Abstract
The coordination chemistry
of the bidentate P,N hybrid ligand 2-
(2’-pyridyl)-4,6-diphenylphosphinine
(1) towards PdII and PtII has been investigated.
The molecular structures of
the complexes [PdCl2(1)] and
[PtCl2(1)] were determined by X-ray
diffraction, representing the first crystallographically
characterized l3-phosphinine–
PdII and –PtII complexes. Both
complexes reacted with methanol at
the P=C double bond at an elevated
temperature, leading to the corresponding
products [MCl2ACHTUNGTRENUNG(1H·OCH3)].
The molecular structure of [PdCl2-
ACHTUNGTRENUNG(1H·OCH3)] was determined crystallographically
and revealed that the reaction
with methanol proceeds selectively
by syn addition and exclusively to one
of the P=C double bonds. Strikingly,
the reaction of [PdCl2ACHTUNGTRENUNG(1H·OCH3)] with
the chelating diphosphine DPEphos at
room temperature in CH2Cl2 led quantitatively
to [PdCl2ACHTUNGTRENUNG(DPEphos)] and
phosphinine 1 by elimination of
CH3OH and rearomatization of the
phosphorus heterocycle.
| Original language | English |
|---|---|
| Pages (from-to) | 2510-2517 |
| Number of pages | 8 |
| Journal | Chemistry-A European Journal |
| Volume | 17 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2011 |