Binuclear Cu(I) and Mn(0) Complexes with a Tridentate Pyridine-NHC-Phosphane Ligand in a µ-κ 2 Ĉ,N -M;κ 1 P -M Coordination Mode
Résumé
The reaction of a non-symmetrical pyridine-NHC-phosphane (NĈP) ligand – generated in situ upon the deprotonation of the corresponding imidazolium salt – with equimolar amount of [Cu(NCMe)4](BF4) or Mn2(CO)10 leads to the formation of bimetallic complexes [Cu2(NĈP)2(NCMe)](BF4)2 and [Mn2(CO)7(NĈP)], respectively, in which the tridentate ligand exhibits an unusual µ-κ2Ĉ,N-M;κ1P-M coordination mode. According to NMR spectroscopy and mass spectrometry, the binuclear copper complex is in equilibrium in MeCN solution with two mononuclear species, namely [Cu(κ2Ĉ,P-NĈP)2](BF4) and [Cu(κ3-N,Ĉ,P-NĈP)(NCMe)](BF4).
Domaines
Chimie de coordinationOrigine | Fichiers produits par l'(les) auteur(s) |
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