Synthesis and crystallographic characterisation of a homologous series of bis-tridentate phosphine oxide NP3O3 Fe(II), Co(II), Ni(II) and Cu(II) complexes

The synthesis and characterization of a halfsandwich cobalt(II) complex supported by a bidentate, pendentamine phosphine ligand (P Ph 2 N Bn 2 = 1,5-diaza-3,7-diphosphacyclooctane) are reported. Oxidation of a cobalt(I)-phosphine precursor with silver(I) salts yielded the paramagnetic complex [CpCo(P Ph 2 N Bn 2 )] + . This species rapidly reacts with oxygen upon air exposure under ambient conditions, resulting in the insertion of oxygen into the cobalt-phosphine bonds. Two cobalt complexes were generated from this reaction: the cobaltocenium cation, bearing two Cp ligands (Cp = cyclopentadienyl); and a cobalt(II)bis(phosphine oxide) dicationic complex in which two O 2 P 2 N 2 ligands coordinate in a fac fashion via two oxygen and one nitrogen centers to establish an overall octahedral geometry. Thus, the aerobic oxidation of the phosphine induces the exchange and rearrangement of the ligands at cobalt.

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Synthesis and crystallographic characterisation of a homologous series of bis-tridentate phosphine oxide NP3O3 Fe(II), Co(II), Ni(II) and Cu(II) complexes

Cited by 2 publications

References 31 publications

Synthesis and characterisation of a range of Fe, Co, Ru and Rh triphos complexes and investigations into the catalytic hydrogenation of levulinic acid

Synthesis and characterisation of a range of Fe, Co, Ru and Rh triphos complexes and investigations into the catalytic hydrogenation of levulinic acid

Oxidation-Induced Ligand Swap: Oxygen Insertion into a Cobalt-Phosphine Complex

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