scholarly journals Crystal structure of (E)-2,6-di-tert-butyl-4-{[2-(2,4-dinitrophenyl)hydrazinylidene]methyl}phenol

2017 ◽  
Vol 73 (2) ◽  
pp. 96-98 ◽  
Author(s):  
Md. Serajul Haque Faizi ◽  
Necmi Dege ◽  
Ashanul Haque ◽  
Valentina A. Kalibabchuk ◽  
Mustafa Cemberci
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Schiff Base ◽  
Mirror Plane ◽  
Hydrogen Atoms ◽  
Compound C ◽  
Intermolecular Contacts ◽  
Schiff Base Compound ◽  
Ring Motif ◽  
Base Compound

The essential part (including all the non-hydrogen atoms except two methyl carbons) of the molecule of the title compound, C21H26N4O5, lies on a mirror plane, which bisects thet-butyl groups. The conformation of the C=N bond of this Schiff base compound isE, and there is an intramolecular N—H...O hydrogen bond present, forming anS(6) ring motif. In the crystal, molecules are linkedviaO—H...O hydrogen bonds, forming zigzag chains propagating along thea-axis direction. There are no other significant intermolecular contacts present.

scholarly journals Crystal structure of (E)-5-diethylamino-2-({[4-(dimethylamino)phenyl]imino}methyl)phenol

2015 ◽  
Vol 71 (7) ◽  
pp. o503-o503 ◽  
Author(s):  
C. Vidya Rani ◽  
G. Chakkaravarthi ◽  
G. Rajagopal
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Hydrogen Bond ◽  
Schiff Base ◽  
Dihedral Angle ◽  
Aromatic Rings ◽  
Compound C ◽  
Schiff Base Compound ◽  
Ring Motif ◽  
Base Compound

The title Schiff base compound, C19H25N3O, is approximately planar, with a dihedral angle of 9.03 (13)° between the planes of the aromatic rings, and has anEconformation about the N=C bond. The molecular structure is stabilized by an intramolecular O—H...N hydrogen bond, with anS(6) ring motif. In the crystal, molecules are linked by C—H...π interactions, forming sheets parallel to thebcplane.

scholarly journals Crystal structure of (Z)-3-benzyloxy-6-[(2-hydroxy-5-methylanilino)methylidene]cyclohexa-2,4-dien-1-one

2014 ◽  
Vol 70 (9) ◽  
pp. o957-o958 ◽  
Author(s):  
Nadir Ghichi ◽  
Ali Benosmane ◽  
Ali Benboudiaf ◽  
Hocine Merazig
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Schiff Base ◽  
Hydrogen Bonds ◽  
Membered Ring ◽  
Compound C ◽  
Schiff Base Compound ◽  
Ring Motif ◽  
Base Compound

In the title Schiff base compound, C21H19NO3, the conformation about the C=C bond isZ. The N—H group and carbonyl O atom form an intramolecular N—H...O hydrogen bond with anS(6) ring motif. The benzyloxy ring and the 2-hydroxy-5-methylphenyl ring are inclined to the central six-membered ring by 13.68 (9) and 9.13 (8)°, respectively, and to one another by 21.95 (9)°. In the crystal, molecules are linked by O—H...O hydrogen bonds, forming helical chains along [010].

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 2-{(E)-[(4-Anilinophenyl)imino]methyl}-4-[(E)-(4-methoxyphenyl)diazenyl]phenol

IUCrData ◽  
2017 ◽  
Vol 2 (4) ◽  
Author(s):  
Md. Serajul Haque Faizi ◽  
Necmi Dege ◽  
Kateryna Goleva
Keyword(s):  
Hydrogen Bond ◽  
Schiff Base ◽  
Hydrogen Bonds ◽  
Phenyl Ring ◽  
Compound C ◽  
Schiff Base Compound ◽  
Intramolecular Hydrogen ◽  
Phenol Ring ◽  
Ring Motif ◽  
Base Compound

In the title Schiff base compound, C26H22N4O2, 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 and N=N bonds isE. The 4-methoxybenzene ring and thep-phenylenediamine ring are inclined to the phenol ring by 11.61 (17) and 46.04 (17)°, respectively. The terminalN-phenyl ring is inclined to thep-phenylenediamine ring by 50.72 (17)°. In the crystal, adjacent molecules are linked by C—H...O hydrogen bonds, involving thep-phenylenediamine ring and the phenol ring, forming chains along [001]. The chains are linked by a number of C—H...π interactions, forming slabs propagating parallel to (100).

(E)-4-(2-Hydroxy-4-methoxybenzylideneamino)-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one

2007 ◽  
Vol 63 (3) ◽  
pp. o1245-o1246 ◽  
Author(s):  
Liang-Gui Wang ◽  
Chun-Niu Zhang ◽  
Guo-Bing Yan ◽  
Yun-Fa Zheng ◽  
Ming-Hua Yang
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Schiff Base ◽  
Intermolecular Hydrogen Bond ◽  
Dimensional Chain ◽  
One Dimensional ◽  
Compound C ◽  
Schiff Base Compound ◽  
Intramolecular Hydrogen ◽  
Base Compound

In the title Schiff base compound, C16H15N3OS, there are two intramolecular hydrogen bonds and one intermolecular hydrogen bond. The latter results in a one-dimensional chain in the crystal structure.

scholarly journals 4-Bromo-2-[({2-[(2-hydroxyethyl)amino]ethyl}imino)methyl]phenol

IUCrData ◽  
2021 ◽  
Vol 6 (4) ◽  
Author(s):  
Erika Samoľová ◽  
Aliakbar Dehno Khalaji ◽  
Václav Eigner
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Condensation Reaction ◽  
Monoclinic Space Group ◽  
Asymmetric Unit ◽  
Compound C ◽  
Independent Molecules ◽  
Schiff Base Compound ◽  
Ring Motif ◽  
Base Compound

The new title Schiff base compound, C11H15BrN2O2, crystallizes in the monoclinic space group P21 with two independent molecules in the asymmetric unit. It was prepared by the condensation reaction of 5-bromo-2-hydroxybenzaldehyde and aminoethylethanolamine. There is an intramolecular O—H...N hydrogen bond with an S(6) ring motif. Moreover, there are intermolecular C—H...N, C—H...O and Br...O interactions in the crystal structure of the title compound.

scholarly journals 1-[(2-Anilinoethyl)iminiomethyl]-2-naphtholate

2009 ◽  
Vol 65 (6) ◽  
pp. o1400-o1400 ◽  
Author(s):  
Yu-Mei Hao
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Schiff Base ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Methanol Solution ◽  
Compound C ◽  
Schiff Base Compound ◽  
Base Compound

The title Schiff base compound, C19H18N2O, was prepared by the reaction of equimolar quantities of 2-hydroxy-1-naphthaldehyde withN-phenylethane-1,2-diamine in a methanol solution. The molecule adopts a zwitterionic conformation with the naphthyl OH group deprotonated and the imine N atom protonated. An intramolecular N—H...O hydrogen bond forms between them. The dihedral angle between the benzene ring and the naphthyl system is 86.9 (2)°. In the crystal structure, molecules are linked through intermolecular N—H...O hydrogen bonds, forming chains running along thebaxis.

scholarly journals 4-Chloro-2-[(4-chlorobenzylidene)amino]phenol

2012 ◽  
Vol 68 (6) ◽  
pp. o1696-o1696 ◽  
Author(s):  
Kürşat Efil ◽  
Fatih Şen ◽  
Yunus Bekdemir ◽  
Orhan Büyükgüngör
Keyword(s):  
Hydrogen Bond ◽  
Schiff Base ◽  
Double Bond ◽  
Dihedral Angle ◽  
One Dimensional ◽  
Compound C ◽  
Benzene Rings ◽  
Amino Phenol ◽  
Schiff Base Compound ◽  
Base Compound

In the title Schiff base compound, C13H9Cl2NO, the molecule displays an E conformation about the imine C=N double bond, with a dihedral angle of 8.09 (11)° between the two benzene rings. In the crystal, molecules are linked by a single O—H...O hydrogen bond, giving one-dimensional chains which extend along (100).

scholarly journals (E)-2-{[4-(Dimethylamino)benzylidene]amino}-5-nitrophenol

2014 ◽  
Vol 70 (5) ◽  
pp. o598-o599 ◽  
Author(s):  
Yousef Hijji ◽  
Ray J. Butcher ◽  
Jerry P. Jasinski
Keyword(s):  
Hydrogen Bond ◽  
Schiff Base ◽  
Hydrogen Bonds ◽  
Nitro Group ◽  
Asymmetric Unit ◽  
Compound C ◽  
Benzene Rings ◽  
Schiff Base Compound ◽  
Imine Bond ◽  
Base Compound

The title Schiff base compound, C15H15N3O3, crystallizes with two molecules (AandB) in the asymmetric unit. Each molecule adopts anEconformation around the C= N imine bond. The two molecules have minor differences in their conformations. In moleculeA, the dihedral angle between the nitro group and its benzene ring is 2.1 (2)° and that between the two benzene rings is 0.88 (7)°, while the corresponding angles for moleculeBare 5.7 (1) and 2.45 (6)°, respectively. In each molecule, there is an intramolecular O—H...N hydrogen bond. In the crystal, inversion-related molecules are linkedviaO—H...O hydrogen bonds formingA–AandB–Bdimers. These dimers are linkedviaC—H...O hydrogen bonds involving the nitro O atoms, formingA–A–AandB–B–Bslabs that lie parallel to one another and to (010).

scholarly journals 6-[(R)-(2-Hydroxy-1-phenylethyl)aminomethylidene]-4-(2-phenyldiazen-1-yl)cyclohexa-2,4-dien-1-one

IUCrData ◽  
2017 ◽  
Vol 2 (7) ◽  
Author(s):  
Ryoji Moriwaki ◽  
Shiomi Yagi ◽  
Tomoyuki Haraguchi ◽  
Takashiro Akitsu
Keyword(s):  
Hydrogen Bond ◽  
Schiff Base ◽  
Bond Length ◽  
Hydroxy Group ◽  
Tautomeric Form ◽  
Compound C ◽  
Schiff Base Compound ◽  
Characteristic Features ◽  
Azobenzene Derivatives ◽  
Base Compound

The title chiral photochromic Schiff base compound, C21H19N3O2, was synthesized from (R)-(−)-2-phenylglycinol and salicylaldehyde of azobenzene derivative. The molecule exhibits the keto–amine tautomeric form and displays characteristic features of azobenzene derivatives. The diazenyl group adopts a trans (E) conformation, with N=N bond length of 1.260 (2) Å. The hydroxy group is involved in an intermolecular O—H...O hydrogen bond.

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