scholarly journals 3,5-Dimethyl-2,6-diphenylpiperidine

2014 ◽  
Vol 70 (4) ◽  
pp. o404-o404
Author(s):  
S. Sathya ◽  
K. Prathebha ◽  
G. Usha ◽  
S. Abdul Basheer ◽  
S. Ponnuswamy
Keyword(s):  
Title Compound ◽  
Chair Conformation ◽  
The Other ◽  
Piperidine Ring ◽  
Π Interactions ◽  
Compound C ◽  
Phenyl Rings

In the title compound, C19H23N, the piperidine ring has a chair conformation. The phenyl rings are inclined to one another by 52.76 (16)°. One of the methyl substituents on the piperidine ring is axial while the other is equatorial, like the phenyl rings. In the crystal, molecules are linkedviaC—H...π interactions, forming zigzag chains along [001].

scholarly journals 5′′-(4-Methoxybenzylidene)-1′-(4-methoxyphenyl)-1′′-methyl-1′,2′,3′,5′,6′,7′,8′,8a′-octahydrodispiro[acenaphthylene-1,3′-indolizine-2′,3′′-piperidine]-2,4′′(1H)-dione

2013 ◽  
Vol 69 (2) ◽  
pp. o256-o257 ◽  
Author(s):  
J. Suresh ◽  
R. A. Nagalakshmi ◽  
S. Sivakumar ◽  
R. Ranjith Kumar ◽  
P. L. Nilantha Lakshman
Keyword(s):  
Title Compound ◽  
Chair Conformation ◽  
The Other ◽  
Piperidine Ring ◽  
Pyrrolidine Ring ◽  
Π Interactions ◽  
Compound C ◽  
The Mean ◽  
Puckering Parameters ◽  
Centrosymmetric Dimers

In the title compound, C39H38N2O4, the pyridinone ring adopts a twisted half-chair conformation with the N atom deviating by 0.3304 (1) and with the methylene C atom adjacent to the octahydroindolizine unit deviating by 0.444 (3) Å from the mean plane defined by the other four atoms. In the octahydroindolizine system, the pyrrolidine ring exhibits an envelope conformation, with the fused methyne C atom deviating by 0.6315 (1) Å from the mean plane defined by the other four atoms, and the piperidine ring exhibits a distorted chair conformation, as reflected in the puckering parametersQ= 0.568 (4) Å, θ = 1.5 (4) and ϕ = 161 (16)°. In the crystal pairs of weak C—H...O interactions form centrosymmetric dimers, which are further connected by C—H...π interactions. The crystal studied was a non-merohedral twin, with a domain ratio of 0.91:0.09.

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 Methyl ({[(4E)-1,3-dimethyl-2,6-diphenylpiperidin-4-ylidene]amino}oxy)acetate

2014 ◽  
Vol 70 (5) ◽  
pp. o513-o513
Author(s):  
T. Mohandas ◽  
M. Velayutham Pillai ◽  
T. Vidhyasagar ◽  
A. Pasupathy ◽  
P. Sakthivel
Keyword(s):  
Dihedral Angle ◽  
Title Compound ◽  
Chair Conformation ◽  
Acetate Group ◽  
Piperidine Ring ◽  
Equatorial Orientation ◽  
Π Interactions ◽  
Compound C ◽  
Phenyl Rings

In the title compound, C22H26N2O3, the piperidine ring exhibits a chair conformation. The phenyl rings attached to the piperidine at the 2- and 6-positions have axial orientations. These rings make a dihedral angle of 49.75 (11)°. The aminooxy acetate group attached at the 4-position has an equatorial orientation. In the crystal, inversion dimers linked by pairs of C—H...π interactions occur.

scholarly journals t-3-Benzyl-r-2,c-6-diphenylpiperidin-4-one oxime

IUCrData ◽  
2016 ◽  
Vol 1 (12) ◽  
Author(s):  
R. Arulraj ◽  
S. Sivakumar ◽  
A. Thiruvalluvar ◽  
A. Manimekalai
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Chair Conformation ◽  
Piperidine Ring ◽  
Dihedral Angles ◽  
Oxime Group ◽  
Π Interactions ◽  
Compound C ◽  
Phenyl Rings

In the title compound, C24H24N2O [systematic name: (E)-3-benzyl-2,6-diphenylpiperidin-4-one oxime], the piperidine ring adopts a slightly distorted chair conformation and the phenyl rings and the benzyl group substituents are attached equatorially. The oxime group makes a dihedral angle of 42.88 (12)° with the piperidine ring. The dihedral angle between the phenyl rings is 71.96 (8)°. The benzyl ring makes dihedral angles of 63.01 (8) and 59.35 (8)° with the two phenyl rings. In the crystal, molecules are linked by O—H...N hydrogen bonds, formingC(7) chains along thecaxis. The chains are linked by C—H...π interactions, forming slabs lying parallel to thebcplane.

scholarly journals 1-Methyl-3-(2-methylphenyl)-3a-nitro-1,2,3,3a,4,9b-hexahydrochromeno[4,3-b]pyrrole

2012 ◽  
Vol 68 (6) ◽  
pp. o1735-o1735
Author(s):  
S. Sundaramoorthy ◽  
N. Sivakumar ◽  
M. Bakthadoss ◽  
D. Velmurugan
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Chair Conformation ◽  
The Other ◽  
Asymmetric Unit ◽  
Pyran Ring ◽  
Pyrrolidine Ring ◽  
Π Interactions ◽  
Compound C ◽  
Independent Molecules

The asymmetric unit of the title compound, C19H20N2O3, contains two independent molecules in both of which the pyrrolidine ring adopts an envelope conformation, but with a C atom as the flap in one molecule and the N atom in the other. The pyran ring adopts a half-chair conformation in both molecules. In the crystal, molecules are linked via C—H...O hydrogen bonds and C—H...π interactions.

scholarly journals Crystal structure of 1-[2,4-bis(4-methoxyphenyl)-3-azabicyclo[3.3.1]nonan-3-yl]ethanone

2014 ◽  
Vol 70 (11) ◽  
pp. o1171-o1172 ◽  
Author(s):  
V. Shreevidhyaa Suressh ◽  
S. Sathya ◽  
A. Akila ◽  
S. Ponnuswamy ◽  
G. Usha
Keyword(s):  
Crystal Structure ◽  
Dihedral Angle ◽  
Title Compound ◽  
Chair Conformation ◽  
Cyclohexane Ring ◽  
Piperidine Ring ◽  
Dihedral Angles ◽  
Π Interactions ◽  
Compound C

In the title compound, C24H29NO3, the azabicycle contains two six-membered rings,viz.a cyclohexane ring and a piperidine ring. The first adopts a chair conformation and the second a half-chair conformation. The dihedral angle between their mean planes is 86.21 (13)°, indicating that they are almost perpendicular to one another. The dihedral angle between the planes of the 4-methoxyphenyl rings is 17.51 (13)°, and they make dihedral angles of 81.9 (3) and 81.3 (3)° with the ethan-1-one group. In the crystal, molecules are linked by C—H...π interactions forming chains along [10-1].

scholarly journals (E)-3-Methyl-2,6-diphenylpiperidin-4-oneO-(3-methylbenzoyl)oxime

2014 ◽  
Vol 70 (8) ◽  
pp. o883-o883
Author(s):  
V. Kathiravan ◽  
K. Gokula Krishnan ◽  
T. Mohandas ◽  
V. Thanikachalam ◽  
P. Sakthivel
Keyword(s):  
Dihedral Angle ◽  
Title Compound ◽  
Chair Conformation ◽  
Piperidine Ring ◽  
Equatorial Position ◽  
Compound C ◽  
Phenyl Rings

In the title compound, C26H26N2O2, the piperidine ring exhibits a chair conformation. The phenyl rings are attached to the central heterocycle in an equatorial position. The dihedral angle between the planes of the phenyl rings is 57.58 (8)°. In the crystal, C—H...O interactions connect the molecules into zigzag chains along [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 N-[(1-Benzoylpiperidin-4-yl)methyl]benzamide

2014 ◽  
Vol 70 (7) ◽  
pp. o771-o771 ◽  
Author(s):  
K. Prathebha ◽  
D. Reuben Jonathan ◽  
Sathya Shanmugam ◽  
G. Usha
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Chair Conformation ◽  
Piperidine Ring ◽  
Dihedral Angles ◽  
Supramolecular Network ◽  
Compound C ◽  
Phenyl Rings ◽  
The Mean

In the title compound, C20H22N2O2, the piperidine ring adopts a chair conformation. The phenyl rings are inclined to one another by 80.1 (1)° and make dihedral angles of 46.1 (1) and 40.2 (1)° with the mean plane of the piperidine ring. In the crystal, pairs of N—H...O hydrogen bonds link the molecules into inversion dimers. C—H...O interactions further link the molecules, forming a three-dimensional supramolecular network.

scholarly journals (3E,5E)-3,5-Bis(4-methylbenzylidene)-1-[3-(piperidin-1-yl)propanoyl]piperidin-4-one

2012 ◽  
Vol 68 (8) ◽  
pp. o2493-o2494 ◽  
Author(s):  
Yalda Kia ◽  
Hasnah Osman ◽  
Vikneswaran Murugaiyah ◽  
Suhana Arshad ◽  
Ibrahim Abdul Razak
Keyword(s):  
Title Compound ◽  
Chair Conformation ◽  
Piperidine Ring ◽  
Dihedral Angles ◽  
Maximum Deviation ◽  
Π Interactions ◽  
Compound C ◽  
Benzene Rings ◽  
The Mean ◽  
Graph Set

In the title compound, C29H34N2O2, the central piperidine ring adopts a half-chair conformation, whereas the terminal one adopts a chair conformation. The mean plane of the central piperidine ring [maximum deviation = 0.384 (2) Å] makes dihedral angles of 64.82 (13) and 17.55 (13)° with the benzene rings. In the crystal, molecules are linked into a tape along thebaxisviaC—H...O interactions, generatingR22(20) andR21(6) graph-set motifs. C—H...π interactions are observed between the tapes.

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