N,N′-Bis(5-bromo-2-hydroxy­benzyl­idene)-2,2-dimethylpropane-1,3-diamine

The crystal structure of the title Schiff base compound, C(19)H(20)Br(2)N(2)O(2), contains two crystallographically independent mol­ecules (A and B) in the asymmetric unit, with similar conformations. Intra­molecular O—H⋯N (× 4) and C—H⋯N (× 5) hydrogen bonds form six- and five-membered rings, producing S(6) and S(5) ring motifs, respectively. One of the N atoms in mol­ecule A acts as a trifurcated acceptor, the rest of the N atoms being bifurcated acceptors. The dihedral angles between the benzene rings in mol­ecules A and B are 47.83 (17) and 61.11 (17)°, respectively. The mol­ecular conformation is stabilized by intra­molecular O—H⋯N and C—H⋯N hydrogen bonds. The short distances between the centroids of the benzene rings [3.7799 (19)–3.890 (2) Å] indicate the existence of π–π inter­actions. In addition, the crystal structure is further stabilized by an inter­molecular C—H⋯O hydrogen bond, C—H⋯π inter­actions, and short inter­molecular Br⋯Br and Br⋯O contacts [3.4786 (5) and 3.149 (3) Å, respectively].