The Complex Reactivity of [(salen)Fe]
Journal
ACS catalysis
ISSN: 2155-5435
Titre abrégé: ACS Catal
Pays: United States
ID NLM: 101562209
Informations de publication
Date de publication:
01 Sep 2023
01 Sep 2023
Historique:
received:
26
06
2023
revised:
01
08
2023
medline:
6
9
2023
pubmed:
6
9
2023
entrez:
6
9
2023
Statut:
epublish
Résumé
We report a detailed study into the method of precatalyst activation during alkyne cyclotrimerization. During these studies we have prepared a homologous series of Fe(III)-μ-oxo(salen) complexes and use a range of techniques including UV-vis, reaction monitoring studies, single crystal X-ray diffraction, NMR spectroscopy, and LIFDI mass spectrometry to provide experimental evidence for the nature of the on-cycle iron catalyst. These data infer the likelihood of ligand reduction, generating an iron(salan)-boryl complex as a key on-cycle intermediate. We use DFT studies to interrogate spin states, connecting this to experimentally identified diamagnetic and paramagnetic species. The extreme conformational flexibility of the salan system appears connected to challenges associated with crystallization of likely on-cycle species.
Identifiants
pubmed: 37671182
doi: 10.1021/acscatal.3c02898
pmc: PMC10476159
doi:
Types de publication
Journal Article
Langues
eng
Pagination
11841-11850Informations de copyright
© 2023 The Authors. Published by American Chemical Society.
Déclaration de conflit d'intérêts
The authors declare no competing financial interest.
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