cis-Dichloridobis(2-isocyanophenyl 4-methoxybenzoate)palladium(II) chloroform monosolvate

In the title compound, [PdCl2(C15H11NO3)2]·CHCl3, the PdII atom adopts a slightly distorted square-planar coordination geometry composed of two Cl atoms in cis positions and two C atoms from isocyanophenyl ligands. The molecular conformation is stabilized by π–π stacking interactions [shortest centroid–centroid distance = 3.600 (1) Å] between substituted benzene rings of different ligands. The crystal packing is characterized by C—H⋯O and C—H⋯Cl interactions involving the chloroform solvent molecules.

In the title compound, [PdCl 2 (C 15 H 11 NO 3 ) 2 ]ÁCHCl 3 , the Pd II atom adopts a slightly distorted square-planar coordination geometry composed of two Cl atoms in cis positions and two C atoms from isocyanophenyl ligands. The molecular conformation is stabilized bystacking interactions [shortest centroid-centroid distance = 3.600 (1) Å ] between substituted benzene rings of different ligands. The crystal packing is characterized by C-HÁ Á ÁO and C-HÁ Á ÁCl interactions involving the chloroform solvent molecules.

Experimental
The title compound was synthesized by the addition of 2 equiv of 2-isocyanophenyl-4-methoxybenzoate into a chloroform solution of [PdCl 2 (MeCN) 2 ]. The solid product was dissolved and recrystallized by slow evaporation from a solution of Et 2 O/CHCl 3 (1:1, v/v).

Refinement
All H atoms were positioned geometrically and constrained to ride on their parent atoms, with C-H = 0.95 Å and U iso = 1.2U eq (C) for aromatic H atoms, with C-H = 1.00 Å and U iso = 1.2U eq (C) for methine H atoms, and with C-H = 0.98 Å and U iso = 1.5U eq (C) for methyl H atoms. The highest peak is located 1.28 Å from atom Cl6 and the deepest hole is located 0.78 Å from atom Pd1.

Figure 1
The molecular structure of the title compound, with displacement ellipsoids drawn at the 50% probability level. H atoms are presented as small spheres of arbitrary radius.  (17) Special details Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. Refinement. Refinement of F 2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F 2 , conventional R-factors R are based on F, with F set to zero for negative F 2 . The threshold expression of F 2 > σ(F 2 ) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F 2 are statistically about twice as large as those based on F, and R-factors based on ALL data will be even larger.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å 2 )
x y z U iso */U eq