Pyrazolate bridged dinuclear rhodium complexes. X-ray structure of [Rh(Pz)(CO)P(OPh)3]2

  1. Usón, R. 1
  2. Oro, L.A. 1
  3. Ciriano, M.A. 1
  4. Pinillos, M.T. 1
  5. Tiripicchio, A. 2
  6. Tiripicchio Camellini, M. 2
  1. 1 Universidad de Zaragoza
    info

    Universidad de Zaragoza

    Zaragoza, España

    ROR https://ror.org/012a91z28

  2. 2 University of Parma
    info

    University of Parma

    Parma, Italia

    ROR https://ror.org/02k7wn190

Revista:
Journal of Organometallic Chemistry

ISSN: 0022-328X

Año de publicación: 1981

Volumen: 205

Número: 2

Páginas: 247-257

Tipo: Artículo

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DOI: 10.1016/S0022-328X(00)81482-5 SCOPUS: 2-s2.0-0001231836 GOOGLE SCHOLAR

Otras publicaciones en: Journal of Organometallic Chemistry

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Resumen

The synthesis and properties of complexes of general formulae [Rh(Pz)(CO)L]2 (Pz = pyrazolate ion, L = phosphorus donor ligand), [Rh(Pz)(diolefin)]2 and [Rh(Pz)(C2H4)2]2 are reported. The crystal structure of the novel complex [Rh(Pz)(CO)P(OPh)3]2 has been determined by X-ray methods. The crystals are triclinic, space group P1, with Z = 2 in a unit cell of dimensions a 14.061(10), b 17.140(13), c 9.937(7) Å, α 102.19(7), β 10.9.55(8), γ 75.14(8)°. The structure has been solved by Patterson and Fourier methods and refined by full-matrix least-squares to R = 0.058 for 2514 independent observed reflections. The structure consists of discrete dimeric complexes in which each rhodium is in nearly square-planar arrangement, being bonded to a carbon atom of a carbonyl group, to a phosphorus of a triphenylphosphite ligand and to two nitrogen atoms of pyrazolate ligands bridging the metal atoms. The dihedral angle between the two square planes of 86.2° gives a bent configuration to the molecule in which the carbonyls and the phosphite ligands are in a trans arrangement. © 1981.