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organic compounds
The title compound, C11H9Br3, consists of a norbornane skeleton, composed of two five-membered rings in envelope conformations and a six-membered ring with three Br atoms held in a boat conformation by a bridging methylene group, which constitutes a bicyclo[2.2.1]heptane system, having a benzene ring fused on one side. The repulsive interactions between the Br atoms affect the topology of the norbornane skeleton.
organic compounds
The title compound, C24H24N4O3, contains three aromatic rings and a triazole ring which are not coplanar. In the crystal structure the molecules are linked by C—H
N, C—HO, N—HN, C—Hπ and π–π interactions.
N, C—HO, N—HN, C—Hπ and π–π interactions. organic compounds
A new type of thiophene derivative with potential pharmacological activity, viz. 2-amino-4-(2-naphthalyl)thiophene-3-carbonitrile, C15H10N2S, has been prepared and studied by NMR and single-crystal X-ray diffraction techniques. The molecule contains two different groups, naphthalene and thiophene, which are nearly perpendicular to one another. In the crystal structure, a hydrogen bond, with a DA distance of 3.033 (3) Å, is present between the amino substituent and the carbonitrile N atom of a symmetry-related molecule. The crystal structure also includes one C—Hπ interaction.
A distance of 3.033 (3) Å, is present between the amino substituent and the carbonitrile N atom of a symmetry-related molecule. The crystal structure also includes one C—Hπ interaction. organic compounds
The title compound, C9H8N6OS, crystallizes with two molecules in the asymmetric unit. In the crystal structure, intermolecular N—HN hydrogen bonds form a three-dimensional network.
N hydrogen bonds form a three-dimensional network. organic compounds
In the title compound, C19H18N6O2S, none of the five- and six-membered rings are coplanar with the triazolone ring. Intramolecular C—HN and intermolecular C—HN and C—HO hydrogen bonds, together with some C—Hπ interactions, help to stabilize the structure.
N and intermolecular C—HN and C—HO hydrogen bonds, together with some C—Hπ interactions, help to stabilize the structure. organic compounds
The title compound, C16H15BrO, contains two non-planar six-membered rings constituting a bicyclic system. One of these rings shares two C atoms with an ethanoanthracene moiety, while the second ring has bromo and hydroxy substituents. The bicyclic system has approximate D3 symmetry. There are two molecules in the asymmetric unit. Two strong hydrogen bonds, with DA distances of 2.765 (2) and 2.818 (2) Å, are observed between O atoms.
A distances of 2.765 (2) and 2.818 (2) Å, are observed between O atoms.organic compounds
The title compound, C10H8N4S4, displays an approximate symmetry that closely fits the C2h point group, but it crystallizes in a general position without crystallographic symmetry. The crystal structure is stabilized by two intermolecular C—HN close contacts.
N close contacts.organic compounds
In the title compound, C23H21ClO4, the bicyclic system has approximate D3 symmetry and the four non-planar six-membered rings adopt boat conformations. Intra- and intermolecular hydrogen bonds are effective in stabilizing the crystal structure.
