Reactions of Palladium(II) Chloride with Monoiminoacenaphthenones

The reaction of PdCl 2 with [2,6-diisopropylphenyl]iminoacenaphthenone (Dpp-mian) in dichloromethane affords compound [Pd(Dpp-mian)Cl 2 ] 2 [Pd(Dpp-mian) 2 Cl 2 ] ( I ). Complex I contains two structural units: [Pd(Dpp-mian)Cl 2 ] in which Dpp-mian coordinates to Pd(II) via the bidentate-chelate mode by the nitrogen and oxygen atoms and [Pd(Dpp-mian) 2 Cl 2 ] where two Dpp-mian molecules are linked with palladium only via the nitrogen atom. The reaction of PdCl 2 with [4-methoxyphenyl]iminoacenaphthenone (4-MeOPh-mian) in dichloromethane is accompanied by the rearrangement of the ligand structure followed by the formation of the earlier described Pd(II) complex with 1,2-bis[4-methoxyphenyl]iminoacenaphthene (4-MeOPh-bian): [Pd(4-MeOPh-bian)Cl 2 ] ( II ) (CIF file CCDC no. 2280529). Compound I is synthesized for the first time and characterized by X-ray diffraction (XRD) (CIF file CCDC no. 2280528 ( I )), phase XRD, elemental analysis, IR spectroscopy, and cyclic voltammetry.