Preparation and reactivity of dinuclear complexes having the M2(μ-Pz)(μ-SBut)(μ-dppm) core (M=Rh, Ir; Pz=pyrazolate)

  1. Pinillos, M.T. 1
  2. Elduque, A. 1
  3. Oro, L.A. 1
  1. 1 Instituto de Nanociencia y Materiales de Aragón
    info

    Instituto de Nanociencia y Materiales de Aragón

    Zaragoza, España

    ROR https://ror.org/031n2c920

Revista:
Inorganica Chimica Acta

ISSN: 0020-1693

Ano de publicación: 1990

Volume: 178

Número: 2

Páxinas: 179-183

Tipo: Artigo

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DOI: HTTP://DX.DOI.ORG/10.1016/S0020-1693(00)86779-1 SCOPUS: 2-s2.0-0002674523 GOOGLE SCHOLAR

Outras publicacións en: Inorganica Chimica Acta

Resumo

The reaction of [M2(μ-Pz)(μ-SBut)(COD)2] with carbon monoxide and bis(diphenylphosphino)methane yields the triply heterobridged complexes [M2(μ-Pz)(μ-SBt)(μ-dppm)(CO)2], M=Rh, Pz=pz (1); M=Ir, Pz=pz (2), dmpz (3). The complexes 1-3 are oxidized by molecular iodine to [M2(μ-Pz)(μ-SBut)(μ-dppm)I2(CO)2], M=Rh, Pz=pz (4); M=Ir, Pz=pz (5), dmpz (6). Complexes 4-6 undergo halide abstraction with silver nitrate to form [M2(μ-Pz)(μ-SBut)(μ-dppm)(NO3)2(CO)2], M=Rh, Pz=pz (7); M=Ir, Pz=pz (8), dmpz (9). Complexes 2 and 3 react with mercury(II) chloride in 1:1 mole ratio to give the iridium(III)-iridium(I) complexes [Ir2(μ-Pz)(μ-SBut)(μ-dppm)(μ-HgCl)Cl(CO)2], Pz=pz (10), dmpz (11) resulting from oxidative addition of HgCl2 to one metal centre. Interaction of the mixed oxidation state complexes 10 and 11 with mercury(II) chloride affords the diiridium(II) compounds [Ir2(μ-Pz)(μ-SBut)(μ-dppm)Cl2(CO)2], Pz=pz (12), dmpz (13). © 1990.