Inter­molecular C—H...O, Cl...Cl and π–π inter­actions in the 2-di­chloro­methyl derivative of vitamin K₃

The title 1,4-naphtho­quinone is a chlorinated derivative of vitamin K₃, which is a synthetic compound also known as menadione. Mol­ecules are planar, lie on a crystallographic mirror plane (Z′ = 0.5) and are connected to each other by C—H...O hydrogen bonds, forming two-dimensional layers parallel to the ac plane.