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Your search keyword '"Radacki, Krzysztof"' showing total 14 results
Start Over Author "Radacki, Krzysztof" Publication Year Range Last 10 years Journal angewandte chemie international edition
14 results on '"Radacki, Krzysztof"'

2. All‐Inorganic sp‐Chain Ligands: Isoelectronic B/N Analogues of E. O. Fischer's Alkynylcarbynes.

Author

Walther, Luis, Radacki, Krzysztof, Dewhurst, Rian D., Bertermann, Rüdiger, Finze, Maik, and Braunschweig, Holger

Subjects
*LIGANDS (Chemistry), *NANOWIRES, *RING formation (Chemistry), *BORYLATION, *MOLECULES, *NITROGEN
Abstract

Borylation of a tungsten‐bound N2 ligand and halide abstraction provides access to a cationic complex with an unprecedented linear NNBR ligand. This complex undergoes [3+2] cycloaddition with azides, and an unexpected chain‐extension reaction with an iminoborane, leading to a complex with a five‐atom B/N chain. These two [NNBR]‐containing complexes, inorganic analogues of E. O. Fischer's alkynylcarbynes, are very rare examples of molecules containing all‐inorganic chains of sp‐hybridized atoms. [ABSTRACT FROM AUTHOR]

Published
2024
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5. Reduction and Rearrangement of a Boron(I) Carbonyl Complex

Author

Rang, Maximilian, primary, Fantuzzi, Felipe, additional, Arrowsmith, Merle, additional, Krummenacher, Ivo, additional, Beck, Eva, additional, Witte, Robert, additional, Matler, Alexander, additional, Rempel, Anna, additional, Bischof, Tobias, additional, Radacki, Krzysztof, additional, Engels, Bernd, additional, and Braunschweig, Holger, additional

Published
2020
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7. Near‐Infrared Quadrupolar Chromophores Combining Three‐Coordinate Boron‐Based Superdonor and Superacceptor Units

Author

Stennett, Tom E., primary, Bissinger, Philipp, additional, Griesbeck, Stefanie, additional, Ullrich, Stefan, additional, Krummenacher, Ivo, additional, Auth, Michael, additional, Sperlich, Andreas, additional, Stolte, Matthias, additional, Radacki, Krzysztof, additional, Yao, Chang‐Jiang, additional, Würthner, Frank, additional, Steffen, Andreas, additional, Marder, Todd B., additional, and Braunschweig, Holger, additional

Published
2019
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8. Isolation and Reactivity of an Antiaromatic s‐Block Metal Compound.

Author

Roy, Dipak Kumar, Tröster, Tobias, Fantuzzi, Felipe, Dewhurst, Rian D., Lenczyk, Carsten, Radacki, Krzysztof, Pranckevicius, Conor, Engels, Bernd, and Braunschweig, Holger

Subjects
METAL compounds, BERYLLIUM, ALKALINE earth compounds, HETEROCYCLIC compounds synthesis, CHEMICAL reduction, ANTIAROMATICITY
Abstract

The concepts of aromaticity and antiaromaticity have a long history, and countless demonstrations of these phenomena have been made with molecules based on elements from the p, d, and f blocks of the periodic table. In contrast, the limited oxidation‐state flexibility of the s‐block metals has long stood in the way of their participation in sophisticated π‐bonding arrangements, and truly antiaromatic systems containing s‐block metals are altogether absent or remain poorly defined. Using spectroscopic, structural, and computational techniques, we present herein the synthesis and authentication of a heterocyclic compound containing the alkaline earth metal beryllium that exhibits significant antiaromaticity, and detail its chemical reduction and Lewis‐base‐coordination chemistry. [ABSTRACT FROM AUTHOR]

Published
2021
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9. Reduction and Rearrangement of a Boron(I) Carbonyl Complex.

Author

Rang, Maximilian, Fantuzzi, Felipe, Arrowsmith, Merle, Krummenacher, Ivo, Beck, Eva, Witte, Robert, Matler, Alexander, Rempel, Anna, Bischof, Tobias, Radacki, Krzysztof, Engels, Bernd, and Braunschweig, Holger

Subjects
RADICAL anions, BORON, ATOMS
Abstract

The one‐electron reduction of a cyclic (alkyl)(amino)carbene (CAAC)‐stabilized arylborylene carbonyl complex yields a dimeric borylketyl radical anion, resulting from an intramolecular aryl migration to the CO carbon atom. Computational analyses support the existence of a [(CAAC)B(CO)Ar].− radical anion intermediate. Further reduction leads to a highly nucleophilic dianionic (boraneylidene)methanolate. [ABSTRACT FROM AUTHOR]

Published
2021
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14. Dative Bonding between Group 13 Elements Using a Boron-Centered Lewis Base.

Author

Braunschweig, Holger, Dewhurst, Rian D., Pentecost, Leanne, Radacki, Krzysztof, Vargas, Alfredo, and Ye, Qing

Subjects
CHEMICAL bonds, CHEMICAL adducts, LEWIS acids, BORON compounds, BORON
Abstract

An electron-rich monovalent boron compound is used as a Lewis base to prepare adducts with Group 13 Lewis acids using both its boron and nitrogen sites. The hard Lewis acid AlCl3 binds through a nitrogen atom of the Lewis base, while softer Lewis acids GaX3 (Cl, Br, I) bind at the boron atom. The latter are the first noncluster Lewis adducts between a boron-centered Lewis base and a main-group Lewis acid. [ABSTRACT FROM AUTHOR]

Published
2016
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