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Issue 39, 2011
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Pd(II) and Ni(II) complexes featuring a “phosphasalen” ligand: synthesis and DFT study

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A phosphorus analog of salen ligands featuring iminophosphorane functionalities in place of the imine groups was synthesised in 2 steps from o-diphenylphosphinophenolvia the preparation of the corresponding bis-aminophosphonium salt. This novel tetradentate ligand (1), which we named phosphasalen, was coordinated to Pd(II) and Ni(II) metal centres affording complexes 6 and 7 respectively, which were characterised by multinuclear NMR, elemental and X-ray diffraction analyses. Both neutral complexes adopt a nearly square-planar geometry around the metal with coordination of all iminophosphorane and phenolate moieties. The electronic properties of these new complexes were investigated by cyclic voltammetry and comparison with known salens was made when possible. Moreover, the particular behaviour of the phosphasalen nickel complex 7 was further investigated through magnetic moment measurements and a DFT study.

Graphical abstract: Pd(ii) and Ni(ii) complexes featuring a “phosphasalen” ligand: synthesis and DFT study

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The article was received on 13 May 2011, accepted on 19 Jul 2011 and first published on 30 Aug 2011

Article type: Paper
DOI: 10.1039/C1DT10906E
Dalton Trans., 2011,40, 10029-10037

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    Pd(II) and Ni(II) complexes featuring a “phosphasalen” ligand: synthesis and DFT study

    T. Cao, S. Labouille, A. Auffrant, Y. Jean, X. F. Le Goff and P. Le Floch, Dalton Trans., 2011, 40, 10029
    DOI: 10.1039/C1DT10906E

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