Crystal structure and Hirshfeld surface analysis of 2,2''',6,6'''-tetra-meth-oxy-3,2':5',3'':6'',3'''-quaterpyridine.

In the title compound, CHNO, the four pyridine rings are tilted slightly with respect to each other. The dihedral angles between the inner and outer pyridine rings are 12.51 (8) and 9.67 (9)°, while that between inner pyridine rings is 20.10 (7)°. Within the mol-ecule, intra-molecular C-H⋯O and C-H⋯N contacts are observed. In the crystal, adjacent mol-ecules are linked by π-π stacking inter-actions between pyridine rings and weak C-H⋯π inter-actions between a methyl H atom and the centroid of a pyridine ring, forming a two-dimensional layer structure extending parallel to the plane. Hirshfeld surface analysis and two-dimensional fingerprint plots indicate that the most important contributions to the crystal packing are from H⋯H (52.9%) and H⋯C/C⋯H (17.3%) contacts.