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Frontispiece: From Phosphidic to Phosphonium? Umpolung of the P 4 ‐Bonding Situation in [CpFe(CO)(L)(η 1 ‐P 4 )] + Cations (L=CO or PPh 3 )
Author(s) -
Riddlestone Ian M.,
Weis Philippe,
Martens Arthur,
Schorpp Marcel,
Scherer Harald,
Krossing Ingo
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201984563
Subject(s) - umpolung , phosphonium , cyclopentadienyl complex , white phosphorus , crystallography , phosphorus , chemistry , stereochemistry , polymer chemistry , catalysis , organic chemistry , nucleophile
A low barrier to the exchange of metalated and non‐metalated phosphorus atoms is observed in white phosphorus complexes of electron poor cyclopentadienyl iron cations. Analysis of the bonding present in these systems identifies a formal Umpolung in the Fe−P bond resulting from the electron deficient nature of the iron center. This permits the description of these complexes as phosphonium complexes. For the full story see the Communication by I. Krossing et al. on page 10546 ff.