scholarly journals 5,6-Dimethyl-2-(pyridin-2-yl)-1-[(pyridin-2-yl)methyl]-1H-benzimidazole

2014 ◽  
Vol 70 (3) ◽  
pp. o365-o365 ◽  
Author(s):  
David K. Geiger ◽  
Matthew R. DeStefano
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Intramolecular Hydrogen Bond ◽  
Title Compound ◽  
Inversion Center ◽  
Compound C ◽  
Intramolecular Hydrogen

The title compound, C20H18N4, was obtainedviathe condensation of 4,5-dimethylbenzene-1,2-diamine with pyridine-2-carbaldehyde. The plane of the 2-(pyridin-2-yl) substitutent is canted by 2.75 (11)° from the plane of the benzimidazole system. The molecule exhibits anS(6) C—H...N intramolecular hydrogen-bond motif. In the crystal, C—H...N hydrogen bonds link pairs of molecules related by a crystallographic inversion center, formingR22(20) rings. Additional weak C—H...N hydrogen bonds result inC(9) chains parallel to [001].

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).

scholarly journals N-[2-(Methylsulfanyl)phenyl]-2-sulfanylbenzamide

2012 ◽  
Vol 68 (8) ◽  
pp. o2400-o2400
Author(s):  
Chang-Chih Hsieh ◽  
Hon Man Lee ◽  
Yih-Chern Horng
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Intramolecular Hydrogen Bond ◽  
Title Compound ◽  
Aromatic Rings ◽  
Intermolecular Hydrogen Bonds ◽  
Methyl Group ◽  
Interplanar Angle ◽  
Compound C ◽  
Intramolecular Hydrogen

In the title compound, C14H13NOS2, the S atom with the methyl group is involved in an intramolecular hydrogen bond with the amido H atom. In the crystal, the sulfanyl H atoms form intermolecular hydrogen bonds with the O atoms, connecting the molecules into zigzag chains along thecaxis. The two aromatic rings exhibit a small interplanar angle of 16.03 (9)°.

scholarly journals (S,E)-3-[(2-Hydroxybenzylidene)amino]-2-(2-hydroxyphenyl)-2,3-dihydroquinazolin-4(1H)-one

2012 ◽  
Vol 68 (8) ◽  
pp. o2374-o2375 ◽  
Author(s):  
Daniel Tinguiano ◽  
Adama Sy ◽  
Ibrahima Elhadj Thiam ◽  
Mohamed Gaye ◽  
Pascal Retailleau
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Intramolecular Hydrogen Bond ◽  
Title Compound ◽  
The Other ◽  
Boat Conformation ◽  
Compound C ◽  
The Mean ◽  
Intramolecular Hydrogen

In the title compound, C21H17N3O3, the dihydroquinazoline ring adopts a screw-boat conformation and its stereogenic C atom has anSconfiguration. The dihedral angle between the mean planes of the two hydroxyphenyl rings is 86.61 (12)°. The amino H atom forms an intramolecular hydrogen bond with a phenol O atom, while the hydrazine N atom acts as an acceptor for the H atom of the other phenol group. In the crystal, O—H...N and O—H...O hydrogen bonds and weak C—H...centroid(π-ring) intermolecular interactions are observed, forming chains along [1-10] and [110].

scholarly journals Crystal structure ofN-[6-amino-5-(benzo[d]thiazol-2-yl)-3-cyano-4-methylsulfanyl-2-oxo-1,2-dihydropyridin-1-yl]-4-methylbenzenesulfonamide dimethylformamide monosolvate

2017 ◽  
Vol 73 (12) ◽  
pp. 1820-1822 ◽  
Author(s):  
Rasha A. Azzam ◽  
Galal H. Elgemeie ◽  
Rasha E. Elsayed ◽  
Peter G. Jones
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Intramolecular Hydrogen Bond ◽  
Title Compound ◽  
Ring System ◽  
Interplanar Angle ◽  
Compound C ◽  
Intramolecular Hydrogen

In the title compound, C21H17N5O3S3·C3H7NO, the toluenesulfonamide ring and the combined ring system involving the pyridone and benzothiazole rings subtend an interplanar angle of 39.86 (4)°. The pyridone and benzothiazyl rings are linked by the intramolecular hydrogen bond N—Hamine...Nthiazole. The DMF O atom accepts two classical hydrogen bonds. The molecules are linked by hydrogen bonds and an S...O contact to form layers parallel to thebcplane.

1-{[5-Fluoro-2-(trifluoromethyl)phenyl]iminomethyl}-2-naphthol

2007 ◽  
Vol 63 (3) ◽  
pp. o1407-o1408
Author(s):  
Yun-Fa Zheng ◽  
Liang-Gui Wang ◽  
Guo-Bing Yan
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Schiff Base ◽  
Intramolecular Hydrogen Bond ◽  
Title Compound ◽  
Stacking Interactions ◽  
Dimensional Chain ◽  
One Dimensional ◽  
Compound C ◽  
Intramolecular Hydrogen

The title compound, C18H11F4NO, a Schiff base, has been structurally characterized. One intramolecular hydrogen bond influences the conformation of the molecule. The crystal structure is extended into a one-dimensional chain along the c axis via π–π stacking interactions.

scholarly journals Crystal structure of N-(diphenylphosphoryl)-2-methoxybenzamide

2019 ◽  
Vol 75 (7) ◽  
pp. 939-941
Author(s):  
Victor A. Trush ◽  
Nataliia S. Kariaka ◽  
Viktoriya V. Dyakonenko ◽  
Svitlana V. Shishkina ◽  
Vladimir M. Amirkhanov
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Metal Ions ◽  
Intermolecular Interactions ◽  
Intramolecular Hydrogen Bond ◽  
Title Compound ◽  
Π Interactions ◽  
Compound C ◽  
Bidentate Chelate ◽  
Intramolecular Hydrogen

In the title compound, C20H18NO3P, the C=O and P=O groups of the carbacylamidophosphate (CAPh) fragments are located in a synclinal position relative to each other and are pre-organized for bidentate chelate coordination of metal ions. The N—H group is involved in the formation of an intramolecular hydrogen bond. In the crystal, molecules do not form strong intermolecular interactions but the molecules are linked via weak C—H...π interactions, forming chains along [001].

scholarly journals 2,2′-Dihydroxy-N,N′-(ethane-1,2-diyl)dibenzamide

2013 ◽  
Vol 69 (2) ◽  
pp. o201-o201 ◽  
Author(s):  
Daniel Pereira da Costa ◽  
Sabrina Madruga Nobre ◽  
Bruna Gonçalves Lisboa ◽  
Juliano Rosa de Menezes Vicenti ◽  
Davi Fernando Back
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Inversion Center ◽  
Asymmetric Unit ◽  
Compound C ◽  
Ring Motif

The asymmetric unit of the title compound, C16H16N2O4, contains one half-molecule, the whole molecule being generated by an inversion center located at the mid-point of the C—C bond of the central ethane group. An intramolecular O—H...O hydrogen bond forms anS(6) ring motif. In the crystal, molecules are connectedviaN—H...O hydrogen bonds, generating infinite chains along [1-10].

scholarly journals Crystal structure of 1-amino-2-oxo-2,5,6,7,8,9-hexahydro-1H-cyclohepta[b]pyridine-3-carbonitrile

2016 ◽  
Vol 72 (9) ◽  
pp. 1239-1241 ◽  
Author(s):  
Galal H. Elgemeie ◽  
Peter G. Jones
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Intramolecular Hydrogen Bond ◽  
Title Compound ◽  
Intermolecular Hydrogen Bond ◽  
Membered Ring ◽  
The Other ◽  
Double Layers ◽  
Compound C ◽  
Intramolecular Hydrogen

In the title compound, C11H13N3O, the seven-membered ring adopts a conformation such that the three atoms not involved in the aromatic plane lie on the same side of that plane. One hydrazinic H atom forms an intramolecular hydrogen bond to the O atom; the other forms a classical intermolecular hydrogen bond N—H...O, which combines with a `weak' Har...O interaction to build up double layers of molecules parallel to thebcplane.

N∊-Benzyloxycarbonyl-Nα-(2-nitrobenzenesulfonyl)-L-lysine

2000 ◽  
Vol 57 (1) ◽  
pp. o48-o49
Author(s):  
José Giraldés ◽  
Mark L. McLaughlin ◽  
Frank R. Fronczek
Keyword(s):  
Hydrogen Bond ◽  
Intramolecular Hydrogen Bond ◽  
Title Compound ◽  
Intermolecular Hydrogen Bond ◽  
Cooh Group ◽  
Extended Conformation ◽  
Compound C ◽  
Intramolecular Hydrogen ◽  
Hydrogen Bonded

The title compound, C20H23N3O8S, is in an extended conformation. The COOH group does not form hydrogen-bonded carboxyl dimers, but forms an intermolecular hydrogen bond with the NCOO carbonyl O atom [O...O 2.666 (2) Å]. The N atom bonded to S is pyramidal, and forms a bifurcated intramolecular hydrogen bond with carboxy and nitro O atoms.

(E)-3-(2-Chloro-3,3,3-trifluoroprop-1-enyl)-N-(9,10-dioxo-9,10-dihydroanthracen-1-yl)-2,2-dimethylcyclopropanecarboxamide

2007 ◽  
Vol 63 (11) ◽  
pp. o4201-o4201
Author(s):  
Fan-Yong Yan ◽  
Dong-Qing Liu
Keyword(s):  
Hydrogen Bond ◽  
Dihedral Angle ◽  
Intramolecular Hydrogen Bond ◽  
Title Compound ◽  
Crystal Packing ◽  
Cyclopropane Ring ◽  
Ring Systems ◽  
Compound C ◽  
Intramolecular Hydrogen

In the title compound, C23H17ClF3NO3, the dihedral angle between the dihydroanthracene and cyclopropane ring systems is 58.5 (4)°. The amino H atom forms an intramolecular hydrogen bond to a carbonyl O atom of the dioxodihydroanthracene moiety. The crystal packing is further stabilized by an intermolecular C—H...F contact.

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