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.

scholarly journals 3-(2-Pyridyl)-5-(4-pyridyl)-4-(p-tolyl)-1H-1,2,4-triazole

2009 ◽  
Vol 65 (6) ◽  
pp. o1225-o1225
Author(s):  
Lu-Tong Yuan ◽  
Hai Zhang ◽  
Zuo-Xiang Wang ◽  
Zhi-Rong Qu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Triazole Ring ◽  
Dihedral Angles ◽  
Stacking Interactions ◽  
Compound C ◽  
Hydrogen Bonding Interactions ◽  
Π Stacking ◽  
Centroid Distance

In the molecule of the title compound, C19H15N5, the dihedral angles formed by the plane of the triazole ring with those of the 2-pyridyl, 4-pyridyl andp-tolyl rings are 28.12 (10), 34.62 (10) and 71.43 (9)°, respectively. The crystal structure is consolidated by C—H...π hydrogen-bonding interactions and by π–π stacking interactions, with a centroid–centroid distance of 3.794 (4) Å.

3-n-Butyl-2-methoxy-1-benzothieno[3,2-d]pyrimidin-4(3H)-one

2006 ◽  
Vol 62 (4) ◽  
pp. o1319-o1320 ◽  
Author(s):  
Min-Hui Cao ◽  
Sheng-Zhen Xu ◽  
Yang-Gen Hu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Benzene Ring ◽  
Title Compound ◽  
Thiophene Ring ◽  
Stacking Interactions ◽  
Asymmetric Unit ◽  
Compound C ◽  
Π Stacking ◽  
Independent Molecules

The title compound, C15H16N2O2S, contains a five-membered thiophene ring fused to a benzene ring and a substituted pyrimidinone ring. All three rings in each of the independent molecules of the asymmetric unit lie in approximately the same plane. The crystal structure is stabilized by intermolecular C—H...O hydrogen bonding and π–π stacking interactions.

scholarly journals 2,4-Dibromo-2,3-dihydro-1H-inden-1-yl acetate

2012 ◽  
Vol 68 (6) ◽  
pp. o1884-o1884 ◽  
Author(s):  
Ísmail Çelik ◽  
Mehmet Akkurt ◽  
Makbule Yilmaz ◽  
Ahmet Tutar ◽  
Ramazan Erenler ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Stacking Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Cyclopentene Ring

In the title compound, C11H10Br2O2, the cyclopentene ring fused to the benzene ring adopts an envelope conformation, with the C atom attached to the Br atom as the flap. The crystal structure does not exhibit any classical hydrogen bonds. The molecular packing is stabilized by van der Waals forces and π–π stacking interactions with a centroid–centroid distance of 3.811 (4) Å.

Diphenylcarbonohydrazide–phenylsemicarbazide (1/1)

2006 ◽  
Vol 62 (5) ◽  
pp. o1719-o1721
Author(s):  
Chun-Xia Wei ◽  
Jian-Xin Chen ◽  
Zhong-Shui Li ◽  
Ting-Yan Lan ◽  
Yuan-Biao Huang
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Stacking Interactions ◽  
Compound C ◽  
Π Stacking

In the title compound, C13H14N4O·C7H9N3O, a phenylcarbonohydrazide molecule cocrystallizes with a phenylsemicarbazide molecule. In the crystal structure, extensive hydrogen-bonding and π–π stacking interactions stabilize the structure.

1,3:4,6-Di-O-benzylidene-N-cinnamyl-2,5-dideoxy-2,5-imino-L-iditol

2006 ◽  
Vol 62 (7) ◽  
pp. o3115-o3116 ◽  
Author(s):  
Chu-Yi Yu ◽  
Ying Fu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Network Structure ◽  
Title Compound ◽  
Stacking Interactions ◽  
Compound C ◽  
Π Stacking

In the crystal structure of the title compound, C29H27NO5, the molecules assemble into a network structure by both intermolecular C—H...O hydrogen bonding and C—H...π stacking interactions.

scholarly journals N-Methyl-N-nitroso-p-toluenesulfonamide

2014 ◽  
Vol 70 (7) ◽  
pp. o782-o782
Author(s):  
Kartik Rai ◽  
Vincent Wu ◽  
Priya Gupta ◽  
David A. Laviska ◽  
Benny C. Chan
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Methyl Groups ◽  
Stacking Interactions ◽  
Aromatic Rings ◽  
Compound C ◽  
Π Stacking ◽  
Centroid Distance

The crystal structure of the title compound, C8H10N2O3S, displays predominant C—H...O hydrogen-bonding and π–π stacking interactions. The hydrogen bonds are between the O atoms of the sulfonyl group and H atoms on methyl groups. The π–π stacking interactions occur between adjacent aromatic rings, with a centroid–centroid distance of 3.868 (11) Å. These interactions lead to the formation of chains parallel to (101).

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.

2,3,4,6-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.

2,8-Bis(diphenylamino)-5H-5λ6-dibenzo[b,d]thiophene 5,5-dioxide

2006 ◽  
Vol 62 (4) ◽  
pp. o1317-o1318 ◽  
Author(s):  
Ping-Hsin Huang ◽  
Tai-Hsiang Huang ◽  
Jiun-Yi Shen ◽  
Yuh-Sheng Wen
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Dihedral Angle ◽  
Title Compound ◽  
Thiophene Ring ◽  
Stacking Interactions ◽  
Ring Form ◽  
Compound C ◽  
Hydrogen Bonding Interactions ◽  
Benzene Rings

In the title compound, C36H26N2O2S, the two benzene rings fused to the thiophene ring form a dihedral angle of 8.78 (8)°. In the crystal structure, there are no significant hydrogen-bonding interactions or π–π stacking interactions between molecules.

scholarly journals Crystal structure of dimethyl 4,4′-dimethoxybiphenyl-3,3′-dicarboxylate

2016 ◽  
Vol 72 (3) ◽  
pp. 328-330 ◽  
Author(s):  
Fredrik Lundvall ◽  
Pascal D. C. Dietzel ◽  
Helmer Fjellvåg
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Crystal Packing ◽  
Van Der Waals Forces ◽  
Torsion Angles ◽  
Compound C ◽  
Hydrogen Bonding Interactions ◽  
Benzene Rings ◽  
Out Of Plane

In the title compound, C18H18O6, the benzene rings are coplanar due to the centrosymmetric nature of the molecule, with an inversion centre located at the midpoint of the C—C bond between the two rings. Consequently, the methyl carboxylate substituents are oriented in atransfashion with regards to the bond between the benzene rings. The methyl carboxylate and methoxy substituents are rotated slightly out of plane relative to their parent benzene rings, with dihedral and torsion angles of 18.52 (8) and −5.22 (15)°, respectively. The shortest O...H contact between neighbouring molecules is about 2.5 Å. Although some structure-directing contributions from C—H...O hydrogen-bonding interactions are possible, the crystal packing seems primarily directed by weak van der Waals forces.

Sign in / Sign up

Export Citation Format

Share Document