Dichloridobis(1-ethyl-2,6-dimethyl­pyridinium-4-olate-κO)zinc(II)

In the title compound, [ZnCl2(C9H13NO)2], the ZnII ion is coordinated by two Cl− anions and two O atoms of two zwitterionic organic ligands in a distorted tetra­hedral arrangement. In the crystal, mol­ecules are linked into sheets parallel to the bc plane by C—H⋯Cl and C—H⋯O hydrogen bonds and weak π–π inter­actions [centroid–centroid distance = 3.669 (1) Å]

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

In the title mol­ecule, C19H19Cl2NO, the piperidine ring adopts a chair conformation and the dihedral angle between the two benzene rings is 77.23 (7)°. In the crystal structure, mol­ecules are linked by N—H⋯O and C—H⋯O hydrogen bonds, and a weak C—H⋯π inter­action is also observed

2-(1,2,3,4-Tetra­hydro-9H-carbazol-1-yl­idene)propane­dinitrile

In the title compound, C15H11N3, the cyclo­hexene ring adopts a sofa conformation. An intra­molecular N—H⋯N hydrogen bond generates an S(7) ring motif. In the crystal, mol­ecules are linked by inter­molecular N—H⋯N, C—H⋯N and C—H⋯π inter­actions into a three-dimensional network

1-[(E)-2-Formyl-1-(4-methyl­phen­yl)ethen­yl]-3-(4-methyl­phen­yl)pyrazole-4-carbaldehyde

In the crystal structure of the title compound, C21H18N2O2, mol­ecules are linked through C—H⋯O inter­actions. Two symmetry-related mol­ecules form a cyclic centrosymmetric R 2 2(20) dimer. These dimers are further connected into chains running along the b axis

1-Formyl-r-2,c-6-bis­(4-methoxy­phen­yl)-t-3-methyl­piperidin-4-one

The asymmetric unit of the title compound, C21H23NO4, contains two crystallographically independent mol­ecules A and B. In both mol­ecules, the piperidine-4-one rings adopt a distorted twist-boat conformation. The formyl group at position 1, the methoxy­phenyl ring at position 2 and the methyl group at position 3 are attached equatorially. The meth­oxy phenyl ring at position 6 has an axial orientation. The dihedral angle between the two benzene rings is 55.27 (8)° in mol­ecule A, and 55.29 (8)° in mol­ecule B. In the crystal, the mol­ecules are linked by weak C—H⋯O inter­molecular hydrogen-bond inter­actions. In addition, weak C—H⋯π inter­molecular inter­actions involving the benzene rings at positions 6 and 2 of mol­ecule B are also found in the crystal structure

Ethyl 2-[N-(2-formyl­phen­yl)benzene­sulfonamido]acetate

In the mol­ecule of the title compound, C17H17NO5S, the two aromatic rings are oriented at an angle of 30.13 (10)°. The ethyl acetate group assumes an extended conformation. Mol­ecules are linked into C(7) chains running along the a axis by inter­molecular C—H⋯O hydrogen bonds, and the chains are crosslinked via C—H⋯π inter­actions, with the sulfonyl-bound phenyl ring acting as an acceptor

3,3-Dimethyl-cis-2,6-di-p-tolyl­piperidin-4-one

In the title mol­ecule, C21H25NO, the piperidine ring adopts a chair conformation. The benzene rings and one of the methyl groups attached to the piperidine ring have equatorial orientations. The dihedral angle between the two benzene rings is 72.53 (9)°. In the crystal, mol­ecules are linked by N—H⋯O hydrogen bonds. Weak C—H⋯π inter­actions involving the benzene rings are also present in the crystal structure

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)

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)