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Bis[(dialkylamino)cyclopropenimine]‐Stabilized P III ‐ and P V ‐Centered Dications
Author(s) -
Kozma Ágnes,
Rust Jörg,
Alcarazo Manuel
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201500688
Subject(s) - chemistry , moiety , trimethylsilyl trifluoromethanesulfonate , trifluoromethanesulfonate , trimethylsilyl , electrochemistry , medicinal chemistry , crystallography , x ray crystallography , stereochemistry , diffraction , catalysis , organic chemistry , physics , optics , electrode
The treatment of bis[(dialkylamino)cyclopropenimines] with dihalophosphines in the presence of trimethylsilyl trifluoromethanesulfonate (TMSOTf) to form diimine‐stabilized P III ‐centered dications is reported. The structures of the new compounds were determined by using X‐ray diffraction analysis and their donor abilities as ligands evaluated through electrochemical methods. Despite the two positive charges that they bear, these compounds depict intermediate behavior between that of phosphines and phosphites. The coordination of the [L 2 PR] 2+ moiety to Au I and Ag I is also reported. Even more surprisingly, these phosphorus centers can be oxidized to the corresponding P V dications in the presence of strong oxidants such as peroxides or XeF 2 .