175 research outputs found
N-(2-Pyridylmethyl)phthalimide
In the title compound, C14H10N2O2, the phtalimide and 2-pyridylmethyl units are almost perpendicular, with an interplanar angle of 85.74 (2)°. In the crystal, molecules are linked by weak C—H⋯O interactions, forming chains running along the b axis. The packing is further stabilized by offset π–π interactions between adjacent pyridine rings, with a centroid–centroid distance of 3.855 (2) Å
2-p-Tolyl-1-p-tolylmethyl-1H-benzimidazole
The asymmetric unit of the title compound, C22H20N2, contains two crystallographically independent molecules in which the planar benzimidazole ring systems are oriented with respect to the adjacent tolyl rings at dihedral angles of 47.08 (8)/76.85 (8) and 39.52 (9)/87.49 (9)°, while the dihedral angles between the tolyl rings are 73.99 (3) and 81.51 (9)°. In the crystal structure, pairs of intermolecular C—H⋯N interactions link one of the asymmetric molecules into centrosymmetric dimers through R
2
2(8) ring motifs
(±)-1-(1H-Benzimidazol-2-yl)ethanol
The asymmetric unit of the title molecule, C9H10N2O, contains two molecules. The fused benzene and imidazole rings are nearly coplanar, the largest deviations from the mean plane being 0.025 (3) Å at the non-bridgehead imidazole C atom of one molecule and 0.018 (3) Å at one of the bridgehead C atoms in the other molecule. Intermolecular O—H⋯N and N—H⋯O hydrogen bonds result in the formation of a sheet parallel to the (010) plane
{2-Hydroxy-6-[(2-oxidophenyl)iminomethyl-κ2 N,O]phenolato-κO 1}phenylboron
The [4.3.0]heterobicyclic title structure, C19H14BNO3, is composed of a five-membered OBNC2 ring and a six-membered OBNC3 ring, each of which has an approximate envelope conformation. The coordination geometry of the B atom is distorted tetrahedral. In the crystal structure, centrosymmetrically related molecules are associated through pairs of O—H⋯O hydrogen bonds
2,4-Difluorophenylboronic acid
The molecular structure of the title compound, C6H5BF2O2, is essentially planar (mean deviation = 0.019 Å), indicating electronic delocalization between the dihydroxyboryl group and the aromatic ring. In the crystal structure, inversion dimers linked by two O—H⋯O hydrogen bonds arise. An intramolecular O—H⋯F hydrogen bond reinforces the conformation and the same H atom is also involved in an intermolecular O—H⋯F link, leading to molecular sheets in the crystal
3-Aminophenylboronic acid monohydrate
In the title compound, C6H8BNO2·H2O, the almost planar boronic acid molecules (r.m.s. deviation = 0.044 Å) form inversion dimers, linked by pairs of O—H⋯O hydrogen bonds. The water molecules link these dimers into [100] chains by way of O—H⋯O hydrogen bonds, and N—H⋯O links generate (100) sheets
4-Methoxy-N-[6-methyl-2,3-dihydro-1,3-benzothiazol-2-ylidene]benzenesulfonamide
The title compound, C15H14N2O3S2, is of interest with respect to its biological activity. The crystal structure is stabilized by intermolecular N—H⋯N, C—H⋯O and C—H⋯π hydrogen-bonding interactions, as well as offset π–π interactions [distance between the centroids of the aryl and thiazole rings of adjacent molecules of 3.954 (2) Å]
Poly[potassium-μ-2-[2-(carboxymethyl)phenyl]acetato]
In the title salt, [K(C10H9O4)]n, the K+ ions are coordinated by six O atoms from three different anions, and there is a cation–π interaction at ca 3.14 Å. The 2-[2-(carboxymethyl)phenyl]acetate anions are stabilized by intramolecular O—H⋯O hydrogen bonds, and the K+ cations are linked into one-dimensional coordination polymers running along the b axis; these are further interconnected by weak C—H⋯O hydrogen bonds
Poly[aquabis(μ-benzene-1,2-dicarboxylato)ethanoltetralithium]
In the crystal structure of the title compound [Li4(C8H4O4)2(C2H5OH)(H2O)]n, there are four crystallographically independent metal centers each of which is coordinated by four O atoms. The benzene-1,2-dicarboxylate groups act as bidentate–bridging ligands producing a two-dimensional coordination network parallel to the ab plane. The coordination polymer is further stabilized by coordination of water and ethanol molecules by the Li+ ions. Simultaneously, the water and ethanol molecules are involved in O—H⋯O and C—H⋯π interactions
(E)-2-{[2-(2-Hydroxyethylamino)ethylimino]methyl}phenol
The asymmetric unit of the title compound, C11H16N2O2, contains two independent conformational isomers which show intramolecular aromatic–imine O—H⋯N hydrogen bonds. In the crystal, neighboring molecules are linked through intermolecular aliphatic–aliphatic O—H⋯N, aliphatic–aromatic N—H⋯O and C—H⋯O interactions into hydrogen-bonded layers parallel to the ab plane
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