1
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Kalita N, Crawley MR, Rosch LE, Szeglowski O, Cook TR. Exploring the Te(II)/Te(IV) Redox Couple of a Tellurorosamine Chromophore: Photophysical, Photochemical, and Electrochemical Studies. Inorg Chem 2024; 63:13157-13165. [PMID: 38989980 DOI: 10.1021/acs.inorgchem.4c01077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
A tellurorosamine dye [Te(II)] undergoes aerobic photooxidation. Although Te(IV) species have been used in a number of oxidations, key Te(IV)-oxo and Te(IV)-bis(hydroxy) intermediates are challenging to study. Under aerobic irradiation with visible light, Te(II) (λmax = 600 nm) transforms into a Te(IV) species (λmax = 669 nm). The resultant Te(IV) species is not stable in the dark or at -20 °C, decomposing back to Te(II) and other byproducts over many hours. To eliminate the structural ambiguity of the Te(IV) photoproduct, we used spectroelectrochemistry, wherein the bis(hydroxy) Te(IV)-(OH)2 was electrochemically generated under anaerobic conditions. The absorption of Te(IV)-(OH)2 matches that of the Te(IV) photoproduct. Because isosbestic points are maintained both photochemically and electrochemically, the oxo core formed photochemically must rapidly equilibrate with Te(IV)-(OH)2. Calculations on the bis(hydroxy) versus oxo species further corroborate that the equilibration is rapid and the spectra of the two species are similar. To further explore Te(IV) cores, two novel compounds, Te(IV)-Cl2 and Te(IV)-Br2, were synthesized. Characterization of Te(IV)-X2 was simplified because these cores have no analogue to the Te(IV)-(O)/Te(IV)-(OH)2 equilibrium. This work provides insights into the photophysical and electrochemical behavior of Te analogues of chalcogenoxanthylium dyes, which are relevant for a broad range of photochemical applications.
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Affiliation(s)
- Nayanika Kalita
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Matthew R Crawley
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Lauren E Rosch
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Owen Szeglowski
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Timothy R Cook
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
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2
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Li S, Cao Y, Jiang L, Liu J. Synthesis of Diaryl Tellurides with Sodium Aryltellurites under Mild Conditions. Chem Asian J 2024; 19:e202300993. [PMID: 38438327 DOI: 10.1002/asia.202300993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 02/29/2024] [Accepted: 03/04/2024] [Indexed: 03/06/2024]
Abstract
A highly efficient new protocol has been developed for the formation of C-Te bonds, leading to both symmetrical and unsymmetrical diaryl tellurides. This protocol utilizes sodium aryltellurites (4), which can be easily prepared from low-cost aryltelluride trichlorides and NaOH. The synthesis involves the use of 4 and arylazo sulfones as starting materials in the presence of (MeO)2P(O)H. A variety of diaryl tellurides are obtained in moderate to good yields using this method. Importantly, this innovative protocol eliminates the need for traditional, highly toxic aryltellurolating reagents such as diaryl ditellurides and elemental tellurium. This study will bring new vitality to the synthesis of tellurides.
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Affiliation(s)
- Shan Li
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology., 200 Xiao Ling Wei Street, Nanjing, 210094, China
- Shazhou Professional Institute of Technology, Zhangjiagang, Jiangsu, 215600, China
| | - Yuan Cao
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology., 200 Xiao Ling Wei Street, Nanjing, 210094, China
| | - Lvqi Jiang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology., 200 Xiao Ling Wei Street, Nanjing, 210094, China
| | - Jie Liu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology., 200 Xiao Ling Wei Street, Nanjing, 210094, China
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3
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Groslambert L, Cornaton Y, Ditte M, Aubert E, Pale P, Tkatchenko A, Djukic JP, Mamane V. Affinity of Telluronium Chalcogen Bond Donors for Lewis Bases in Solution: A Critical Experimental-Theoretical Joint Study. Chemistry 2024; 30:e202302933. [PMID: 37970753 DOI: 10.1002/chem.202302933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 11/15/2023] [Accepted: 11/15/2023] [Indexed: 11/17/2023]
Abstract
Telluronium salts [Ar2 MeTe]X were synthesized, and their Lewis acidic properties towards a number of Lewis bases were addressed in solution by physical and theoretical means. Structural X-ray diffraction analysis of 21 different salts revealed the electrophilicity of the Te centers in their interactions with anions. Telluroniums' propensity to form Lewis pairs was investigated with OPPh3 . Diffusion-ordered NMR spectroscopy suggested that telluroniums can bind up to three OPPh3 molecules. Isotherm titration calorimetry showed that the related heats of association in 1,2-dichloroethane depend on the electronic properties of the substituents of the aryl moiety and on the nature of the counterion. The enthalpies of first association of OPPh3 span -0.5 to -5 kcal mol-1 . Study of the affinity of telluroniums for OPPh3 by state-of-the-art DFT and ab-initio methods revealed the dominant Coulombic and dispersion interactions as well as an entropic effect favoring association in solution. Intermolecular orbital interactions between [Ar2 MeTe]+ cations and OPPh3 are deemed insufficient on their own to ensure the cohesion of [Ar2 MeTe ⋅ Bn ]+ complexes in solution (B=Lewis base). Comparison of Grimme's and Tkatchenko's DFT-D4/MBD-vdW thermodynamics of formation of higher [Ar2 MeTe ⋅ Bn ]+ complexes revealed significant molecular size-dependent divergence of the two methodologies, with MBD yielding better agreement with experiment.
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Affiliation(s)
- Loïc Groslambert
- LASYROC, UMR 7177 CNRS, University of Strasbourg, 1 Rue Blaise Pascal, F-67000, Strasbourg, France
| | - Yann Cornaton
- LCSOM, UMR 7177 CNRS, Université de Strasbourg, 4 rue Blaise Pascal, F-67000, Strasbourg, France
| | - Matej Ditte
- Department of Physics and Materials Science, University of Luxembourg, L-1511, Luxembourg City, Luxembourg
| | | | - Patrick Pale
- LASYROC, UMR 7177 CNRS, University of Strasbourg, 1 Rue Blaise Pascal, F-67000, Strasbourg, France
| | - Alexandre Tkatchenko
- Department of Physics and Materials Science, University of Luxembourg, L-1511, Luxembourg City, Luxembourg
| | - Jean-Pierre Djukic
- LCSOM, UMR 7177 CNRS, Université de Strasbourg, 4 rue Blaise Pascal, F-67000, Strasbourg, France
| | - Victor Mamane
- LASYROC, UMR 7177 CNRS, University of Strasbourg, 1 Rue Blaise Pascal, F-67000, Strasbourg, France
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4
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Weiss R, Aubert E, Groslambert L, Pale P, Mamane V. Evidence for and evaluation of fluorine-tellurium chalcogen bonding. Chem Sci 2023; 14:7221-7229. [PMID: 37416727 PMCID: PMC10321537 DOI: 10.1039/d3sc00849e] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 06/03/2023] [Indexed: 07/08/2023] Open
Abstract
In the field of noncovalent interactions, chalcogen bonding (ChB) involving the tellurium atom is currently attracting much attention in supramolecular chemistry and in catalysis. However, as a prerequisite for its application, the ChB should be studied in solution to assess its formation and, if possible, to evaluate its strength. In this context, new tellurium derivatives bearing CH2F and CF3 groups were designed to exhibit Te⋯F ChB and were synthesized in good to high yields. In both types of compounds, Te⋯F interactions were characterized in solution by combining 19F, 125Te and HOESY NMR techniques. These Te⋯F ChBs were shown to contribute to the overall JTe-F coupling constants (94-170 Hz) measured in the CH2F- and CF3-based tellurium derivatives. Finally, a variable temperature NMR study allowed us to approximate the energy of the Te⋯F ChB, from 3 kJ mol-1 for the compounds with weak Te σ-holes to 11 kJ mol-1 for Te σ-holes activated by the presence of strong electron withdrawing substituents.
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Affiliation(s)
- Robin Weiss
- LASYROC, UMR 7177, University of Strasbourg 1 Rue Blaise Pascal 67000 Strasbourg France
| | | | - Loic Groslambert
- LASYROC, UMR 7177, University of Strasbourg 1 Rue Blaise Pascal 67000 Strasbourg France
| | - Patrick Pale
- LASYROC, UMR 7177, University of Strasbourg 1 Rue Blaise Pascal 67000 Strasbourg France
| | - Victor Mamane
- LASYROC, UMR 7177, University of Strasbourg 1 Rue Blaise Pascal 67000 Strasbourg France
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5
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Kraemer Y, Bergman EN, Togni A, Pitts CR. Oxidative Fluorination of Heteroatoms Enabled by Trichloroisocyanuric Acid and Potassium Fluoride. Angew Chem Int Ed Engl 2022; 61:e202205088. [PMID: 35580251 PMCID: PMC9400999 DOI: 10.1002/anie.202205088] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Indexed: 12/27/2022]
Abstract
In synthetic method development, the most rewarding path is seldom a straight line. While our initial entry into pentafluorosulfanyl (SF5) chemistry did not go according to plan (due to inaccessibility of reagents such as SF5Cl at the time), a “detour” led us to establish mild and inexpensive oxidative fluorination conditions that made aryl‐SF5 compound synthesis more accessible. The method involved the use of potassium fluoride and trichloroisocyanuric acid (TCICA)—a common swimming pool disinfectant—as opposed to previously employed reagents such as F2, XeF2, HF, and Cl2. Thereafter, curiosity led us to explore applications of TCICA/KF as a more general approach to the synthesis of fluorinated Group 15, 16, and 17 heteroatoms in organic scaffolds; this, in turn, prompted SC‐XRD, VT‐NMR, computational, and physical organic studies. Ultimately, it was discovered that TCICA/KF can be used to synthesize SF5Cl, enabling SF5 chemistry in an unexpected way.
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Affiliation(s)
- Yannick Kraemer
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, CA 95616, USA
| | - Emily Nicole Bergman
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, CA 95616, USA
| | - Antonio Togni
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1, Zürich, Switzerland
| | - Cody Ross Pitts
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, CA 95616, USA
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6
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Kraemer Y, Bergman EN, Togni A, Pitts CR. Oxidative Fluorination of Heteroatoms Enabled by Trichloroisocyanuric Acid and Potassium Fluoride. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yannick Kraemer
- Department of Chemistry University of California, Davis 1 Shields Avenue Davis CA 95616 USA
| | - Emily Nicole Bergman
- Department of Chemistry University of California, Davis 1 Shields Avenue Davis CA 95616 USA
| | - Antonio Togni
- Department of Chemistry and Applied Biosciences ETH Zürich Vladimir-Prelog-Weg 1 Zürich Switzerland
| | - Cody Ross Pitts
- Department of Chemistry University of California, Davis 1 Shields Avenue Davis CA 95616 USA
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7
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Someșan A, Vieriu S, Crăciun A, Silvestru C, Chiroi P, Nutu A, Jurj A, Lajos R, Berindan‐Neagoe I, Varga RA. C
,
O
‐Chelated organotin(IV) derivatives as potential anticancer agents: Synthesis, characterization, and cytotoxic activity. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Adrian‐Alexandru Someșan
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry and Chemical Engineering Babeș‐Bolyai University Cluj‐Napoca Romania
| | - Sabina‐Mădălina Vieriu
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry and Chemical Engineering Babeș‐Bolyai University Cluj‐Napoca Romania
| | - Alexandru Crăciun
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry and Chemical Engineering Babeș‐Bolyai University Cluj‐Napoca Romania
| | - Cristian Silvestru
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry and Chemical Engineering Babeș‐Bolyai University Cluj‐Napoca Romania
| | - Paul Chiroi
- Research Center for Functional Genomics, Biomedicine and Translational Medicine Iuliu Hatieganu University of Medicine and Pharmacy Cluj‐Napoca Romania
| | - Andreea Nutu
- Research Center for Functional Genomics, Biomedicine and Translational Medicine Iuliu Hatieganu University of Medicine and Pharmacy Cluj‐Napoca Romania
| | - Ancuta Jurj
- Research Center for Functional Genomics, Biomedicine and Translational Medicine Iuliu Hatieganu University of Medicine and Pharmacy Cluj‐Napoca Romania
| | - Raduly Lajos
- Research Center for Functional Genomics, Biomedicine and Translational Medicine Iuliu Hatieganu University of Medicine and Pharmacy Cluj‐Napoca Romania
| | - Ioana Berindan‐Neagoe
- Research Center for Functional Genomics, Biomedicine and Translational Medicine Iuliu Hatieganu University of Medicine and Pharmacy Cluj‐Napoca Romania
| | - Richard A. Varga
- Supramolecular Organic and Organometallic Chemistry Centre, Department of Chemistry and Chemical Engineering Babeș‐Bolyai University Cluj‐Napoca Romania
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8
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Weiss R, Aubert E, Pale P, Mamane V. Chalcogen‐Bonding Catalysis with Telluronium Cations. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105482] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Robin Weiss
- LASYROC UMR 7177, University of Strasbourg 1 Rue Blaise Pascal 67000 Strasbourg France
| | - Emmanuel Aubert
- CRM2 University of Lorraine, BP 70239 Boulevard des Aiguillettes 54506 Vandoeuvre-lès-Nancy France
| | - Patrick Pale
- LASYROC UMR 7177, University of Strasbourg 1 Rue Blaise Pascal 67000 Strasbourg France
| | - Victor Mamane
- LASYROC UMR 7177, University of Strasbourg 1 Rue Blaise Pascal 67000 Strasbourg France
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9
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Weiss R, Aubert E, Pale P, Mamane V. Chalcogen-Bonding Catalysis with Telluronium Cations. Angew Chem Int Ed Engl 2021; 60:19281-19286. [PMID: 34166563 DOI: 10.1002/anie.202105482] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 06/04/2021] [Indexed: 11/08/2022]
Abstract
Chalcogen bonding results from non-covalent interactions occurring between electrodeficient chalcogen atoms and Lewis bases. Among the chalcogens, tellurium is the strongest Lewis acid, but Te-based compounds are scarcely used as organocatalysts. For the first time, telluronium cations demonstrated impressive catalytic properties at low loadings in three benchmark reactions: the Friedel-Crafts bromination of anisole, the bromolactonization of ω-unsaturated carboxylic acids and the aza-Diels-Alder between Danishefsky's diene and imines. The ability of telluronium cations to interact with a Lewis base through chalcogen bonding was demonstrated on the basis of multi-nuclear (17 O, 31 P, and 125 Te) NMR analysis and DFT calculations.
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Affiliation(s)
- Robin Weiss
- LASYROC, UMR 7177, University of Strasbourg, 1 Rue Blaise Pascal, 67000, Strasbourg, France
| | - Emmanuel Aubert
- CRM2, University of Lorraine, BP 70239, Boulevard des Aiguillettes, 54506, Vandoeuvre-lès-Nancy, France
| | - Patrick Pale
- LASYROC, UMR 7177, University of Strasbourg, 1 Rue Blaise Pascal, 67000, Strasbourg, France
| | - Victor Mamane
- LASYROC, UMR 7177, University of Strasbourg, 1 Rue Blaise Pascal, 67000, Strasbourg, France
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10
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Lash TD, AbuSalim DI, Ferrence GM. Telluracarbaporphyrins and a Related Palladium(II) Complex: Evidence for Hypervalent Interactions. Inorg Chem 2021; 60:9833-9847. [PMID: 34134482 DOI: 10.1021/acs.inorgchem.1c01039] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reaction of a carbatripyrrin with a tellurophene dicarbinol in the presence of BF3·Et2O, followed by oxidation with DDQ, afforded the first example of a telluracarbaporphyrin. Although this system exhibits strongly aromatic characteristics, it is prone to air oxidation, giving rise to a hydroxy derivative that was characterized by X-ray crystallography. The initial telluracarbaporphyrin reacted with palladium(II) acetate to give a stable organometallic complex, and X-ray crystallography showed that the palladium cation was coordinated to all four atoms in the CNTeN core. An oxacarbatripyrrin was also reacted with a tellurophene dialcohol to give an air-stable porphyrin analogue with a CNTeO core. Nonmetalated telluracarbaporphyrins showed relatively short Te-N separations that strongly implied the involvement of hypervalent tellurium interactions. Furthermore, despite the presence of a very large tellurium atom, the tellurophene subunit is not strongly pivoted away from the mean macrocyclic plane as would be expected in the absence of these interactions. The aromatic properties of heterocarbaporphyrins were assessed by proton NMR spectroscopy, NICS calculations, and AICD plots. In addition, the relative stability of hydroxytelluraporphyrins in comparison to their tellurophene oxide tautomers was investigated and the aromatic characteristics of these oxidized structures were evaluated.
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Affiliation(s)
- Timothy D Lash
- Department of Chemistry, Illinois State University, Normal, Illinois 61790-4160, United States
| | - Deyaa I AbuSalim
- Department of Chemistry, Illinois State University, Normal, Illinois 61790-4160, United States
| | - Gregory M Ferrence
- Department of Chemistry, Illinois State University, Normal, Illinois 61790-4160, United States
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11
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Rusakova IL, Rusakov YY. Quantum chemical calculations of 77 Se and 125 Te nuclear magnetic resonance spectral parameters and their structural applications. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2021; 59:359-407. [PMID: 33095923 DOI: 10.1002/mrc.5111] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/01/2020] [Accepted: 10/07/2020] [Indexed: 06/11/2023]
Abstract
An accurate quantum chemical (QC) modeling of 77 Se and 125 Te nuclear magnetic resonance (NMR) spectra is deeply involved in the NMR structural assignment for selenium and tellurium compounds that are of utmost importance both in organic and inorganic chemistry nowadays due to their huge application potential in many fields, like biology, medicine, and metallurgy. The main interest of this review is focused on the progress in QC computations of 77 Se and 125 Te NMR chemical shifts and indirect spin-spin coupling constants involving these nuclei. Different computational methodologies that have been used to simulate the NMR spectra of selenium and tellurium compounds since the middle of the 1990s are discussed with a strong emphasis on their accuracy. A special accent is placed on the calculations resorting to the relativistic methodologies, because taking into account the relativistic effects appreciably influences the precision of NMR calculations of selenium and, especially, tellurium compounds. Stereochemical applications of quantum chemical calculations of 77 Se and 125 Te NMR parameters are discussed so as to exemplify the importance of integrated approach of experimental and computational NMR techniques.
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Affiliation(s)
- Irina L Rusakova
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk, Russian Federation
| | - Yuriy Yu Rusakov
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk, Russian Federation
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12
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Grollier K, Taponard A, Billard T. Synthetic Approaches to Fluoroalkyltelluryl‐Substituted Compounds. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000839] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Kevin Grollier
- Institute of Chemistry and Biochemistry (ICBMS‐UMR CNRS 5246) Univ Lyon Université Lyon 1, CNRS, CPE, INSA 43 Bd du 11 novembre 1918 69622 Villeurbanne France
| | - Alexis Taponard
- Institute of Chemistry and Biochemistry (ICBMS‐UMR CNRS 5246) Univ Lyon Université Lyon 1, CNRS, CPE, INSA 43 Bd du 11 novembre 1918 69622 Villeurbanne France
| | - Thierry Billard
- Institute of Chemistry and Biochemistry (ICBMS‐UMR CNRS 5246) Univ Lyon Université Lyon 1, CNRS, CPE, INSA 43 Bd du 11 novembre 1918 69622 Villeurbanne France
- CERMEP‐In vivo imaging 59 Bd Pinel 69677 Lyon France
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13
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Pietrasiak E, Gordon CP, Copéret C, Togni A. Understanding 125Te NMR chemical shifts in disymmetric organo-telluride compounds from natural chemical shift analysis. Phys Chem Chem Phys 2020; 22:2319-2326. [DOI: 10.1039/c9cp05934b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Magnetic coupling of the lone pair: theoretical investigations reveal the origin of 125Te chemical shift in disymmetric organotellurides
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Affiliation(s)
- Ewa Pietrasiak
- ETH Zürich
- Department of Chemistry and Applied Sciences
- Vladimir-Prelog-Weg 2
- CH-8093 Zürich
- Switzerland
| | - Christopher P. Gordon
- ETH Zürich
- Department of Chemistry and Applied Sciences
- Vladimir-Prelog-Weg 2
- CH-8093 Zürich
- Switzerland
| | - Christophe Copéret
- ETH Zürich
- Department of Chemistry and Applied Sciences
- Vladimir-Prelog-Weg 2
- CH-8093 Zürich
- Switzerland
| | - Antonio Togni
- ETH Zürich
- Department of Chemistry and Applied Sciences
- Vladimir-Prelog-Weg 2
- CH-8093 Zürich
- Switzerland
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14
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Kalim J, Duhail T, Le TN, Vanthuyne N, Anselmi E, Togni A, Magnier E. Merging hypervalent iodine and sulfoximine chemistry: a new electrophilic trifluoromethylation reagent. Chem Sci 2019; 10:10516-10523. [PMID: 32110339 PMCID: PMC7020794 DOI: 10.1039/c9sc04289j] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Accepted: 09/20/2019] [Indexed: 01/01/2023] Open
Abstract
Electrophilic trifluoromethylation is at the forefront of methodologies available for the installation of the CF3 moiety to organic molecules; research in this field is largely spurred by the availability of stable and accessible trifluoromethylation reagents, of which hypervalent iodine and sulfoximine based compounds have emerged as two prominent reagent classes. Herein, we describe the facile synthesis of an electrophilic trifluoromethylation reagent which merges these two scaffolds in a novel hypervalent iodosulfoximine compound. This presents the first analogue of the well-known Togni reagents which neither compromises stability or reactivity. The electronic and physical properties of this new compound were fully explored by X-ray crystallography, cyclic voltammetry, TGA/DSC and DFT analysis. This solution stable, crystalline reagent was found to be competent in the electrophilic trifluoromethylation of a variety of nucleophiles as well as a source of the trifluoromethyl radical. Furthermore, the possibility of enantioinductive transformations could be probed with the isolation of the first enantiopure hypervalent iodine compound bearing a CF3 group, thus this new reagent scaffold offers the opportunity of structurally diversifying the reagent towards asymmetric synthesis.
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Affiliation(s)
- Jorna Kalim
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 2 , 8093 Zürich , Switzerland .
| | - Thibaut Duhail
- Institut Lavoisier de Versailles , UMR CNRS 8180 , Université de Versailles-Saint-Quentin , 45 Avenue des Etats-Unis , 78035 Versailles Cedex , France .
| | - Thanh-Nghi Le
- Institut Lavoisier de Versailles , UMR CNRS 8180 , Université de Versailles-Saint-Quentin , 45 Avenue des Etats-Unis , 78035 Versailles Cedex , France .
| | - Nicolas Vanthuyne
- Institut des Sciences Moléculaires de Marseille , Centrale Marseille , UMR 7313 , Aix-Marseille Université , CNRS , Avenue Escadrille Normandie Niemen , 13013 Marseille Cedex , France
| | - Elsa Anselmi
- Institut Lavoisier de Versailles , UMR CNRS 8180 , Université de Versailles-Saint-Quentin , 45 Avenue des Etats-Unis , 78035 Versailles Cedex , France .
| | - Antonio Togni
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 2 , 8093 Zürich , Switzerland .
| | - Emmanuel Magnier
- Institut Lavoisier de Versailles , UMR CNRS 8180 , Université de Versailles-Saint-Quentin , 45 Avenue des Etats-Unis , 78035 Versailles Cedex , France .
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15
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Bornemann D, Pitts CR, Ziegler CJ, Pietrasiak E, Trapp N, Kueng S, Santschi N, Togni A. Pentafluoro(aryl)-λ 6 -tellanes and Tetrafluoro(aryl)(trifluoromethyl)-λ 6 -tellanes: From SF 5 to the TeF 5 and TeF 4 CF 3 Groups. Angew Chem Int Ed Engl 2019; 58:12604-12608. [PMID: 31250962 DOI: 10.1002/anie.201907359] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Indexed: 11/05/2022]
Abstract
The TeF5 group is significantly underexplored as a highly fluorinated substituent on an organic framework, despite it being a larger congener of the acclaimed SF5 group. In fact, only one aryl-TeF5 compound (phenyl-TeF5 ) has been reported to date, synthesized using XeF2 . Our recently developed mild TCICA/KF approach to oxidative fluorination provides an affordable and scalable alternative to XeF2 . Using this method, we report a scope of extensively characterized aryl-TeF5 compounds, along with the first SC-XRD data on this compound class. The methodology was also extended to the synthesis and structural study of heretofore unknown aryl-TeF4 CF3 compounds. Additionally, preliminary reactivity studies unveiled some inconsistencies with previous literature regarding phenyl-TeF5 . Although our studies conclude that the arene-based TeF5 (and TeF4 CF3 ) group is not quite as robust as the SF5 group, we find that the TeF5 group is more stable than previously thought, thus opening a door to explore new applications of this motif.
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Affiliation(s)
- Dustin Bornemann
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
| | - Cody Ross Pitts
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
| | - Carmen J Ziegler
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
| | - Ewa Pietrasiak
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
| | - Nils Trapp
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
| | - Sebastian Kueng
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
| | - Nico Santschi
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
| | - Antonio Togni
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, 8093, Zürich, Switzerland
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16
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Bornemann D, Pitts CR, Ziegler CJ, Pietrasiak E, Trapp N, Küng S, Santschi N, Togni A. Pentafluor(aryl)‐λ
6
‐tellane und Tetrafluor(aryl)(trifluormethyl)‐λ
6
‐tellane: von SF
5
‐ zu den TeF
5
‐ und TeF
4
CF
3
‐Gruppen. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907359] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Dustin Bornemann
- Department Chemie und Angewandte BiowissenschaftenEidgenössische Technische Hochschule (ETH) Vladimir-Prelog-Weg 2 8093 Zürich Schweiz
| | - Cody Ross Pitts
- Department Chemie und Angewandte BiowissenschaftenEidgenössische Technische Hochschule (ETH) Vladimir-Prelog-Weg 2 8093 Zürich Schweiz
| | - Carmen J. Ziegler
- Department Chemie und Angewandte BiowissenschaftenEidgenössische Technische Hochschule (ETH) Vladimir-Prelog-Weg 2 8093 Zürich Schweiz
| | - Ewa Pietrasiak
- Department Chemie und Angewandte BiowissenschaftenEidgenössische Technische Hochschule (ETH) Vladimir-Prelog-Weg 2 8093 Zürich Schweiz
| | - Nils Trapp
- Department Chemie und Angewandte BiowissenschaftenEidgenössische Technische Hochschule (ETH) Vladimir-Prelog-Weg 2 8093 Zürich Schweiz
| | - Sebastian Küng
- Department Chemie und Angewandte BiowissenschaftenEidgenössische Technische Hochschule (ETH) Vladimir-Prelog-Weg 2 8093 Zürich Schweiz
| | - Nico Santschi
- Department Chemie und Angewandte BiowissenschaftenEidgenössische Technische Hochschule (ETH) Vladimir-Prelog-Weg 2 8093 Zürich Schweiz
| | - Antonio Togni
- Department Chemie und Angewandte BiowissenschaftenEidgenössische Technische Hochschule (ETH) Vladimir-Prelog-Weg 2 8093 Zürich Schweiz
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17
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Pietrasiak E, Baxter AF, Jelier B, Santschi N, Togni A. Trifluoromethyl Derivatives of Benzooxatellurole. Helv Chim Acta 2019. [DOI: 10.1002/hlca.201900079] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ewa Pietrasiak
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of TechnologyETH Zürich Vladimir- Prelog-Weg 2 CH-8093 Zürich Switzerland
| | - Amanda F. Baxter
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of TechnologyETH Zürich Vladimir- Prelog-Weg 2 CH-8093 Zürich Switzerland
| | - Benson Jelier
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of TechnologyETH Zürich Vladimir- Prelog-Weg 2 CH-8093 Zürich Switzerland
| | - Nico Santschi
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of TechnologyETH Zürich Vladimir- Prelog-Weg 2 CH-8093 Zürich Switzerland
| | - Antonio Togni
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of TechnologyETH Zürich Vladimir- Prelog-Weg 2 CH-8093 Zürich Switzerland
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18
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Bandeira P, Souza JPA, Scariot DB, Garcia FP, Nakamura CV, de Oliveira ARM, Piovan L. Diacetal Ditellurides as Highly Active and Selective Antiparasitic Agents toward Leishmania amazonensis. ACS Med Chem Lett 2019; 10:806-810. [PMID: 31098003 PMCID: PMC6511953 DOI: 10.1021/acsmedchemlett.9b00060] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 04/08/2019] [Indexed: 12/29/2022] Open
Abstract
Leishmaniasis is a neglected tropical disease and a public health concern in at least 98 countries, affecting mainly the poorest populations. Pharmaceuticals and chemotherapies available for leishmaniasis treatment have several limitations, which clearly justify the efforts to find new potential antileishmanial drugs. In this context, antiprotozoal activities toward different Leishmania species have been reported for hypervalent tellurium compounds, which motivated us to investigate, for the first time, the leishmanicidal properties of some nonhypervalent diaryl ditellurides. Thus, this work describes in vitro activity against Leishmania amazonensis and the cytotoxicities of diaryl ditellurides. Ditelluride LQ7 revealed a strong leishmanicidal activity on promastigotes and amastigotes at submicromolar levels (IC50 = 0.9 ± 0.1 and 0.5 ± 0.1 μmol L-1, respectively) and presented selectivity indexes greater than those of reference drug miltefosine. This preliminary study suggests that diaryl ditellurides may be promising scaffolds for the development of new agents for leishmaniasis treatment.
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Affiliation(s)
- Pamela
T. Bandeira
- Department
of Chemistry, Universidade Federal do Parana, Curitiba 4106902, Brazil
| | - João Pedro A. Souza
- Department
of Chemistry, Universidade Federal do Parana, Curitiba 4106902, Brazil
| | - Débora B. Scariot
- Health
Sciences Center, Universidade Estadual de
Maringá, Maringá 4115200, Brazil
| | - Francielle P. Garcia
- Health
Sciences Center, Universidade Estadual de
Maringá, Maringá 4115200, Brazil
| | - Celso V. Nakamura
- Health
Sciences Center, Universidade Estadual de
Maringá, Maringá 4115200, Brazil
| | | | - Leandro Piovan
- Department
of Chemistry, Universidade Federal do Parana, Curitiba 4106902, Brazil
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19
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Politanskaya LV, Selivanova GA, Panteleeva EV, Tretyakov EV, Platonov VE, Nikul’shin PV, Vinogradov AS, Zonov YV, Karpov VM, Mezhenkova TV, Vasilyev AV, Koldobskii AB, Shilova OS, Morozova SM, Burgart YV, Shchegolkov EV, Saloutin VI, Sokolov VB, Aksinenko AY, Nenajdenko VG, Moskalik MY, Astakhova VV, Shainyan BA, Tabolin AA, Ioffe SL, Muzalevskiy VM, Balenkova ES, Shastin AV, Tyutyunov AA, Boiko VE, Igumnov SM, Dilman AD, Adonin NY, Bardin VV, Masoud SM, Vorobyeva DV, Osipov SN, Nosova EV, Lipunova GN, Charushin VN, Prima DO, Makarov AG, Zibarev AV, Trofimov BA, Sobenina LN, Belyaeva KV, Sosnovskikh VY, Obydennov DL, Usachev SA. Organofluorine chemistry: promising growth areas and challenges. RUSSIAN CHEMICAL REVIEWS 2019. [DOI: 10.1070/rcr4871] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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20
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Sperger T, Guven S, Schoenebeck F. Chemoselective Pd‐Catalyzed C‐TeCF
3
Coupling of Aryl Iodides. Angew Chem Int Ed Engl 2018; 57:16903-16906. [DOI: 10.1002/anie.201810950] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Theresa Sperger
- Institute of Organic ChemistryRWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Sinem Guven
- Institute of Organic ChemistryRWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Franziska Schoenebeck
- Institute of Organic ChemistryRWTH Aachen University Landoltweg 1 52074 Aachen Germany
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21
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Sperger T, Guven S, Schoenebeck F. Chemoselektive Pd‐katalysierte C‐TeCF
3
‐Kupplung von Aryliodiden. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810950] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Theresa Sperger
- Institut für Organische ChemieRWTH Aachen Landoltweg 1 52074 Aachen Deutschland
| | - Sinem Guven
- Institut für Organische ChemieRWTH Aachen Landoltweg 1 52074 Aachen Deutschland
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22
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Schotten C, Howard JL, Jenkins RL, Codina A, Browne DL. A continuous flow-batch hybrid reactor for commodity chemical synthesis enabled by inline NMR and temperature monitoring. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.05.070] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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23
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Liebing P, Pietrasiak E, Otth E, Kalim J, Bornemann D, Togni A. Supramolecular Aggregation of Perfluoroorganyl Iodane Reagents in the Solid State and in Solution. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800358] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Phil Liebing
- Department of Chemistry and Applied Biosciences; Swiss Federal Institute of Technology; ETH Zurich; Vladimir-Prelog-Weg 2 8093 Zurich Switzerland
| | - Ewa Pietrasiak
- Department of Chemistry and Applied Biosciences; Swiss Federal Institute of Technology; ETH Zurich; Vladimir-Prelog-Weg 2 8093 Zurich Switzerland
| | - Elisabeth Otth
- Department of Chemistry and Applied Biosciences; Swiss Federal Institute of Technology; ETH Zurich; Vladimir-Prelog-Weg 2 8093 Zurich Switzerland
| | - Jorna Kalim
- Department of Chemistry and Applied Biosciences; Swiss Federal Institute of Technology; ETH Zurich; Vladimir-Prelog-Weg 2 8093 Zurich Switzerland
| | - Dustin Bornemann
- Department of Chemistry and Applied Biosciences; Swiss Federal Institute of Technology; ETH Zurich; Vladimir-Prelog-Weg 2 8093 Zurich Switzerland
| | - Antonio Togni
- Department of Chemistry and Applied Biosciences; Swiss Federal Institute of Technology; ETH Zurich; Vladimir-Prelog-Weg 2 8093 Zurich Switzerland
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24
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Wang R, Kalf I, Englert U. Insight into trifluoromethylation – experimental electron density for Togni reagent I. RSC Adv 2018; 8:34287-34290. [PMID: 35548651 PMCID: PMC9087471 DOI: 10.1039/c8ra07187j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 09/28/2018] [Indexed: 11/21/2022] Open
Abstract
The experimentally observed electron density for the “Togni reagent” explains the interaction of the hypervalent iodine atom with a nucleophile.
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Affiliation(s)
- R. Wang
- Institute of Inorganic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - I. Kalf
- Institute of Inorganic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - U. Englert
- Institute of Molecular Science
- Shanxi University
- Taiyuan
- P. R. China
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