1-Oxoisoindoline-2-carboxamide

(1R,3S)-1,1'-(1,3-Dihydro-2-benzofuran-1,3-diyl)bis(1,3-dimethyl-urea)

In the mol­ecule of the title compound, C₁₄H₂₀N₄O₃, the five-membered ring adopts an envelope conformation with the O atom displaced by 0.207 (3) Å from the plane of the other ring atoms. Intra­molecular C—H⋯O hydrogen bonds result in the formation of three five-membered rings having envelope conformations. In the crystal structure, inter­molecular N—H⋯O hydrogen bonds link the mol­ecules, forming R₂²(20) ring motifs, which produce two-dimensional polymeric sheets extending along the b axis. There are also two C—H⋯π inter­actions. The H atoms of one of the methyl groups are disordered over two positions and were refined with occupancies of 0.50.

1,3-Dimeth-oxy-2,3-dihydro-1H-isoindole-2-carbothio-amide

In the mol-ecule of the title compound, C(11)H(14)N(2)O(2)S, the five-membered ring adopts an envelope conformation and an intramolecular N-H⋯O hydrogen bond occurs. Intra-molecular N-H⋯O, C-H⋯S and C-H⋯N hydrogen bonds result in the formation of two five- and one six-membered rings, having twisted conformations. In the crystal structure, inter-molecular N-H⋯O, N-H⋯S and C-H⋯S hydrogen bonds link the mol-ecules, forming polymeric sheets. The π-π contacts between the isoindole ring systems, [centroid-centroid distances = 3.5883 (8) and 4.0619 (8) Å] may further stabilize the structure. A C-H⋯π inter-actions also occur.

N-Methyl-1-oxoisoindoline-2-carboxamide monohydrate

The title compound, C₁₀H₁₀N₂O₂·H₂O, is dimerized by inversion-related inter­molecular N—H⋯O hydrogen bonding. There is an intra­molecular N—H⋯O bond, resulting in a six-membered ring. Each dimer inter­acts with other dimers through hydrogen bonding with water mol­ecules. The water mol­ecules are linked to each other in a stair-like chain, thus generating two-dimensional polymeric strips. The dimers are also linked to each other through inter­molecular C—H⋯O hydrogen bonding. There are π–π inter­actions between the aromatic and heterocyclic five-membered rings [centroid–centroid distance 3.8360 (12) Å]. C—H⋯π inter­actions also exist between CH₂ groups and aromatic rings.