(aR,1R,2S,5R)-5-Methyl-2-(1-methyl-1-phenylethyl)cyclohexyl (4-tert-butylcyclohexylidene)acetate

2006 ◽  
Vol 62 (7) ◽  
pp. o2967-o2968
Author(s):  
Jin-Long Wu
Keyword(s):  
Carbonyl Group ◽  
Title Compound ◽  
Olefinic Bond ◽  
Compound C

In the molecule of the title compound, C28H42O2, the two cyclohexane rings adopt chair conformations. The olefinic bond and carbonyl group are approximately coplanar.

scholarly journals Crystal structure of 1-[(Z)-2-phenylhydrazin-1-ylidene]naphthalen-2(1H)-one

2015 ◽  
Vol 71 (5) ◽  
pp. o303-o303
Author(s):  
Ali Benosmane ◽  
Mohamed Amine Benaouida ◽  
Assia Mili ◽  
Abdelkader Bouchoul ◽  
Hocine Merazig
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Carbonyl Group ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Imino Group ◽  
Compound C ◽  
Supramolecular Chains

In the title compound, C16H12N2O, the dihedral angle between the planes of the benzene ring and naphthalenone ring system is 1.89 (8)°; an intramolecular N—H...O hydrogen bond occurs between the imino group and the carbonyl group. In the crystal, molecules are linked by weak C—H...π interactions into supramolecular chains propagating along the [01-1] direction.

scholarly journals Methyl 2,6-diphenyl-1-p-tolyl-4-(p-tolylamino)-1,2,5,6-tetrahydropyridine-3-carboxylate

2012 ◽  
Vol 68 (8) ◽  
pp. o2392-o2393 ◽  
Author(s):  
K. N. Venugopala ◽  
Susanta K. Nayak ◽  
Bharti Odhav
Keyword(s):  
Hydrogen Bonds ◽  
Carbonyl Group ◽  
Title Compound ◽  
Molecular Conformation ◽  
Three Dimensional ◽  
Molecular Assembly ◽  
Boat Conformation ◽  
Π Interactions ◽  
Compound C

In the title compound, C33H32N2O2, the tetrahydropyridine ring adopts a boat conformation with the carbonyl group in ans-cisconformation with respect to the C=C bond of the six-membered tetrahydropyridine ring. The molecular conformation is stabilized by intramolecular N—H...O, C—H...O and C—H...π interactions. Formation of centrosymmetric head-to-head dimers is observed through pairwise intermolecular N—H...O hydrogen bonds. Additional weak C—H...O and C—H...π interactions stabilize the three-dimensional molecular assembly.

scholarly journals (E)-1-(1,3-Benzodioxol-5-yl)-3-[4-(dimethylamino)phenyl]prop-2-en-1-one

IUCrData ◽  
2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Karthik Kumara ◽  
S. Naveen ◽  
A. Dileep Kumar ◽  
K. Ajay Kumar ◽  
N. K. Lokanath ◽  
...  
Keyword(s):  
Double Bond ◽  
Carbonyl Group ◽  
Dihedral Angle ◽  
Torsion Angle ◽  
Title Compound ◽  
Compound C ◽  
Benzene Rings ◽  
Olefinic Double Bond

In the title compound, C18H17NO3, the olefinic double bond adopts anEconformation. The molecule is nearly planar as indicated by the dihedral angle of 3.11 (6)° between the benzodioxole and benzene rings. The carbonyl group lies in the plane of the olefinic double bond and the benzodioxole ring. Thetransconformation of the C=C double bond in the central enone group is confirmed by the C=C—C—C torsion angle of −177.82 (14)°.

scholarly journals 2,2,6,6-Tetrabromo-3,4,4,5-tetramethoxycyclohexanone

2014 ◽  
Vol 70 (7) ◽  
pp. o826-o826
Author(s):  
Md. Serajul Haque Faizi ◽  
Ashraf Mashrai ◽  
M. Shahid
Keyword(s):  
Hydrogen Bonding ◽  
Schiff Base ◽  
Carbonyl Group ◽  
Title Compound ◽  
Chair Conformation ◽  
Molecular Bromine ◽  
Axis Direction ◽  
Compound C ◽  
Hydrogen Bonding Interactions ◽  
Methoxy Groups

In the title compound, C10H14Br4O5, synthesized from the methoxy Schiff baseN-(pyridin-2-ylmethyl)methoxyaniline and molecular bromine, the cyclohexanone ring has a chair conformation with one of the four methoxy groups equatorially orientated with respect to the carbonyl group and the others axially orientated. The C—Br bond lengthsvary from 1.942 (4) to1.964 (4) Å. In the crystal, weak C—H...Ocarbonylhydrogen-bonding interactions generate chains extending along theb-axis direction. Also present in the structure are two short intermolecular Br...Omethoxyinteractions [3.020 (3) and 3.073 (4) Å].

scholarly journals 1,5-Bis(4-chlorophenyl)penta-1,4-dien-3-one

2006 ◽  
Vol 62 (5) ◽  
pp. o1973-o1975 ◽  
Author(s):  
Ray J. Butcher ◽  
H. S. Yathirajan ◽  
B. K. Sarojini ◽  
B. Narayana ◽  
K. K. Vijaya Raj
Keyword(s):  
Carbonyl Group ◽  
Optical Activity ◽  
Title Compound ◽  
Rotation Axis ◽  
Compound C ◽  
Non Linear ◽  
Linear Optical

The title compound, C17H12Cl2O, shows significant non-linear optical activity. A twofold rotation axis passes through the carbonyl group.

scholarly journals Methyl 4-amino-2-chloropyrimidine-5-carboxylate

2014 ◽  
Vol 70 (8) ◽  
pp. o869-o869
Author(s):  
Ya-Ming Wu
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Carbonyl Group ◽  
Title Compound ◽  
Maximum Deviation ◽  
Amino Group ◽  
Compound C ◽  
Supramolecular Chains

In the title compound, C6H6ClN3O2, all non-H atoms are approximately coplanar [maximum deviation = 0.012 (4) Å]; an intramolecular N—H...O hydrogen bond occurs between the amino group and the carbonyl group. In the crystal, molecules are linked by N—H...N hydrogen bonds into supramolecular chains propagated along [101].

2-(Cyclopentylsulfanyl)-6-(1-naphthoyl)pyrimidin-4(3H)-one

2006 ◽  
Vol 62 (4) ◽  
pp. o1485-o1487
Author(s):  
Lei Ji ◽  
Yun-Yan Kuang ◽  
Fen-Er Chen ◽  
Min-Qin Chen
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Carbonyl Group ◽  
Title Compound ◽  
Ring System ◽  
Compound C ◽  
Naphthyl Ring

In the structure of the title compound, C20H18N2O2S, the carbonyl group, the naphthyl ring system and the cyclopentyl ring are not in the plane of the pyrimidinyl ring. In the crystal structure, pairs of molecules are connected into dimers via N—H...O hydrogen bonding

scholarly journals Crystal structure of 3-(morpholin-4-yl)-1-phenyl-3-(pyridin-2-yl)propan-1-one

2015 ◽  
Vol 71 (1) ◽  
pp. o24-o25
Author(s):  
F. M. Mashood Ahamed ◽  
M. Syed Ali Padusha ◽  
B. Gunasekaran
Keyword(s):  
Crystal Structure ◽  
Carbonyl Group ◽  
Benzene Ring ◽  
Torsion Angle ◽  
Title Compound ◽  
Pyridine Ring ◽  
Chair Conformation ◽  
Equatorial Orientation ◽  
Compound C ◽  
Morpholine Ring

In the title compound C18H20N2O2, the morpholine ring adopts a chair conformation with the exocyclic N—C bond in an equatorial orientation. The N atom of the morpholine ring and the C atom of the carbonyl group are in ananticonformation about the central C—C bond [torsion angle = −162.92 (11)°] and the dihedral angle between the planes of the benzene ring and the pyridine ring is 83.30 (5)°. In the crystal, pairs of very weak C—H...π interactions link the molecules into inversion dimers.

scholarly journals Crystal structure of 1,7,8,9-tetrachloro-4-(3,5-dichlorobenzyl)-10,10-dimethoxy-4-azatricyclo[5.2.1.02,6]dec-8-ene-3,5-dione

2015 ◽  
Vol 71 (1) ◽  
pp. o14-o15
Author(s):  
He Liu ◽  
Jia-liang Zhong ◽  
Wen-xia Sun ◽  
Yan-qing Gong ◽  
Li-hong Liu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Carbonyl Group ◽  
Benzene Ring ◽  
Title Compound ◽  
Crystal Packing ◽  
Carbonyl Groups ◽  
Pyrrolidine Ring ◽  
Dipole Interactions ◽  
Compound C

In the title compound, C17H11Cl6NO4, the configuration of the cycloalkene skeleton isendo,cis. The benzene ring is twisted by 58.94 (8)° from the attached pyrrolidine ring. Two carbonyl groups play a key role in the crystal packing. A short intermolecular C...O distance of 3.017 (3) Å reveals that one carbonyl group is involved in dipole–dipole interactions, which link two adjacent enantiomers into an inversion dimer. Another carbonyl group provides an acceptor for the weak intermolecular C—H...O hydrogen bonds which link these dimers into layers parallel to (011).

scholarly journals Ethyl 2-[(5Z)-5-(4-methoxybenzylidene)-2,4-dioxo-1,3-thiazolidin-3-yl]acetate

IUCrData ◽  
2016 ◽  
Vol 1 (7) ◽  
Author(s):  
Hamza Tachallait ◽  
Khalid Karrouchi ◽  
Khalid Bougrin ◽  
Joel T. Mague ◽  
Youssef Ramli
Keyword(s):  
Hydrogen Bonds ◽  
Carbonyl Group ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Π Interactions ◽  
Compound C

In the title compound, C15H15NO5S, the benzene and heterocyclic rings are close to being coplanar [dihedral angle = 1.49 (6)°]. In the crystal, pairwise C—H...O hydrogen bonds form dimers, which are arranged into `stair-step' rows by way of C=O–π interactions between a carbonyl group and the benzene ring [O...π = 3.3837 (12) Å].

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