300 research outputs found
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)
- …