scholarly journals 3-Acetyl-7-[2-(morpholin-4-yl)ethoxy]chromen-2-one

IUCrData ◽  
2018 ◽  
Vol 3 (9) ◽  
Author(s):  
Junjun Wang ◽  
Yin Zhu ◽  
Haiyan Wang ◽  
Mingdi Yang
Keyword(s):  
Layered Structure ◽  
Title Compound ◽  
Chair Conformation ◽  
Equatorial Orientation ◽  
Stacking Interactions ◽  
Compound C ◽  
Π Stacking ◽  
Morpholine Ring

In the title compound, C17H19NO5, the morpholine ring adopts a chair conformation with the exocyclic N—C bond in an equatorial orientation. In the crystal, the molecules are linked by C—H...O and weak aromatic π–π stacking interactions, thereby generating a layered structure.

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 7-[(5,5-Dimethyl-2-oxido-1,3,2-dioxaphosphinan-2-yl)oxy]-4-methyl-2H-chromen-2-one

2012 ◽  
Vol 68 (6) ◽  
pp. o1924-o1924
Author(s):  
Yan-Ru Zhao ◽  
Xu-Feng Hou ◽  
Zhi-Hong Xu
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Chair Conformation ◽  
Ring System ◽  
Stacking Interactions ◽  
Asymmetric Unit ◽  
Compound C ◽  
Π Stacking

The title compound, C15H17O6P, was obtained from a reaction of 4-methyl-7-hydroxycoumarin and 2-chloro-5,5-dimethyl-1,3,2-dioxaphosphinane 2-oxide. There are two molecules in the asymmetric unit in which the benzopyran ring system is almost planar [r.m.s. deviation for each molecule = 0.003 Å]. In the crystal, C—H...O hydrogen bonds and π–π stacking interactions [with centroid–centroid distances of 3.743 (3) and 3.727 (3) Å] link the two molecules. The dioxaphosphorinane ring adopts a chair conformation in both asymmetric molecules.

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 4-(4-Nitrophenyl)morpholine

2012 ◽  
Vol 68 (4) ◽  
pp. o1235-o1235 ◽  
Author(s):  
Li-Jiao Wang ◽  
Wei-Wei Li ◽  
Sheng-Yong Yang ◽  
Li Yang
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Stacking Interactions ◽  
Compound C ◽  
Π Stacking ◽  
Perpendicular Distance ◽  
Morpholine Ring

Aromatic π–π stacking interactions stabilize the crystal structure of the title compound, C10H12N2O3, the perpendicular distance between parallel planes being 3.7721 (8) Å. The morpholine ring adopts a chair comformation.

scholarly journals 1,2,3,5-Tetrahydronaphtho[2,1-c]oxepine

IUCrData ◽  
2020 ◽  
Vol 5 (3) ◽  
Author(s):  
Alan J. Lough ◽  
Austin Pounder ◽  
Christopher Wicks ◽  
William Tam
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Chair Conformation ◽  
Membered Ring ◽  
Stacking Interactions ◽  
Naphthalene Ring ◽  
Compound C ◽  
Π Stacking ◽  
Centroid Distance ◽  
Ring Centroid

In the title compound, C14H14O, the seven-membered ring is in a pseudo-chair conformation. In the crystal, molecules are linked by weak C—H...O hydrogen bonds forming layers parallel to (010). In addition, there are weak π–π stacking interactions between inversion-related naphthalene ring systems, with a ring centroid–ring centroid distance of 3.518 (5) Å.

scholarly journals Crystal structure of 2-bromo-1,4-dihydroxy-9,10-anthraquinone

2014 ◽  
Vol 70 (10) ◽  
pp. o1130-o1130 ◽  
Author(s):  
Wataru Furukawa ◽  
Munenori Takehara ◽  
Yoshinori Inoue ◽  
Chitoshi Kitamura
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Stacking Interactions ◽  
Compound C ◽  
Π Stacking ◽  
Dimensional Network

In an attempt to brominate 1,4-dipropoxy-9,10-anthraquinone, a mixture of products, including the title compound, C14H7BrO4, was obtained. The molecule is essentially planar (r.m.s. deviation = 0.029 Å) and two intramolecular O—H...O hydrogen bonds occur. In the crystal, the molecules are linked by weak C—H...O hydrogen bonds, Br...O contacts [3.240 (5) Å], and π–π stacking interactions [shortest centroid–centroid separation = 3.562 (4) Å], generating a three-dimensional network.

3-n-Butyl-2-methoxy-1-benzothieno[3,2-d]pyrimidin-4(3H)-one

2006 ◽  
Vol 62 (4) ◽  
pp. o1319-o1320 ◽  
Author(s):  
Min-Hui Cao ◽  
Sheng-Zhen Xu ◽  
Yang-Gen Hu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Benzene Ring ◽  
Title Compound ◽  
Thiophene Ring ◽  
Stacking Interactions ◽  
Asymmetric Unit ◽  
Compound C ◽  
Π Stacking ◽  
Independent Molecules

The title compound, C15H16N2O2S, contains a five-membered thiophene ring fused to a benzene ring and a substituted pyrimidinone ring. All three rings in each of the independent molecules of the asymmetric unit lie in approximately the same plane. The crystal structure is stabilized by intermolecular C—H...O hydrogen bonding and π–π stacking interactions.

scholarly journals Crystal structure ofN-[(naphthalen-1-yl)carbamothioyl]cyclohexanecarboxamide

2015 ◽  
Vol 71 (7) ◽  
pp. o508-o509 ◽  
Author(s):  
G. Vimala ◽  
J. Haribabu ◽  
S. Aishwarya ◽  
R. Karvembu ◽  
A. SubbiahPandi
Keyword(s):  
Crystal Structure ◽  
Minor Component ◽  
Chair Conformation ◽  
Ring System ◽  
Dihedral Angles ◽  
Equatorial Orientation ◽  
Stacking Interactions ◽  
Compound C ◽  
Naphthyl Ring ◽  
Whole Molecule Disorder

The title compound, C18H20N2OS, displays whole-molecule disorder over two adjacent sets of sites with an occupancy ratio of 0.630 (11):0.370 (11). In each disorder component, the cyclohexyl ring shows a chair conformation with the exocyclic C—C bond in an equatorial orientation. The dihedral angles between the cyclohexyl ring (all atoms) and the naphthyl ring system are 36.9 (6) for the major component and 20.7 (12)° for the minor component. Each component features an intramolecular N—H...O hydrogen bond, which closes anS(5) ring. In the crystal, inversion dimers linked by pairs of N—H...S hydrogen bonds generateR22(8) loops for both components. Aromatic π–π stacking interactions [shortest centroid–centroid separation = 3.593 (9) Å] and a C—H...π interaction are also observed.

scholarly journals 4-Chloro-5-(morpholin-4-yl)-2-[(5-phenyl-1,3,4-oxadiazol-2-yl)methyl]pyridazin-3(2H)-one

IUCrData ◽  
2017 ◽  
Vol 2 (3) ◽  
Author(s):  
Yanwen Sun ◽  
Haolei Wu ◽  
Changheng Wei ◽  
Mei Gao ◽  
Zeyi Shen ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Chair Conformation ◽  
Dihedral Angles ◽  
Bond Forming ◽  
Compound C ◽  
Pyridazine Ring ◽  
Morpholine Ring

In the title compound, C17H16ClN5O3, the phenyl and the oxadiazole rings are almost coplanar, subtending a dihedral angle of 4.34 (19)°. These rings lie almost normal to the pyridazine ring, making dihedral angles of 87.35 (16) and 89.06 (15)°, respectively. The morpholine ring has the usual chair conformation and its mean plane is inclined to the pyridazine ring by 39.45 (17)°. There is a short intramolecular C—H...Cl contact present. In the crystal, molecules are linked by bifurcated C—(H,H)...O hydrogen bonds and a C—H...N hydrogen bond, forming layers parallel to the ab plane.

scholarly journals 1-[3-(Morpholin-4-yl)propyl]-4-(3-nitrophenyl)spiro[azetidine-3,9′-xanthen]-2-one

2014 ◽  
Vol 70 (3) ◽  
pp. o369-o370 ◽  
Author(s):  
Ísmail Çelik ◽  
Mehmet Akkurt ◽  
Aliasghar Jarrahpour ◽  
Roghayeh Heiran ◽  
Namık Özdemir
Keyword(s):  
Hydrogen Bond ◽  
Least Squares ◽  
Benzene Ring ◽  
Title Compound ◽  
Chair Conformation ◽  
Ring System ◽  
Dihedral Angles ◽  
Maximum Deviation ◽  
Compound C ◽  
Morpholine Ring

The β-lactam (azetidin-2-one) ring of the title compound, C28H27N3O5, is nearly planar [maximum deviation = 0.010 (1) Å] and makes dihedral angles of 75.77 (5), 52.78 (9) and 88.72 (5)°, respectively, with the benzene ring, the least-squares plane formed by the four C atoms of the morpholine ring, which adopts a chair conformation, and the xanthene ring system. In the crystal, C—H...O hydrogen-bond contacts connect neighbouring molecules into infinite zigzag chains running parallel to thebaxis.

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