The Bis(ferrocenyl)phosphenium Ion Revisited

The bis(ferrocenyl)phosphenium ion, [Fc(2)P](+), reported by Cowley et al. (J. Am. Chem. Soc. 1981, 103, 714–715), was the only claimed donor‐free divalent phosphenium ion. Our examination of the molecular and electronic structure reveals that [Fc(2)P](+) possesses significant intramolecular Fe⋅⋅⋅P...

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Detalles Bibliográficos
Autores principales: Olaru, Marian, Mischin, Alexandra, Malaspina, Lorraine A., Mebs, Stefan, Beckmann, Jens
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2019
Materias:
Communications
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7003730/
https://www.ncbi.nlm.nih.gov/pubmed/31751492
http://dx.doi.org/10.1002/anie.201913081
Descripción
Sumario:The bis(ferrocenyl)phosphenium ion, [Fc(2)P](+), reported by Cowley et al. (J. Am. Chem. Soc. 1981, 103, 714–715), was the only claimed donor‐free divalent phosphenium ion. Our examination of the molecular and electronic structure reveals that [Fc(2)P](+) possesses significant intramolecular Fe⋅⋅⋅P contacts, which are predominantly electrostatic and moderate the Lewis acidity. Nonetheless, [Fc(2)P](+) undergoes complex formation with the Lewis bases PPh(3) and IPr to give the donor–acceptor complexes [Fc(2)P(PPh(3))](+) and [Fc(2)P(IPr)](+) (IPr=1,3‐bis(2,6‐diisopropylphenyl)imidazole‐2‐ylidene).

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