Acetimine and 2-methyl-2-amino-4-iminopentane complexes of palladium(II)

Article abstract of DOI:10.1021/om020434y

By reaction between the labile complex cis- [Pd(C₆F₅)₂(PhCN)₂] and aqueous ammonia-acetone solutions the palladium complexes [Pd(C₆F₅)₂L₂] [L = NH₃ (1), NHCMe₂ (2) and L₂ = NHC(Me)CH₂C(Me₂)NH₂ (3)] are obtained. The reaction product depends on the experimental conditions used. The cationic complexes [Pd(dmba)L₂]ClO₄ [L = NH₃ (5), NHCMe₂ (6) and L₂ = NH C(Me)CH₂C(Me₂)NH₂ (7)] with the N,C-chelating 2-(dimethylaminomethyl)phenyl (dmba) ligand have been obtained by treating [(dmba)Pd(μ-Cl)₂Pd-(dmba)] with AgClO₄ in aqueous ammonia-acetone solution. The mono(acetimine) complex [Pd(dmba)(PPh₃)(NHCMe₂)]ClO₄ (8) is obtained by a similar procedure starting from [Pd-(dmba)(PPh₃)Cl]. The crystal structures of 1-3 and 6 and 7 have been determined; there is extensive hydrogen bonding (N-H?F-C or N-H?OClO₃) in all the compounds.