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.

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 Crystal structure of racemic [(1R,2S,3R,4S,6S)-2,6-bis(furan-2-yl)-4-hydroxy-4-(thiophen-2-yl)cyclohexane-1,3-diyl]bis(thiophen-2-ylmethanone)

2016 ◽  
Vol 72 (7) ◽  
pp. 976-979 ◽  
Author(s):  
Ísmail Çelik ◽  
Cem Cüneyt Ersanlı ◽  
Mehmet Akkurt ◽  
Hayrettin Gezegen ◽  
Rahmi Köseoğlu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Hydroxy Group ◽  
Title Compound ◽  
Furan Ring ◽  
Chair Conformation ◽  
Cyclohexane Ring ◽  
Π Interactions ◽  
Compound C

In the title compound, C28H22O5S3, the central cyclohexane ring adopts a chair conformation. The atoms of the furan ring attached to the 6-position of the central cyclohexane ring are disordered over two sets of sites with occupancies of 0.832 (5) and 0.168 (5). The hydroxy group is disordered over two positions (at the 4- and 6-positions of the cyclohexane ring) in the ratio 0.832 (5):0.168 (5). In the crystal, molecules are linked by C—H...O hydrogen bonds and C—H...π interactions, forming layers parallel to (100).

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.

scholarly journals Crystal structure of 7-{[bis(pyridin-2-ylmethyl)amino]methyl}-5-chloroquinolin-8-ol

2015 ◽  
Vol 71 (12) ◽  
pp. 1545-1547
Author(s):  
Koji Kubono ◽  
Kimiko Kado ◽  
Yukiyasu Kashiwagi ◽  
Keita Tani ◽  
Kunihiko Yokoi
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Hydroxy Group ◽  
Title Compound ◽  
Dihedral Angles ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Ring Motif

In the title compound, C22H19ClN4O, the quinolinol moiety is almost planar [r.m.s. deviation = 0.012 Å]. There is an intramolecular O—H...N hydrogen bond involving the hydroxy group and a pyridine N atom forming anS(9) ring motif. The dihedral angles between the planes of the quinolinol moiety and the pyridine rings are 44.15 (9) and 36.85 (9)°. In the crystal, molecules are linkedviaC—H...O hydrogen bonds forming inversion dimers with anR44(10) ring motif. The dimers are linked by C—H...N hydrogen bonds, forming ribbons along [01-1]. The ribbons are linked by C—H...π and π–π interactions [inter-centroid distance = 3.7109 (11) Å], forming layers parallel to (01-1).

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 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.

scholarly journals Diethyl 2,6-dimethyl-4-(naphthalen-1-yl)-1,4-dihydropyridine-3,5-dicarboxylate

IUCrData ◽  
2016 ◽  
Vol 1 (5) ◽  
Author(s):  
N. L. Prasad ◽  
Noor Shahina Begum
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Pyridine Ring ◽  
Ring System ◽  
Zigzag Chain ◽  
Boat Conformation ◽  
Naphthalene Ring ◽  
Compound C ◽  
Dihydropyridine Ring ◽  
Ring Motif

In the title compound, C23H25NO4, the 1,4-dihydropyridine ring adopts a flattened boat conformation. The naphthalene ring system forms a dihedral angle of 88.59 (6)° with the pyridine ring. In the crystal, N—H...O and C—H...O hydrogen bonds generate anR12(6) ring motif and result in a zigzag chain along thebaxis. Additional C—H...O hydrogen bonds form infinite chains along thec-axis direction.

scholarly journals Crystal structure of a new monoclinic polymorph of 2,4-dihydroxybenzaldehyde 4-methylthiosemicarbazone

2015 ◽  
Vol 71 (1) ◽  
pp. 58-61 ◽  
Author(s):  
M. A. Salam ◽  
Mouayed A. Hussein ◽  
Edward R. T. Tiekink
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Hydroxy Group ◽  
Title Compound ◽  
Three Dimensional ◽  
Specific Interactions ◽  
Acta Cryst ◽  
Compound C ◽  
Intramolecular Hydrogen

The title compound, C9H11N3O2S, is a second monoclinic (P21/c) polymorph of the previously reportedCcform [Tanet al.(2008b).Acta Cryst.E64, o2224]. The molecule is non-planar, with the dihedral angle between the N3CS residue (r.m.s. deviation = 0.0816 Å) and the benzene ring being 21.36 (4)°. The conformation about the C=N bond [1.292 (2) Å] isE, the two N-bound H atoms areanti, and the inner hydroxy O-bound and outer amide N-bound H atoms form intramolecular hydrogen bonds to the imine N atom. Crucially, the H atom of the outer hydroxy group is approximatelysynto the H atom of the benzene C atom connecting the two C atoms bearing the hydroxy substituents. This arrangement enables the formation of supramolecular tubes aligned along [010] and sustained by N—H...O, O—H...S and N—H...S hydrogen bonds; the tubes pack with no specific interactions between them. While the molecular structure in theCcform is comparable, the H atom of the outer hydroxy group is approximatelyanti, rather thansyn. This different orientation leads to the formation a three-dimensional architecture based on N—H...O and O—H...S hydrogen bonds.

(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.

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