scholarly journals Crystal structure of (7-methyl-2-oxo-2H-chromen-4-yl)methyl piperidine-1-carbodithioate

2015 ◽  
Vol 71 (8) ◽  
pp. o606-o607
Author(s):  
K. R. Roopashree ◽  
T. G. Meenakshi ◽  
K. Mahesh Kumar ◽  
O. Kotresh ◽  
H. C. Devarajegowda
Keyword(s):  
Crystal Structure ◽  
Chair Conformation ◽  
Ring System ◽  
Piperidine Ring ◽  
Dihedral Angles ◽  
Maximum Deviation ◽  
Compound C ◽  
Centroid Distance ◽  
The Mean ◽  
Chromene Ring

In the title compound, C17H19NO2S2, the 2H-chromene ring system is nearly planar, with a maximum deviation of 0.0383 (28) Å, and the piperidine ring adopts a chair conformation. The 2H-chromene ring makes dihedral angles of 32.89 (16) and 67.33 (8)°, respectively, with the mean planes of the piperidine ring and the carbodithioate group. In the crystal, C—H...O and weak C—H...S hydrogen bonds link the molecules into chains along [001]. The crystal structure also features C—H...π and π–π interactions, with a centroid–centroid distance of 3.7097 (17) Å.

scholarly journals Crystal structure of dimethyl 1-oxo-2,4-diphenyl-1,2-dihydronaphthalene-2,3-dicarboxylate

2018 ◽  
Vol 74 (3) ◽  
pp. 349-351
Author(s):  
Gajendran Jagadeesan ◽  
Immanuel Monica Chandramalar ◽  
Jayachandran Karunakaran ◽  
Solaiappan Gopinath ◽  
Arasambattu K. Mohanakrishnan
Keyword(s):  
Crystal Structure ◽  
Chair Conformation ◽  
Ring System ◽  
The Other ◽  
Dihedral Angles ◽  
Compound C ◽  
Centroid Distance ◽  
Phenyl Rings ◽  
The Mean ◽  
Ring Motif

In the title compound, C26H20O5, a 1,2-dihydronaphthalene derivative, the cyclohexa-1,3-diene ring of the 1,2-dihydronaphthalene ring system adopts a half-chair conformation. The mean plane of the 1,2-dihydronapthalene ring system makes dihedral angles of 86.23 (6) and 64.80 (7)° with two phenyl rings. The carbonyl O atom attached to the dihydronaphthalene ring system deviates from the mean plane of the 1,2-dihydronaphthalene ring system by 0.618 (1) Å. In the crystal, the molecules are linked into layers parallel to thebcplaneviatwo kinds of C—H...O interactions, one of which forms aC(10) chain motif running along thec-axis direction and the other forms anR22(6) ring motif. Adjacent layers are further connected by C—H...π and offset π–π interactions [centroid–centroid distance = 3.6318 (9) Å].

scholarly journals Crystal structure of (6-bromo-2-oxo-2H-chromen-4-yl)methyl morpholine-4-carbodithioate

2015 ◽  
Vol 71 (7) ◽  
pp. o489-o490
Author(s):  
K. Mahesh Kumar ◽  
K. R. Roopashree ◽  
M. Vinduvahini ◽  
O. Kotresh ◽  
H. C. Devarajegowda
Keyword(s):  
Crystal Structure ◽  
Crystal Packing ◽  
Chair Conformation ◽  
Ring System ◽  
Maximum Deviation ◽  
Compound C ◽  
Centroid Distance ◽  
Benzene Rings ◽  
Morpholine Ring ◽  
Chromene Ring

In the title compound, C15H14BrNO3S2, the 2H-chromene ring system is nearly planar, with a maximum deviation of 0.034 (2) Å, and the morpholine ring adopts a chair conformation. The dihedral angle between best plane through the 2H-chromene ring system and the morpholine ring is 86.32 (9)°. Intramolecular C—H...S hydrogen bonds are observed. In the crystal, inversion-related C—H...S and C—H...O interactions generateR22(10) andR22(8) rings patterns, respectively. In addition, the crystal packing features π–π interactions between fused benzene rings [centroid–centroid distance = 3.7558 (12) Å].

scholarly journals (6-Methoxy-2-oxo-2H-chromen-4-yl)methyl piperidine-1-carbodithioate

2013 ◽  
Vol 69 (11) ◽  
pp. o1683-o1683 ◽  
Author(s):  
K. Mahesh Kumar ◽  
M. Vinduvahini ◽  
N. M. Mahabhaleshwaraiah ◽  
O. Kotresh ◽  
H. C. Devarajegowda
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Chair Conformation ◽  
Ring System ◽  
Piperidine Ring ◽  
Maximum Deviation ◽  
Compound C ◽  
Centroid Distance ◽  
Chromene Ring

In the title compound, C17H19NO3S2, the maximum deviation of atoms in the 2H-chromene ring system is 0.0097 (14) Å and the piperidine ring adopts a chair conformation. The dihedral angle between the 2H-chromene ring and the piperidine ring (all atoms) is 87.59 (8)°. In the crystal, inversion dimers linked by pairs of C—H...O interactions generateR22(22) loops. Further C—H...O hydrogen bonds link the dimers into [110] chains and weak aromatic π–π stacking [shortest centroid–centroid distance = 3.824 (8) Å] is also observed.

scholarly journals (6-Methoxy-2-oxo-2H-chromen-4-yl)methyl morpholine-4-carbodithioate

2013 ◽  
Vol 69 (2) ◽  
pp. o192-o192 ◽  
Author(s):  
H. C. Devarajegowda ◽  
K. Mahesh Kumar ◽  
S. Seenivasa ◽  
H. K. Arunkashi ◽  
O. Kotresh
Keyword(s):  
Hydrogen Bond ◽  
Bond Angle ◽  
Chair Conformation ◽  
Ring System ◽  
Maximum Deviation ◽  
Compound C ◽  
Centroid Distance ◽  
Benzene Rings ◽  
Morpholine Ring ◽  
Chromene Ring

In the title compound, C16H17NO4S2, the 2H-chromene ring system is nearly planar, with a maximum deviation of 0.070 (1) Å, and the morpholine ring adopts a chair conformation; the bond-angle sum for its N atom is 357.9°. The dihedral angle between the the 2H-chromene ring and the best plane through the morpholine ring is 89.09 (6)°. An intramolecular C—H...S hydrogen bond occurs. In the crystal, C—H...O hydrogen bonds generateR22(8) rings and π–π interactions occur between fused benzene rings of the chromene system [shortest centroid–centroid distance = 3.5487 (8) Å].

scholarly journals (5,7-Dimethyl-2-oxo-2H-chromen-4-yl)methyl pyrrolidine-1-carbodithioate

2012 ◽  
Vol 68 (6) ◽  
pp. o1584-o1584
Author(s):  
N. M. Mahabaleshwaraiah ◽  
K. Mahesh Kumar ◽  
O. Kotresh ◽  
Waleed Fadl Ali Al-eryani ◽  
H. C. Devarajegowda
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Ring System ◽  
Maximum Deviation ◽  
Pyrrolidine Ring ◽  
Compound C ◽  
Centroid Distance ◽  
Planar Part ◽  
Chromene Ring

In the title compound, C17H19NO2S2, the 2H-chromene ring system is almost planar, with a maximum deviation of 0.044 (2) Å, and the pyrrolidine ring adopts an envelope conformation. The dihedral angle between the 2H-chromene system and the planar part of the pyrrolidine ring is 83.65 (8)°. A weak intramolecular C—H...S hydrogen bond occurs. The crystal structure features C—H...O hydrogen bonds and π–π interactions, with a centroid–centroid distance of 3.5728 (16) Å.

scholarly journals Crystal structure oftrans-1-{2-[4-(dimethylamino)phenyl]ethyl}-4-[2-(pyren-1-yl)ethyl]cyclohexane

2015 ◽  
Vol 71 (8) ◽  
pp. o629-o630
Author(s):  
Sreevidya Thekku Veedu ◽  
Simone Techert
Keyword(s):  
Crystal Structure ◽  
Benzene Ring ◽  
Title Compound ◽  
Chair Conformation ◽  
Ring System ◽  
Maximum Deviation ◽  
Π Interactions ◽  
Twin Domain ◽  
Compound C ◽  
The Mean

The title compound, C34H37N, is a pyrene derivative in which the pyrene ring system is linked to an ethylcyclohexane unit which, in turn, carries a [4-(dimethylamino)phenyl]ethyl substituent in theparaposition. The central cyclohexane ring has a chair conformation, with the exocyclic C—C bonds in equatorial orientations. The benzene ring is inclined to the mean plane of the pyrene ring system [maximum deviation = 0.038 (4) Å] by 14.84 (15)°. In the crystal, molecules are linked by C—H...π interactions, forming chains propagating along [010]. The crystal was refined as a non-merohedral twin [domain ratio = 0.9989 (4):0.0011 (4)].

scholarly journals 1-[3-(Morpholin-4-yl)propyl]-3-[(naphthalen-2-yl)oxy]-4-(3-nitrophenyl)azetidin-2-one

2014 ◽  
Vol 70 (8) ◽  
pp. o833-o834
Author(s):  
Zeliha Atioğlu ◽  
Mehmet Akkurt ◽  
Aliasghar Jarrahpour ◽  
Roghayeh Heiran ◽  
Namık Özdemir
Keyword(s):  
Hydrogen Bonds ◽  
Chair Conformation ◽  
Ring System ◽  
Dihedral Angles ◽  
Maximum Deviation ◽  
Naphthalene Ring ◽  
Compound C ◽  
Lactam Ring ◽  
The Mean ◽  
Morpholine Ring

In the title compound, C26H27N3O5, the β-lactam (azetidin-2-one) ring is nearly planar [maximum deviation = 0.011 (3) Å]. The mean plane formed by the four C atoms of the morpholine ring, which adopts a chair conformation, the benzene ring and the naphthalene ring system form dihedral angles of 72.85 (17), 87.46 (15) and 65.96 (11)°, respectively, with the β-lactam ring. In the crystal, molecules are linkedviaC—H...O hydrogen bonds, forming inversion dimers withR22(8).

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.

scholarly journals Crystal structure of (7-fluoro-2-oxo-2H-chromen-4-yl)methyl morpholine-4-carbodithioate

2015 ◽  
Vol 71 (12) ◽  
pp. o928-o929
Author(s):  
B. R. Anitha ◽  
A. Thomas Gunaseelan ◽  
M. Vinduvahini ◽  
H. D. Kavitha ◽  
H. C. Devarajegowda
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Chair Conformation ◽  
Ring System ◽  
Stacking Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Morpholine Ring ◽  
Chromene Ring

In the title compound, C15H14FNO3S2, the 2H-chromene ring system is close to being planar (r.m.s. deviation = 0.024 Å) and the morpholine ring adopts a chair conformation. The dihedral angle between the 2H-chromene ring system and the morpholine ring (all atoms) is 88.21 (11)°. In the crystal, inversion dimers linked by pairs of very weak C—H...F hydrogen bonds generateR22(8) loops; C—H...O hydrogen bonds connect the dimers into [010] chains. Weak aromatic π–π stacking interactions between the pyran rings of the chromene systems [centroid–centroid distance = 3.6940 (16) Å] are also observed.

scholarly journals 2-Amino-6-(piperidin-1-yl)-4-p-tolylpyridine-3,5-dicarbonitrile

2013 ◽  
Vol 69 (12) ◽  
pp. o1807-o1807
Author(s):  
S. Antony Inglebert ◽  
Jayabal Kamalraja ◽  
K. Sethusankar ◽  
Gnanasambandam Vasuki
Keyword(s):  
Hydrogen Bonds ◽  
Pyridine Ring ◽  
Chair Conformation ◽  
Piperidine Ring ◽  
Dihedral Angles ◽  
Maximum Deviation ◽  
Two Dimensional ◽  
Compound C ◽  
Benzene Rings ◽  
The Mean

In the title compound, C19H19N5, the piperidine ring adopts a chair conformation. The pyridine ring is essentially planar, with a maximum deviation of 0.039 (2) Å for a C atom substituted with a carbonitrile group. The mean plane of the central pyridine ring makes the dihedral angles of 37.90 (14) and 56.10 (12)° with the piperidine and benzene rings, respectively. In the crystal, molecules are linkedviaN—H...N and C—H...N hydrogen bonds, forming chains along [101], and enclosingR22(17) ring motifs. The chains are linked by further C—H...N hydrogen bonds, forming two-dimensional networks lying parallel to (10-1), and enclosing inversion dimers withR22(20) ring motifs.

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