scholarly journals 14-Ethoxy-4,6,9-trimethyl-8,12-dioxa-4,6-diazatetracyclo[8.8.0.02,7.013,18]octadeca-2(7),13,15,17-tetraene-3,5,11-trione

2013 ◽  
Vol 69 (2) ◽  
pp. o272-o272 ◽  
Author(s):  
G. Jagadeesan ◽  
D. Kannan ◽  
M. Bakthadoss ◽  
S. Aravindhan
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Methoxy Group ◽  
Pyran Ring ◽  
Pyrone Ring ◽  
Compound C

In the title compound, C19H20N2O6, the pyrone and pyran rings adopt envelope conformations with the same common C atom as the flap, the dihedral angle between the planes of the remaining ring atoms being 68.27 (4)°. The planar atoms of the pyran ring and the diazacyclic ring are almost coplanar, the dihedral angle between their mean planes being 3.29 (7)°. Moreover, the planar atoms of the pyrone ring and benzene ring of the coumarin unit are also close to coplanar, the dihedral angle between their mean planes being 8.03 (9)°. The methoxy group lies in the plane of the benzene ring, with a dihedral angle between their mean planes of 9.4 (2)°. In the crystal, the molecules are linked by C—H...O hydrogen bonds resulting in sheets of molecules in theacplane.

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 (E)-4-Bromo-N′-(4-hydroxy-3-methoxybenzylidene)benzohydrazide monohydrate

2012 ◽  
Vol 68 (4) ◽  
pp. o1069-o1070 ◽  
Author(s):  
Jirapa Horkaew ◽  
Suchada Chantrapromma ◽  
Teerasak Anantapong ◽  
Akkharawit Kanjana-Opas ◽  
Hoong-Kun Fun
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Torsion Angle ◽  
Title Compound ◽  
Methoxy Group ◽  
Three Dimensional ◽  
Compound C ◽  
Dimensional Network ◽  
Benzene Rings

In the title compound, C15H13BrN2O3·H2O, the dihedral angle between the two benzene rings is 13.92 (6)°. The methoxy group of the 4-hydroxy-3-methoxyphenyl is almost coplanar with its bound benzene ring, as seen by the Cmethyl—O—C—C torsion angle of −0.35 (16)°. In the crystal, molecules are linked into a three-dimensional network by N—H...O, O—H...N and O—H...O hydrogen bonds and also weak C—H...O interactions. A short C...O contact of 3.0191 (15) Å is also present.

scholarly journals 9-(4-Formylphenyl)-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione

IUCrData ◽  
2018 ◽  
Vol 3 (1) ◽  
Author(s):  
R. Kalaivanan ◽  
V. Sughanya ◽  
N. Sureshbabu
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Boat Conformation ◽  
Pyran Ring ◽  
Envelope Conformation ◽  
Compound C ◽  
The Mean

In the title compound, C24H26O4, the central 4H-pyran ring adopts a flattened boat conformation, with the mean and maximum deviations of the ring being 0.0582 (6) and 0.1012 (3) Å, respectively. The two cyclohexenone rings on opposite sides of the pyran ring each adopt an envelope conformation; the C atom bearing a dimethyl substituent is the flap atom in each case. The mean planes of the pyran ring and the substituent benzene ring subtend a dihedral angle of 86.45 (2)°. In the crystal, molecules are linked into inversion dimers via pairs of C—H...O hydrogen bonds.

4-(4-Allyl-2-methoxyphenoxy)benzene-1,2-dicarbonitrile

2007 ◽  
Vol 63 (11) ◽  
pp. o4205-o4205 ◽  
Author(s):  
Onur Şahin ◽  
Orhan Büyükgüngör ◽  
Selami Şaşmaz ◽  
Cihan Kantar
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Methoxy Group ◽  
Chain Structure ◽  
Intermolecular Hydrogen Bonds ◽  
Π Interactions ◽  
Compound C ◽  
Benzene Rings

In the title compound, C18H14N2O2, the dihedral angle between the two benzene rings is 88.6 (1)°. The allyl group is disordered over two orientations, with refined occupancies of 0.695 (6) and 0.305 (6). The methoxy group is coplanar with the attached benzene ring. C—H...N intermolecular hydrogen bonds link the molecules into a C(6) chain along the a axis. The chain structure is further strengthened by C—H...π interactions.

scholarly journals N-(5-Chloro-1,3-thiazol-2-yl)-2,4-difluorobenzamide

2012 ◽  
Vol 68 (6) ◽  
pp. o1857-o1857 ◽  
Author(s):  
Xi-Wang Liu ◽  
Jian-Yong Li ◽  
Han Zhang ◽  
Ya-Jun Yang ◽  
Ji-Yu Zhang
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Benzoyl Chloride ◽  
Bond Lengths ◽  
Compound C

The title compound, C10H5ClF2N2OS, was obtained by linking an amino heterocycle and a substituted benzoyl chloride. The dihedral angle between the two rings is 41.2 (2)° and the equalization of the amide C—N bond lengths reveals the existence of conjugation between the benzene ring and the thiazole unit. In the crystal, pairs of N—H...N hydrogen bonds link molecules into inversion dimers. Non-classical C—H...F and C—H...O hydrogen bonds stabilize the crystal structure.

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

2012 ◽  
Vol 68 (8) ◽  
pp. o2565-o2565 ◽  
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 ◽  
Thiazole Ring ◽  
Compound C

In the title compound, C11H9FN2OS, the 1,3-thiazole ring is planar (r.m.s. deviation = 0.007 Å) and forms a dihedral angle of 73.75 (5)° with the benzene ring. In the crystal, molecules are linkedviapairs of N—H...N and C—H...F hydrogen bonds into chains along [100].

scholarly journals N-(3-Chloro-1H-indazol-5-yl)-4-methoxybenzenesulfonamide

2013 ◽  
Vol 69 (11) ◽  
pp. o1632-o1632
Author(s):  
Hakima Chicha ◽  
El Mostapha Rakib ◽  
Latifa Bouissane ◽  
Mohamed Saadi ◽  
Lahcen El Ammari
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Two Dimensional ◽  
Common Edge ◽  
Compound C ◽  
Dimensional Network ◽  
The Common ◽  
The Mean

In the title compound, C14H12ClN3O3S, the fused five- and six-membered rings are folded slightly along the common edge, forming a dihedral angle of 3.2 (1)°. The mean plane through the indazole system makes a dihedral angle of 30.75 (7)° with the distant benzene ring. In the crystal, N—H...O hydrogen bonds link the molecules, forming a two-dimensional network parallel to (001).

scholarly journals Diethyl 3,3′-[(3-fluorophenyl)methylene]bis(1H-indole-2-carboxylate)

IUCrData ◽  
2020 ◽  
Vol 5 (7) ◽  
Author(s):  
Hong Jiang ◽  
Yu-Long Li ◽  
Jin Zhou ◽  
Hong-Shun Sun ◽  
Qing-Yu Zhang ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Indole Ring ◽  
Ring Systems ◽  
Compound C ◽  
The Mean ◽  
Supramolecular Chains

In the title compound, C29H25FN2O4, the mean planes of the indole ring systems are approximately perpendicular to one another [dihedral angle = 88.3 (4)°]. The benzene ring is twisted with respect to the indole ring systems by 49.8 (5) and 77.6 (3)°. In the crystal, pairs of N—H...O hydrogen bonds link the molecules into the inversion dimers which are further linked into supramolecular chains propagating along the [110] direction.

scholarly journals 4-(4-Methoxyphenyl)-5,7-dimethylchroman-2-one

IUCrData ◽  
2016 ◽  
Vol 1 (3) ◽  
Author(s):  
Jaqueline Evangelista Queiroz ◽  
Giuliana Muniz Vila Verde ◽  
Mariette Miguens Pereira ◽  
Manuela Ramos Silva ◽  
Gilberto L. B. Aquino
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Boat Conformation ◽  
Pyran Ring ◽  
Axis Direction ◽  
Π Interactions ◽  
Microwave Assisted ◽  
Compound C ◽  
The Mean

In the title compound, C18H18O3, a dihydrocoumarin synthesizedviaa microwave-assisted hydroarylation reaction, the 4-methoxyphenyl ring is inclined to the mean plane of the coumarin moiety by 78.21 (9)°. The pyran ring has a screw-boat conformation and its mean plane is inclined to the fused benzene ring by 13.88 (11)°. In the crystal, molecules are linkedviaC—H...O hydrogen bonds, forming ribbons along theb-axis direction. The ribbons are linkedviaC—H...π interactions, forming slabs parallel to theabplane.

scholarly journals Crystal structure of tolylfluanid

2014 ◽  
Vol 70 (10) ◽  
pp. o1114-o1115
Author(s):  
Seonghwa Cho ◽  
Jineun Kim ◽  
Gihaeng Kang ◽  
Tae Ho Kim
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Dimethylamino Group ◽  
Axis Direction ◽  
Compound C ◽  
The Mean ◽  
Cl Atom

The title compound, C10H13Cl2FN2O2S2{systematic name:N-[(dichlorofluoromethyl)sulfanyl]-N′,N′-dimethyl-N-p-tolylsulfamide}, is a well known fungicide. The dihedral angle between the mean plane of the dimethylamino group and that of the benzene ring is 32.3 (3)°. One Cl atom and one F atom of the dichlorofluoromethylthio group are disordered over two sets of sites with an occupancy ratio of 0.605 (9):0.395 (9). In the crystal structure, two C—H...Cl hydrogen bonds link adjacent molecules, forming dimers withR22(14) loops. C—H...O hydrogen bonds link pairs of dimers into chains along theb-axis direction. These chains are joined by an additional C—H...O contact, generating a sheet in theabplane.

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