In the crystal of the title compound, C 7 H 6 N 2 Se, the molecules are arranged in rods along the b-axis direction and form dimeric units due to intermolecular SeÁ Á ÁN contacts of 2.982 (2) Å . The molecules are further linked by weakstacking interactions between the 2,1,3-selenadiazole and six-membered aromatic rings [centroid-centroid distance = 3.8509 (11) Å and ring slippage = 1.539 (3) Å ].
Structure descriptionOrganoselenium compounds are commonly found to be efficient catalysts in a variety of organic reactions, for example, the allylic chlorination of terpenic olefins (Boualy et al., 2016). Various selenoheterocyclic compounds are widely employed as ligands in asymmetric syntheses (Zhou et al., 2005). They are also used as structure motifs in bioactive molecules, such as antioxidants, anti-inflammatory agents, cytokine inducers, enzyme inhibitors, antitumor and anticancer agents (Mlochowski et al., 2007;Mugesh et al., 2001;Osajda et al., 2001).The molecule of the title compound ( Fig. 1) is almost planar [r.m.s. deviation for the non-H atoms = 0.008 Å ; maximum deviation = 0.012 (2) Å for atom C5]. In the crystal, molecules are arranged in rods along the b axis. As found for 4,5,6,7-tetramethyl-2,1,3-benzoselenadiazole and their co-crystals, intermolecular SeÁ Á ÁN interactions are also observed (Eichstaedt et al., 2016), forming dimeric units. The SeÁ Á ÁN distance in the title compound is 2.982 (2) Å . The dimers are further linked by weak -stacking interactions between the 2,1,3-selenadiazole and the six-membered aromatic rings [centroidcentroid distance = 3.8509 (11) Å and ring slippage = 1.539 (3) Å ] (Fig. 2).