In the title compound, C₁₅H₁₄FNO₃S₂, the 2H-chromene ring system is close to being planar (r.m.s. deviation = 0.024 Å) and the morpholine ring adopts a chair conformation. The dihedral angle between the 2H-chromene ring system and the morpholine ring (all atoms) is 88.21 (11)°. In the crystal, inversion dimers linked by pairs of very weak C—HF hydrogen bonds generate R₂²(8) loops; C—HO hydrogen bonds connect the dimers into [010] chains. Weak aromatic π–π stacking inter­actions between the pyran rings of the chromene systems [centroid–centroid distance = 3.6940 (16) Å] are also observed.

The carbazole unit of the title mol­ecule, C₁₅H₉NO₃, is planar and forms dihedral angles of 3.08 (4)° with the attached carbaldehyde group and 0.75 (4)° with the fused oxazine ring. The dihedral angle between the two benzene rings is 2.09 (4)°. The structure is stabilized by inter- and intra­molecular C—HO hydrogen bonds.

The carbazole unit of the title mol­ecule, C₁₅H₁₅NO₃, is not planar. The dihedral angle between the benzene ring and the fused pyrrole ring is 0.53 (2)°. The cyclo­hexene ring is in half-chair form. The methyl ­acetate group at position 2 has a equatorial orientation. In the crystal structure, the mol­ecules are stabilized by inter­molecular N—HO and C—HO hydrogen bonds.

The heterofused carbazole unit of the title compound, C₁₅H₁₃N₃O₂, is not planar. The planar pyrazole ring forms dihedral angles of 2.52 (8)°, 3.18 (7)° and 2.22 (6)° with the pyrrole ring, the benzene ring and the attached carboxyl­ate group respectively. The cyclo­hexene ring adopts a half-chair conformation. In the crystal structure, the mol­ecules are stabilized by inter­molecular N—HO and O—HN hydrogen bonds.

The carbazole unit of the title mol­ecule, C₁₄H₁₁NO₂, is planar. The hydr­oxy group at position 1, carbaldehyde group at position 2, and methyl group at position 3 (with the exception of two H atoms) are coplanar with the attached benzene ring. The dihedral angle between the two benzene rings is 3.57 (8)°. The pyrrole ring makes dihedral angles of 1.53 (9) and 2.06 (9)° with the unsubstituted and substituted benzene rings, respectively. The structure is stabilized by inter- and intra­molecular N—HO and O—HO hydrogen bonds.

The heterofused carbazole unit of the title compound, C₁₅H₁₃N₃, is planar. The planar pyrazole ring forms dihedral angles of 1.08 (7), 0.64 (6) and 2.60 (7)° with the pyrrole, fused benzene and methyl-substituted benzene rings, respectively. The methyl group on the five-membered ring is disordered equally over two positions. In the crystal structure, the mol­ecules are stabilized by inter­molecular N—HN hydrogen bonds.

The carbazole unit of the title mol­ecule, C₁₂H₁₀ClNO, is not planar. The dihedral angle between the benzene and pyrrole rings is 1.35 (10)°. The cyclo­hexene ring adopts an envelope conformation. In the crystal structure, inter­molecular N—HO hydrogen bonds form centrosymmetric dimers.

The carbazole unit of the title mol­ecule, C₁₃H₁₃NO₂, is not planar. The dihedral angle between the benzene ring and the pyrrole ring is 1.69 (6)°. The cyclo­hexene ring adopts an envelope conformation. Inter­molecular C—HO and N—HO hydrogen bonds are present in the crystal structure. A C—Hπ inter­action, involving the benzene ring, is also found in the crystal structure.

In the title mol­ecule, C₁₃H₁₃NO, the dihedral angle between the benzene and pyrrole rings is 1.05 (5)°. The cyclo­heptene ring adopts a slightly distorted boat conformation. In the crystal structure, inter­molecular N—HO hydrogen bonds form centrosymmetric dimers. A C—Hπ inter­action, involving the benzene ring, is also found in the structure.

The carbazole unit of the title mol­ecule, C₁₅H₁₅NO₃, is not planar. The dihedral angle between the benzene ring and the fused pyrrole ring is 0.9 (1)°. The cyclo­hexene ring is in a half-chair form. The ester group has an equatorial orientation. In the crystal structure, the mol­ecules are stabilized by inter­molecular C—HO hydrogen bonds.

The title mol­ecule, C₁₅H₁₂N₂O, is essentially planar, except for the methyl H atoms. The mean plane of the isoxazole ring forms dihedral angles of 2.27 (9), 0.66 (8) and 3.97 (9)° with the pyrrole, fused benzene and methyl-substituted benzene rings, respectively. There is a short inter­molecular contact between inversion-related isoxazole O atoms [OO = 2.696 (1) Å]. In the crystal structure, mol­ecules are stabilized by inter­molecular N—HO and N—HN hydrogen bonds.

In the title mol­ecule, C₁₄H₁₃NO₃, the dihedral angle between the benzene ring and the fused pyrrole ring is 1.0 (1)°. The cyclo­hexene ring adopts a twist conformation. Three C atoms of the cyclo­hexene ring, with their attached H atoms, and all atoms of the ester group, are disordered over two positions; the site-occupancy factors are ca 0.88 and 0.12. The crystal structure is stabilized by inter­molecular N—HO and C—HO hydrogen bonds.

The carbazole unit of the title mol­ecule, C₁₃H₁₃NO, is not planar. The dihedral angle between the benzene ring and the fused pyrrole ring is 2.5 (1)°. The cyclo­hexene ring is in an envelope form. There is an intra­molecular C—HO hydrogen bond.