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.

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.

(E)-2-Bromo-4,5-dimethoxybenzaldehyde oxime

2006 ◽  
Vol 62 (5) ◽  
pp. o1946-o1947
Author(s):  
Xiang Li ◽  
Da-Min Tian
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal Packing ◽  
Stacking Interactions ◽  
Asymmetric Unit ◽  
Bond Lengths ◽  
Compound C ◽  
Π Stacking ◽  
Independent Molecules

The title compound, C9H10BrNO3, which exists as the E isomer, crystallizes with two independent molecules in the asymmetric unit. The bond lengths and angles in both molecules are normal. The crystal packing is stabilized by intermolecular O—H...O hydrogen bonds, which link the molecules into circular tetramers, and by weak π–π stacking interactions.

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.

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.

scholarly journals N-Methyl-2-(1,2,3,4-tetrahydronaphthalen-1-ylidene)hydrazinecarbothioamide

2014 ◽  
Vol 70 (3) ◽  
pp. o301-o302 ◽  
Author(s):  
Adriano Bof de Oliveira ◽  
Bárbara Regina Santos Feitosa ◽  
Christian Näther ◽  
Inke Jess
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Crystal Packing ◽  
Dihedral Angles ◽  
Independent Molecule ◽  
Asymmetric Unit ◽  
Axis Direction ◽  
Compound C ◽  
Independent Molecules

There are two independent molecules in the asymmetric unit of the title compound, C12H15N3S, both of which display disorder of several C atoms in the N-bound ring (occupancy ratios of 0.75:0.25 in the first independent molecule and 0.50:0.50 in the second) with the methyl H atoms also being disordered in the first molecule (occupancy ratio of 0.70:0.30). The planes of the benzene ring and the N—N—C—N fragment make dihedral angles of 12.92 (14)° in the first independent molecule and 7.60 (13)° in the second. In the crystal, molecules are linked by weak N—H...S hydrogen bonds into chains along thea-axis direction. The crystal packing ressembles a herringbone arrangement.

scholarly journals Crystal structure of ethyl 2-[(4-bromophenyl)amino]-3,4-dimethylpent-3-enoate

2014 ◽  
Vol 70 (10) ◽  
pp. o1122-o1123
Author(s):  
Julio Zukerman-Schpector ◽  
I. Caracelli ◽  
Hélio A. Stefani ◽  
Amna N. Khan ◽  
Edward R. T. Tiekink
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Dihedral Angles ◽  
Methyl Groups ◽  
Asymmetric Unit ◽  
Compound C ◽  
Independent Molecules

In the title compound, C15H20BrNO2, there are two independent molecules (AandB) comprising the asymmetric unit and these adopt very similar conformations. InA, the dihedral angle between the CO2and MeC=CMe2groups is 80.7 (3)°, and these make dihedral angles of 3.5 (3) and 84.09 (16)°, respectively, with the bromobenzene ring. The equivalent dihedral angles for moleculeBare 78.4 (3), 2.1 (3) and 78.37 (12)°, respectively. The most prominent interactions in the crystal packing are amine-N—H...O(carbonyl) hydrogen bonds between the two independent molecules, resulting in non-centrosymmetric ten-membered {...OC2NH}2synthons. Statistical disorder is noted for each of the terminal methyl groups of the ethyl residues.

(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.

scholarly journals 1,1′-(Diphosphene-1,2-diyl)bis(2,2,6,6-tetramethylpiperidine)

IUCrData ◽  
2017 ◽  
Vol 2 (6) ◽  
Author(s):  
Martha Höhne ◽  
Anke Spannenberg ◽  
Bernd H. Müller ◽  
Uwe Rosenthal
Keyword(s):  
Title Compound ◽  
Crystal Packing ◽  
Van Der Waals ◽  
Van Der Waals Interactions ◽  
Asymmetric Unit ◽  
Triclinic Space Group ◽  
Space Group ◽  
Compound C ◽  
Independent Molecules

The title compound, C18H36N2P2, crystallizes in the triclinic space groupP-1 with two independent molecules in the asymmetric unit. Both molecules adopt atransconfiguration of the tetramethylpiperidine units along the P=P axis. The crystal packing is stabilized only by van der Waals interactions.

scholarly journals 5,13-Bis(4-methoxyphenyl)dinaphtho[2,3-b:2′,3′-d]thiophene S,S-dioxide dichloromethane hemisolvate

IUCrData ◽  
2019 ◽  
Vol 4 (11) ◽  
Author(s):  
R. Manickam ◽  
G. Jagadeesan ◽  
S. Muhamad Rafiq ◽  
A. K. Mohanakrishnan ◽  
G. Srinivasan
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal Packing ◽  
Solvent Molecule ◽  
Asymmetric Unit ◽  
Compound C ◽  
Independent Molecules

The title compound, C34H24O4S·0.5CH2Cl2, crystallizes with two independent molecules and one dichloromethane solvent molecule in the asymmetric unit. The crystal packing is consolidated by C—H...O hydrogen bonds.

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.

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