scholarly journals 2-((E)-{4-[Bis(4-ethoxyphenyl)amino]phenyl}iminomethyl)phenol

2014 ◽  
Vol 70 (3) ◽  
pp. o313-o313
Author(s):  
Bing-Fei Gao ◽  
Zhe-Peng Jin ◽  
Jiang Chen ◽  
Yu-Peng Tian
Keyword(s):  
Hydrogen Bond ◽  
Schiff Base ◽  
Benzene Ring ◽  
Three Dimensional ◽  
Supramolecular Architecture ◽  
Π Interactions ◽  
Benzene Rings

In the title Schiff base molecule, C29H28N2O3, the three terminal benzene rings are twisted by 73.84 (15), 81.25 (16) and 12.1 (2)° with respect to the central benzene ring. An intramolecular O—H...N hydrogen bond occurs. In the crystal, molecules are linkedviaweak C—H...π interactions into a three-dimensional supramolecular architecture.

scholarly journals Crystal structure of 4-[(3-methoxy-2-oxidobenzylidene)azaniumyl]benzoic acid methanol monosolvate

2018 ◽  
Vol 74 (12) ◽  
pp. 1847-1850 ◽  
Author(s):  
Saima Kamaal ◽  
Md. Serajul Haque Faizi ◽  
Akram Ali ◽  
Musheer Ahmad ◽  
Turganbay Iskenderov
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Hydrogen Bond ◽  
Schiff Base ◽  
Three Dimensional ◽  
Supramolecular Architecture ◽  
Zwitterionic Form ◽  
Compound C ◽  
Benzene Rings ◽  
Solvent Molecules

In the crystal of the title compound, C15H13NO4·CH3OH, the Schiff base molecule exists in the zwitterionic form; an intramolecular N—H...O hydrogen bond stabilizes the molecular structure. The benzene rings are nearly co-planar, subtending a dihedral angle of 5.34 (2)°. In the crystal, classical O—H...O and weak C—H...O hydrogen bonds link the Schiff base molecules and methanol solvent molecules into a three-dimensional supramolecular architecture. The crystal studied was refined as an inversion twin.

scholarly journals Crystal structure of 1-benzyl-3-methyl-1H-imidazolium hexafluoridophosphate

2014 ◽  
Vol 70 (12) ◽  
pp. o1248-o1249 ◽  
Author(s):  
Patrick C. Hillesheim ◽  
Kent A. Scipione
Keyword(s):  
Crystal Structure ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Three Dimensional ◽  
Π Interactions ◽  
Dimensional Network ◽  
Benzene Rings ◽  
Imidazolium Ring ◽  
Adjacent Molecule

In the title salt, C11H13N2+·PF6−, the dihedral angle between the planes of the imidazole and benzene rings is 84.72 (4)°. In the crystal, C—H...F interactions connect the cation and anion pairs into a three-dimensional network. Weak π–π interactions are observed between the imidazolium ring and the aromatic benzene ring of an adjacent molecule with C...C and C...N distances ranging from 3.3714 (16) to 3.4389 (15) Å.

scholarly journals (±)-trans-6,6′-Diethoxy-2,2′-[cyclohexane-1,2-diylbis(nitrilomethanylylidene)]diphenol monohydrate

2014 ◽  
Vol 70 (2) ◽  
pp. o182-o183 ◽  
Author(s):  
Nithya Mohan ◽  
S. S. Sreejith ◽  
M. Sithambaresan ◽  
M. R. Prathapachandra Kurup
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Organic Molecule ◽  
Three Dimensional ◽  
Chair Conformation ◽  
Cyclohexane Ring ◽  
Supramolecular Architecture ◽  
Double Bonds ◽  
Π Interactions ◽  
Benzene Rings

In the title hydrate, C24H30N2O4·H2O, the organic molecule adopts anEconformation with respect to the azomethine double bonds. The cyclohexane ring is in a chair conformation. The dihedral angle between benzene rings is 79.6 (2)°. Two intramolecular O—H...N hydrogen bonds are present. In the crystal, the components are linked by O–H...O hydrogen bonds and weak C—H...π interactions, generating a three-dimensional supramolecular architecture.

scholarly journals 2-[(E)-2-(4-Hydroxy-3-methoxyphenyl)ethenyl]-1-methylpyridinium 4-bromobenzenesulfonate monohydrate

2013 ◽  
Vol 69 (12) ◽  
pp. o1851-o1852
Author(s):  
Suchada Chantrapromma ◽  
Nawong Boonnak ◽  
Boonwasana Jindawong ◽  
Hoong-Kun Fun
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Torsion Angle ◽  
Three Dimensional ◽  
Water Molecules ◽  
Π Interactions ◽  
Dimensional Network ◽  
Benzene Rings

The title salt crystallized as the monohydrate C15H16NO2+·C6H4BrSO3−·H2O. The cation exists in anEconformation with respect to the ethynyl bond and is essentially planar, with a dihedral angle of 6.52 (14)° between the pyridinium and the benzene rings. The hydroxy and methoxy substituents are coplanar with the benzene ring to which they are attached, with an r.m.s. deviation of 0.0116 (3) Å for the nine non-H atoms [Cmethyl—O—C—C torsion angle = −0.8 (4)°]. In the crystal, the cations and anions are stacked by π–π interactions, with centroid–centroid distances of 3.7818 (19) and 3.9004 (17) Å. The cations, anions and water molecules are linked by O—H...O hydrogen bonds and weak C—H...O interactions, forming a three-dimensional network.

scholarly journals Crystal structure of 4,4′-dinitro-[1,1′-biphenyl]-2-amine

2017 ◽  
Vol 73 (4) ◽  
pp. 550-552
Author(s):  
Md. Serajul Haque Faizi ◽  
Ashanul Haque ◽  
Necmi Dege ◽  
Syed Imran Hasan ◽  
Mustafa Dege ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Nitro Group ◽  
Benzene Ring ◽  
Three Dimensional ◽  
Bond Forming ◽  
Biphenyl Derivative ◽  
Benzene Rings ◽  
Ring Motif

In the title biphenyl derivative, C12H9N3O4, the dihedral angle between the benzene rings is 52.84 (10)°. The nitro group attached to the benzene ring is inclined to the ring by 4.03 (2)°, while the nitro group attached to the amino-substituted benzene ring is inclined to the ring by 8.84 (2)°. In the crystal, molecules are linked by two pairs of N—H...O hydrogen bonds, forming chains propagating along [101]. Within the chains, these N—H...O hydrogen bonds result in the formation ofR22(20) andR22(14) ring motifs. The latter ring motif is reinforced by a pair of C—H...O hydrogen bonds, enclosingR21(6) ring motifs. The chains are linked by a second C—H...O hydrogen bond, forming a three-dimensional supramolecular structure.

scholarly journals 1,3-Bis{(E)-[4-(dimethylamino)benzylidene]amino}propan-2-ol: chain structure formation via an O—H...N hydrogen bond

2017 ◽  
Vol 73 (6) ◽  
pp. 813-816
Author(s):  
Augusto Rivera ◽  
Ingrid Miranda-Carvajal ◽  
Jaime Ríos-Motta ◽  
Michael Bolte
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Lone Electron Pair ◽  
Three Dimensional ◽  
Chain Structure ◽  
Compound C ◽  
Dimensional Network ◽  
Benzene Rings ◽  
The One

The asymmetric unit of the title compound, C21H28N4O, consists of two unique molecules linked by an O—H...N hydrogen bond. The conformation of both C=N bonds is E and the azomethine functional groups lie close to the plane of their associated benzene rings in each of the independent molecules. The dihedral angles between the two benzene rings are 83.14 (4) and 75.45 (4)°. The plane of the one of the N(CH3)2 units is twisted away from the benzene ring by 18.8 (2)°, indicating loss of conjugation between the lone electron pair and the benzene ring. In the crystal structure, O—H...N hydrogen bonds together with C—H...O hydrogen bonds link neighbouring supramolecular dimers into a three-dimensional network.

scholarly journals Crystal structure of benzimidazolium salicylate

2015 ◽  
Vol 71 (10) ◽  
pp. o794-o795 ◽  
Author(s):  
M. Amudha ◽  
P. Praveen Kumar ◽  
G. Chakkaravarthi
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Π Interactions ◽  
Molecular Salt ◽  
Ring Motif

In the anion of the title molecular salt, C7H7N2+·C7H5O3−(systematic name: 1H-benzimidazol-3-ium 2-hydroxybenzoate), there is an intramolecular O—H...O hydrogen bond that generates anS(6) ring motif. The CO2group makes a dihedral angle of 5.33 (15)° with its attached ring. In the crystal, the dihedral angle between the benzimidazolium ring and the anion benzene ring is 75.88 (5)°. Two cations bridge two anionsviatwo pairs of N—H...O hydrogen bonds, enclosing anR44(16) ring motif, forming a four-membered centrosymmetric arrangement. These units are linkedviaC—H...O hydrogen bonds, forming chains propagating along theb-axis direction. The chains are linked by C—H...π and π–π interactions [inter-centroid distances = 3.4156 (7) and 3.8196 (8) Å], forming a three-dimensional structure.

scholarly journals 6-Amino-1,3-dimethyl-5-[(E)-2-(methylsulfanyl)benzylideneamino]pyrimidine-2,4(1H,3H)-dione–1,3,7,9-tetramethylpyrimido[5,4-g]pteridine-2,4,6,8-tetrone (1/1)

2012 ◽  
Vol 68 (8) ◽  
pp. o2334-o2335
Author(s):  
Irvin N. Booysen ◽  
Muhammed B. Ismail ◽  
Matthew P. Akerman
Keyword(s):  
Hydrogen Bond ◽  
Schiff Base ◽  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Π Interactions ◽  
Dimensional Network

In the title co-crystal, C12H12N6O4·C14H16N4O2S, both molecules are essentially planar [maximum deviations = 0.129 (1) and 0.097 (1) Å, respectively]. The tricyclic and Schiff base molecules are alternately stacked along theaaxis and are linked by π–π interactions with centroid–centroid distances of 3.5170 (16) and 3.6576 (17) Å. An intramolecular C—H...O hydrogen bond and a C—H...S contact occur in the Schiff base molecule. In the crystal, N—H...O, N—H...N and C—H...O hydrogen bonds lead to the formation of a three-dimensional network.

scholarly journals 3-Methylpyridinium 4-nitrobenzoate–4-nitrobenzoic acid (1/1)

IUCrData ◽  
2016 ◽  
Vol 1 (6) ◽  
Author(s):  
P. Sivakumar ◽  
R. Niranjana Devi ◽  
S. Israel ◽  
G. Chakkaravarthi
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Pyridine Ring ◽  
Three Dimensional ◽  
Supramolecular Architecture ◽  
Nitrobenzoic Acid ◽  
Compound C ◽  
Benzene Rings

In the title compound, C6H8N+·C7H4NO4−·C7H5NO4, the cation is protonated at its pyridine N atom and makes a dihedral angle of 74.14 (12)° with the benzene ring of the anion. The benzene ring of the neutral molecule and the pyridine ring are inclined at an angle of 79.20 (12)°. The two benzene rings form a dihedral angle of 6.00 (12)° with each other. In the crystal, N—H...O, O—H...O and C—H...O hydrogen bonds link the cations, anions and neutral molecules to form layers parallel to theacplane, which enloseR44(18) ring motifs. The layers are linked by further C—H...O hydrogen bonds and C—H...π interactions, forming a three-dimensional supramolecular architecture.

scholarly journals Crystal structure of (1,3-thiazole-2-carboxylato-κN)(1,3-thiazole-2-carboxylic acid-κN)silver(I)

2019 ◽  
Vol 75 (2) ◽  
pp. 185-188
Author(s):  
Natthaya Meundaeng ◽  
Apinpus Rujiwatra ◽  
Timothy J. Prior
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Carboxylic Acid ◽  
Hydrogen Atom ◽  
Three Dimensional ◽  
Supramolecular Architecture ◽  
Π Interactions ◽  
Hydrogen Bonding Interactions ◽  
Linear Configuration

The linear two-coordinate silver (I) complex [Ag(C4H2NO2S)(C4H3NO2S)] or [Ag(2-Htza)(2-tza)] is reported (2-Htza = 1,3-thiazole-2-carboxylic acid). The AgI ion is coordinated by two heterocyclic N atoms from two ligands in a linear configuration, forming a discrete coordination complex. There is an O—H...O hydrogen bond between 2-tza− and 2tzaH of adjacent complexes. The hydrogen atom is shared between the two oxygen atoms. This interaction produces a hydrogen-bonded tape parallel to the [110] direction, which is augmented through intermolecular C—H...O hydrogen-bonding interactions between the bound thiazole groups. There is a further rather long Ag...O interaction [2.8401 (13) Å, compared with a mean of 2.54 (11) Å for 23 structures in the CSD] that assembles these tapes into columns, between which there are C—H...π interactions, leading to the formation of a three-dimensional supramolecular architecture.

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