scholarly journals N,N′-Bis[2,6-bis(1-methylethyl)phenyl]pyridine-4-carboximidamide toluene hemisolvate

2021 ◽  
Vol 77 (2) ◽  
pp. 117-120
Author(s):  
Lola Cottin ◽  
Sarah Girard ◽  
Garry S. Hanan ◽  
Mihaela Cibian
Keyword(s):  
Carbon Atom ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Intramolecular Hydrogen Bonds ◽  
Compound C ◽  
Intramolecular Hydrogen

The title compound, C30H39N3·0.5C7H8, is a symmetrically N,N′-disubstituted arylamidine containing a 4-pyridyl substituent on the carbon atom of the N–C–N linkage and bulky 2,6-diisopropylphenyl groups on the nitrogen atoms. It crystallizes in the Z-anti configuration and its amidine C—N bonds present amine [1.368 (1) Å] and imine [1.286 (1) Å] features. Intramolecular hydrogen bonds are present in the structure together with intermolecular N—H...N and C—H...N interactions linking the molecules in chains along the a- and c-axis directions.

N-(4-Methylbenzoyl)-N′-(4-methylphenyl)thiourea

2007 ◽  
Vol 63 (11) ◽  
pp. o4395-o4395
Author(s):  
S. Aminah A. Razis ◽  
M. Sukeri M. Yusof ◽  
A. Maisara Kadir ◽  
Bohari M. Yamin
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Intermolecular Hydrogen Bonds ◽  
Intramolecular Hydrogen Bonds ◽  
Compound C ◽  
Intramolecular Hydrogen

The title compound, C16H16N2OS, adopts a trans–cis configuration of the 4-methylbenzoyl and 4-methylphenyl groups, with respect to the thiono S atom across the thiourea C—N bonds. The dihedral angle between the two groups is 10.36 (8)°. The structure is stabilized by intermolecular hydrogen bonds which form dimers. There are also intramolecular hydrogen bonds.

2-(Dibenzoylamino)pyridine

2006 ◽  
Vol 62 (5) ◽  
pp. o1868-o1869 ◽  
Author(s):  
Yan-Bo Weng ◽  
Jing-Kang Wang ◽  
Yan-Fei Wang
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Intramolecular Hydrogen Bonds ◽  
Compound C ◽  
Highly Effective ◽  
Intramolecular Hydrogen

The title compound, C19H14N2O2, is a highly effective nematicide. No inter- or intramolecular hydrogen bonds are observed in the crystal structure.

scholarly journals (E)-2-Amino-4-(3,3-dimethyl-2-oxobutylidene)-1-[2-(2-hydroxyethoxy)ethyl]-6-methyl-1,4-dihydropyridine-3-carbonitrile

2012 ◽  
Vol 68 (8) ◽  
pp. o2572-o2572
Author(s):  
Hyung Jin Kim ◽  
Young Hyun Kim ◽  
Enkhzul Otgonbaatar ◽  
Chee-Hun Kwak
Keyword(s):  
Hydrogen Bonds ◽  
Hydroxy Group ◽  
Title Compound ◽  
Zigzag Chain ◽  
Intramolecular Hydrogen Bonds ◽  
Π Interactions ◽  
Compound C ◽  
Intramolecular Hydrogen ◽  
Dihydropyridine Ring

In the title compound, C17H25N3O3, there are intramolecular hydrogen bonds between an amine H atom and the epoxy O atom, and between a dihydropyridine ring H atom and the ketone O atom. In the crystal, molecules are linked into a zigzag chain running parallel to thecaxis by hydrogen bonds between the hydroxy group and the ketone O atom. There are also weak C—H...O and C—H...π interactions which link the molecules into sheets lying in thebcplane.

scholarly journals Ethyl (E)-2-(2,7-dimethyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-4-ylidene)acetate

IUCrData ◽  
2017 ◽  
Vol 2 (2) ◽  
Author(s):  
Oulemda Bassou ◽  
Hakima Chicha ◽  
Latifa Bouissane ◽  
El Mostapha Rakib ◽  
Mohamed Saadi ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Intramolecular Hydrogen Bonds ◽  
Axis Direction ◽  
Π Interactions ◽  
Compound C ◽  
Acceptor Atom ◽  
The Mean ◽  
Intramolecular Hydrogen

In the title compound, C14H14O5, the two heterocyclic rings are coplanar (r.m.s. deviation = 0.008 Å), with the largest deviation from the mean plane being 0.012 (1) Å. The mean plane through the acetate group is inclined slightly with respect to the oxopyrano[4,3-b]pyran-4-yl system, as indicated by the dihedral angle of 1.70 (7)° between them. Two intramolecular hydrogen bonds, completingS(6) ring motifs, are observed in the molecule. In the crystal, molecules are linked by weak C—H...O hydrogen bonds involving the same acceptor atom, forming chains propagating along thec-axis direction and enclosingR21(6) ring motifs. The chains are linkedviaoffset π–π interactions [intercentroid distance = 3.622 (1) Å], involving inversion-related oxopyrano[4,3-b]pyran-4-yl ring systems, forming slabs parallel to thebcplane.

(1E,4E)-1,5-Bis(2-chlorophenyl)penta-1,4-dien-3-one

2007 ◽  
Vol 63 (11) ◽  
pp. o4379-o4379 ◽  
Author(s):  
M. Nizam Mohideen ◽  
S. Thenmozhi ◽  
A. Subbiah Pandi ◽  
Ramalingam Murugan ◽  
S. Sriman Narayanan
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Intramolecular Hydrogen Bonds ◽  
Space Group ◽  
Compound C ◽  
Centrosymmetric Space Group ◽  
Benzene Rings ◽  
Intramolecular Hydrogen

The title compound, C17H12Cl2O, crystallizes in a centrosymmetric space group. The dihedral angle between the two benzene rings is 24.7 (1)°. The crystal packing is characterized by non-classical C—H...O and C—H...Cl inter- and intramolecular hydrogen bonds.

N-(2-Chlorophenyl)-2-(quinolin-8-yloxy)acetamide

2006 ◽  
Vol 62 (7) ◽  
pp. o3071-o3072 ◽  
Author(s):  
Shu-Sheng Zhang ◽  
Li-Li Xu ◽  
Hui-Ling Wen ◽  
Xue-Mei Li ◽  
Yong-Hong Wen
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Intramolecular Hydrogen Bonds ◽  
Π Interactions ◽  
Compound C ◽  
Intramolecular Hydrogen

In the title compound, C17H14ClN2O3, there are intramolecular hydrogen bonds of types N—H...O (2.634 and 2.570 Å), N—H...Cl (2.925 Å) and C—H...O (2.894 Å). The dihedral angle between the planes of the quinoline system and the benzene ring is 20.3 (1)°. The crystal packing is stabilized by π–π interactions.

scholarly journals (5Z,7Z)-N 5,N 7-Bis(pyridin-2-yl)-5H-6,7-dihydropyrrolo[3,4-b]pyrazine-5,7-diimine

IUCrData ◽  
2018 ◽  
Vol 3 (5) ◽  
Author(s):  
Maciej Posel ◽  
Helen Stoeckli-Evans
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Intramolecular Hydrogen Bonds ◽  
Axis Direction ◽  
Compound C ◽  
Π Stacking ◽  
Intramolecular Hydrogen

The whole molecule of the title compound, C16H11N7, is relatively planar, with an r.m.s. deviation of 0.061 Å for all 23 heteroatoms. It exhibits symmetric three-centre (bifurcated) intramolecular hydrogen bonds. In the crystal, molecules are linked by C—H...N hydrogen bonds, forming 31 helices propagating along the c-axis direction. Within the helices, there is evidence of offset π–π stacking being present [intercentroid distances = 3.648 (6) and 3.832 (6) Å].

scholarly journals Methyl 2-(3-chloro-2-methylanilino)pyridine-3-carboxylate

IUCrData ◽  
2021 ◽  
Vol 6 (5) ◽  
Author(s):  
Xing Yang ◽  
Sihui Long
Keyword(s):  
Hydrogen Bonds ◽  
Single Crystals ◽  
Benzene Ring ◽  
Title Compound ◽  
The Other ◽  
Intramolecular Hydrogen Bonds ◽  
Extended Structure ◽  
Compound C ◽  
Π Stacking ◽  
Intramolecular Hydrogen

The title compound, C14H13ClN2O2, was obtained during an attempt to grow single crystals of 4-acetylphenyl 2-[(3-chloro-2-methylphenyl)amino]nicotinate in methanol, and was probably generated by alcoholysis. Two intramolecular hydrogen bonds are formed, one between the N—H group and the carbonyl O atom of the ester and the other between the ortho sp 2CH group of the benzene ring and the pyridine N atom. Aromatic π–π stacking [shortest centroid–centroid separation = 3.598 (2) Å] is observed in the extended structure.

scholarly journals Crystal structure of 3,6-dihydroxy-4,5-dimethylbenzene-1,2-dicarbaldehyde

2018 ◽  
Vol 74 (10) ◽  
pp. 1424-1426 ◽  
Author(s):  
Shu Yamazaki ◽  
Kazuki Nishiyama ◽  
Shiomi Yagi ◽  
Tomoyuki Haraguchi ◽  
Takashiro Akitsu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal Packing ◽  
Intramolecular Hydrogen Bonds ◽  
Compound C ◽  
Planar Molecule ◽  
Intramolecular Hydrogen ◽  
Hydroxy Groups

The title compound, C10H10O4, was synthesized from tetramethyl-1,4-benzoquinone. In the crystal, the almost planar molecule (r.m.s. deviation = 0.024 Å) forms intramolecular hydrogen bonds between the aldehyde and hydroxy groups and exhibits C 2v symmetry. This achiral molecule crystallizes in the chiral space group P21 with intermolecular O—H...O and C—H...O hydrogen bonding and C—H...π and C=O...π interactions stabilizing the crystal packing.

True symmetry or pseudosymmetry: 5-amino-1-(4-methylphenylsulfonyl)-4-pyrazolin-3-one and a comparison with its 1-phenylsulfonyl analogue

2012 ◽  
Vol 69 (1) ◽  
pp. 90-92 ◽  
Author(s):  
Galal H. Elgemeie ◽  
Shahinaz H. Sayed ◽  
Peter G. Jones
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Intramolecular Hydrogen Bond ◽  
Title Compound ◽  
Acta Cryst ◽  
Interplanar Angle ◽  
Phenyl Derivative ◽  
Compound C ◽  
Independent Molecules ◽  
Intramolecular Hydrogen

The title compound, C10H11N3O3S, (I), crystallizes as the NH tautomer. The two rings subtend an interplanar angle of 72.54 (4)°. An intramolecular hydrogen bond is formed from the NH2group to a sulfonyl O atom. The molecular packing involves layers of molecules parallel to thebcplane atx≃ 0, 1etc., with two classical linear hydrogen bonds (amino–sulfonyl and pyrazoline–carbonyl N—H...O) and a further interaction (amino–sulfonyl N—H...O) completing a three-centre system with the intramolecular contact. The analogous phenyl derivative, (II) [Elgemeie, Hanfy, Hopf & Jones (1998).Acta Cryst.C54, 136–138], crystallizes with essentially the same unit cell and packing pattern, but with two independent molecules that differ significantly in the orientation of the phenyl groups. The space group isP21/cfor (I) butP21for (II), which is thus a pseudosymmetric counterpart of (I).

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