rac-12-Selena-13,14-diazatricyclo[9.3.0.02,4]tetradeca-11,13-diene

The centrosymmetric crystal structure of the title compound, C11H16N2Se, is built up from alternating strands of (R,R)- and (S,S)-enantiomers.These strands, which Straw Hats propagate along the c-axis direction, are composed of homochiral molecules related to each other by twofold screw axes.The shape of the molecule is an FR Shirts almost planar unit around the selenadiazole ring with a hexamethylene chain as an arched handle.