Dichlorido(4-methylaniline-κN)[N-(4-methylphenyl)-1-(thiophen-2-yl)methanimine-κN]palladium(II)

The structure of a mono-amine Pd-II complex, [PdCl2(C7H9N)(C12H11NS)], which crystallizes in the triclinic space group, P (1) over bar, is reported. The primary geometry around the Pd-II atom closely resembles square planar (tau(4)' = 0.069). In the (E)-1-(thiophen-2-yl)-N-(p-tolyl)methanimine ligand, the phenyl and thiophene rings are not coplanar, subtending a dihedral angle of 38.5 (1)degrees because of steric effects. The PdCl2N2 coordination plane is almost perpendicular to the planes of the coordinated o-toluidine and the NC2 fragment [dihedral angles of 84.7 (1) and 72.50 (4)degrees, respectively]. The Pd-NH2 length of 2.040 (2) angstrom is slightly shorter than the observed mean value for other complexes involving a Pd atom attached to the nitrogen of an aniline derivative. The molecules display an interesting supramolecular synthon based on reciprocal intermolecular N-H center dot center dot center dot Cl hydrogen-bonding interactions of the p-toluidine amine fragment, which results in centrosymmetric dimeric units. These units are further linked by C-H center dot center dot center dot Cl interactions, resulting in chains in the c-axis direction where the meanplanes of the repeating fragment are oriented in the (110) plane.