N,N'-[2,2'-(Phenyl-aza-nedi-yl)bis-(ethane-2,1-di-yl)]dipicolinamide

Abstract

The asymmetric unit of the title compound, C22H23N5O2, contains two independent mol-ecules with similar conformations; the terminal pyridine rings are oriented at dihedral angles of 23.99 (8) and 18.07 (8)° with respect to the central benzene ring in one mol-ecule and 28.99 (8) and 23.22 (8)° in the other. In the crystal, N-H⋯O and weak C-H⋯O hydrogen bonds link the mol-ecules into a three-dimensional supra-molecular structure. Weak inter-molecular C-H⋯π inter-actions are also observed in the crystal.

Fig. 1.

The molecular structure of (I), showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 50% probability level and H atoms are shown as small spheres of arbitrary radii.

Fig. 2.

Representation of part of the lattice contents of (I), viewed approximately down the cell diagonal bisecting the b O a angle. Only selected interactions are shown for clarity. Atoms involved in hydrogen bonds are shown as balls of arbitrary radii. All other atoms and covalent bonds are represented as wires or sticks. [symmetry code: (i) 1+ x, y, z].

Fig. 3.

Representation of part of the lattice contents of (I), along the a axis, showing the hydrogen-bonded chains. Only selected interactions are shown for clarity. Atoms involved in hydrogen bonds are shown as balls of arbitrary radii. All other atoms and covalent bonds are represented as wires or sticks. [symmetry code: (i) 1–x, 1–y, 1–z; (ii) 1/2–x, 1/2+y, 3/2–z; (iii) 1/2+x, 1/2–y, –1/2+z].