370567-76-3Relevant articles and documents
Synthesis of chelate complexes and the dichalcogen derivatives of the unsymmetrical diphosphine ligand Ph2PNHC6H4PPh2. Molecular structure of [PtCl2(Ph2PNHC6H4PPh 2)]·0.75dmso·0.75CHCl3
Aucott,Slawin,Woollins
, p. 2279 - 2287 (2007/10/03)
[M(η3-C3H5)(L)][Cl] (M = Pt or Pd and L = Ph2PNHC6H4PPh2), [MX2(L)] (where M = Pt, X = Me, Cl, Br or I and where M = Pd or Ni X = Cl), [PtMeCl(L)], [Mo(CO)4(L)] and [(AuCl)2(L)] have been synthesised. In all complexes except [(AuCl)2(Ph2PNHC6H4PPh 2)] where the diphosphine acts as a bridging ligand between the two metal centres a chelating coordination mode is observed. We have also prepared and characterised the dichalcogen compounds Ph2P(E)NHC6H4P(E)Ph2 (where E = O, S or Se) and found that the disulfide reacts cleanly with [PdCl2(PhCN)2] in dichloromethane or Na2[PdCl4] in ethanol with elimination of HCl to give the unusual neutral N-metallated species [PdCl(Ph2P(S)NC6H4P(S)Ph2-S,N, S)], which contains both S-P-C-C-N-Pd six and N-P-S-Pd four-membered metallacycles. The cationic species [Pd(PPh3)(Ph2P(S)NC6H4P(S)Ph 2-S,N,S)][ClO4] was generated by the sequential addition of first Ag[ClO4] followed by PPh3 to the neutral chloride. The molecular structure of [PtCl2(Ph2PNHC6H4PPh 2)]·0.75dmso·0.75CHCl3, which reveals a puckered ring and displays hydrogen-bonding interactions between the ligand amine proton and the oxygen atom of the dmso molecule, has been determined by single crystal X-ray diffraction.
