2-Phosphinophenolate complexes:: Formation and crystal structure of a novel trinuclear μ-O nickel(II)-tris(P∧O- chelate)

A novel linear trinuclear mu-O-bridging 2-phosphinophenolate nickel(II) complex with fac-tris(p(boolean AND)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((PO-)-O-boolean AND chelate).