organic compounds
The title compound, C14H11ClN2, is the key intermediate in the synthesis of the antihistaminic drug loratadine. The benzene and pyridine rings are connected through the ethylene bridge and are coplanar. There are intermolecular π–π and C—ClN interactions and weak hydrogen bonds stabilizing the packing.
organic compounds
In the title compound, C22H16N4, there are two crystallographically independent molecules, both of which are centrosymmetric and adopt a non-planar conformation.