Crystal and molecular structure studies of tris (2-hydroxy-3-t-butyl-5-methylbenzene)-methane trihydrate and N-benzyl-N-phenyl benzamide

The structures of the title compounds, tris(2-hydroxy-3-t-butyl-5-methylbenzene)-methane (C₃₄H₄₆O₃.3H₂O, 3) and N-benzyl-N-phenylbenzamide (C₂₀H₁₇NO, 6), have been investigated by X-ray crystallography. Compound 3 crystallizes in the trigonal space group P3 with cell parameters a = 14.090(5) Å, b = 14.090(5)Å, c = 10.485(5)Å, Z= 2. Compound 6 crystallizes in the monoclinic space group C2/c with cell parameters a = 24.533(4)Å, b =9.176(4)Å, c = 16.711(5)Å, β= 125.88(2)°, Z= 8. Compound 3 has both intra-and intermolecular hydrogen bonds. It also exhibits a helical columnar arrangement of the molecules and goes into mesophase before melting into an isotropic liquid.