scholarly journals Crystal structure of 2-chloro-1-(3-methyl-2,6-diphenylpiperidin-1-yl)ethanone

2015 ◽  
Vol 71 (2) ◽  
pp. o135-o136
Author(s):  
V. Shreevidhyaa Suressh ◽  
K. Prathebha ◽  
S. Abdul Basheer ◽  
S. Ponnuswamy ◽  
G. Usha
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Piperidine Ring ◽  
Boat Conformation ◽  
Π Interactions ◽  
Compound C ◽  
Phenyl Rings ◽  
Twist Boat

In the title compound, C20H22ClNO, the piperidine ring has a twist-boat conformation. There is an intramolecular C—H...π interaction involving the two phenyl rings which are inclined to one another by 84.91 (7)°. In the crystal, molecules are linkedviaC—H...O hydrogen bonds, forming helical chains along [010]. The chains are linked by C—H...π interactions, forming sheets parallel to (100).

scholarly journals Crystal structure of ethyl 2-methyl-5,10-dioxo-4-phenyl-5,10-dihydro-4H-11-thia-1,4a-diazabenzo[b]fluorene-3-carboxylate

2018 ◽  
Vol 74 (2) ◽  
pp. 124-126
Author(s):  
Yegor Yartsev ◽  
Pavel Lyubashov ◽  
Vyacheslav Povstyanoy ◽  
Mykhailo Povstyaniy ◽  
Iryna Lebedyeva
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Chiral Center ◽  
Thiazole Ring ◽  
Boat Conformation ◽  
Space Group ◽  
Π Interactions ◽  
Compound C ◽  
Twist Boat

The title compound, C24H18N2O4S, crystallizes in the orthorhombic P212121 space group, indicating the existence of only one enantiomer with an S configuration of the chiral center in the crystal phase. The dihydropyrimidine ring adopts a twist-boat conformation while the quinone ring is slightly non-planar. In the crystal, molecules are linked by weak C—H...O and C—H...S hydrogen bonds and C—H...π interactions. In addition, a short intermolecular S...N contact of 3.250 (3) Å indicates an interaction between the S atom and the π-system of the thiazole ring.

scholarly journals Crystal structure of (E)-4-(acetoxyimino)-N-allyl-3-isopropyl-2,6-diphenylpiperidine-1-carbothioamide

2015 ◽  
Vol 71 (8) ◽  
pp. o542-o543
Author(s):  
T. Mohandas ◽  
K. Gokula Krishnan ◽  
S. Balamurugan ◽  
William T. A. Harrison ◽  
V. Thanikachalam ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Piperidine Ring ◽  
Side Chain ◽  
Boat Conformation ◽  
Asymmetric Unit ◽  
Compound C ◽  
Phenyl Rings ◽  
Twist Boat

The title compound, C26H31N3O2S, crystallizes with two molecules (AandB) in the asymmetric unit. In each case, the piperidine ring exists in a twist-boat conformation. The dihedral angle between the phenyl rings is 46.16 (12)° in moleculeAand 44.95 (12)° in moleculeB. In both molecules, the allyl side chain is disordered over two orientations in a 0.649 (9):0.351 (9) ratio for moleculeAand 0.826 (10):0.174 (10) ratio for moleculeB. In the crystal, neither molecule forms a hydrogen bond from its N—H group, presumably due to steric hindrance.A+AandB+Binversion dimers are formed, linked by pairs of weak C—H...O hydrogen bonds enclosingR22(22) ring motifs.

scholarly journals 4-Chloro-1-[2-(2-chlorophenyl)ethyl]-2-nitrobenzene

IUCrData ◽  
2016 ◽  
Vol 1 (7) ◽  
Author(s):  
H. S. Yeshwanthkumar ◽  
P. Nagendra ◽  
B. P. Siddaraju ◽  
K. C. Chaluvaraju ◽  
K. Byrappa ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Nitro Group ◽  
Dihedral Angle ◽  
Title Compound ◽  
Π Interactions ◽  
Compound C ◽  
Phenyl Rings

In the title compound, C14H11Cl2NO2, the dihedral angle between the phenyl rings is 8.60 (17)° and the nitro group makes a dihedral anle of 29.4 (4)° with its attached ring. The crystal structure features C—H...O hydrogen bonds and π–π interactions.

scholarly journals r-2,c-6-Bis(4-methoxyphenyl)-c-3,t-3-dimethyl-1-nitrosopiperidin-4-one

2009 ◽  
Vol 65 (6) ◽  
pp. o1420-o1420
Author(s):  
T. Kavitha ◽  
S. Ponnuswamy ◽  
P. Sakthivel ◽  
K. Karthik ◽  
M. N. Ponnuswamy
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Piperidine Ring ◽  
Boat Conformation ◽  
Π Interactions ◽  
Compound C

In the title compound, C21H24N2O4, the piperidine ring adopts a distorted boat conformation. The crystal structure is stabilized by C—H...π interactions involving one of the methoxyphenyl rings.

scholarly journals Crystal structure ofrac-3-hydroxy-2-(p-tolyl)-2,3,3a,4,7,7a-hexahydro-1H-4,7-methanoisoindol-1-one

2015 ◽  
Vol 71 (3) ◽  
pp. o143-o144
Author(s):  
Mehmet Aslantaş ◽  
Cumali Çelik ◽  
Ömer Çelik ◽  
Arzu Karayel
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Boat Conformation ◽  
Π Interactions ◽  
Compound C ◽  
Cyclohexene Ring

In the title compound, C16H17NO2, the cyclohexene ring adopts a boat conformation, and the five-membered rings have envelope conformations with the bridging atom as the flap. Their mean planes are oriented at a dihedral angle of 86.51 (7)°. The molecular structure is stabilized by a short intramolecular C—H...O contact. In the crystal, molecules are linked by O—H...O hydrogen bonds forming chains propagating along [100]. The chains are linked by C—H...π interactions, forming slabs parallel to (001).

scholarly journals Crystal structure of 4-methoxy-N-(piperidine-1-carbonothioyl)benzamide

2017 ◽  
Vol 73 (10) ◽  
pp. 1530-1533
Author(s):  
Khairi Suhud ◽  
Siti Aishah Hasbullah ◽  
Musa Ahmad ◽  
Lee Yook Heng ◽  
Mohammad B. Kassim
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Torsion Angle ◽  
Title Compound ◽  
Three Dimensional ◽  
Chair Conformation ◽  
Dimensional Structure ◽  
Piperidine Ring ◽  
Π Interactions ◽  
Compound C

In the title compound, C14H18N2O2S, the piperidine ring has a chair conformation. Its mean plane is twisted with respect to the 4-methoxybenzoyl ring, with a dihedral angle of 63.0 (3)°. The central N—C(=S)—N(H)—C(=O) bridge is twisted with an N—C—N—C torsion angle of 74.8 (6)°. In the crystal, molecules are linked by N—H...O and C—H...O hydrogen bonds, forming chains along thec-axis direction. Adjacent chains are linked by C—H...π interactions, forming layers parallel to theacplane. The layers are linked by offset π–π interactions [intercentroid distance = 3.927 (3) Å], forming a supramolecular three-dimensional structure.

scholarly journals (4E)-1-Phenyl-4-[(piperidin-1-yl)methylidene]pyrazolidine-3,5-dione

IUCrData ◽  
2016 ◽  
Vol 1 (6) ◽  
Author(s):  
Shaaban K. Mohamed ◽  
Joel T. Mague ◽  
Mehmet Akkurt ◽  
Eman A. Ahmed ◽  
Alaa F. Mohamed ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Chair Conformation ◽  
Piperidine Ring ◽  
Stacking Interactions ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Phenyl Rings

In the title compound, C15H17N3O2, the dihedral angle between the planes of the pyrazolidine and phenyl rings is 29.91 (6)°. The piperidine ring adopts a chair conformation. In the crystal, molecules are linked into chains running parallel to thea-axis direction by a combination of N—H...O and C—H...O hydrogen bonds. Furthermore, there exist C—H...π interactions and π–π stacking interactions [centroid-to-centroid distance = 3.5274 (10) Å] between the pyrazolidine rings of adjacent molecules.

scholarly journals 3-Ethyl-6-(4-fluorophenyl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thiadiazine

2012 ◽  
Vol 68 (6) ◽  
pp. o1860-o1860
Author(s):  
S. Jeyaseelan ◽  
H. C. Devarajegowda ◽  
R. Sathishkumar ◽  
Agnes Sylvia D'souza ◽  
Alphonsus D'souza
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Boat Conformation ◽  
Compound C ◽  
Centroid Distance ◽  
Twist Boat

In the title compound, C12H11FN4S, the thiadiazine ring adopts a twist-boat conformation. The dihedral angle between the triazolothiadiazine system and the benzene ring is 10.54 (9)°. The crystal structure is characterized by C—H...N hydrogen bonds. The crystal packing also exhibits π–π interactions, with a centroid–centroid distance of 3.6348 (15) Å.

scholarly journals Crystal structure of 1,2,3,4-di-O-methylene-α-D-galactopyranose

2015 ◽  
Vol 71 (12) ◽  
pp. o961-o962
Author(s):  
Ioannis Tiritiris ◽  
Stefan Tussetschläger ◽  
Willi Kantlehner
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Sodium Methoxide ◽  
Three Dimensional ◽  
Boat Conformation ◽  
Pyranose Ring ◽  
Compound C ◽  
Dimensional Network ◽  
Twist Boat

The title compound, C8H12O6, was synthesized by deacetylation of 6-acetyl-1,2,3,4-di-O-methylene-α-D-galactose with sodium methoxide. The central part of the molecule consists of a six-membered C5O pyranose ring with a twist-boat conformation. Both fused dioxolane rings adopt an envelope conformation with C and O atoms as the flap. In the crystal, O—H...O and C—H...O hydrogen bonds are present between adjacent molecules, generating a three-dimensional network.

scholarly journals 3-Hydroxy-4-phenyl-2,3,4,5-tetrahydro-1H-1,5-benzodiazepin-2-one:cisisomer

IUCrData ◽  
2016 ◽  
Vol 1 (11) ◽  
Author(s):  
Mohammed Rida ◽  
Youness El Bakri ◽  
Mohamadou Lamine Doumbia ◽  
Mohammed Benchidmi ◽  
El Mokhtar Essassi ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Boat Conformation ◽  
Aromatic Rings ◽  
Three Dimensional Structure ◽  
Π Interactions ◽  
Compound C ◽  
Twist Boat

In the title compound, C15H14N2O2, the seven-membered benzodiazepine ring adopts a twist-boat conformation and the two aromatic rings are inclined to one another by 81.06 (15)°. In the crystal, molecules are linked by N—H...O hydrogen bonds, forming chains propagating along the [10-1] direction. The chains are linked by C—H...O hydrogen bonds, forming sheets parallel to theacplane. Within the sheets, there are N—H...π interactions present, and C—H...π interactions link the sheets to form a three-dimensional structure.

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