Reactivity of binuclear heterobridged iridium complexes with SnCl2

  1. Pinillos, M.T. 1
  2. Elduque, A. 1
  3. López, J.A. 1
  4. Lahoz, F.J. 1
  5. Oro, L.A. 1
  6. Mann, B.E. 2
  1. 1 Instituto de Nanociencia y Materiales de Aragón
    info

    Instituto de Nanociencia y Materiales de Aragón

    Zaragoza, España

    ROR https://ror.org/031n2c920

  2. 2 University of Sheffield
    info

    University of Sheffield

    Sheffield, Reino Unido

    ROR https://ror.org/05krs5044

Revista:
Journal of the Chemical Society, Dalton Transactions

ISSN: 1472-7773

Año de publicación: 1992

Volumen: 15

Páginas: 2389-2393

Tipo: Artículo

DOI: 10.1039/DT9920002389 SCOPUS: 2-s2.0-37049082900 GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: Journal of the Chemical Society, Dalton Transactions

Resumen

The complex [Ir2(μ-pz)(μ-SBut)(CO)2{P(OMe) 3}2] 1 (pz = pyrazolate) reacts with HgX2 (X = Cl or I) (1: 2 molar ratio) to give the oxidation compounds [Ir2(μ-pz)-(μ-SBut)X2(CO) 2{P(OMe)3}2] (X = Cl 2 or I 3). The addition of SnCl2 to solutions of 2 or 3 leads to the trihalogenotin iridium complexes [Ir2(μ-pz)(μ-SBut)(μ-SnCl2X) 2(CO)2{P(OMe)3}2] (X = Cl 4 or I 5]. Treating 1 with SnCl2 affords the adduct [Ir2(μ-pz)(μ-SBut)(μ-SnCl2)(CO) 2{P(OMe)3}2] 6. The formulation of the compounds has been deduced by elemental analysis, IR, 31P and 119Sn NMR spectroscopy. The structure of one isomer of 4 (4a) has been determined by X-ray diffraction methods: triclinic, space group P1, with a = 11.896(2), b = 12.863(2), c = 13.943(3) Å, α = 69.27(1), β = 68.21(1), γ = 66.47(1)°, and Z = 2. The complex is binuclear with the metal atoms bridged by a pyrazolate and a SBut ligand. The Ir-Ir distance, 2.7221(6) Å, indicates the presence of a metal-metal bond.