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In 2,2,2-trichloro- N, N′-bis(4-methoxyphenyl)ethane-1,1-diamine, C16H17Cl3N2O2, molecules are linked into helical chains by N—H...O hydrogen bonds. Molecules of 2,2,2-trichloro- N, N′-bis(4-chlorophenyl)ethane-1,1-diamine, C14H11Cl5N2, are connected into a three-dimensional framework by two independent Cl...Cl interactions and one C—H...Cl hydrogen bond. [ABSTRACT FROM AUTHOR]

In each of methyl 2-methyl-5-oxo-2-pyrroline-3-carboxylate, C7H9NO3, and 3-acetyl-2-methyl-2-pyrrolin-5-one, C7H9NO2, the pyrrolinone ring is planar. In each structure, molecules are linked into simple chains by way of a single N—H...O hydrogen bond. [ABSTRACT FROM AUTHOR]

The molecules of 2,2,2-trichloro- N, N′-diphenylethane-1,1-diamine, C14H13Cl3N2, are linked into (040) sheets by a combination of C—H...Cl and C—H...π(arene) hydrogen bonds. In 2,2,2-trichloro- N, N′-bis(4-methylphenyl)ethane-1,1-diamine, C16H17Cl3N2, the molecules are linked into C(7) chains by two independent C—H...Cl hydrogen bonds and one Cl...Cl contact. [ABSTRACT FROM AUTHOR]

In the title compound, C17H20O3S, the dihedral angle between the planes of the two aromatic rings is 66.5 (1)°. Weak C—H⋯O inter­actions are observed in the crystal structure. [ABSTRACT FROM AUTHOR]

The crystal packing of the title compound, C21H16N2S9, involves weak inter­molecular C—H⋯S inter­actions and inter­planar π–π stacking, generating a three-dimensional supra­molecular structure. [ABSTRACT FROM AUTHOR]

In the title compound, C18H24N2O6, the two pyrrolinone rings are planar and adopt anti conformations. The molecule lies on an inversion centre. The molecules are linked into a three-dimensional framework structure by three independent C—H...O hydrogen bonds. [ABSTRACT FROM AUTHOR]

In the title compound, C3H6N2O2S, the five-membered ring has an envelope conformation and the two hydroxyl groups lie on opposite sides of the ring. The crystal structure is stablized by intermolecular O—H...S and N—-H...O hydrogen bonds, and also a close O...O intermolecular approach, to form a two-dimensional network parallel to bc. [ABSTRACT FROM AUTHOR]