1-Acetyl-t-3-ethyl-r-2,c-6-bis­(4-methoxy­phen­yl)piperidin-4-one

In the title compound, C23H27NO4, the piperidine ring adopts a distorted boat conformation. The meth­oxy groups lie in the plane of benzene rings to which they are attached [maximum deviations of 0.014 (3) and 0.007 (3) Å]. The benzene rings are oriented at angles of 67.2 (1) and 87.0 (1)° with respect to the best plane through the four co-planar atoms of the piperidine ring

Methyl 4-(3-eth­oxy-4-hydroxy­phen­yl)-6-methyl-2-oxo-1,2,3,4-tetra­hydro­pyrimidine-5-carboxyl­ate monohydrate

In the title compound, C15H18N2O5·H2O, the pyrimidine ring adopts a flattened-boat conformation. The eth­oxy group attached to the benzene ring is in an extended conformation. The oxopyrimidine mol­ecules are linked into centrosymmetric R 2 2(20) dimers by O—H⋯O hydrogen bonds. The dimers are linked by N—H⋯O hydrogen bonds, forming a two-dimensional network parallel to the bc plane. Adjacent networks are cross-linked via N—H⋯O and O—H⋯O hydrogen bonds involving the water mol­ecules

1-Dichloro­acetyl-r-2,c-6-bis­(4-methoxy­phen­yl)-c-3,t-3-dimethyl­piperidin-4-one

In the title compound, C23H25Cl2NO4, the piperidine ring adopts a distorted boat conformation. Inversion-related mol­ecules are linked into centrosymmetric R 2 2(16) dimers by paired C—H⋯O hydrogen bonds, and the dimers are connected via C—H⋯O hydrogen bonds into a chain running along [101]

6-Bromo-2-(3-phenyl­allyl­idene)-2,3,4,9-tetra­hydro-1H-carbazol-1-one

Mol­ecules of the title compound, C21H16BrNO, are linked through pairs of N—H⋯O inter­molecular hydrogen bonds into centrosymmetric R 2 2(10) dimers. One of the C atoms of the cyclohex-2-enone ring is disordered with refined occupancies of 0.61 (2) and 0.39 (2)

1,1′-[4-(4-Methoxy­phen­yl)-2,6-dimethyl-1,4-dihydro­pyridine-3,5-di­yl]diethanone

In the title compound, C18H21NO3, which belongs to the family of calcium channel blockers, the dihydropyridine ring assumes a flattened boat conformation. The two carbonyl units adopt a synperiplanar conformation with respect to the double bonds in the dihydro­pyridine ring. The methoxy­phenyl ring is almost perpendicular to the prydine ring [dihedral angle = 89.01 (7)°]. In the crystal, the mol­ecules are connected by inter­molecular N—H⋯O hydrogen bonds

tert-Butyl 3-[2,2-bis­(ethoxy­carbon­yl)vin­yl]-2-bromo­methyl-1H-indole-1-carboxyl­ate

In the title compound, C22H26BrNO6, the indole ring system is planar [maximum deviation 0.029 (2) Å]. The tert-butyl bound carboxyl­ate group forms a dihedral angle of 17.54 (8)° with the indole ring system. In the crystal, mol­ecules are linked into centrosymmetric R 2 2(10) dimers by paired C—H⋯O hydrogen bonds

2-(6-Chloro-2,3,4,9-tetra­hydro-1H-carbazol-1-yl­idene)propane­dinitrile

The mol­ecular conformation of the title compound, C15H10ClN3, is stabilized by an intra­molecular N—H⋯N hydrogen bond with an S(7) ring motif. The crystal packing is controlled by N—H⋯N and C—H⋯N inter­molecular inter­actions. One of the methyl­ene groups of the cyclo­hexene ring is disordered over two positions with refined occupancies of 0.457 (12) and 0.543 (12)

1-(2,4-Dinitro­phen­yl)-5-ferrocenyl-3-methyl-1H-pyrazole

In the title compound, [Fe(C5H5)(C15H11N4O4)], the dinitro­phenyl and cyclo­penta­dienyl rings make dihedral angles of 53.61 (6) and 23.11 (9)°, respectively, with the pyrazole unit. The two cyclo­penta­dienyl rings are in an eclipsed conformation. The crystal structure is stabilized by inter­molecular C—H⋯O inter­actions, which link mol­ecules into chains parallel to the b axis

r-2,c-6-Bis(4-methoxy­phen­yl)-c-3,t-3-dimethyl­piperidin-4-one

The asymmetric unit of the title compound, C21H25NO3, contains two crystallographically independent mol­ecules (A and B). In both mol­ecules, the piperidine ring adopts a chair conformation, with the methoxy­phenyl rings attached equatorially. The dihedral angle between the two benzene rings in mol­ecule A is 73.79 (8)°; the corresponding value in mol­ecule B is 77.71 (8)°. The mol­ecules are linked by N—H⋯O hydrogen bonds. In addition, C—H⋯π inter­actions are also found in the crystal structure