10-(4-Hydroxy-3-methoxy-5-nitrobenzylidene)anthrone

2007 ◽  
Vol 63 (11) ◽  
pp. o4498-o4498
Author(s):  
Wei Zhou ◽  
Zhimin Wu ◽  
Weixiao Hu ◽  
Chunnian Xia
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Dihedral Angle ◽  
Hydroxy Group ◽  
Title Compound ◽  
Membered Ring ◽  
Boat Conformation ◽  
Compound C ◽  
Benzene Rings ◽  
Intramolecular Hydrogen

In the title compound, C22H15NO5, prepared from anthrone and 4-hydroxy-3-methoxy-5-nitrobenzaldehyde, the anthracene fragment is non-planar. The central six-membered ring assumes an asymmetric boat conformation, while the two outer benzene rings make a dihedral angle of 28.08 (10)°. The hydroxy group is involved in an intramolecular hydrogen bond. In the crystal structure, a weak intermolecular C—H...O hydrogen bond links the molecules into ribbons along the c axis.

scholarly journals [1-(2,5-Dichloroanilino)-5-methyl-1H-1,2,3-triazol-4-yl]methanol

IUCrData ◽  
2016 ◽  
Vol 1 (1) ◽  
Author(s):  
Anna C. Cunha ◽  
Alessandro K. Jordão ◽  
Maria C. B. V. de Souza ◽  
Vitor F. Ferreira ◽  
Maria C. B. de Almeida ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Hydroxy Group ◽  
Title Compound ◽  
Membered Ring ◽  
Compound C ◽  
Centroid Distance ◽  
Benzene Rings

In the title compound, C10H10Cl2N4O, the hydroxy group and benzene ring are disposed to opposite sides of the central 1,2,3-triazolyl ring. The dihedral angle between the five- and six-membered rings is 87.51 (12)°, and the C—O bond of the hydroxy group lies almost normal to the plane of the 5-membered ring [N—C—C—O = −93.2 (2)°]. An intramolecular amino-N—H...Cl hydrogen bond is noted. In the extended structure, supramolecular layers in theabplane are formedviahydroxy-O—H...N(ring) and amine-N—H...O(hydroxy) hydrogen bonds. The layers are connected along thecaxis by π–π contacts between benzene rings [inter-centroid distance = 3.7789 (13) Å] and by C—Cl...π interactions.

scholarly journals (E)-4-Bromo-2-[(2,6-diisopropylphenyl)iminomethyl]phenol

2012 ◽  
Vol 68 (6) ◽  
pp. o1782-o1782
Author(s):  
P. Balamurugan ◽  
K. Kanmani Raja ◽  
S. Kutti Rani ◽  
G. Chakkaravarthi ◽  
G. Rajagopal
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Dihedral Angle ◽  
Title Compound ◽  
Methyl Group ◽  
Compound C ◽  
Benzene Rings ◽  
Graph Set

In the title compound, C19H22BrNO, the dihedral angle between the benzene rings is 76.17 (14)° and an intramolecular O—H...N hydrogen bond with an S(6) graph-set motif is present. One methyl group is disordered over two sets of sites with site occupancies of 0.66 (3) and 0.34 (3). A weak intermolecular C—H...π interaction is observed in the crystal structure.

2,4,4-Trimethyl-N-phenyl-2,3,4,5-tetrahydro-1H-1,5-benzodiazepine-1-carboxamide

2007 ◽  
Vol 63 (11) ◽  
pp. o4264-o4264 ◽  
Author(s):  
A Thiruvalluvar ◽  
S Ponnuswamy
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Boat Conformation ◽  
Equatorial Orientation ◽  
Methyl Group ◽  
Compound C ◽  
Benzene Rings

In the title compound, C19H23N3O, the seven-membered diazepine ring adopts a boat conformation. The phenylcarbamoyl group is coplanar with the N atom and its two attached C atoms. The methyl group at position 2 has an equatorial orientation. The dihedral angle between the two benzene rings is 81.07 (9)°. The crystal structure is stabilized by intramolecular C—H...O and intermolecular N—H...O hydrogen bonds.

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

2015 ◽  
Vol 71 (2) ◽  
pp. o122-o122
Author(s):  
V. Shreevidhyaa Suressh ◽  
B. K. Revathi ◽  
S. Abdul Basheer ◽  
S. Ponnuswamy ◽  
G. Usha
Keyword(s):  
Crystal Structure ◽  
Dihedral Angle ◽  
Title Compound ◽  
Piperidine Ring ◽  
Boat Conformation ◽  
Compound C ◽  
Benzene Rings ◽  
Twisted Boat

In the racemic title compound, C21H24ClNO, the dihedral angle between the planes of the benzene rings is 86.52 (14)° and those between the benzene rings and the piperidine ring are 61.66 (14) and 86.39 (14)°. The piperidine ring adopts a twisted boat conformation. No directional interactions could be detected in the crystal.

scholarly journals Crystal structure of (Z)-3-[5-chloro-2-(prop-2-ynyloxy)phenyl]-3-hydroxy-1-[4-(trifluoromethyl)phenyl]prop-2-en-1-one

2015 ◽  
Vol 71 (8) ◽  
pp. o556-o557
Author(s):  
Aarti Dalal ◽  
Ramesh C. Kamboj ◽  
Dinesh Kumar ◽  
Mahendra Kumar Sharma ◽  
Nagendran Selvarajan
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Double Bond ◽  
Dihedral Angle ◽  
Title Compound ◽  
Photochemical Transformation ◽  
Stacking Interactions ◽  
Compound C ◽  
Π Stacking ◽  
Benzene Rings

The title compound, C19H12ClF3O3, obtained by the photochemical transformation of 2-[5-chloro-2-(prop-2-ynyloxy)benzoyl]-3-[4-(trifluoromethyl)phenyl]oxirane adopts aZconformation with respect to the enolic C=C double bond. The dihedral angle between the benzene rings is 12.25 (16)° and an intramolecular O—H...O hydrogen bond closes anS(6) ring. An intramolecular C—H...O interaction also leads to anS(6) ring. In the crystal, very weak C—H...O interactions and short Cl...Cl contacts [3.3221 (16) Å] are seen, as well as weak aromatic π–π stacking interactions [centroid–centroid separation = 3.879 (2) Å].

scholarly journals Crystal structure of (E)-4-methoxy-2-{[(5-methylpyridin-2-yl)imino]methyl}phenol

2015 ◽  
Vol 71 (11) ◽  
pp. o819-o819 ◽  
Author(s):  
Farook Adam ◽  
Md Azharul Arafath ◽  
Rosenani Anwaeul Haque ◽  
Mohd Rizal Razali
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Schiff Base ◽  
Double Bond ◽  
Dihedral Angle ◽  
Compound C ◽  
Benzene Rings ◽  
Schiff Base Compound ◽  
Intramolecular Hydrogen ◽  
Base Compound

The molecule of the title Schiff base compound, C14H14N2O2, displays anEconformation with respect the imine C=N double bond. The molecule is approximately planar, with the dihedral angle formed by the planes of the pyridine and benzene rings being 5.72 (6)°. There is an intramolecular hydrogen bond involving the phenolic H and imine N atoms.

scholarly journals Crystal structure of (E)-4-ethyl-2-(4-methoxybenzylidene)-3,4-dihydronaphthalen-1(2H)-one

2015 ◽  
Vol 71 (6) ◽  
pp. o432-o432
Author(s):  
Mohamed Akhazzane ◽  
Ghali Al Houari ◽  
Mohamed El Yazidi ◽  
Mohamed Saadi ◽  
Lahcen El Ammari
Keyword(s):  
Crystal Structure ◽  
Double Bond ◽  
Dihedral Angle ◽  
Title Compound ◽  
The Other ◽  
Axial Orientation ◽  
Boat Conformation ◽  
Compound C ◽  
Benzene Rings ◽  
Van Der Waals Contacts

In the title compound, C20H20O2, the exocyclic C=C double bond has anEconformation. The ethyl substituent on the cyclohexanone ring is in an axial orientation. The cyclohexanone ring adopts a screw-boat conformation, with the methylene C atom and the C atom bearing the 4-methoxybenzylidene group displaced from the other atoms by 0.812 (1) and 0.334 (1) Å, respectively. The dihedral angle between the planes of the benzene rings is 42.20 (8)°. In the crystal, no directional interactions beyond van der Waals contacts are observed.

scholarly journals Crystal structure of 5,11-dihydropyrido[2,3-b][1,4]benzodiazepin-6-one

2015 ◽  
Vol 71 (5) ◽  
pp. o304-o305 ◽  
Author(s):  
Noura M. Riad ◽  
Darius P. Zlotos ◽  
Ulrike Holzgrabe
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Receptor Antagonist ◽  
Dihedral Angle ◽  
Title Compound ◽  
Membered Ring ◽  
Boat Conformation ◽  
Aromatic Rings ◽  
Compound C

The title compound, C12H9N3O, is an intermediate in the synthesis of the muscarinic M2 receptor antagonist AFDX-384. The seven-membered ring adopts a boat conformation and the dihedral angle between the planes of the aromatic rings is 41.51 (9)°. In the crystal, molecules are linked into [001] chains of alternating inversion dimers formed by pairs of N—H...O hydrogen bonds and pairs of N—H...N hydrogen bonds. In both cases,R22(8) loops are generated.

scholarly journals Crystal structure of (E)-9-({[4-(diethylamino)phenyl]imino}methyl)-2,3,6,7-tetrahydro-1H,5H-pyrido[3,2,1-ij]quinolin-8-ol

2017 ◽  
Vol 73 (1) ◽  
pp. 38-40 ◽  
Author(s):  
Md. Serajul Haque Faizi ◽  
Musheer Ahmad ◽  
Anatoly A. Kapshuk ◽  
Irina A. Golenya
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Title Compound ◽  
Condensation Reaction ◽  
The Other ◽  
Boat Conformation ◽  
Aromatic Rings ◽  
Compound C ◽  
Intramolecular Hydrogen ◽  
Ring Motif

The title compound, C23H29N3O, was synthesized from the condensation reaction of 8-hydroxyjulolidine-9-carbaldehyde andN,N-diethyl-p-phenylenediamine. The hydroxy group forms a intramolecular hydrogen bond to the imine N atom and generates anS(6) ring motif. The conformation about the C=N bond isE, and the aromatic ring of the julolidine moiety is inclined to the benzene ring by 3.74 (14)°. One of the fused non-aromatic rings of the julolidine moiety adopts an envelope conformation and the other has a screw-boat conformation. In the crystal, molecules are linked by C—H...π interactions involving the aromatic julolidine ring, forming slabs parallel to thebcplane. The tricyclic fragment of the julolidine ring and the azomethine C=N bond are disordered over two sets of sites with a refined occupancy ratio of 0.773 (3):0.227 (3).

scholarly journals (Z)-2-Benzylidene-3-n-butoxy-2H-1,4-benzothiazine

IUCrData ◽  
2017 ◽  
Vol 2 (6) ◽  
Author(s):  
Nada Kheira Sebbar ◽  
Mohamed Ellouz ◽  
Younes Ouzidan ◽  
Manpreet Kaur ◽  
El Mokhtar Essassi ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Dihedral Angle ◽  
Title Compound ◽  
Boat Conformation ◽  
Stacking Interactions ◽  
Compound C ◽  
Π Stacking ◽  
Centroid Distance ◽  
Benzene Rings ◽  
Ring Motif

In the title compound, C19H19NOS, the thiazin-3-one ring of the 1,4-thiazin-3-one moiety adopts a screw-boat conformation. The dihedral angle between the benzene rings is 31.0 (5)°. An intramolecular C—H...S hydrogen bond forms anS(6) ring motif. In the crystal, C—H...π(ring) contacts form inversion dimers and weak π–π stacking interactions, with a centroid-to-centroid distance of 3.8766 (2) Å, also occur.

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