scholarly journals (4S)-5′-Chloro-3,7,7-trimethyl-5,6,7,8-tetrahydro-4H-spiro[1,2-oxazolo[5,4-b]quinoline-4,3′-indole]-2′,5-dione

2014 ◽  
Vol 70 (2) ◽  
pp. o173-o173
Author(s):  
E. Govindan ◽  
PanneerSelvam Yuvaraj ◽  
Boreddy Siva Rami Reddy ◽  
K. Premalatha ◽  
A. SubbiahPandi
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Ring System ◽  
Axis Direction ◽  
Envelope Conformation ◽  
Compound C ◽  
Cyclohexene Ring

In the title compound, C20H18ClN3O3, the five- and six-membered heterocycles fused through a spiro C atom are inclined to each other at an angle of 87.4 (1)°. In the tricyclic ring system, the cyclohexene ring adopts an envelope conformation with the spiro atom as the flap. In the crystal, two sets of N—H...O hydrogen bonds link the molecules into columns containing centrosymmetricR22(7) ring motifs and propagating along theb-axis direction.

scholarly journals (4S)-3-Methyl-5,6,7,8-tetrahydro-4H-spiro[[1,2]oxazolo[5,4-b]quinoline-4,3′-indole]-2′,5-dione

2014 ◽  
Vol 70 (2) ◽  
pp. o168-o168 ◽  
Author(s):  
E. Govindan ◽  
P. S. Yuvaraj ◽  
B. S. R. Reddy ◽  
S. Bangaru Sudarsan Alwar ◽  
A. SubbiahPandi
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Quinoline Ring ◽  
Indole Ring ◽  
Envelope Conformation ◽  
Compound C ◽  
Cyclohexene Ring ◽  
The Mean

In the title compound, C18H15N3O3, the dihedral angle between the mean planes of the quinoline and indole ring systems [r.m.s. deviations = 0.189 (2) and 0.027 (2) Å, respectively] is 88.65 (5)°. The cyclohexene ring of the quinoline ring system adopts an envelope conformation with the central –CH2– C atom as the flap. In the crystal, molecules are linked by two pairs of N—H...O hydrogen bonds, forming inversion dimers, and enclosingR22(14) ring motifs. This arrangement results in the formation of chains propagating along [100].

scholarly journals 3-[(E)-2-(2-Methoxyphenyl)vinyl]-5,5-dimethylcyclohex-2-enone

2014 ◽  
Vol 70 (5) ◽  
pp. o509-o509 ◽  
Author(s):  
Zeenat Fatima ◽  
Govindaraj Senthilkumar ◽  
A. Vadivel ◽  
Haridoss Manikandan ◽  
Devadasan Velmurugan
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Axis Direction ◽  
Envelope Conformation ◽  
Compound C ◽  
Cyclohexene Ring

The title compound, C17H20O2, has anEconformation about the bridging C=C bond. The cyclohexene ring adopts an envelope conformation with the dimethyl-substituted C atom as the flap. Its mean plane makes a dihedral angle of 7.20 (12)° with the benzene ring. In the crystal, neighbouring molecules are connectedviaC—H...O hydrogen bonds, forming chains running along thea-axis direction.

scholarly journals 3,4-Dihydro-2H-benzo[4,5]imidazo[2,1-b][1,3]thiazin-3-ol

IUCrData ◽  
2017 ◽  
Vol 2 (3) ◽  
Author(s):  
Latifa El Ouasif ◽  
Mostafa El Ghoul ◽  
Redouane Achour ◽  
Mohamed Saadi ◽  
Lahcen El Ammari
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Ring System ◽  
Benzimidazole Ring ◽  
Axis Direction ◽  
Π Interactions ◽  
Envelope Conformation ◽  
Compound C ◽  
Thiazine Ring

In the title compound, C10H10N2OS, the benzimidazole ring system is almost planar (r.m.s. deviation = 0.007 Å), whereas the heterocyclic six-membered thiazine ring has an envelope conformation, with the hydroxy-substituted C atom as the flap. In the crystal, molecules are linked by O—H...N hydrogen bonds to form zigzag chains running along the b-axis direction. The chains are linked by C—H...O hydrogen bonds and C—H...π interactions, forming layers parallel to the bc plane.

scholarly journals {(3S,5R)-5-(2,4-Difluorophenyl)-5-[(1H-1,2,4-triazol-1-yl)methyl]tetrahydrofuran-3-yl}methyl 4-methylbenzenesulfonate

IUCrData ◽  
2017 ◽  
Vol 2 (2) ◽  
Author(s):  
Qing-Shuang Ma ◽  
Xiao-Guang Wang ◽  
Lei Xu ◽  
Sun Bin ◽  
Dao-Hong Xia ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Three Dimensional Structure ◽  
Axis Direction ◽  
Envelope Conformation ◽  
Compound C ◽  
Best Fit

In the title compound, C21H21F2N3O4S, the tetrahydrofuran ring adopts an envelope conformation with the β-C atom positioned at the flap. The triazole, difluorophenyl and tolyl rings of the various substituents on the tetrahydrofuran ring are inclined at 77.88 (12), 83.81 (10) and 81.00 (10)°, respectively, to the best-fit mean plane through the five atoms of the tetrahydrofuran ring. In the crystal, weak C—H...O and C—H...F hydrogen bonds link the molecules into a three-dimensional structure, with molecules stacked along thea-axis direction.

scholarly journals tert-Butyl (2S,3R,4R)-7′-bromo-4-methyl-2′,5-dioxo-4,5-dihydro-3H-spiro[furan-2,3′-indoline]-3-carboxylate

IUCrData ◽  
2017 ◽  
Vol 2 (3) ◽  
Author(s):  
Chen-Hong Meng ◽  
Ai-Bao Xia
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Furan Ring ◽  
Axis Direction ◽  
Tert Butyl ◽  
Envelope Conformation ◽  
Compound C ◽  
The Mean

In the title compound, C17H18BrNO5, the furan ring has an envelope conformation with the carboxylate substituted C atom as the flap. The planar indoline ring is inclined to the mean plane of the furan ring by 87.5 (2)°. In the crystal, molecules are linked by N—H...O and C—H...O hydrogen bonds forming chains propagating along the a-axis direction.

scholarly journals Crystal structure of tetraethyl 27,30-dioxo-7,12,20,25-tetra-tert-butyl-3,16-dioxa-9,22,28,31-tetrathiaheptacyclo[21.3.1.11,5.14,8.110,14.114,18.117,21]dotriaconta-4,6,8(29),10,12,17,19,21(32),23,25-decaene-2,2,15,15-tetracarboxylate

2015 ◽  
Vol 71 (10) ◽  
pp. o778-o779
Author(s):  
Mehmet Akkurt ◽  
Jerry P. Jasinski ◽  
Shaaban K. Mohamed ◽  
Omran A. Omran ◽  
Mustafa R. Albayati
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Membered Ring ◽  
Asymmetric Unit ◽  
Axis Direction ◽  
Tert Butyl ◽  
Envelope Conformation ◽  
Compound C ◽  
A Chain

The asymmetric unit of the title compound, C54H64O12S4, consists of one half of the molecule, which is located on an inversion centre. The heterocyclic six-membered ring adopts a distorted envelope conformation with the spiro C atom as the flap. In the crystal, molecules are linked by weak C—H...O hydrogen bonds with anR22(14) motif, forming a chain along theb-axis direction.

scholarly journals Crystal structure of ethyl 1′,1′′-dimethyl-2′′,3-dioxo-3H-dispiro[benzo[b]thiophene-2,3′-pyrrolidine-2′,3′′-indoline]-4′-carboxylate

2015 ◽  
Vol 71 (3) ◽  
pp. o142-o142
Author(s):  
M. P. Savithri ◽  
M. Suresh ◽  
R. Raghunathan ◽  
R. Raja ◽  
A. SubbiahPandi
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Ring System ◽  
Pyrrolidine Ring ◽  
Ring Systems ◽  
Envelope Conformation ◽  
Compound C ◽  
The Mean

In the title compound, C23H22N2O4S, the pyrrolidine ring has an envelope conformation with the spiro C atom, shared with the indoline ring system, as the flap. The mean planes of the benzothiophene and indoline ring systems are inclined to the mean plane of the pyrrolidine ring by 88.81 (8) and 79.48 (8)°, respectively, and to each other by 68.12 (5)°. In the crystal, molecules are linkedviaC—H...O hydrogen bonds, forming chains propagating along [001].

scholarly journals 5′-([1,1′-Biphenyl]-4-yl)-1′,1′′,3′′-trimethyldispiro[indane-2,2′-pyrrolidine-4′,5′′-[1,3]diazinane]-1,3,2′′,4′′,6′′-pentaone

2014 ◽  
Vol 70 (7) ◽  
pp. o759-o759 ◽  
Author(s):  
Subramanyahegde ◽  
Hosamani Amar ◽  
Yellappa Shivaraj ◽  
Giriyapura R. Vijayakumar ◽  
Bandrehalli Siddagangaiah Palakshamurthy
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Heterocyclic Ring ◽  
Ring System ◽  
Dihedral Angles ◽  
Central Ring ◽  
Envelope Conformation ◽  
Compound C ◽  
Benzene Rings

In the title compound, C30H25N3O5, the central five-membered heterocyclic ring adopts an envelope conformation, with the N atom as the flap. The dihedral angles between this central ring and the pendant indane ring system, the trione and benzene rings are 87.49 (5), 82.95 (10) and 72.42 (10)°, respectively. The dihedral angle between the rings of the biphenyl group is 45.99 (13)°. In the crystal, molecules are linked by C—H...O hydrogen bonds into [101]C(12) chains.

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

IUCrData ◽  
2017 ◽  
Vol 2 (7) ◽  
Author(s):  
Selma Bourichi ◽  
Youssef Kandri Rodi ◽  
Jerry P. Jasinski ◽  
Manpreet Kaur ◽  
El Mestafa El Hadrami ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Pyridine Ring ◽  
Crystal Packing ◽  
Ring System ◽  
Stacking Interactions ◽  
Axis Direction ◽  
Compound C ◽  
The Mean

In the title compound, C14H12BrN3O, the dihedral angle between the mean planes of the imidazo[4,5-b]pyridine ring system and the methoxyphenyl ring is 41.53 (12)°. In the crystal, weak C—H...N hydrogen bonds link the molecules into chains along the c-axis direction. Weak π–π stacking interactions involving the imidazole and the methoxyphenyl rings further stabilize the crystal packing.

scholarly journals 5,7-Dibromo-8-methoxyquinoline

IUCrData ◽  
2017 ◽  
Vol 2 (5) ◽  
Author(s):  
Ísmail Çelik ◽  
Salih Ökten ◽  
Mehmet Akkurt ◽  
Cem Cüneyt Ersanlı ◽  
Osman Çakmak ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Ring System ◽  
Stacking Interactions ◽  
Quinoline Ring ◽  
Axis Direction ◽  
Compound C ◽  
Π Stacking ◽  
Centroid Distance

In the title compound, C10H7Br2NO, the methoxy C atom deviates from the quinoline ring system (r.m.s deviation = 0.003 Å) by 1.204 (4) Å. In the crystal, C—H...O hydrogen bonds link the molecules into infinite chains along theb-axis direction. Aromatic π–π stacking interactions [centroid-to-centroid distance = 3.7659 (19) Å] are also observed.

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