N,N′-Bis(4-chlorobenzylidene)-3,3′-dimethoxybiphenyl-4,4′-diamine

Abstract

The title compound, C28H22Cl2N2O2, crystallized with two independent mol­ecules (A and B) in the asymmetric unit. The two mol­ecules differ essentially in the orientation of the outer aromatic rings. These dihedral angles are 56.07 (13) and 27.62 (15) Å for mol­ecules A and B, respectively. In the crystal, A mol­ecules are related as centrosymmetric pairs through a weak π–π inter­action [centroid–centroid distance = 3.6959 (15) Å]. There are also a number of inter­molecular C—H⋯O, C—H⋯N and C—H⋯π inter­actions present.

Crystal structure ofN,N′-dibenzyl-3,3′-dimethoxybenzidine

“…Hydrogen-bond geometry (Å , ). benzidine conformation include 3,3 0 -dipropoxybenzidine (El-Shafei et al, 2003), N,N-bis(diphenylphosphino)benzidine (Kayan et al, 2012) and N,N 0 -bis(4-chlorobenzylidene)-3,3 0dimethoxybiphenyl-4,4 0 -diamine (Subashini et al, 2011).…”