Acta Cryst. (2008). E64, o1895-o1896  [ doi:10.1107/S160053680802816X ]

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

H.-K. Fun, R. Kia and H. Kargar

Abstract: The crystal structure of the title Schiff base compound, C₁₉H₂₀Br₂N₂O₂, contains two crystallographically independent molecules (A and B) in the asymmetric unit, with similar conformations. Intramolecular O-HN (× 4) and C-HN (× 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-HN and C-HN hydrogen bonds. The short distances between the centroids of the benzene rings [3.7799 (19)-3.890 (2) Å] indicate the existence of - interactions. In addition, the crystal structure is further stabilized by an intermolecular C-HO hydrogen bond, C-H interactions, and short intermolecular BrBr and BrO contacts [3.4786 (5) and 3.149 (3) Å, respectively].

Online 6 September 2008

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