich Kleinpeter
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam
(Golm), Germany
| | - Andreas Koch
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam
(Golm), Germany
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29
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The anisotropic effect of functional groups in 1H NMR spectra is the molecular response property of spatial NICS—the frozen conformational equilibria of 9-arylfluorenes. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.06.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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30
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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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31
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Baranac-Stojanović M, Kleinpeter E. Quantification of the Aromaticity of 2-Alkylidenethiazolines Subjected to Push–Pull Activity. J Org Chem 2011; 76:3861-71. [DOI: 10.1021/jo200294f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Marija Baranac-Stojanović
- Faculty of Chemistry, University of Belgrade, Studentski trg 16, P.O. Box 158, 11000 Belgrade, Serbia
- Center for Chemistry ICTM, P.O. Box 473, 11000 Belgrade, Serbia
- Chemisches Institut der Universität Potsdam, Karl-Liebknecht Strasse 24-25, D-14476 Potsdam (Golm), Germany
| | - Erich Kleinpeter
- Chemisches Institut der Universität Potsdam, Karl-Liebknecht Strasse 24-25, D-14476 Potsdam (Golm), Germany
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32
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Standara S, Bouzková K, Straka M, Zacharová Z, Hocek M, Marek J, Marek R. Interpretation of substituent effects on 13C and 15N NMR chemical shifts in 6-substituted purines. Phys Chem Chem Phys 2011; 13:15854-64. [DOI: 10.1039/c1cp20680j] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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33
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Kleinpeter E, Lämmermann A, Kühn H. The anisotropic effect of functional groups in 1H NMR spectra is the molecular response property of spatial nucleus independent chemical shifts (NICS)—Conformational equilibria of exo/endotetrahydrodicyclopentadiene derivatives. Org Biomol Chem 2011; 9:1098-111. [DOI: 10.1039/c0ob00356e] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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34
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Kleinpeter E, Koch A. Chelatoaromaticity—existing: yes or no? An answer given by spatial magnetic properties (through space NMR shieldings—TSNMRS). Phys Chem Chem Phys 2011; 13:20593-601. [DOI: 10.1039/c1cp21942a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Hamze A, Le Menez P, Provot O, Morvan E, Brion JD, Alami M. Regioselective hydrostannation of highly hindered arylalkynes under ortho-directing effects. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.09.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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36
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Kleinpeter E, Bölke U, Koch A. Subtle Trade-off Existing between (Anti)Aromaticity, Push−Pull Interaction, Keto−Enol Tautomerism, and Steric Hindrance When Defining the Electronic Properties of Conjugated Structures. J Phys Chem A 2010; 114:7616-23. [DOI: 10.1021/jp103353y] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Erich Kleinpeter
- Universität Potsdam, Institut für Chemie, Karl-Liebknecht-Str. 24-25, D-14476 Potsdam(Golm), Germany
| | - Ute Bölke
- Universität Potsdam, Institut für Chemie, Karl-Liebknecht-Str. 24-25, D-14476 Potsdam(Golm), Germany
| | - Andreas Koch
- Universität Potsdam, Institut für Chemie, Karl-Liebknecht-Str. 24-25, D-14476 Potsdam(Golm), Germany
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37
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Kleinpeter E, Bölke U, Kreicberga J. Quantification of the push–pull character of azo dyes and a basis for their evaluation as potential nonlinear optical materials. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.04.067] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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38
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TÜRKER LEMI, BAYAR ÇAĞLARÇELIK, BALABAN ALEXANDRUT. A DFT Study on Push-Pull (Amino-Nitro) Fulminenes and Hexahelicenes. Polycycl Aromat Compd 2010. [DOI: 10.1080/10406631003756005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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39
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Jaramillo C, Guerra D, Moreno LF, Restrepo A. Competitive Substituent Effects on the Reactivity of Aromatic Rings. J Phys Chem A 2010; 114:6033-8. [DOI: 10.1021/jp9118919] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cinthia Jaramillo
- Grupo de Química-Física Teórica, Instituto de Química, Universidad de Antioquia, AA 1226 Medellín, Colombia
| | - Doris Guerra
- Grupo de Química-Física Teórica, Instituto de Química, Universidad de Antioquia, AA 1226 Medellín, Colombia
| | - Luis Fernando Moreno
- Grupo de Química-Física Teórica, Instituto de Química, Universidad de Antioquia, AA 1226 Medellín, Colombia
| | - Albeiro Restrepo
- Grupo de Química-Física Teórica, Instituto de Química, Universidad de Antioquia, AA 1226 Medellín, Colombia
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40
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Ortiz PD, Suardíaz R, de Vega L, Hennrich G, Ortiz PJ. Steric and Electronic Situation in the 4-X-4′-[(4′′-Y-Phenyl)ethynyl]biphenyl Homologous Series: A Joint Theoretical and Spectroscopic Study. J Phys Chem A 2010; 114:2939-44. [DOI: 10.1021/jp911163t] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pedro D. Ortiz
- Departamento de Química Orgánica y Departamento de Química-Física Aplicada, Universidad Autónoma de Madrid, Madrid, 28049, Spain, and Departamento de Química-Física, Universidad de La Habana, La Habana 10400, Cuba
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41
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Microwave-assisted cycloadditions of 2-alkynylbenzonitriles with sodium azide: selective synthesis of tetrazolo[5,1-a]pyridines and 4,5-disubstituted-2H-1,2,3-triazoles. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.08.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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42
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Kleinpeter E, Koch A. π-Delocalization in Oligoalkynes Induced by Push−Pull Substituents and 1,3-Conjugation: A Combined 13C NMR and Computational Study. J Phys Chem A 2009; 113:10852-7. [DOI: 10.1021/jp905873f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Erich Kleinpeter
- Chemisches Institut, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam(Golm), Germany
| | - Andreas Koch
- Chemisches Institut, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam(Golm), Germany
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43
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Kleinpeter E, Szatmári I, Lázár L, Koch A, Heydenreich M, Fülöp F. Visualization and quantification of anisotropic effects on the 1H NMR spectra of 1,3-oxazino[4,3-a]isoquinolines—indirect estimates of steric compression. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.07.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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44
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Kleinpeter E, Koch A. Visualization of homoaromaticity in cations, neutral molecules and anions by spatial magnetic properties (through space NMR shieldings)—an 1H/13C NMR chemical shift study. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.04.063] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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45
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Kleinpeter E, Frank A. Quantification of the Push−Pull Effect in Substituted Alkynes. Evaluation of ±I/±M Substituent Effects in Terms of C≡C Bond Length Variation. J Phys Chem A 2009; 113:6774-8. [DOI: 10.1021/jp9024359] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Erich Kleinpeter
- Chemisches Institut, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam (Golm), Germany
| | - Andrea Frank
- Chemisches Institut, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam (Golm), Germany
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46
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47
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Cyclobutadiene dianion derivatives – Planar 4c,6e or three-dimensional 6c,6e aromaticity? ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.theochem.2008.05.027] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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48
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Kleinpeter E, Koch A, Seidl PR. Visualization and Quantification of the Anisotropic Effect of C═C Double Bonds on 1H NMR Spectra of Highly Congested Hydrocarbons-Indirect Estimates of Steric Strain. J Phys Chem A 2008; 112:4989-95. [DOI: 10.1021/jp801063t] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Erich Kleinpeter
- Chemisches Institut, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Golm, Germany, and Universidade Federal do Rio de Janeiro, Escola de Química, Centro de Tecnologia, Bloco E, CEP 21949-900, Rio de Janeiro, RJ, Brazil
| | - Andreas Koch
- Chemisches Institut, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Golm, Germany, and Universidade Federal do Rio de Janeiro, Escola de Química, Centro de Tecnologia, Bloco E, CEP 21949-900, Rio de Janeiro, RJ, Brazil
| | - Peter R. Seidl
- Chemisches Institut, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Golm, Germany, and Universidade Federal do Rio de Janeiro, Escola de Química, Centro de Tecnologia, Bloco E, CEP 21949-900, Rio de Janeiro, RJ, Brazil
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49
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Kleinpeter E, Koch A, Sahoo HS, Chand DK. Anisotropic effect of the nitrate anion—manifestation of diamagnetic proton chemical shifts in the 1H NMR spectra of NO3− coordinated complexes. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.03.063] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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50
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Trisannelated benzenes – Aromatic molecules or 1,3,5-cyclohexatriene derivatives subjected to magnetic properties. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.theochem.2008.02.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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