X-ray powder diffraction investigations of phenol derivatives

The X-ray powder diffraction patterns of three phenol derivatives-2-chlorophenol, 2,6-dichloro-4-nitrophenol, and 2,6-dichloro-phenoloindophenol tetrahydrate-were collected and the lattice parameters of these compounds were determined. The measurement for 2-chlorophenol was carried out at 250 K in a low-temperature chamber; this compound crystallizes in hexagonal system with a = 1.59602(8) nm, c = 0.59761(7) nm, space group P6 or P6(3)/m. Investigated at room temperature, 2,6-dichloro-4-nitrophenol and 2,6-dichloro-phenoloindophenol tetrahydrate crystallize in the triclinic system with the unit cell parameters refined to a = 0.8169(2) nm, b = 1.6637(6) nm, c=0.7440(1)nm, alpha=96.6(3)degrees, beta=116.19(2)degrees, gamma=78.68 degrees, and space group P-1(2), and a = 0.7792(3) nm, b = 1.2795(4) nm, c = 0.7256(3) nm, alpha=91.17(5)degrees, beta=96.93(4)degrees, gamma=85.41(3)degrees, and space group P-1(2), respectively. (c) 2004 International Centre for Diffraction Data.