scholarly journals 2-(Naphthalene-2-sulfonamido)-3-phenylpropanoic acid

2013 ◽  
Vol 69 (2) ◽  
pp. o194-o194 ◽  
Author(s):  
Hafiz Mubashar-ur-Rehman ◽  
Muhammad Nadeem Arshad ◽  
Abdullah M. Asiri ◽  
Islam Ullah Khan ◽  
Muhammad Bilal
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Torsion Angle ◽  
Title Compound ◽  
Phenyl Ring ◽  
Ring System ◽  
Naphthalene Ring ◽  
Compound C ◽  
Π Stacking

In the title compound, C19H17NO4S, the phenyl ring and the naphthalene ring system are oriented at a dihedral angle of 4.12 (2)° and the molecule adopts a U-shaped conformation. The Cc—C—N—S (c = carboxy) torsion angle is 90.98 (15)°. In the crystal, molecules are linked by O—H...O and N—H...O hydrogen bonds, resulting in (100) chains incorporating centrosymmetricR22(14) andR22(10) loops. Weak aromatic π–π stacking is also observed [centroid–centroid separations = 3.963 (2) and 3.932 (2) Å].

scholarly journals Ethyl 5-(4-methylphenyl)-2,4,5,7-tetraazatricyclo[6.4.0.02,6]dodeca-1(8),3,6,9,11-pentaene-3-carboxylate

IUCrData ◽  
2018 ◽  
Vol 3 (6) ◽  
Author(s):  
Ahmed Moussaif ◽  
Youssef Ramli ◽  
Lhoussaine El Ghayati ◽  
El Mokhtar Essassi ◽  
Joel T. Mague
Keyword(s):  
Hydrogen Bonds ◽  
Ethyl Ester ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Torsion Angle ◽  
Title Compound ◽  
Molecular Conformation ◽  
Ring System ◽  
Compound C ◽  
Π Stacking

In the title compound, C18H16N4O2, the dihedral angle between the fused tricyclic ring system and the pendant benzene ring is 11.03 (4)°. The C—O—C—C torsion angle in the ethyl ester is 102.97 (12)°. The molecular conformation is supported by intramolecular C—H...N and C—H...O hydrogen bonds, which close S(6) and S(7) rings, respectively. Aromatic π–π stacking is observed in the crystal [shortest centroid–centroid separation = 3.5274 (7) Å].

scholarly journals 2-Hydroxy-N′-[2-(6-methoxynaphthalen-2-yl)propanoyl]benzohydrazide

2012 ◽  
Vol 68 (4) ◽  
pp. o1251-o1252
Author(s):  
Shaaban Kamel Mohamed ◽  
Peter N. Horton ◽  
Mehmet Akkurt ◽  
Mustafa R. Albayati ◽  
Herman Potgeiter
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Torsion Angle ◽  
Title Compound ◽  
Ring System ◽  
Naphthalene Ring ◽  
Compound C ◽  
Ring Motif

In the title compound, C21H20N2O4, the naphthalene ring system makes a dihedral angle of 84.5 (3)° with the benzene ring, and the –C(=O)–N(H)–N(H)–C(=O)– torsion angle is 70.7 (7)°, so that the molecule is twisted. AnS(6) ring motif is formedviaan intramolecular O—H...O hydrogen bond. In the crystal, molecules are linked by N—H...O and C–H...O hydrogen bonds into supramolecular layers in theabplane.

scholarly journals 9-O-Butylberberrubinium bromide

2009 ◽  
Vol 65 (6) ◽  
pp. o1370-o1370 ◽  
Author(s):  
Zhu Chen ◽  
Xue-Gang Li ◽  
Yong-Sheng Xie ◽  
Xiao-Li Ye
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Phenyl Ring ◽  
Crystal Packing ◽  
Ring System ◽  
Naphthalene Ring ◽  
Π Interactions ◽  
Compound C

In the title compound, C23H24NO4+·Br−, the butyl chain is disordered between two conformations; the occupancies refined to 0.735 (7) and 0.265 (7). The dihedral angle between the naphthalene ring system and the phenyl ring is 11.6 (2)°. In the crystal structure, the cations are packedviaπ–π interactions into stacks propagating in the [010] direction. Weak intermolecular C—H...O and C—H...Br hydrogen bonds contribute further to the crystal packing stability.

scholarly journals 1-Benzyl-1H-benzotriazole

2012 ◽  
Vol 68 (4) ◽  
pp. o1132-o1132 ◽  
Author(s):  
P. Selvarathy Grace ◽  
Samuel Robinson Jebas ◽  
B. Ravindran Durai Nayagam ◽  
Dieter Schollmeyer
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Phenyl Ring ◽  
Ring System ◽  
Maximum Deviation ◽  
Stacking Interactions ◽  
Compound C ◽  
Π Stacking ◽  
Centroid Distance

In the title compound, C13H11N3, the benzotriazole ring system is essentially planar, with a maximum deviation of 0.0173 (18) Å, and forms a dihedral angle of 75.08 (8)Å with the phenyl ring. In the crystal, pairs of weak C—H...N hydrogen bonds form inversion dimers. In addition, there are weak C—H...π(arene) interactions and weak π–π stacking interactions, with a centroid–centroid distance of 3.673 (11) Å.

scholarly journals 2-Bromo-1-(1-phenylsulfonyl-1H-indol-3-yl)propan-1-one

2014 ◽  
Vol 70 (3) ◽  
pp. o295-o296
Author(s):  
C. Ramathilagam ◽  
P. R. Umarani ◽  
V. Saravanan ◽  
A. K. Mohanakrishnan ◽  
B. Gunasekaran ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Phenyl Ring ◽  
Ring System ◽  
Indole Ring ◽  
Methyl Group ◽  
Π Interactions ◽  
Compound C ◽  
A Chain

In the title compound, C17H14BrNO3S, the phenyl ring makes a dihedral angle of 89.78 (16)° with the plane of the indole ring system. The terminal Br atom and the methyl group are disordered over two sets of sites, with site occupancies of 0.860 (2) and 0.140 (2). In the crystal, molecules are linked into a chain along theb-axis direction by weak C—H...O hydrogen bonds. The chains are further linked by C—H...π interactions, forming layers parallel to thebcplane.

scholarly journals 1-{(Z)-[2-Methoxy-5-(trifluoromethyl)anilino]methylidene}naphthalen-2(1H)-one

2013 ◽  
Vol 69 (2) ◽  
pp. o163-o163
Author(s):  
Hakan Kargılı ◽  
Ayşen Alaman Ağar ◽  
Gökhan Alpaslan ◽  
Orhan Büyükgüngör ◽  
Ahmet Erdönmez
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Tautomeric Form ◽  
Ring System ◽  
Trifluoromethyl Group ◽  
Naphthalene Ring ◽  
Compound C

The title compound, C19H14F3NO2, crystallizes in the keto–amine tautomeric form, with a strong intramolecular N—H...O hydrogen bond. The molecule is almost planar; the dihedral angle between the naphthalene ring system and the benzene ring is 4.60 (7)°. In the crystal, molecules are linked into chains along thecaxis by C—H...O hydrogen bonds. The F atoms of the trifluoromethyl group are disordered over two positions with refined site occupancies of 0.668 (9) and 0.332 (9).

scholarly journals rac-Methyl (1R,3′S)-1′,1′′-dimethyl-2,2′′-dioxo-2H-dispiro[acenaphthylene-1,2′-pyrrolidine-3′,3′′-indoline]-4′-carboxylate

2013 ◽  
Vol 69 (2) ◽  
pp. o235-o235 ◽  
Author(s):  
G. Ganesh ◽  
Panneer Selvam Yuvaraj ◽  
Chinthalapuri Divakara ◽  
Boreddy S. R. Reddy ◽  
A. SubbiahPandi
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
The Other ◽  
Dihedral Angles ◽  
Indole Ring ◽  
Naphthalene Ring ◽  
Pyrrolidine Ring ◽  
Compound C

In the title compound, C26H22N2O4, the pyrrolidine ring adopts a twisted conformation and the other five-membered rings adopt envelope conformations with the spiro C atoms as the flap atoms. The naphthalene ring system of the dihydroacenaphthylene group forms dihedral angles of 89.2 (9) and 75.5 (6)° with the pyrrolidine and indole rings, respectively. The pyrrolidine ring makes a dihedral angle of 80.1 (9)° with the indole ring. In the crystal, molecules are linked by weak C—H...O hydrogen bonds, forming chains along theb-axis direction.

7,7a-Dihydroisoindolo[2,1-a]pyrimidin-12-one

2006 ◽  
Vol 62 (7) ◽  
pp. o2929-o2931
Author(s):  
Mustafa Odabaşoğlu ◽  
Orhan Büyükgüngör
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Naphthalene Ring ◽  
Π Interactions ◽  
Compound C

The crystal structure of the title compound, C18H12N2O, is stabilized by intermolecular N—H...O hydrogen bonds and C—H...π interactions. N—H...O hydrogen bonds generate a C(6) chain. The dihedral angle between the isoindoline group and the naphthalene ring system is 24.96 (12)°.

scholarly journals Crystal structure of 3-amino-1-(4-hydroxyphenyl)-1H-benzo[f]chromene-2-carbonitrile

2015 ◽  
Vol 71 (8) ◽  
pp. o536-o537
Author(s):  
Mehmet Akkurt ◽  
Peter N. Horton ◽  
Sabry H. H. Younes ◽  
Shaaban K. Mohamed ◽  
Mustafa R. Albayati
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Boat Conformation ◽  
Naphthalene Ring ◽  
Pyran Ring ◽  
Compound C ◽  
The Mean

In the title compound, C20H14N2O2, the hydroxybenzene ring is almost perpendicular to the mean plane of the naphthalene ring system, making a dihedral angle of 85.56 (4)°. The 4H-pyran ring fused with the naphthalene ring system has a flattened boat conformation. In the crystal, O—H...N and N—H...O hydrogen bonds link the molecules into a supramolecular layer in thebcplane; N—H...π interactions also contribute to this arrangement. The layers are linked by weak by C—H...π and π–π [inter-centroid separation = 3.8713 (7) Å] interactions.

scholarly journals 6-Amino-3-methyl-1-phenyl-1H-pyrazolo[3,4-b]pyrazine-5-carboxamide

IUCrData ◽  
2016 ◽  
Vol 1 (11) ◽  
Author(s):  
Manpreet Kaur ◽  
Shaaban K. Mohamed ◽  
Mehmet Akkurt ◽  
Jerry P. Jasinski ◽  
Talaat I. El-Emary ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Phenyl Ring ◽  
Molecular Conformation ◽  
Ring System ◽  
Pyrazine Ring ◽  
Π Interactions ◽  
Compound C ◽  
Phenyl Rings

In the title compound, C13H12N6O, the pyrazolo[3,4-b]pyrazine ring system is planar (r.m.s. deviation for the nine fitted atoms = 0.024 Å) and makes a dihedral angle of 5.72 (6)° with the pendent phenyl ring. The molecular conformation is stabilized by intramolecular N—H...O and C—H...N hydrogen bonds, each generating anS(6) loop. In the crystal, pairs of molecules are connected into inversion dimers by strong N—H...O hydrogen bonds, formingR22(8) ring motifs. These are linked into sheets parallel to (100)viaN—H...N hydrogen bonds; π–π interactions between symmetry-related pyrazole and phenyl rings [centroid–centroid distances = 3.4453 (9) Å] within the sheets are also noted.

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