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Carbon-carbon bond activation at chromium(I): an 11-electron complex cleaving dialkynes

An 11-electron T-shaped chromium(I) complex was obtained by reduction of a PNP-supported chromium(II) iodide complex. Its d5 high-spin electronic structure was characterized employing paramagnetic NMR, EPR, UV/Vis and magnetic measurements (SQUID). The complex readily reacts with conjugated dialkyne...

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Bibliographic Details
Main Authors: Braun, Felix (Author) , Bruckhoff, Tim (Author) , Ott, Jonas C. (Author) , Ballmann, Joachim (Author) , Gade, Lutz H. (Author)
Format: Article (Journal)
Language:English
Published: December 16, 2024
In: Angewandte Chemie. International edition
Year: 2024, Volume: 63, Issue: 51, Pages: 1-6
ISSN:1521-3773
DOI:10.1002/anie.202418646
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1002/anie.202418646
Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.202418646
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Author Notes:Felix Braun, Tim Bruckhoff, Jonas C. Ott, Joachim Ballmann, and Lutz H. Gade
Description
Summary:An 11-electron T-shaped chromium(I) complex was obtained by reduction of a PNP-supported chromium(II) iodide complex. Its d5 high-spin electronic structure was characterized employing paramagnetic NMR, EPR, UV/Vis and magnetic measurements (SQUID). The complex readily reacts with conjugated dialkynes to cleave the internal C−C bond, forming the respective acetylide complexes. Varying the alkyne substituents enabled the isolation and characterization of dinuclear dialkynedichromium intermediates which thermally convert to the products.
Item Description:Online verfügbar: 28. Oktober 2024
Gesehen am 13.05.2025
Physical Description:Online Resource
ISSN:1521-3773
DOI:10.1002/anie.202418646

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