(S)-(+)-1-(4-Bromo-phen-yl)- N-[(4-methoxyphen-yl)methyl-idene]ethyl-amine and bis-{(S)-(+)-1-(4-bromo-phen-yl)- N-[(4-methoxyphen-yl)methyl-idene]ethyl-amine-κ N}di-chlorido-palladium(II)

Abstract

The (S)-(+)-1-(4-bromo-phen-yl)-N-[(4-methoxyphen-yl)methyl-idene]ethyl-amine ligand, C₁₆H₁₆BrNO, (I), was synthesized through the reaction of 4-meth-oxy-anisaldehyde with (S)-(-)-1-(4-bromo-phen-yl)ethyl-amine. It crystallizes in the ortho-rhom-bic space group P2₁2₁2₁ belonging to the Sohncke group, featuring a single mol-ecule in the asymmetric unit. The refinement converged successfully, achieving an R factor of 0.0508. The Pd^II com-plex bis-{(S)-(+)-1-(4-bromo-phen-yl)-N-[(4-methoxyphen-yl)methyl-idene]ethyl-amine-κN}di-chlorido-pal-ladium(II), [PdCl₂(C₁₆H₁₆BrNO)₂], (II), crystallizes in the monoclinic space group P2₁ belonging to the Sohncke group, with two mol-ecules in the asymmetric unit. The central atom is tetra-coordinated by two N atoms and two Cl atoms, resulting in a square-planar configuration. The imine moieties exhibit a trans configuration around the Pd^II centre, with average Cl-Pd-N angles of approximately 89.95 and 90°. The average distances within the palladium com-plex for the two mol-ecules are ∼2.031 Å for Pd-N and ∼2.309 Å for Pd-Cl.

Keywords: Schiff base; crystal structure; monodentate; palladium(II) com­plex.