Trichlorido(dimethyl sulfoxide-κO)(di-2-pyridylamine-κ2 N,N′)indium(III)

In the title compound, [InCl3(C10H9N3)(C2H6OS)], the InIII atom is six-coordinated in a distorted octahedral geometry by two N atoms from a chelating di-2-pyridylamine ligand, one O atom from a dimethyl sulfoxide ligand and three Cl atoms. Intermolecular C—H⋯Cl hydrogen bonds and π–π contacts between the pyridine rings [centroid–centroid distance = 3.510 (3) Å] are present in the crystal.

In the title compound, [InCl 3 (C 10 H 9 N 3 )(C 2 H 6 OS)], the In III atom is six-coordinated in a distorted octahedral geometry by two N atoms from a chelating di-2-pyridylamine ligand, one O atom from a dimethyl sulfoxide ligand and three Cl atoms. Intermolecular C-HÁ Á ÁCl hydrogen bonds andcontacts between the pyridine rings [centroid-centroid distance = 3.510 (3) Å ] are present in the crystal.

Experimental
Crystal data [InCl 3 (C 10 Table 1 Hydrogen-bond geometry (Å , ).  In the title compound ( Fig. 1), the In III atom is six-coordinated in a distorted octahedral geometry by two N atoms from a chelating DPA ligand, one O atom from a dimethyl sulfoxide ligand and three Cl atoms. In the crystal, intermolecular C -H···Cl hydrogen bonds (Table 1, Fig. 2) and π-π contacts between the pyridine rings, Cg3···Cg3 i [symmetry code: (i) - x, -y, -z. Cg3 is the centroid of the N3/C6-C10 ring], with a centroid-centroid distance of 3.510 (3) Å, stabilize the structure.

Experimental
For the preparation of the title compound, a solution of di-2-pyridylamine (0.29 g, 1.65 mmol) in methanol (10 ml) was added to a solution of InCl 3 .4H 2 O (0.48 g, 1.65 mmol) in methanol (10 ml) at room temperature. The suitable crystals for X-ray diffraction analysis were obtained by methanol diffusion into a colorless solution in DMSO after one week (yield: 0.57 g, 73.4%).

Figure 1
The molecular structure of the title compound. Displacement ellipsoids are drawn at the 30% probability level.

Figure 2
A packing diagram of the title compound. Hydrogen bonds are shown as dashed lines.

Trichlorido(dimethyl sulfoxide-κO)(di-2-pyridylamine-κ 2 N,N′)indium(III)
Crystal data where P = (F o 2 + 2F c 2 )/3 (Δ/σ) max = 0.007 Δρ max = 0.72 e Å −3 Δρ min = −0.61 e Å −3 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.