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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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
December 16, 2024
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| 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 |
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| 520 | |a 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. | ||
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