Di-chlorido-(4-methyl-aniline-κ N)[ N-(4-methyl-phen-yl)-1-(thio-phen-2-yl)methanimine-κ N]palladium(II)

Abstract

The structure of a mono-amine Pd^II complex, [PdCl₂(C₇H₉N)(C₁₂H₁₁NS)], which crystallizes in the triclinic space group, P , is reported. The primary geometry around the Pd^II atom closely resembles square planar (τ₄' = 0.069). In the (E)-1-(thio-phen-2-yl)-N-(p-tol-yl)methanimine ligand, the phenyl and thio-phene rings are not coplanar, subtending a dihedral angle of 38.5 (1)° 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)°, respectively]. The Pd-NH₂ length of 2.040 (2) Å is slightly shorter than the observed mean value for other complexes involving a Pd atom attached to the nitro-gen of an aniline derivative. The mol-ecules display an inter-esting supra-molecular synthon based on reciprocal inter-molecular N-H⋯Cl hydrogen-bonding inter-actions of the p-toluidine amine fragment, which results in centrosymmetric dimeric units. These units are further linked by C-H⋯Cl inter-actions, resulting in chains in the c-axis direction where the mean-planes of the repeating fragment are oriented in the (110) plane.

Keywords: crystal structure; fingerprint plots; p-toluidine; palladium mono-amine complex.

Figure 1

Mol­ecular structure of Pd(HL ¹)L ²Cl₂ showing the atom-numbering scheme. Atomic displacement parameters are at the 30% probability level.

Figure 2

Packing diagram for Pd(HL ¹)L ²Cl₂ showing the inter­molecular N—H⋯Cl hydrogen-bonding inter­actions of the p-toluidine amine fragment resulting in centrosymmetric dimeric units that are further linked by inter­molecular C—H⋯Cl inter­actions, resulting in chains in the c-axis direction where the mean planes of the repeating fragment are oriented in the (110) plane.