(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.

N-Benzyl-1-(dimethylamino)-2-methyl-1-oxopropan-2-aminium bromide

2006 ◽  
Vol 62 (7) ◽  
pp. o2971-o2972 ◽  
Author(s):  
Pavel Tuzina ◽  
Andreas Fischer ◽  
Peter Somfai
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal Packing ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Compound C ◽  
Hydrogen Bonded

The title compound, C13H21N2O+·Br−, was crystallized from a CH2Cl2 solution of N 2,N 2-dibenzyl-N,N,2-trimethylalaninamide and BBr3. The geometry of the cation is unexceptional. Intermolecular N—H...O and N—H...Br hydrogen bonds link two cations and two anions into a hydrogen-bonded cluster. The crystal packing is further stabilized 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.

scholarly journals Crystal structure of bis(2-methyl-1H-imidazol-3-ium) tetrachloridocobaltate(II)

2015 ◽  
Vol 71 (9) ◽  
pp. 1064-1066 ◽  
Author(s):  
Mouhamadou Birame Diop ◽  
Libasse Diop ◽  
Thierry Maris
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal Packing ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Asymmetric Unit ◽  
Compound C ◽  
Anions And Cations

The asymmetric unit of the title compound, (C4H7N2)2[CoCl4], consists of two 2-methylimidazolium cations and one tetrahedral [CoCl4]2−anion. The anions and cations interact through N—H...Cl hydrogen bonds to define layers with a stacking direction along [100]. Besides van der Waals forces, weak C—H...Cl interactions between these layers stabilize the crystal packing.

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 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.

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.

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.

1,5-Anhydro-2,3,4,6-tetra-O-acetyl-D-lyxo-hex-1-enitol

2007 ◽  
Vol 63 (11) ◽  
pp. o4321-o4321
Author(s):  
Yan Zhang ◽  
Jiong Jia ◽  
Li-Na Pang ◽  
Jian-Wu Wang
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystalline State ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Chair Conformation ◽  
Compound C

The title compound, C14H18O9, adopt the half-chair conformation 4 H 5 in the crystalline state. The structure is stabilized by C—H...O hydrogen bonds, in addition to van der Waals forces.

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