Crystal structure ofN-(2,2,2-trichloro-1-hydroxyethyl)formamide
The title compound, C3H4Cl3NO2, crystallized with two independent molecules (AandB) in the asymmetric unit. The two molecules have the same conformation; the molecular overlap gives weighted and unit-weight r.m.s. fits of 0.047 and 0.043 Å, respectively. The conformation of theN-(hydroxethyl)formamide chains are very similar, as indicated by the C—N(H)—C=O and C—N(H)—C—O(H) torsion angles, which are, respectively, −1.8 (3) and −91.5 (2)° for moleculeA, and −2.1 (3) and −95.7 (2)° for moleculeB. In the crystal, individual molecules are linked by pairs of O—H...O hydrogen bonds, formingA–AandB–Binversion dimers withR22(12) ring motifs. The dimers are linkedviaN—H...O hydrogen bonds, forming alternating layers ofAandBmolecules parallel to thebcplane. Within the layers ofBmolecules, there are weak C—H...Cl hydrogen bonds present.