N-(3,5-Di-chloro-4-hy-droxy-phen-yl)acetamide

The title compound, C₈H₇Cl₂NO₂, crystallizes in the triclinic space group P1 with three mol-ecules in the asymmetric unit. Two of them are essentially planar, with mean deviations of 13 non-hydrogen atoms of 0.029 and 0.030 Å, and differ only in the conformation of the O-H hydrogen atom. The third mol-ecule is quite nonplanar, with the CCNO acetamide plane forming a dihedral angle of 67.56 (5)° with the remainder of the mol-ecule. In the extended structure, the two almost planar mol-ecules form anti-parallel hydrogen-bonded chains through N-H⋯O inter-actions of the acetamide substituents. The N-H group of the nonplanar mol-ecule donates a bifurcated hydrogen bond to the O-H group and a Cl substituent of one of the planar mol-ecules. The O-H groups of all mol-ecules form inter-molecular hydrogen bonds to other O-H groups or carbonyl O atoms. Together, the hydrogen bonds generate a three-dimensional network.