The asymmetric unit of the title compound, C(18)H(20)Cl(6)N(2)Si(2), contains one half of the centrosymmetric mol-ecule. The two benzene rings are perpendicular to the plane of Si-N-C=C-N-Si fragment, making a dihedral angle of 89.9 (1)°. The crystal packing exhibits short inter-molecular Cl⋯Cl contacts of 3.3119 (17) Å.