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The title mol­ecule, C 17 H 16 N 4 , is a bis-indazole crystallized in the rare 2 H -tautomeric form. Indazole heterocycles are connected by a propane C 3  chain, and the mol­ecule is placed on a general position, in contrast to the analogous compound with a central C 2  ethane bridge, which was previously found to be placed on an inversion center in the same space group. In the title mol­ecule, indazole rings make a dihedral angle of 60.11 (7)°, and the bridging alkyl chain displays a  trans  conformation, resulting in a W-shaped mol­ecule. In the crystal, mol­ecules inter­act weakly through π–π contacts between inversion-related pyrazole rings, with a centroid–centroid separation of 3.746 (2) Å.

2,2′-(Propane-1,3-diyl)bis(2H-indazole)