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NHC‐Stabilized Parent Phosphinidene Adducts of Metal(II) Hexamethyldisilazanides of Manganese – Cobalt and Their Lability in Solution.
- Source :
-
Zeitschrift für Anorganische und Allgemeine Chemie . 9/13/2022, Vol. 648 Issue 17, p1-6. 6p. - Publication Year :
- 2022
-
Abstract
- The behavior of the N‐heterocyclic carbene (NHC) stabilized 'parent' phosphinidene [(sIDipp)PH] (Dipp=2,6‐di‐isopropylphenyl) towards 3d‐metal(II) hexamethyldisilazanides is described. This leads to formation of the three‐coordinated phosphinidene adducts [M{PH(sIDipp)}{N(SiMe3)2}2] (M=Mn−Co), as evidenced by X‐Ray diffraction analysis. In solution, all compounds exhibit strong paramagnetism that limited NMR spectroscopic examinations to cobalt. Here it shows that the system is coordinatively highly fluxional, which is mitigtated upon cooling. At low temperatures, small amounts of free phosphinidene becomes further evident by 31P NMR spectroscopy that implicates in part ligand coordination competes with [M{N(SiMe3)2}2] dimerisation and an overall weak binding of the phosphinidene ligand. The rapid chemical exchange is evidenced in the presence of an excess of phosphinidene or a phosphine (PCy3), whereas diethyl ether proved as a stronger donor ligand. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00442313
- Volume :
- 648
- Issue :
- 17
- Database :
- Academic Search Index
- Journal :
- Zeitschrift für Anorganische und Allgemeine Chemie
- Publication Type :
- Academic Journal
- Accession number :
- 159085738
- Full Text :
- https://doi.org/10.1002/zaac.202100338