scholarly journals Crystal structure of 3,6-bis(pyridin-2-yl)-1,4-dihydro-1,2,4,5-tetrazine

2019 ◽  
Vol 75 (1) ◽  
pp. 86-88
Author(s):  
Kinga Wzgarda-Raj ◽  
Agnieszka J. Rybarczyk-Pirek ◽  
Sławomir Wojtulewski ◽  
Marcin Palusiak
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Intermolecular Hydrogen Bonding ◽  
Compound C

The structure of the title compound, C12H10N6, at 100 K has monoclinic (P21/n) symmetry. Crystals were obtained as a yellow solid by reduction of 3,6-bis(pyridin-2-yl)-1,2,4,5-tetrazine. The structure displays intermolecular hydrogen bonding of the N—H...N type, ordering molecules into infinite ribbons extending along the [100] direction.

(2R,3S,4S,5R)-4-Hydroxy-3-iodo-5-methyltetrahydro-2-furylmethyl benzoate

2000 ◽  
Vol 57 (1) ◽  
pp. o58-o60
Author(s):  
Sean P. Bew ◽  
Mark E. Light ◽  
Michael B. Hursthouse ◽  
David W. Knight ◽  
Robert J. Middleton
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Structure Determination ◽  
Title Compound ◽  
Crystal Structure Determination ◽  
Intermolecular Hydrogen Bonding ◽  
Compound C ◽  
Relative Stereochemistry

The crystal structure determination of the title compound, C13H15IO4, has allowed the relative stereochemistry between the tetrasubstituted C atoms on the tetrahydrofuran moiety to be confirmed. The title compound is a precursor of the ionophoric antibiotic Aplasmomycin. The compound is involved in both intra- and intermolecular hydrogen bonding, the latter link the molecules into chains running along thebaxis.

(13bR,13cS)-rel-11b,11c-Diphenyl-6,11-dihydro-1H,3H,4H,13H-2-oxa-3a,4a,5a,11a,12a,13a-hexaazabenz[f]indeno[2,1,8-ija]naphth[2,3-f]azulene-4,6,11,13-tetrone chloroform solvate

2006 ◽  
Vol 62 (7) ◽  
pp. o2945-o2946
Author(s):  
Sheng-li Hu ◽  
Hui-Zhen Guo ◽  
Neng-Fang She
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Intermolecular Hydrogen Bonding ◽  
Molecular Tweezers ◽  
Compound C ◽  
Important Intermediate

The crystal structure of the title compound, C28H22N6O5·CHCl3, an important intermediate for molecular tweezers, shows intermolecular hydrogen bonding.

scholarly journals 5-Amino-1-(2′,3′-O-isopropylidene-D-ribityl)-1H-imidazole-4-carboxamide: a crystal structure withZ′ = 4

2017 ◽  
Vol 73 (2) ◽  
pp. 183-187 ◽  
Author(s):  
Vincenzo Piccialli ◽  
Nicola Borbone ◽  
Giorgia Oliviero ◽  
Gennaro Piccialli ◽  
Stefano D'Errico ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Monoclinic Space Group ◽  
Intermolecular Hydrogen Bonding ◽  
Asymmetric Unit ◽  
Compound C ◽  
Independent Molecules ◽  
Intramolecular Hydrogen ◽  
Similar Conformation

The title compound, C12H20N4O5, crystallizes in the monoclinic space groupP21, with four crystallographically independent molecules in the asymmetric unit. The four molecules have a very similar conformation that is basically determined by the formation of two intramolecular hydrogen bonds between the amino NH2donors and the carbonyl and ring O-atom acceptors, forming, respectively,R(6) andR(7) ring motifs.. In the crystal, intermolecular hydrogen bonding leads to the formation ofR22(10) ring patterns, involving one amide CONH2donor and an imidazole N-atom acceptor. The cluster of the four independent molecules has approximate non-crystallographicC2point symmetry. The structural analysis also shows that during the synthesis of the title compound, the reductive cleavage of the D-ribose ring of the inosine precursor proceeds stereoselectively, with retention of configuration.

N,N′-Bis[(4-chloroanilino)thiocarbonyl]isophthalamide dimethylformamide solvate

2006 ◽  
Vol 62 (5) ◽  
pp. o1791-o1792
Author(s):  
You-Ming Zhang ◽  
Cheng Cao ◽  
Qi Lin ◽  
Tai-Bao Wei
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Dihedral Angles ◽  
Intermolecular Hydrogen Bonding ◽  
Compound C ◽  
Π Stacking ◽  
Benzene Rings

The principal molecule of the title compound, C22H16Cl2N4O2S2·C3H7NO, is not planar; the three benzene rings are tilted with respect to each other, with dihedral angles of 5.51 (11), 60.06 (12) and 64.33 (11)°. Intermolecular hydrogen bonding and π–π stacking help to stabilize the crystal structure.

2-Diethylamino-6-ethyl-6-methyl-3-phenylthieno[2,3-d]pyrimidin-4(3H)-one

2006 ◽  
Vol 62 (7) ◽  
pp. o2862-o2863
Author(s):  
Zheng-Dong Fang ◽  
Ming-Wu Ding
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Stacking Interactions ◽  
Intermolecular Hydrogen Bonding ◽  
Compound C ◽  
Hydrogen Bonding Interactions ◽  
Π Stacking

In the title compound, C19H23N3OS, the two fused rings of the thieno[2,3-d]pyrimidin-4(3H)-one system are almost coplanar. The packing of the molecules in the crystal structure is determined by van der Waals forces. No intermolecular hydrogen-bonding interactions or π–π stacking interactions are present in the crystal structure.

3,3′-(4-Amino-4H-1,2,4-triazole-3,5-diyl)dibenzoic acid

2006 ◽  
Vol 62 (7) ◽  
pp. o2791-o2792 ◽  
Author(s):  
Peng Wang ◽  
Jian Ping Ma ◽  
Ru-Qi Huang ◽  
Yu-Bin Dong
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Intermolecular Hydrogen Bonding ◽  
Compound C ◽  
Hydrogen Bonding Network

The title compound, C16H12N4O4, has a non-planar molecular structure. An intermolecular hydrogen-bonding network helps to stabilize the crystal structure.

2,3,4,6-Tetra-O-acetyl-N-(2-hydroxybenzylidene)-β-D-galactopyranosylamine

2006 ◽  
Vol 62 (5) ◽  
pp. o2069-o2071
Author(s):  
Mehmet Akkurt ◽  
Sema Öztürk Yıldırım ◽  
Ali Asghar Jarrahpour ◽  
Parvaneh Alvand ◽  
Orhan Büyükgüngör
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Chair Conformation ◽  
Intermolecular Hydrogen Bonding ◽  
Compound C ◽  
Hydrogen Bonding Interactions

In the title compound, C21H25NO10, the six-membered pyranosyl ring adopts a chair conformation. The crystal structure contains intra- and intermolecular hydrogen-bonding interactions.

scholarly journals Crystal structure and synthesis of 3-(1H-pyrrol-2-yl)-1-(thiophen-2-yl)propanone

2018 ◽  
Vol 74 (10) ◽  
pp. 1463-1466 ◽  
Author(s):  
Dáire Gibbons ◽  
Ganapathi Emandi ◽  
Mathias O. Senge
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Previous Literature ◽  
Maximum Deviation ◽  
Intermolecular Hydrogen Bonding ◽  
Compound C ◽  
Ketone Carbonyl ◽  
The Mean

The title compound, C11H9NOS, was obtained in an improved yield compared to previous literature methods. The molecule is essentially planar with a maximum deviation of 0.085 Å from the mean plane through all non-H atoms. There is directive intermolecular hydrogen bonding in the form of N—H...O hydrogen bonds with a distance of 2.889 (3) Å between the pyrrole amine and the ketone carbonyl O atom. The resulting hydrogen-bonding network defines a ribbon parallel to the a axis. These ribbons form offset stacks along the b axis.

scholarly journals Crystal structure of 5-benzoyl-2,4-diphenyl-4,5-dihydrofuran-3-carbonitrile

2015 ◽  
Vol 71 (9) ◽  
pp. o663-o664
Author(s):  
V. Rajni Swamy ◽  
R.V. Krishnakumar ◽  
S. Sivakumar ◽  
N. Srinivasan ◽  
R. Ranjith Kumar
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Crystal Lattice ◽  
Torsion Angle ◽  
Title Compound ◽  
Intermolecular Hydrogen Bonding ◽  
Compound C ◽  
Benzoyl Group ◽  
Graph Set

In the title compound, C24H17NO2, the carbonyl O atom of the benzoyl group isciswith respect to the furanyl O atom, and the associated O—C—C—O torsion angle is 4.62 (19)°. The puckering of the dihydrofuran ring is close to twisted (4T5), with parametersQ= 0.1856 (16) Å and φ = 313.5 (5)°. Molecules are interconnectedviaa C—H...N and a C—H...O hydrogen bond, leading to layers parallel to the (200) plane and characterized byR44(28) andR44(36) graph-set motifs. The furan O atom does not participate in intermolecular hydrogen bonding. The crystal lattice encompasses a solvent-accessible void of 24.7 (8) Å3.

2,4,6-Trimethylpyridine-3,5-dicarbonitrile

2006 ◽  
Vol 62 (7) ◽  
pp. o2765-o2767
Author(s):  
Hong-Li Wang ◽  
Bin Zhang ◽  
Yi Dai
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Asymmetric Unit ◽  
Compound C ◽  
Hydrogen Bonding Interactions

The title compound, C10H9N3, is essently planar, except for the methyl H atoms. The asymmetric unit consists of two molecules. In the crystal structure, weak intramolecular C—H...N hydrogen-bonding interactions occur, linking the molecules into chains propagating along the a axis.

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