Synthese und Eigenschaften von zwei-, drei- und vierkernigen Übergangsmetallkomplexen mit den metallorganischen Chelatliganden [C5H5M{P(OMe)2O}2]⊖ (M = Ni, Pd) [1] / Synthesis and Properties of Bi-, Tri- and Tetranuclear Transition Metal Complexes with the Organometallic Chelate Ligands [C5H5M{P(OMe)2O}2]⊖ (M = Ni, Pd) [1]

Abstract

The compounds C₅H₅M[{P(OMe)₂O}₂H] and C₅H₅M[{P(OMe)₂O}₂]Q (M = Ni, Pd; Q = NH₄, Tl) react with metal acetylacetonates M'(acac)_n and metal chlorides M'Cl_n to give the tri-and tetranuclear complexes C₅H₅M[{P(OMe)₂O}₂]_nM' [n = 2 or 3; M' = Co(II), Cu(II), Zn(II), VO, Al(III), Cr(III), Fe(III)]. The mixed-ligand complexes [C₅H₅Ni{P(OMe)₂O}₂]₂Ni(NH₃)₂, [C₅H₅Ni{P(OMe)₂O}2]Ni(acac), [C₅H₅Pd{P(OMe)₂O}₂]VO(acac), [C₅H₅M{P(OMe)₂O}2]Pd(2-RC₃H₄) (M = Ni, Pd; R = Me, Bu^t) and [C₅H₅Ni{P(OMe)₂O}₂]Rh(C₈H₁₂) are obtained following similar synthetic routes. Thermolysis of [C₅H₅Ni{P(OMe)₂O}₂]₂Ni(NH₃)₂ in vacuo leads to the trinuclear nickel complex [C₅H₅Ni{P(OMe)₂O}₂]₂Ni. The magnetic properties as well as the IR, NMR, UV and ESR spectra of the new organometallic chelate complexes are discussed.