59 research outputs found
5-Diethylamino-2-{(E)-[(3-iodophenyl)imino]methyl}phenol
The title Schiff base, C17H19IN2O, is not planar, displaying a dihedral angle of 34.9 (2)° between the two aromatic rings. The molecular conformation allows the formation of a strong intramolecular O—H⋯N hydrogen bond with graph-set motif S(6) between the hydroxy group and the imine N atom
Diaquabis(ethylenediamine-κ2 N,N′)copper(II) 2,2′-dithiodinicotinate sesquihydrate
In the title compound, [Cu(C2H8N2)2](C12H6N2O4S2)·1.5H2O, there are two half-molecules of the cationic complex in the asymmetric unit. The Cu2+ ions lie on inversion centres and are octahedrally coordinated by two ethylenediamine (en) and two aqua ligands in a typical Jahn–Teller distorted environment with the water O atoms in the axial positions. Two 2-mercaptonicotinate units (mnic) are linked by a disulfide bridge. All the ethylenediamine N—H and O—H groups form intermolecular hydrogen bonds with acceptor O and N atoms, giving rise to a three-dimensional network. One of the uncoordinated water molecules has a site occupation factor of 0.5
2,4-Dibromo-2,3-dihydro-1H-inden-1-yl acetate
In the title compound, C11H10Br2O2, the cyclopentene ring fused to the benzene ring adopts an envelope conformation, with the C atom attached to the Br atom as the flap. The crystal structure does not exhibit any classical hydrogen bonds. The molecular packing is stabilized by van der Waals forces and π–π stacking interactions with a centroid–centroid distance of 3.811 (4) Å
trans-Bis[2-(piperazin-1-yl)ethanamine]bis(saccharinato)cobalt(II)
In the centrosymmetric title complex, [Co(C7H4NO3S)2(C6H15N3)2], the CoII ion is coordinated by two saccharinate (sac) anions and two neutral 2-piperazin-1-ylethanamine (ppzea) ligands, showing a distorted octahedral coordination. Sac is O-bonded via the carbonyl group, while ppzea acts as an N,N′-bidentate chelating ligand. The molecules are connected by N—H⋯N and N—H⋯O hydrogen bonds, forming a linear chain running parallel to the crystallographic a axis. The compound is isostructural with the reported Ni, Zn, and Cd analogues
3-Amino-4-[4-(dimethylamino)phenyl]-4,5-dihydro-1,2,5-thiadiazole 1,1-dioxide
The title compound, C10H14N4O2S, exists in the amine tautomeric form. The dihedral angle between the benzene and thiadiazolidine rings is 66.54 (19)°. In the crystal, molecules are linked by N—H⋯O and N—H⋯N hydrogen bonds into a layer parallel to the ac plane. The layers are further linked by C—H⋯O hydrogen bonds
1,3-Dimethyl-2,6-diphenylpiperidin-4-one
In the title moleclue, C19H21NO, the 4-piperidone ring adopts a chair conformation in which the two benzene rings and the methyl group attached to C atoms all have equatorial orientations. In the crystal structure, centrosymmetric dimers are formed through weak intermolecular C—H⋯O hydrogen bonds [the dihedral angle between the aromatic rings is 58.51 (5)°]
(2Z,N′E)-N′-[(2-Hydroxy-1-naphthyl)methylidene]furan-2-carbohydrazonic acid
In the title compound, C16H12N2O3, the dihedral angle between the mean planes of the naphthalene ring system and the furan ring is 21.3 (6)°. The molecular structure is stabilized by an intramolecular O—H⋯N hydrogen bond, which generates an S(6) graph-set motif
(E,E)-N′-{4-[(2-Benzoylhydrazin-1-ylidene)methyl]benzylidene}benzohydrazide
In the title compound, C22H18N4O2, the molecules lie across an inversion centre. The dihedral angle between the mean planes of the central and terminal benzene rings is 66.03 (2)°. The molecule displays trans and anti conformations about the C=N and N—N bonds, respectively. In the crystal, N—H⋯O hydrogen bonds, with the O atoms of C=O groups acting as acceptors, link the molecules into a chain along [101]
- …