2-Phosphinophenolate Complexes: Formation and Crystal Structure of a Novel Trinuclear μ-O Nickel(II)-Tris(P^∩O^- Chelate)

A novel linear trinuclear μ-O-bridging 2-phosphinophenolate nickel(II) complex with fac-tris(P∩O- chelates) in the terminal positions and the three oxygen atoms each facing the central nickel(II) cation was synthesized and structurally characterized by X-ray crystallography. To the best of our knowledge, this is the first example of an octahedral Ni(II) tris(P∩O- chelate).