metal-organic compounds
In the title complex, the (4 + 2) coordination polyhedron around the CuII centre includes N atoms from three different 1,1,3,3-tetracyano-2-ethoxypropenide ligands, so forming a two-dimensional coordination polymer.
organic compounds
Five types of hydrogen bond link three independent molecules into a three-dimensional framework structure.
organic compounds
N-(3,4,5-Trimethoxybenzylidene)naphthalen-1-amine forms simple hydrogen-bonded sheets built from C-HO hydrogen bonds, linked by - stacking interactions, and its reduction product forms complex sheets built from N-HO, C-HO and C-H(arene) hydrogen bonds.
organic compounds
The reaction of a chloropyrazolecarbaldehyde with phenylhydrazine proceeds via a simple condensation rather than substitution or cyclocondensation. The resulting compound forms hydrogen-bonded chains, which are linked into sheets by - stacking interactions.
organic compounds
In three 5-acetyl-11-ethyl-6,11-dihydro-5H-dibenzo[b,e]azepine-6-carboxylic acids, which differ only in the presence of zero, one or two methyl substituents in one of the aryl rings, the hydrogen-bonded supramolecular aggregation is, respectively, two-, one- and three-dimensional.
organic compounds
A bipyridinediium propenide salt forms complex hydrogen-bonded sheets in which each cation acts as a sixfold donor of C-HN hydrogen bonds and each anion acts as a threefold acceptor.
metal-organic compounds
In a one-dimensional coordination polymer containing approximately square-pyramidal CuII, with one bridging and one terminal dicyanamide ligand, the polymer chains are linked by hydrogen bonds and - stacking interactions.
organic compounds
Four related compounds exemplify the reaction sequence from a 1,4-epoxybenzazepine ester via its reduction product, a benzazepin-4-ol ester, and the corresponding hydroxy carboxylic acid, to a lactone as formed by intramolecular condensation.
research papers
Multiple hydrogen bonds in tris(2,2′-bipyridine)iron(II) bis(1,1,3,3-tetracyano-2-ethoxypropenide) link water molecules, anions and chiral cations into two interpenetrating chiral frameworks.
research papers
The molecular components of a solvated 7H-pyrimido[4,5-b][1,4]diazepine derivative are linked by hydrogen bonds to form sheets containing four types of hydrogen-bonded ring.
research papers
Hydrogen bonds link molecules of the title compound into tripartite sheets, with the hydrogen bonds in the central layer and the hydrocarbyl substituents on the exterior.
research papers
Two independent - stacking interactions link the molecules of (E)-3-{4-[(7-chloroquinolin-4-yl)oxy]-3-methoxyphenyl}-1-(4-methylphenyl)prop-2-en-1-one, but hydrogen bonds are absent from the structure.
research papers
Coordination polymer chains built from CuII and adipate ions are linked into a framework structure by hydrogen bonds and - stacking interactions involving 2,2'-bipyridine and 1,1,3,3-tetracyano-2-ethoxypropenide components.
research papers
Hydrogen bonding in flunarizinium nicotinate and flunarizinediium bis(4-toluenesulfonate) dihydrate forms different three-dimensional framework structures.
research papers
The reaction of (2RS,3SR)-2,3-dibromo-1,3-bis(4-fluorophenyl)propan-1-one with phenylhydrazine gave a pyrazole exhibiting some aromatic-type delocalization in the pyrazole ring and with molecules that are linked into simple chains by a single C-H(arene) hydrogen bond. The same reaction with 4-hydroxybenzohydrazide instead of phenylhydrazine gave a solvated oxadiazine, with the oxadiazine molecules linked by a combination of N-HN and C-HO hydrogen bonds to form complex sheets and with the solvent molecules attached at the outer faces by O-HO hydrogen bonds.
research papers
In four halogenated N,2-diarylacetamides, two are isostructural in the space group P, with molecules linked into chains of rings by a combination of N-HO and C-H(arene) hydrogen bonds. Molecules of the other two acetamides are linked into simple C(4) chains by N-HO hydrogen bonds, but significant C-H(arene) interactions are absent.
research papers
In a substituted pyrazolo[1,5-a][1,3,5]triazine, centrosymmetric dimers generated by C-HO hydrogen bonds are linked into chains by a - stacking interaction.
research papers
Four imidazo[2,1-b][1,3,4]thiadiazoles display similar molecular constitutions and exhibit a wide variety of supramolecular structures. The molecular skeletons are all nearly planar. Two of the structures exhibit C-HN hydrogen bonding, forming ribbons in one and dimers in the other, while hydrogen bonding is absent in the remaining two structures.