Transition Metal Chemistry

, Volume 11, Issue 7, pp 246–252 | Cite as

Synthesis and structure of new arylnickel(II) malonato-complexes

  • Giovanni Agnès
  • Jan C. J. Bart
  • Mario Calcaterra
  • Walter Cavigiolo
  • Claudio Santini
Full Papers


Interaction of malonate anions with chloro(aryl)bis(organophosphine)nickel(II) complexes leads to the formation of stable (aryl)(malonato)(organophosphine)nickel(II) species, as shown by i.r. and1H n.m.r. data. The crystal and molecular structure of (diethylmalonato-O,O)(α-naphthyl)(triphenylphosphine)nickel(II), determined by x-ray methods (space group P¯1,a=10.767(9),b=16.253(16),c=9.835(13)Å, α=108.97(10)0, β=106.08(10)0, γ=89.11(7)0,Z= 2;R= 0.070 for 3650 independent observed reflections), shows distorted square-planar O2PC coordination about the nickel with bond distances: Ni-P, 2.142(2)Å; Ni-O, 1.888(5) and 1.936(5)Å; Ni-C, 1.887(8)Å. The parameters and bonding of the triphenylphosphine-nickel and naphthyl moieties in the complex are normal, whereas considerable electron-delocalisation occurs in the planar ethylmalonate moiety. The σ-naphthyl ligand is oriented almost perpendicularly to the NiO2CP core-malonate plane.


Reflection Physical Chemistry Nickel Inorganic Chemistry Catalysis 
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Copyright information

© VCH Verlagsgesellschaft mbH 1986

Authors and Affiliations

  • Giovanni Agnès
    • 1
  • Jan C. J. Bart
    • 1
  • Mario Calcaterra
    • 1
  • Walter Cavigiolo
    • 1
  • Claudio Santini
    • 1
  1. 1.Istituto G. Donegani S.p.A.NovaraItaly

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