1,3‐Bis[2‐(dimethylaminomethyl)phenyl]triselenide

The title compound, C₁₈H₂₄N₂Se₃, consists of discrete molecules; owing to the presence of strong intramolecular N...Se interactions N...Se = 2.671 (4) and 2.873 (4) Å], the chalcogen Se atoms of the angular Se₃ chain exhibit different coordination geometries, i.e. the terminal Se atoms are tricoordinated and exhibit a T‐shaped environment of the CNSe₂ core N...Se—Se = 173.73 (9) and 172.29 (9)°], while the central Se atom is dicoordinated to the other two Se atoms, with an Se—Se—Se angle of 108.32 (2)°.