Search

The asymmetric unit of the title compound, C8H10NO2+·Cl−·H2O, contains two crystallographically independent 2-(methoxy­carbon­yl)anilinium cations related by a pseudo-inversion centre, two chloride ions and two water mol­ecules. A three-dimensional network structure is formed via N—H⋯O, N—H⋯Cl and O—H⋯Cl hydrogen bonds, and π–π stacking inter­actions.

In the title compound, C12H10O3, there are two independent mol­ecules in the asymmetric unit. Both mol­ecules are essentially planar and each features an intra­molecular O—H⋯O hydrogen bond between the hydr­oxy H atom and the carbon­yl O atom. The crystal structure is stabilized by π–π stacking inter­actions.

In the title crystal structure, C9H12NO2+·Cl−, inter­molecular N—H⋯Cl hydrogen bonds link cations and anions to form one-dimensional ladders propagating in the a-axis direction.

In the title compound, C8H7BrO3, an intra­molecular hydrogen bond exists between the hydroxyl group and the O atom of the carbonyl group. The mol­ecules are stacked along the b axis with weak π–π inter­actions.

The molecule of the title compound, C11H12N2O6, is essentially planar except for the alkyl chain, which has a non-extended conformation.

In the title compound, C10H11NO5, all bond lengths and angles show normal values. Weak inter­molecular O—H⋯O hydrogen bonds form centrosymmetric dimers, which are further linked by π–π inter­actions into ladders extending along the a axis.

In the title compound, C7H13NO4, there are two independent mol­ecules in the asymmetric unit. All bond lengths and angles in the mol­ecules are in normal ranges. The ψ1 and ψ2 torsion angles are 159.9 (4) and −23.4 (5)°, respectively, in the first molecule, and the ψ3 and ψ4 torsion angles 157.7 (4) and −26.7 (5)°, respectively, in the second. Each of the independent mol­ecules has a different comformation. The translationally and screw-related mol­ecules are connected by N—H⋯O hydrogen bonds, forming a two-dimensional network parallel to the ac plane.

The title compound, C10H10N2O6, has two independent mol­ecules in the asymmetric unit. All bond lengths and angles in the mol­ecules are in normal ranges. The crystal packing is stabilized by van der Waals forces and π–π stacking interactions.

In the title compound, C10H10N2O6, the dinitro­benzoate moiety is nearly planar. In the crystal structure, the mol­ecules are stacked along the b axis, without any π–π inter­action.

The structure of the title compound, C8H6N2O6, is essentially planar, except for the meth­yl H atoms. In the crystal structure, the mol­ecules are stacked along the a axis with π–π inter­actions.

In the title mol­ecule, C8H7NO4, the non-H atoms are essentially coplanar. In the crystal structure, short inter­molecular O⋯C (3.21 A) and O⋯N (3.17 A) contacts indicate the presence of π–π inter­actions.

The asymmetric unit of the title compound, C8H7NO5, contains two crystallographically independent mol­ecules. In both mol­ecules, an intramolecular hydrogen bond exists between the hydroxyl group and the O atom of the carbonyl group. The mol­ecules are stacked, with weak π–π interactions, along the a axis.

In the title compound, C13H12O3, there are two independent molecules in the asymmetric unit. Both the molecules are nearly planar and an intramolecular O—H⋯O hydrogen bond is observed between the hydroxy group and the O atom of the carbonyl group. The crystal structure is stabilized by π–π stacking interactions.

The title compound, C8H6N2O7, crystallizes with an intramolecular hydrogen bond between the hydroxyl group and the O atom of the carbonyl group. A weak intermolecular hydrogen bond between the hydroxyl group and a nitro O atom forms planes parallel to the b axis.