Joobeom Seo, Won-Joo Jo, Green Choi
2007
Citations
0
Influential Citations
12
Citations
Journal
Dyes and Pigments
Abstract
Abstract Crystals of C.I. Disperse Brown 1, an aminoazobenzene derivative, were grown from an ethanol solution and the crystal structure was determined by single crystal X-ray diffraction analysis. The dye molecule crystallizes in the orthorhombic Fdd2 space group with the unit cell dimensions: a = 30.6593(17) A, b = 32.2928(18) A, c = 7.3738(4) A, α = β = γ = 90°, V = 7300.6(7) A3. Results showed that the 4-nitro-4′-aminoazobenzene skeleton is non-planar, with a dihedral angle of 45.53° between the phenyl rings presumably to minimize the repulsive force between Cl atoms in each ring. Several types of intra- and intermolecular hydrogen bonds, together with anti-parallel interlayer π–π stacking interaction also stabilize the molecular conformation. In particular, two aminoalcohol chains form a pseudo-cycle by strong O–H⋯O intramolecular hydrogen bond.