scholarly journals N-(4-Chlorophenyl)-2-(naphthalen-1-yl)acetamide

2012 ◽  
Vol 68 (8) ◽  
pp. o2463-o2463
Author(s):  
Hoong-Kun Fun ◽  
Ching Kheng Quah ◽  
Prakash S. Nayak ◽  
B. Narayana ◽  
B. K. Sarojini
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Maximum Deviation ◽  
Naphthalene Ring ◽  
Compound C

In the title compound, C18H14ClNO, the naphthalene ring system [maximum deviation = 0.014 (9) Å] forms a dihedral angle of 74.8 (2)° with the benzene ring. In the crystal, molecules are linkedviaN—H...O hydrogen bonds into chains propagating along [010].

scholarly journals 1-[2,6-Dichloro-4-(trifluoromethyl)phenyl]-3,4-dimethylpyrano[2,3-c]pyrazol-6(1H)-one

2012 ◽  
Vol 68 (8) ◽  
pp. o2350-o2350
Author(s):  
Hoong-Kun Fun ◽  
Wan-Sin Loh ◽  
B. K. Sarojini ◽  
B. J. Mohan ◽  
B. Narayana
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Pyrazole Ring ◽  
Ring System ◽  
Helical Chain ◽  
Maximum Deviation ◽  
Compound C

In the title compound, C15H9Cl2F3N2O2, the 1,6-dihydropyrano[2,3-c]pyrazole ring system is almost planar, with a maximum deviation of 0.0226 (14) Å, and forms a dihedral angle of 69.90 (6)° with the benzene ring. In the crystal, molecules are linked into a helical chain along thecaxis by C—H...O hydrogen bonds.

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 6-Cyanonaphthalen-2-yl 4-hexylbenzoate

2014 ◽  
Vol 70 (5) ◽  
pp. o620-o620 ◽  
Author(s):  
Md. Lutfor Rahman ◽  
H. T. Srinivasa ◽  
Mohd. Yusoff Mashitah ◽  
Huey Chong Kwong ◽  
Ching Kheng Quah
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Minor Component ◽  
Ring System ◽  
Naphthalene Ring ◽  
Π Interactions ◽  
Compound C

In the title compound, C24H23NO2, a whole molecule is disordered over two sets of sites with occupancies in a ratio of 0.692 (6):0.308 (6). In the major disorder component, the naphthalene ring system forms a dihedral angle of 68.6 (5)° with the benzene ring. The corresponding angle in the minor component is 81.6 (10)°. In the crystal, molecules are linked into chains propagating along theb-axis directionviaweak C—H...O hydrogen bonds. The crystal packing is further consolidated by weak C—H...π interactions.

scholarly journals 12-Ethyl-6a,10a-dihydro-5H-6-oxachrysene

IUCrData ◽  
2020 ◽  
Vol 5 (3) ◽  
Author(s):  
Alan J. Lough ◽  
Austin Pounder ◽  
William Tam
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Chair Conformation ◽  
Ring System ◽  
Naphthalene Ring ◽  
Pyran Ring ◽  
Compound C

In the title compound, C19H16O, the pyran ring is in a half-chair conformation. The essentially planar naphthalene ring system (r.m.s. deviation = 0.020 Å) forms a dihedral angle of 14.37 (5)° with the fused benzene ring. In the crystal, pairs of molecules are connected into inversion dimers by weak C—H...O hydrogen bonds to generate R 2 2(6) loops.

scholarly journals 2-[3-(1,3-Benzothiazol-2-yl)-2,2-dimethylpropyl]-2-methyl-2,3-dihydro-1,3-benzothiazole

2012 ◽  
Vol 68 (8) ◽  
pp. o2349-o2349
Author(s):  
Sammer Yousuf ◽  
Hina Siddiqui ◽  
Rabia Farooq ◽  
M. Iqbal Choudhary
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Thiazole Ring ◽  
Maximum Deviation ◽  
Envelope Conformation ◽  
Compound C ◽  
Graph Set

In the title compound, C20H22N2S2, the five-membered thiazole ring of the 2-methyl-2,3-dihydro-1,3-benzothiazole unit has an envelope conformation. The dihedral angle between the planar [maximum deviation of 0.014 (1) Å for the S atom] benzothiazole ring system and the benzene ring is 78.37 (12)°. Two intramolecular C—H...S hydrogen bonds are observed, forming rings of graph-set motifS(6). In the crystal, the molecules are consolidated in pairs through N—H...N hydrogen bonds and are arranged parallel to thebaxis.

scholarly journals 2-(Naphthalen-1-yl)-N-(1,3-thiazol-2-yl)acetamide

2012 ◽  
Vol 68 (8) ◽  
pp. o2464-o2464 ◽  
Author(s):  
Hoong-Kun Fun ◽  
Ching Kheng Quah ◽  
Prakash S. Nayak ◽  
B. Narayana ◽  
B. K. Sarojini
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Thiazole Ring ◽  
Maximum Deviation ◽  
Naphthalene Ring ◽  
Compound C

In the title compound, C15H12N2OS, the naphthalene ring system [maximum deviation = 0.026 (1) Å] forms a dihedral angle of 85.69 (6)° with the thiazole ring [maximum deviation = 0.010 (1) Å]. In the crystal, inversion dimers linked by pairs of N—H...N hydrogen bonds generateR22(8) loops. The dimers are linked by C—H...O hydrogen bonds into chains propagating along [110].

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 4-{[7-(Trifluoromethyl)quinolin-4-yl]amino}benzenesulfonamide–ethanol–methanol (1/0.47/0.53)

2012 ◽  
Vol 68 (8) ◽  
pp. o2396-o2396 ◽  
Author(s):  
Mostafa M. Ghorab ◽  
Mansour S. Al-Said ◽  
Abdullah A. Al-Mishari ◽  
Ching Kheng Quah ◽  
Hoong-Kun Fun
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Maximum Deviation ◽  
Quinoline Ring ◽  
Compound C

In the title compound, C16H12F3N3O2S·0.47C2H5OH·0.53CH3OH, the quinoline ring system is approximately planar, with a maximum deviation of 0.035 (3) Å, and makes a dihedral angle of 52.67 (9)° with the benzene ring. The F atoms of the –CF3group are disordered over two orientations, with refined site occupancies of 0.56 (2) and 0.44 (2). A single solvate site is occupied at random by ethanol or methanol, with refined site occupancies of 0.470 (6) and 0.530 (6), respectively. In the crystal, molecules are linkedviaN—H...O, N—H...N, O—H...O and C—H...O hydrogen bonds, thereby forming sheets lying parallel to (010).

scholarly journals 4-(Octyloxy)phenyl 2-oxo-2H-chromene-3-carboxylate

2013 ◽  
Vol 69 (2) ◽  
pp. o212-o212 ◽  
Author(s):  
B. S. Palakshamurthy ◽  
S. Sreenivasa ◽  
H. T. Srinivasa ◽  
K. R. Roopashree ◽  
H. C. Devarajegowda
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Maximum Deviation ◽  
Compound C ◽  
Best Fit ◽  
Chromene Ring

In the title compound, C24H26O5, the 2H-chromene ring system is essentially planar, with a maximum deviation of 0.029 (2) Å from the best-fit mean plane incorporating both rings. The dihedral angle between the 2H-chromene ring system and the benzene ring is 21.00 (1)°. In the crystal, pairs of C—H...O hydrogen bonds generate anR22(8) ring pattern. These contacts are bolstered by weaker bifurcated C—H...O hydrogen bonds.

scholarly journals Crystal structure of (E)-N-[(2-methoxynaphthalen-1-yl)methylidene]-3-nitroaniline

2015 ◽  
Vol 71 (12) ◽  
pp. o941-o942
Author(s):  
Devika Bhai R. ◽  
C. R. Girija ◽  
Shalini Suresh ◽  
Ramakrishna Reddy
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Nitro Group ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Stacking Interactions ◽  
Naphthalene Ring ◽  
Compound C

In the title compound, C18H14N2O3, the dihedral angle between the naphthalene ring system and the benzene ring is 59.99 (13)°. A short intramolecular C—H...N contact closes anS(6) ring. The nitro group is disordered over two orientations in a statistical ratio. In the crystal, weak C—H...O hydrogen bonds and very weak π–π stacking interactions [centroid–centroid separation = 3.9168 (17) Å] are observed.

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