Reactivity of [Cp*Fe(η5-As5)] towards Carbenes, Silylenes and Germylenes.
arsenic * functionalization * germylene * nucleophiles * silylene
Journal
Angewandte Chemie (International ed. in English)
ISSN: 1521-3773
Titre abrégé: Angew Chem Int Ed Engl
Pays: Germany
ID NLM: 0370543
Informations de publication
Date de publication:
20 Nov 2023
20 Nov 2023
Historique:
revised:
19
11
2023
received:
24
10
2023
accepted:
20
11
2023
medline:
20
11
2023
pubmed:
20
11
2023
entrez:
20
11
2023
Statut:
aheadofprint
Résumé
The reaction behavior of [Cp*Fe(η5-As5)] (I) (Cp* = C5Me5) towards carbenes and their heavier analogs was investigated. The reaction of I with NHCs (NHCs = N-heterocyclic carbenes) results in the first substitution products of polyarsenic ligand complexes by NHCs [Cp*Fe(η4-As5NHC)] (1a: NHC = IMe = 1,3,4,5-tetramethylimidazolin-2-ylidene, 1b: NHC = IMes = 1,3-bis(2,4,6-trimethylphenyl)-imidazolin-2-ylidene). In contrast, the reaction of I with EtCAAC (EtCAAC = 2,6-diisopropylphenyl)-4,4-diethyl-2,2-dimethyl-pyrrolidin-5-ylidene) leads to a fragmentation and the formation of an unprecedented As6-sawhorse-type compound [As2(AsEtCAAC)4] (2). The reaction of (LE)2 (L = PhC(NtBu)2 (E = Si, Ge) with I resulted in a rearrangement and an insertion of LE fragments, forming unique silicon- (4: [Cp*Fe(η4-As4SiL)], 5a: [Cp*Fe(η4-As6SiL)) and germanium-containing (5b: [Cp*Fe(η4-As6GeL)) cyclic polyarsenic ligand complexes.
Identifiants
pubmed: 37983682
doi: 10.1002/anie.202316117
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e202316117Informations de copyright
© 2023 Wiley-VCH GmbH.