Abstract
Formation of mono- and dinuclear complexes containing ligands stemmed from the condensation of 2,6-diformyl-4-methylphenol derivatives with 2-(diphenylphosphino)aniline ( P∼ N) was investigated. Condensation of P∼ N with 2,6-diformyl-4-methylanisole yielded the desired bis(imine-phosphine) L 3 , but provided the cyclized benzoazaphospholium compound with 2,6-diformyl-4-methylphenol. Complexation of L 3 with (COD)PdCl 2 gave the dinuclear complex 4. On the other hand, L 3 underwent the intramolecular cyclization in the presence of (DME)NiCl 2 via the formation of benzoazaphospholium rings. Template condensation of 2,6-diformyl-4-methylphenol with P∼ N in the presence of metal ions yielded the mononuclear nickel(II) and palladium(II) complexes, respectively.
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