(1S,3R,6S,7R)-3,7-Dichloro-trans-himachalane

2007 ◽  
Vol 63 (3) ◽  
pp. o1497-o1499 ◽  
Author(s):  
Najia Ourhriss ◽  
Noureddine Mazoir ◽  
Jean-Claude Daran ◽  
Moha Berraho ◽  
Ahmed Benharref
Keyword(s):  
Hydrogen Bonding ◽  
Title Compound ◽  
Chair Conformation ◽  
Membered Ring ◽  
Hydrogen Bonding Interaction ◽  
Compound C ◽  
Bonding Interaction ◽  
A Chain

The molecule of the title compound, C15H26Cl2, is built up from two fused six-membered and seven-membered rings. The six-membered ring has a perfect chair conformation, whereas the seven-membered ring displays a twist-chair conformation. A weak C—H...Cl hydrogen-bonding interaction links the molecule into a chain parallel to the a axis.

scholarly journals Crystal structure of 4-methyl-N-{[1-(4-methylbenzoyl)piperidin-4-yl]methyl}benzamide

2014 ◽  
Vol 70 (11) ◽  
pp. o1157-o1157
Author(s):  
K. Prathebha ◽  
D. Reuben Jonathan ◽  
S. Sathya ◽  
R. Vasanthi ◽  
G. Usha
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Dihedral Angle ◽  
Title Compound ◽  
Chair Conformation ◽  
Piperidine Ring ◽  
Hydrogen Bonding Interaction ◽  
Compound C ◽  
Bonding Interaction ◽  
Benzene Rings

In the title compound, C22H27N2O2, the piperidine ring adopts a half-chair conformation with the benzene rings inclined in atransorientation with respect to the piperidine ring [dihedral angle between the benzene rings = 89.1 (1)°]. In the crystal, a three-centre asymmetric N—H...O/C—H...O hydrogen-bonding interaction leads to the formation of chains extending along thea-axis direction.

2,4-Dibenzoyl-3,5-bis(4-methoxylphenyl)-1-phenylcyclohexanol

2006 ◽  
Vol 62 (4) ◽  
pp. o1631-o1632 ◽  
Author(s):  
Xinxiang Luo ◽  
Zixing Shan
Keyword(s):  
Hydrogen Bonding ◽  
Title Compound ◽  
Chair Conformation ◽  
Membered Ring ◽  
Hydroxyl Group ◽  
Intermolecular Hydrogen Bonding ◽  
Compound C

The title compound, C40H36O5, was synthesized from p-anisaldehyde and acetophenone. The central six-membered ring adopts a chair conformation and most of the bulky side groups are located in equatorial positions. The hydroxyl group is involved in weak intra- and intermolecular hydrogen bonding.

scholarly journals 1-Deacetoxy-1-oxocaesalmin

2014 ◽  
Vol 70 (6) ◽  
pp. o662-o662
Author(s):  
Juan Feng ◽  
Jian-Long Zhang ◽  
Rong-Rong Zhang ◽  
Li-Jun Ruan ◽  
Ren-Wang Jiang
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Furan Ring ◽  
Chair Conformation ◽  
Chain Structure ◽  
Membered Ring ◽  
Axis Direction ◽  
Compound C ◽  
A Chain

The title compound, C24H30O7, is a diterpenoid isolated from the seeds ofCaesalpinia minax. It consists of two cyclohexane rings (AandB), one unsaturated six-membered ring (C) and one furan ring (D). The stereochemistry of the ring junctures isA/B transandB/C trans. RingsAandBhave normal chair conformations whileCadopts a twisted half-chair conformation due to fusion to the furan ring which is planar [r.m.s. deviation = 0.0009 (2) Å]. In the crystal, hydroxyl O—H...Ocarbonylhydrogen bonds link the molecules into a chain structure extending along thea-axis direction.

scholarly journals (Z)-2-(5-Chloro-2-oxoindolin-3-ylidene)-N-methylhydrazinecarbothioamide

2012 ◽  
Vol 68 (4) ◽  
pp. o964-o965 ◽  
Author(s):  
Amna Qasem Ali ◽  
Naser Eltaher Eltayeb ◽  
Siang Guan Teoh ◽  
Abdussalam Salhin ◽  
Hoong-Kun Fun
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Three Dimensional ◽  
Hydrogen Bonding Interaction ◽  
Compound C ◽  
Hydrogen Bonding Interactions ◽  
Dimensional Network ◽  
Bonding Interaction ◽  
A Chain ◽  
Graph Sets

In the title compound, C10H9ClN4OS, an intramolecular N—H...O hydrogen-bonding interaction and an N—H...N interaction generate ring motifs [graph setsS(6) andS(5), respectively]. In the crystal, molecules form a chain through N—H...O hydrogen bonds, and these are extended by N—H...S hydrogen-bonding interactions into an infinite three-dimensional network. The crystal structure also exhibits weak C—H...π interactions.

scholarly journals 2-[(E)-(2-Aminophenyl)iminomethyl]-5-(dimethylamino)phenol

2009 ◽  
Vol 65 (6) ◽  
pp. o1232-o1232
Author(s):  
Yan-Hong Yu ◽  
Kun Qian
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Double Bond ◽  
Dihedral Angle ◽  
Title Compound ◽  
Hydrogen Bonding Interaction ◽  
Compound C ◽  
Bonding Interaction ◽  
Benzene Rings

The molecule of the title compound, C17H21N3O, displays atransconfiguration with respect to the C=N double bond. The dihedral angle between the planes of the two benzene rings is 50.96 (11)° and a strong intramolecular O—H...N hydrogen bond is present. An intermolecular N—H...O hydrogen-bonding interaction stabilizes the crystal structure.

8-(2-Phenylethylamino)quinoline

2000 ◽  
Vol 57 (1) ◽  
pp. o4-o5
Author(s):  
Daniel E. Lynch ◽  
Ian McClenaghan
Keyword(s):  
Hydrogen Bonding ◽  
Dihedral Angle ◽  
Title Compound ◽  
Hydrogen Bonding Interaction ◽  
Ring Systems ◽  
Compound C ◽  
Bonding Interaction

The structure of the title compound, C17H16N2, (I), comprises twisted molecules that contain a single intramolecular N—H...N hydrogen-bonding interaction. The dihedral angle between the two ring systems is 65.72 (4)°.

scholarly journals 4′-[2-(2-Ethoxyethoxy)ethoxy]biphenyl-4-carboxylic acid: correlation between its crystalline and smectic phases

2009 ◽  
Vol 65 (3) ◽  
pp. o81-o84 ◽  
Author(s):  
Rosana S. Montani ◽  
Raúl O. Garay ◽  
Fabio D. Cukiernik ◽  
Maria T. Garland ◽  
Ricardo Baggio
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Carboxylic Acid ◽  
Title Compound ◽  
Carboxyl Groups ◽  
Hydrogen Bonding Interaction ◽  
Compound C ◽  
Smectic Phases ◽  
Bonding Interaction ◽  
Smectic Mesophase

The crystal structure of the dimeric title compound, C19H22O5, is dominated by a head-to-head hydrogen-bonding interaction between centrosymmetrically related carboxyl groups in each monomer. The result is a dimeric axis of unusual length (ca34 Å), but still shorter than what could be expected for a fully extended chain, owing to two turning points in the oligoethoxy ends. This allows for an explanation of the structure of the smectic mesophase exhibited by this compound and at the same time fully validates former geometric estimations based on PM3 calculations.

scholarly journals 4-Dichloromethyl-4-methyl-5-(nitromethyl)cyclohex-2-enone

2013 ◽  
Vol 69 (11) ◽  
pp. o1638-o1638 ◽  
Author(s):  
Sladjana B. Novaković ◽  
Marko V. Rodić ◽  
Željko K. Jaćimović ◽  
Zoran Ratković ◽  
Slobodan Sukdolak
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Chair Conformation ◽  
Membered Ring ◽  
Axis Direction ◽  
Compound C ◽  
Acceptor Atom ◽  
A Chain

In the title compound, C9H11Cl2NO3, the six-membered ring adopts a screw-chair conformation. In the crystal, two different C—H...O hydrogen bonds involving the same acceptor atom connect the molecules into a chain extending along thec-axis direction.

tert-Butyl N-(3,6-dihydro-1,2-dioxin-4-ylmethyl)carbamate

2007 ◽  
Vol 63 (11) ◽  
pp. o4301-o4301 ◽  
Author(s):  
Daniel Sejer Pedersen ◽  
Dennis K. Taylor ◽  
Edward R. T. Tiekink
Keyword(s):  
Hydrogen Bonding ◽  
Title Compound ◽  
Three Dimensional ◽  
Site Occupancy ◽  
Chair Conformation ◽  
Membered Ring ◽  
Dimensional Structure ◽  
Three Dimensional Structure ◽  
Compound C ◽  
Hydrogen Bonding Interactions

The six-membered ring in the title compound, C10H17NO4, has a half-chair conformation and lies to one side of the central chromophore. Molecules are connected into a supramolecular chain via N—H...O hydrogen-bonding interactions and these are consolidated into a three-dimensional structure via C—H...O interactions. Two C atoms and two O atoms in the ring are disordered over two positions; the site occupancy factors are ca 0.7 and 0.3.

2-(2,4-Dichloro-6-methylphenoxy)-3-isopropyl-5,6,7,8-tetrahydrobenzothieno[2,3-d]pyrimidin-4(3H)-one

2007 ◽  
Vol 63 (3) ◽  
pp. o1142-o1144 ◽  
Author(s):  
Ai-Hua Zheng ◽  
Ji-Yin Long ◽  
Xiao-Hua Zeng ◽  
Hong-Mei Wang
Keyword(s):  
Hydrogen Bonding ◽  
Title Compound ◽  
Crystal Packing ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Ring System ◽  
Hydrogen Bonding Interaction ◽  
Compound C ◽  
Bonding Interaction

In the title compound C20H21Cl2N2O2S, the thienopyrimidine ring system is essentially planar. The crystal packing is stabilized by van der Waals forces and by an intermolecular C—H...O hydrogen-bonding interaction, which links the molecules into zigzag chains.

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