scholarly journals 1-(4-Methoxyphenylsulfonyl)-5-methyl-5-phenylimidazolidine-2,4-dione

2009 ◽  
Vol 65 (6) ◽  
pp. o1207-o1208 ◽  
Author(s):  
Abid Hussain ◽  
Shahid Hameed ◽  
Helen Stoeckli-Evans
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Phenyl Group ◽  
Monoclinic Space Group ◽  
Asymmetric Unit ◽  
Space Group ◽  
Compound C ◽  
Centrosymmetric Dimers

The title compound, C17H16N2O5S, crystallized in the chiral monoclinic space groupP21, with two enantiomeric molecules (AandB) in the asymmetric unit. It is composed of a methylimidazolidine-2,4-dione unit substituted with a phenyl group and a 4-methoxyphenylsulfonyl group. The benzene ring mean planes are inclined to one another by 22.20 (14)° in moleculeAand by 15.82 (13)° in moleculeB. In the crystal structure, theAandBmolecules are linked by N—H...O hydrogen bonds, forming centrosymmetric dimers. A number of C—H...O interactions are also present in the crystal structure, leading to the formation of a three-dimensinoal network.

scholarly journals 4-Chloro-N-methylbenzamide

2012 ◽  
Vol 68 (4) ◽  
pp. o937-o937
Author(s):  
Juan Yuan ◽  
Yan-Ju Liu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Amide Group ◽  
Dihedral Angles ◽  
Asymmetric Unit ◽  
Compound C ◽  
Independent Molecules

There are two molecules in the asymmetric unit of the title compound, C8H8ClNO, which are linked in the crystal structureviaN—H...O hydrogen bonds into chains along thebaxis. C—H...O contacts also occur. The benzene ring makes dihedral angles of 5.9 (1) and 16.7 (1)°with the attached amide group in the two independent molecules.

scholarly journals Crystal structure of (E)-2-{[(4-anilinophenyl)imino]methyl}phenol

2015 ◽  
Vol 71 (1) ◽  
pp. 28-30 ◽  
Author(s):  
Md. Serajul Haque Faizi ◽  
Turganbay S. Iskenderov ◽  
Natalia O. Sharkina
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Asymmetric Unit ◽  
Aromatic Rings ◽  
Compound C ◽  
Independent Molecules ◽  
Phenol Ring

The title compound, C19H16N2O, crystallized with two independent molecules (AandB) in the asymmetric unit. There is an intramolecular O—H...N hydrogen bond in each molecule with the phenol ring being inclined to the central benzene ring by 4.93 (14) and 7.12 (14)° in moleculesAandB, respectively. The conformation of the two molecules differs essentially in the orientation of the terminal aminophenyl ring with respect to the central benzene ring; this dihedral angle is 50.51 (4)° in moleculeAand 54.61 (14)° in moleculeB. The two outer aromatic rings are inclined to one another by 51.39 (14) and 49.88 (14)° in moleculesAandB, respectively. In the crystal, molecules are connected by N—H...O hydrogen bonds generating –A-B–A–B– zigzag chains extending along [010]. The chains are linkedviaC—H...π interactions involving neighbouringAmolecules, forming slabs lying parallel to (100).

scholarly journals (1S,2R,8R)-11-Amino-2,2-dichloro-3,7,7,10-tetramethyltricyclo[6.4.0.01,3]dodec-10-en-9-one

IUCrData ◽  
2017 ◽  
Vol 2 (2) ◽  
Author(s):  
Mustapha Ait Elhad ◽  
Ahmed Benharref ◽  
Lahcen El Ammari ◽  
Mohamed Saadi ◽  
Abdelouahd Oukhrib ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Membered Ring ◽  
Monoclinic Space Group ◽  
Boat Conformation ◽  
Asymmetric Unit ◽  
Space Group ◽  
Axis Direction ◽  
Compound C ◽  
Independent Molecules

The title compound, C16H23Cl2NO, crystallizes in the monoclinic space groupP21with two independent molecules (AandB) in the asymmetric unit. They have essentially the same conformation. Each molecule is built up from fused six- and seven-membered rings and an additional three-membered ring. The six-membered ring has an envelope conformation, with the C atom belonging to the three-membered ring forming the flap, while the seven-membered ring displays a boat conformation. In the crystal, molecules are linked into chains propagating along thea-axis direction by N—H...O hydrogen bonds.

scholarly journals Crystal structure of diethyl 3,3′-[(2-fluorophenyl)methylidene]bis(1H-indole-2-carboxylate)

2017 ◽  
Vol 73 (11) ◽  
pp. 1790-1792 ◽  
Author(s):  
Xin-Hua Lu ◽  
Hong-Shun Sun ◽  
Yuan Cai ◽  
Lu-Lu Chen ◽  
Yang-Feng Chen
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Indole Ring ◽  
Ring Systems ◽  
Compound C ◽  
The Mean ◽  
Supramolecular Chains ◽  
Centrosymmetric Dimers

In the title compound, C29H25FN2O4, the mean planes of the two indole ring systems (r.m.s. deviations = 0.1392 and 0.0115 Å) are approximately perpendicular to one another, subtending a dihedral angle of 86.0 (5)°; the benzene ring is twisted with respect to the mean planes of the two indole ring systems by 83.3 (2) and 88.1 (4)°, respectively. In the crystal, pairs of N—H...O hydrogen bonds link the molecules into centrosymmetric dimers, which are further linked by N—H...O hydrogen bonds into supramolecular chains propagating along the [101] direction.

scholarly journals 1,2-Bis(1H-tetrazol-5-yl)benzene dihydrate

2009 ◽  
Vol 65 (6) ◽  
pp. o1331-o1331 ◽  
Author(s):  
Hai-Jun Xu ◽  
Yi-Jie Pan ◽  
Li-Jing Cui
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Tetrazole Ring ◽  
Water Molecules ◽  
Asymmetric Unit ◽  
Compound C

The asymmetric unit of the title compound, C8H6N8·2H2O, contains one half-molecule, with the benzene ring on a centre of symmetry, and two uncoordinated water molecules. The benzene ring is oriented at a dihedral angle of 34.43 (12)° with respect to the tetrazole ring. Strong O—H...N hydrogen bonds link the water molecules to the N atoms of the tetrazole ring. In the crystal structure, strong intermolecular O—H...O and O—H...N hydrogen bonds link the molecules into a network. One of the water H atoms is disordered over two positions and was refined with occupancies of 0.50.

scholarly journals Crystal structure of 2,2,4-trimethyl-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepine hemihydrate

2015 ◽  
Vol 71 (8) ◽  
pp. o570-o571
Author(s):  
K. S. Ezhilarasi ◽  
A. Akila ◽  
S. Ponnuswamy ◽  
B. K. Revathi ◽  
G. Usha
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Water Molecule ◽  
Benzene Ring ◽  
Title Compound ◽  
Organic Molecules ◽  
Chair Conformation ◽  
Asymmetric Unit ◽  
Compound C ◽  
The Mean

The title compound, C12H18N2·0.5H2O, crystallizes with two independent organic molecules (AandB) in the asymmetric unit, together with a water molecule of crystallization. The diazepine rings in each molecule have a chair conformation. The dihedral angle between benzene ring and the mean plane of the diazepine ring is 21.15 (12)° in moleculeAand 17.42 (11)° in moleculeB. In the crystal, molecules are linked by N—H...O and O—H...N hydrogen bonds, forming zigzag chains propagating along [001].

scholarly journals Crystal structure of a new polymorph of di(thiophen-3-yl) ketone

2017 ◽  
Vol 73 (10) ◽  
pp. 1560-1562
Author(s):  
Jörg Hübscher ◽  
André U. Augustin ◽  
Wilhelm Seichter ◽  
Edwin Weber
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Asymmetric Unit ◽  
Orthorhombic Space Group ◽  
Space Group ◽  
Π Interactions ◽  
Compound C

The crystal structure of the title compound, C9H6OS2, represents a new polymorph. The crystal structure was solved in the orthorhombic space groupPbcnwith one half of the molecule in the asymmetric unit. The thiophene rings are perfectly planar and twisted with respect to each other, showing the molecule to be in an S,O-trans/S,O-transconformation. In the crystal, C—H...O hydrogen bonds connect the molecules into layers extending parallel to theabplane. The crystal structure also features π–π interactions.

scholarly journals 6-(1H-Indol-3-yl)-4-phenyl-2,2′-bipyridine-5-carbonitrile

2009 ◽  
Vol 65 (6) ◽  
pp. o1187-o1187 ◽  
Author(s):  
Weijun Zhu ◽  
Yan Xiang ◽  
Songlei Zhu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Pyridine Ring ◽  
Ring System ◽  
Indole Ring ◽  
Compound C ◽  
Centrosymmetric Dimers

In the molecule of the title compound, C25H16N4, the pyridine rings are oriented at a dihedral angle of 0.92 (3)°, while the dihedral angle between the benzene ring and the adjacent pyridine ring is 56.51 (3)°. In the crystal structure, intermolecular N—H...N hydrogen bonds link the molecules into centrosymmetric dimers, formingR22(16) ring motifs. π–π contacts between the pyridine ring and the indole ring system and between the pyridine rings [centroid–centroid distances = 3.923 (2) and 3.724 (2) Å] may further stabilize the structure. Two weak C—H...π interactions are also present.

scholarly journals A new polymorph ofN-(2-{N′-[(1E)-2-hydroxybenzylidene]hydrazinecarbonyl}phenyl)benzamide

2014 ◽  
Vol 70 (6) ◽  
pp. o645-o646
Author(s):  
Shaaban K. Mohamed ◽  
Joel T. Mague ◽  
Mehmet Akkurt ◽  
Herman Potgieter ◽  
Mustafa R. Albayati
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Phenyl Ring ◽  
Three Dimensional ◽  
Supramolecular Network ◽  
Monoclinic Space Group ◽  
Acta Cryst ◽  
Space Group ◽  
Compound C

The title compound, C21H17N3O3, is a new polymorph of an already published structure [Shashidharet al.(2006).Acta Cryst.E62, o4473–o4475]. The previously reported structure crystallizes in the monoclinic space groupC2/c, whereas the structure reported here is in the tetragonal space groupI41/a. The bond lengths and angles are similar in both structures. The molecule adopts an extended conformationviaintramolecular N—H...O and O—H...N hydrogen bonds; the terminal phenyl ring and the hydroxylphenyl ring are twisted with respect to the central benzene ring by 44.43 (7) and 21.99 (8)°, respectively. In the crystal, molecules are linked by N—H...O hydrogen bonds, weak C—H...O hydrogen bonds and weak C—H...π interactions into a three-dimensional supramolecular network.

scholarly journals Crystal structure of a second monoclinic polymorph of 3-methoxybenzoic acid with Z′ = 1

2019 ◽  
Vol 75 (1) ◽  
pp. 8-11
Author(s):  
Tze Shyang Chia ◽  
Huey Chong Kwong ◽  
Qin Ai Wong ◽  
Ching Kheng Quah ◽  
Md. Azharul Arafath
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Lattice Energy ◽  
Polymorphic Form ◽  
Monoclinic Space Group ◽  
Asymmetric Unit ◽  
Space Group ◽  
Compound C ◽  
Centroid Distance ◽  
Methoxybenzoic Acid

A new polymorphic form of the title compound, C8H8O3, is described in the centrosymmetric monoclinic space group P21/c with Z′ = 1 as compared to the first polymorph, which crystallizes with two conformers (Z′ = 2) in the asymmetric unit in the same space group. In the crystal of the second polymorph, inversion dimers linked by O—H...O hydrogen bonds occur and these are linked into zigzag chains, propagating along the b-axis direction by C—H...O links. The crystal structure also features a weak π–π interaction, with a centroid-to-centroid distance of 3.8018 (6) Å. The second polymorph of the title compound is less stable than the reported first polymorph, as indicated by its smaller calculated lattice energy.

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