scholarly journals 9-(2-Hydroxy-4,4-dimethyl-6-oxocyclohex-1-en-1-yl)-3,3-dimethyl-2,3,4,9-tetrahydro-1H-xanthen-1-one

2012 ◽  
Vol 68 (6) ◽  
pp. o1606-o1606 ◽  
Author(s):  
Malahat M. Kurbanova ◽  
Atash V. Gurbanov ◽  
Kamran T. Mahmudov ◽  
Abel M. Maharramov ◽  
Seik Weng Ng
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Chair Conformation ◽  
Ring System ◽  
Compound C ◽  
Cyclohexene Ring ◽  
Fused Ring ◽  
The Mean ◽  
A Chain ◽  
Fused Ring System

The cyclohexene ring that constitutes a part of the tetrahydroxanthene fused-ring system of the title compound, C23H26O4, adopts a flattened half-chair conformation that approximates an envelope conformation (in which the methylene C atom bearing the two methyl substituents represents the flap) as five of the six atoms lie approximately on a plane (r.m.s. deviation = 0.020 Å). The mean plane of the cyclohexene ring with the hydroxy substituent is approximately perpendicular to the mean plane of the tetrahydroxanthene system. In the crystal, adjacent molecules are linked by O—H...Ocarbonyl hydrogen bonds into a chain running along the b axis.

scholarly journals 1-(12-Bromododecyl)-5-chloroindoline-2,3-dione

IUCrData ◽  
2016 ◽  
Vol 1 (6) ◽  
Author(s):  
Zineb Tribak ◽  
Youssef Kandri Rodi ◽  
Amal Haoudi ◽  
El Mokhtar Essassi ◽  
Fréderic Capet ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Compound C ◽  
Fused Ring ◽  
Plane Passing ◽  
The Mean ◽  
Fused Ring System

In the structure of the title compound, C20H27BrClNO2, the 5-chloroindoline-2,3-dione ring system is approximately planar, the largest deviation from the mean plane being 0.0237 (10) Å. The mean plane through the fused-ring system makes a dihedral angle of 61.00 (18)° with the mean plane passing through the 1-dodecyl chain. All C atoms of the dodecyl group adopt the planar zigzag arrangement normally observed inn-alkane compounds. In the crystal, molecules are linked by C—H...O hydrogen bonds, forming chains parallel to thebaxis.

scholarly journals 3-(Prop-2-en-1-yl)-2-sulfanylidene-1,2,3,4-tetrahydroquinazolin-4-one

2012 ◽  
Vol 68 (6) ◽  
pp. o1810-o1810
Author(s):  
Rashad Al-Salahi ◽  
Mohamed Al-Omar ◽  
Mohamed Marzouk ◽  
Seik Weng Ng
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Ring System ◽  
Compound C ◽  
Fused Ring ◽  
A Chain ◽  
Fused Ring System

The tetrahydroquinazoline fused-ring system of the title compound, C11H10N2OS, is approximately planar (r.m.s. deviation = 0.019 Å). In the crystal, adjacent molecules are linked by N—H...O hydrogen bonds, forming a chain running along the b axis.

scholarly journals 9-Fluoro-2,4,4a,6-tetrahydrospiro[benzo[c]chromene-3,2′-[1,3]dioxolane]

IUCrData ◽  
2017 ◽  
Vol 2 (1) ◽  
Author(s):  
I. Ayswariya ◽  
P. Rajalakshmi ◽  
R.V. Krishnakumar ◽  
N. Srinivasan
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Chair Conformation ◽  
Ring System ◽  
Pyran Ring ◽  
Compound C ◽  
Cyclohexene Ring ◽  
The Mean ◽  
Chromene Ring

In the title compound, C15H15FO3, the dihedral angle between the mean plane through all the non-H atoms of the dioxolane ring with those of the rest of the atoms of the chromene ring system, including the substituent F atom, is 81.1 (1)°. The pyran ring has an envelope conformation with the O atom as the flap. The cyclohexene ring has a half-chair conformation, while the dioxolane ring has a twisted conformation on an –O—CH2– bond. In the crystal, molecules are linkedviaC—H...O hydrogen bonds, forming chains along [100]. The chains are linked by C—H...π interactions, involving the fluorobenzene ring, forming layers parallel to theacplane.

scholarly journals 3-Benzyl-8-methoxy-2-sulfanylidene-1,2,3,4-tetrahydroquinazolin-4-one

2012 ◽  
Vol 68 (6) ◽  
pp. o1807-o1807 ◽  
Author(s):  
Rashad Al-Salahi ◽  
Mohamed Al-Omar ◽  
Mohamed Marzouk ◽  
Seik Weng Ng
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Phenyl Ring ◽  
Ring System ◽  
Compound C ◽  
Fused Ring ◽  
The Mean ◽  
Fused Ring System ◽  
Benzyl Substituent

The tetrahydroquinazole fused-ring system of the title compound, C16H14N2O2S, is roughly planar (r.m.s. deviation = 0.039 Å); the phenyl ring of the benzyl substituent is aligned at 78.1 (1)° with respect to the mean plane of the fused-ring system. In the crystal, two molecules are linked by a pair of N—H...S hydrogen bonds about a center of inversion, generating a dimer.

scholarly journals 1-Dodecylindoline-2,3-dione

2014 ◽  
Vol 70 (2) ◽  
pp. o229-o229 ◽  
Author(s):  
Fatima-Zahrae Qachchachi ◽  
Fouad Ouazzani Chahdi ◽  
Houria Misbahi ◽  
Michael Bodensteiner ◽  
Lahcen El Ammari
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Ring System ◽  
Compound C ◽  
Dimensional Network ◽  
Fused Ring ◽  
Plane Passing ◽  
The Mean ◽  
Fused Ring System

The structure of the title compound, C20H29NO2, is isotypic to that of its homologue 1-octylindoline-2,3-dione. The indoline ring and the two carbonyl-group O atoms are approximately coplanar, the largest deviation from the mean plane being 0.0760 (10) Å. The mean plane through the fused-ring system is nearly perpendicular to the mean plane passing through the 1-dodecyl chain [dihedral angle = 77.69 (5)°]. All C atoms of the dodecyl group are in an antiperiplanar arrangement. In the crystal, molecules are linked by C—H...O hydrogen bonds, forming a three-dimensional network.

scholarly journals 6-Bromo-2-(4-chlorophenyl)-3-methyl-3H-imidazo[4,5-b]pyridine

IUCrData ◽  
2016 ◽  
Vol 1 (5) ◽  
Author(s):  
Selma Bourichi ◽  
Youssef Kandri Rodi ◽  
Younes Ouzidan ◽  
Joel T. Mague ◽  
El Mokhtar Essassi ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Fused Ring ◽  
The Mean ◽  
Fused Ring System

In the title compound, C13H9BrClN3, the imidazopyridine fused-ring system is almost planar, with r.m.s. deviation of 0.006 (19) Å, and makes a dihedral angle of 29.32 (8)° with the mean plane of the 4-chlorophenyl group. In the crystal, C—H...N hydrogen bonds link the molecules into chains propagating in the [100] direction. Weak intermolecular π–π interactions between the five- and six-membered rings of the 3H-imidazo[4,5-b]pyridine moieties of neighbouring molecules [centroid–centroid distance = 3.8648 (12) Å] further consolidate the packing into layers parallel to theabplane.

scholarly journals Ethyl 2-(6-bromo-2-phenyl-1H-imidazo[4,5-b]pyridin-1-yl)acetate

IUCrData ◽  
2016 ◽  
Vol 1 (5) ◽  
Author(s):  
Mohammed Yassin Hjouji ◽  
Youssef Kandri Rodi ◽  
Joel T. Mague ◽  
Younes Ouzidan ◽  
El Mokhtar Essassi ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Phenyl Ring ◽  
Ring System ◽  
Membered Ring ◽  
Dihedral Angles ◽  
Compound C ◽  
Fused Ring ◽  
The Mean ◽  
Fused Ring System

In the title compound, C16H14BrN3O2, the fused-ring system is essentially planar, with the largest deviation from the mean plane being 0.0216 (15) Å for the substituted N atom of the five-membered ring, the plane of which makes dihedral angles of 28.50 (7) and 77.48 (7)° with the terminal phenyl ring and the ethoxycarbonylmethyl group mean planes, respectively. In the crystal, C—H...N hydrogen bonds link the molecules into inversion dimers. These combine with weak C—H...N contacts to stack the molecules into columns along theb-axis direction.

scholarly journals 1-Octylindoline-2,3-dione

2013 ◽  
Vol 69 (12) ◽  
pp. o1801-o1801 ◽  
Author(s):  
Fatima-Zahrae Qachchachi ◽  
Youssef Kandri Rodi ◽  
El Mokhtar Essassi ◽  
Werner Kunz ◽  
Lahcen El Ammari
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Ring System ◽  
Compound C ◽  
Dimensional Network ◽  
Fused Ring ◽  
Plane Passing ◽  
The Mean ◽  
Fused Ring System

In the title compound, C16H21NO2, the indoline ring and the two ketone O atoms are approximately coplanar, the largest deviation from the mean plane being 0.063 (2) Å. The mean plane through the fused ring system is nearly perpendicular to the mean plane passing through the 1-octyl chain [dihedral angle = 77.53 (17)°]. In the crystal, molecules are linked by C—H...O hydrogen bonds, forming a three-dimensional network.

scholarly journals N-(1H-Indazol-5-yl)-4-methoxybenzenesulfonamide

2013 ◽  
Vol 69 (11) ◽  
pp. o1702-o1702
Author(s):  
Hakima Chicha ◽  
El Mostapha Rakib ◽  
Latifa Bouissane ◽  
Mohamed Saadi ◽  
Lahcen El Ammari
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Ring System ◽  
Two Dimensional ◽  
Compound C ◽  
Dimensional Network ◽  
Fused Ring ◽  
The Mean ◽  
Fused Ring System

In the title compound, C14H13N3O3S, the fused ring system is almost planar, the largest deviation from the mean plane being 0.023 (2) Å, and makes a dihedral angle of 47.92 (10)° with the benzene ring of the benzenesulfonamide moiety. In the crystal, molecules are connected through N—H...O hydrogen bonds and weak C—H...O contacts, forming a two-dimensional network which is parallel to (010).

scholarly journals 2-[(2Z)-2-Benzylidene-3-oxo-3,4-dihydro-2H-1,4-benzothiazin-4-yl]acetic acid

IUCrData ◽  
2016 ◽  
Vol 1 (6) ◽  
Author(s):  
Nada Kheira Sebbar ◽  
Mohamed Ellouz ◽  
Joel T. Mague ◽  
Younes Ouzidan ◽  
El Mokhtar Essassi ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Ring System ◽  
Boat Conformation ◽  
Compound C ◽  
Fused Ring ◽  
Thiazine Ring ◽  
The Mean ◽  
Fused Ring System

In the title compound, C17H13NO3S, the thiazine ring displays a screw-boat conformation. The dihedral angle between the terminal benzene ring and the mean plane of the 1,4-benzothiazine fused-ring system is 51.52 (6)°. In the crystal, inversion dimers linked by pairs of O—H...Ot(t = thiazine) hydrogen bonds generateR22(14) loops. The dimers are linked by pairwise C—H...O hydrogen bonds, resulting in [010] chains.

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