Benzyl 6,6-dibromo-2β-chloromethyl-2α-methylpenicillanate

2007 ◽  
Vol 63 (3) ◽  
pp. o1184-o1185
Author(s):  
Xi-Zhao Wang ◽  
Li-Na Pang ◽  
Jun-Zhi Liu ◽  
Fang-Gang Sun ◽  
Jian-Wu Wang
Keyword(s):  
Title Compound ◽  
Normal Values ◽  
Crystal Packing ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Membered Ring ◽  
Bond Lengths ◽  
Compound C ◽  
Twist Conformation

In the title compound, C15H14Br2ClNO3S, all bond lengths and angles show normal values. The five-membered ring exhibits a twist conformation. The crystal packing is stabilized mainly by van der Waals forces.

4-Amino-6-chloro-8-p-tolylpteridin-7(8H)-one dichloromethane hemisolvate

2006 ◽  
Vol 62 (7) ◽  
pp. o2680-o2682
Author(s):  
Chong-Gang Duan ◽  
Jiong Jia ◽  
Jian-Wu Wang
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal Packing ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Asymmetric Unit ◽  
Bond Lengths ◽  
Compound C ◽  
Normal Ranges ◽  
Independent Molecules

The title compound, C13H10ClN5O·0.5CH2Cl2, crystallizes with two independent 4-amino-6-chloro-8-p-tolylpteridin-7(8H)-one molecules and one dichloromethane molecule in the asymmetric unit. The bond lengths and angles in the molecules are within normal ranges. Intermolecular N—H...N hydrogen bonds link the two independent molecules into hydrogen-bonded dimers. The crystal packing is further stabilized by van der Waals forces.

2,3-Dihydro-1,5-benzothiazepin-4(5H)-one

2006 ◽  
Vol 62 (5) ◽  
pp. o1831-o1832 ◽  
Author(s):  
Bing-Yi Qin ◽  
Gui-Long Zhao
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal Packing ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Asymmetric Unit ◽  
Bond Lengths ◽  
Compound C ◽  
Normal Ranges ◽  
Independent Molecules

The title compound, C9H9NOS, crystallizes with two independent molecules in the asymmetric unit. The bond lengths and angles in both molecules are within normal ranges. The crystal packing is stabilized by intermolecular N—H...O hydrogen bonds and van der Waals forces.

scholarly journals (E)-1-(4-Chlorophenyl)-3-(4-methoxyphenyl)prop-2-en-1-one

2006 ◽  
Vol 62 (4) ◽  
pp. o1627-o1628 ◽  
Author(s):  
Xiao-Yang Qiu ◽  
Sen-Lin Yang ◽  
Wei-Sheng Liu ◽  
Hai-liang Zhu
Keyword(s):  
Dihedral Angle ◽  
Normal Values ◽  
Crystal Packing ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Bond Lengths ◽  
Benzene Rings ◽  
Title Molecule

In the title molecule, C16H13ClO2, all bond lengths and angles show normal values. The two benzene rings make a dihedral angle of 21.0 (4)°. The crystal packing is stabilized by van der Waals forces.

Bis(imidazol-1-yl)methane

2006 ◽  
Vol 62 (5) ◽  
pp. o1798-o1799
Author(s):  
Jian Li
Keyword(s):  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Rotation Axis ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Compound C ◽  
Methylene Group

In the title compound, C7H8N4, the C atom of the bridging methylene group lies on a twofold rotation axis. The dihedral angle between the symmetry-related imidazole rings is 75.0 (2)°. The crystal packing is stabilized by van der Waals forces.

Ethyl 2-acetamidomethyl-5-methoxy-1-(phenylsulfonyl)indole-3-carboxylate

2007 ◽  
Vol 63 (11) ◽  
pp. o4223-o4223
Author(s):  
Pon. Sathya Moorthy ◽  
M. Balasubramanian ◽  
V. Dhayalan ◽  
A. K. Mohanakrishnan ◽  
M. N. Ponnuswamy
Keyword(s):  
Dihedral Angle ◽  
Title Compound ◽  
Phenyl Ring ◽  
Crystal Packing ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Ring System ◽  
Indole Ring ◽  
Π Interactions ◽  
Compound C

In the title compound, C21H22N2O6S, the dihedral angle between the sulfonyl-bound phenyl ring and the indole ring system is 79.4 (1)°. The crystal packing is controlled by intra- and intermolecular N—H...O, C—H...O and C—H...π interactions, in addition to van der Waals forces.

scholarly journals (3E)-3-{(2E)-3-[4-(Dimethylamino)phenyl]prop-2-enylidene}-3,4-dihydro-2H-chromen-4-one

IUCrData ◽  
2018 ◽  
Vol 3 (9) ◽  
Author(s):  
K. Biruntha ◽  
D. Reuben Jonathan ◽  
U. Mohamooda Sumaya ◽  
E. R. A. Dravida Thendral ◽  
G. Usha
Keyword(s):  
Dihedral Angle ◽  
Title Compound ◽  
Phenyl Ring ◽  
Crystal Packing ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Ring System ◽  
Compound C ◽  
Phenyl Rings

In the title compound, C20H19NO2, the (dimethylamino)phenyl ring and the chromanone ring system are linked via an α-β unsaturated carbon bridge. The dihedral angle between the two terminal phenyl rings is 29.66 (6)°. The tetrahydro-4H-pyran-4 one ring in the chromanone moiety adopts a sofa conformation. The crystal packing is stabilized only by van der Waals forces.

(E)-4-(Trifluoromethyl)benzaldehyde oxime

2006 ◽  
Vol 62 (7) ◽  
pp. o2683-o2684 ◽  
Author(s):  
Jiong Jia ◽  
Xi-Zhao Wang ◽  
Yan Zhang ◽  
Jian-Wu Wang
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal Packing ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Trifluoromethyl Group ◽  
Compound C

In the title compound, C8H6F3NO, the trifluoromethyl group displays rotational disorder. The crystal packing is stabilized by intermolecular O—H...N hydrogen bonds and van der Waals forces.

[3-(4-Chlorophenyl)isoxazol-5-yl]methanol

2006 ◽  
Vol 62 (4) ◽  
pp. o1298-o1299 ◽  
Author(s):  
Li-Da Tang ◽  
Da-Tong Zhang ◽  
Fang-Gang Sun ◽  
Gui-Yun Duan ◽  
Jian-Wu Wang
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Normal Values ◽  
Crystal Packing ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Bond Lengths ◽  
Isoxazole Ring ◽  
The Mean ◽  
Title Molecule

In the title molecule, C10H8ClNO2, the isoxazole ring shows normal values of bond lengths and angles. The mean planes of the benzene and isoxazole rings make a dihedral angle of 16.3 (2)°. Intermolecular O—H...N hydrogen bonds link the molecules into chains extended along the b axis. The crystal packing is further stablized by weak C—H...O interactions and van der Waals forces.

(E)-2-Acetyl-3-hydroxy-N-phenylbut-2-enethioamide

2006 ◽  
Vol 62 (7) ◽  
pp. o2854-o2855
Author(s):  
Hai-Lian Xiao ◽  
Fang-Fang Jian
Keyword(s):  
Hydrogen Bond ◽  
Title Compound ◽  
Crystal Packing ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Phenyl Isothiocyanate ◽  
Compound C

The title compound, C12H13NO2S, was prepared by the reaction of acetylacetone with phenyl isothiocyanate. In addition to the intramolecular O—H...O hydrogen bond, there is a weak intermolecular N—H...S hydrogen bond, which links the molecules into chains extended along the c axis. The crystal packing is further stabilized by van der Waals forces.

Difluoro[1-(1-naphthyliminomethyl)-2-naphtholato-N,O]boron

2006 ◽  
Vol 62 (7) ◽  
pp. o2625-o2626 ◽  
Author(s):  
Min Xia ◽  
Shao-Qin Ge ◽  
Xiang-Sheng Li
Keyword(s):  
Dihedral Angle ◽  
Title Compound ◽  
Boron Trifluoride ◽  
Crystal Packing ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Boron Trifluoride Etherate ◽  
Stacking Interactions ◽  
Compound C ◽  
The Mean

The title compound, C21H14BF2NO, was synthesized by the reaction of 3-[(E)-(naphthalen-1-ylimino)methyl]naphthalen-2-ol, diisopropylethylamine and boron trifluoride etherate. The mean planes of the two naphthalene systems make a dihedral angle of 71.97 (4)°. The crystal packing is stabilized by π–π stacking interactions and van der Waals forces.

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