scholarly journals 2,7-Bis(2-nitrophenyl)-9-octyl-9H-carbazole

2012 ◽  
Vol 68 (4) ◽  
pp. o1249-o1249
Author(s):  
Norma Wrobel ◽  
Dieter Schollmeyer ◽  
Heiner Detert
Keyword(s):  
Least Squares ◽  
Title Compound ◽  
Suzuki Coupling ◽  
Ring System ◽  
Dihedral Angles ◽  
Maximum Deviation ◽  
Screw Axis ◽  
Compound C ◽  
Benzene Rings

The title compound, C32H31N3O4, was obtained in a Suzuki coupling of carbazole diboronic acid and bromonitrobenzene. In the crystal, the molecule adopts a non-symmetric conformation. The carbazole ring system is approximately planar [maximum deviation from the least-squares plane = 0.039 (2) Å]. The planes of the carbazole unit and the benzene rings subtend dihedral angles of 48.42 (7) and 41.81 (6)°. The dihedral angles between the planes of the nitrophenyl rings and the nitro groups are 44.34 (19) and 61.64 (15)°. The crystal is built from two strands of parallel molecules with interdigitated octyl chains. These strands are symmetry related by a twofold screw axis.

scholarly journals 1-[3-(Morpholin-4-yl)propyl]-4-(3-nitrophenyl)spiro[azetidine-3,9′-xanthen]-2-one

2014 ◽  
Vol 70 (3) ◽  
pp. o369-o370 ◽  
Author(s):  
Ísmail Çelik ◽  
Mehmet Akkurt ◽  
Aliasghar Jarrahpour ◽  
Roghayeh Heiran ◽  
Namık Özdemir
Keyword(s):  
Hydrogen Bond ◽  
Least Squares ◽  
Benzene Ring ◽  
Title Compound ◽  
Chair Conformation ◽  
Ring System ◽  
Dihedral Angles ◽  
Maximum Deviation ◽  
Compound C ◽  
Morpholine Ring

The β-lactam (azetidin-2-one) ring of the title compound, C28H27N3O5, is nearly planar [maximum deviation = 0.010 (1) Å] and makes dihedral angles of 75.77 (5), 52.78 (9) and 88.72 (5)°, respectively, with the benzene ring, the least-squares plane formed by the four C atoms of the morpholine ring, which adopts a chair conformation, and the xanthene ring system. In the crystal, C—H...O hydrogen-bond contacts connect neighbouring molecules into infinite zigzag chains running parallel to thebaxis.

scholarly journals Ethyl 2-(4-chlorophenyl)-1-phenyl-1H-benzimidazole-5-carboxylate

2012 ◽  
Vol 68 (6) ◽  
pp. o1863-o1863 ◽  
Author(s):  
Yeong Keng Yoon ◽  
Elumalai Manogaran ◽  
Tan Soo Choon ◽  
Suhana Arshad ◽  
Ibrahim Abdul Razak
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Dihedral Angles ◽  
Maximum Deviation ◽  
Zigzag Chain ◽  
Benzimidazole Ring ◽  
Compound C ◽  
Benzene Rings

In the title compound, C22H17ClN2O2, the essentially planar benzimidazole ring system [maximum deviation = 0.012 (2) Å] forms dihedral angles of 28.69 (6) and 63.65 (7)°, respectively, with the phenyl and chloro-substituted benzene rings. The dihedral angle between the phenyl and benzene rings is 64.23 (8)°. In the crystal, molecules are linked into a zigzag chain along the a axis by intermolecular C—H...O hydrogen bonds. C—H...π interactions are also present.

scholarly journals Ethyl 2-(4-bromophenyl)-1-phenyl-1H-benzimidazole-5-carboxylate

2012 ◽  
Vol 68 (6) ◽  
pp. o1683-o1683 ◽  
Author(s):  
Yeong Keng Yoon ◽  
Mohamed Ashraf Ali ◽  
Tan Soo Choon ◽  
Suhana Arshad ◽  
Ibrahim Abdul Razak
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Ring System ◽  
Dihedral Angles ◽  
Maximum Deviation ◽  
Benzimidazole Ring ◽  
One Dimensional ◽  
Π Interactions ◽  
Compound C ◽  
Benzene Rings

In the title compound, C22H17BrN2O2, the benzimidazole ring system is essentially planar, with a maximum deviation of 0.017 (1) Å, and forms dihedral angles of 27.79 (6) and 64.43 (6)° with the phenyl and bromo-substituted benzene rings, respectively. In the crystal, molecules are linked into one-dimensional chains along the a axis by weak C—H...O hydrogen bonds. Weak intermolecular C—H...π interactions are also present.

scholarly journals 1-(Morpholin-4-yl)-4-(2-nitrophenyl)spiro[azetidine-3,9′-xanthen]-2-one

2014 ◽  
Vol 70 (7) ◽  
pp. o772-o773
Author(s):  
Zeliha Atioğlu ◽  
Mehmet Akkurt ◽  
Aliasghar Jarrahpour ◽  
Roghayeh Heiran ◽  
Namık Özdemir
Keyword(s):  
Hydrogen Bond ◽  
Least Squares ◽  
Benzene Ring ◽  
Title Compound ◽  
Chair Conformation ◽  
Ring System ◽  
Dihedral Angles ◽  
Maximum Deviation ◽  
Compound C ◽  
Morpholine Ring

In the title compound, C22H21N3O5, the β-lactam (azetidin-2-one) ring is nearly planar [maximum deviation = 0.010 (1) Å] and makes dihedral angles of 69.22 (5), 55.32 (5) and 89.42 (4)° with the least-squares planes formed by the four C atoms of the morpholine ring, which adopts a chair conformation, the benzene ring and the xanthene ring system, respectively. In the crystal, C—H...O hydrogen-bond contacts connect neighbouring molecules into infinite zigzag chains running parallel to thebaxis.

5-(4-Fluorobenzylamino)-3,6-diphenyl-2-thioxo-2,3-dihydro-1,3-thiazolo[4,5-d]pyrimidin-7(6H)-one

2006 ◽  
Vol 62 (5) ◽  
pp. o2062-o2063
Author(s):  
Qian Zhang ◽  
Yuan-Hong Jiao
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal Packing ◽  
Heterocyclic Ring ◽  
Ring System ◽  
Dihedral Angles ◽  
Compound C ◽  
Benzene Rings

In the title compound, C24H17FN4OS2, the three benzene rings are twisted with respect to the fused heterocyclic ring system, with dihedral angles of 76.2 (2), 90.2 (2) and 75.8 (2)°. The crystal packing is influenced by C—H...O, N—H...O and C—H...S hydrogen bonds.

scholarly journals 3-Benzyl-7-(2,4-dichlorophenyl)-4H-1,3,4-thiadiazolo[2,3-c][1,2,4]triazin-4-one

2012 ◽  
Vol 68 (6) ◽  
pp. o1736-o1737
Author(s):  
Hoong-Kun Fun ◽  
Suhana Arshad ◽  
B. K. Sarojini ◽  
U. A. Imran ◽  
B.G. Krishna
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Phenyl Ring ◽  
Ring System ◽  
Dihedral Angles ◽  
Maximum Deviation ◽  
Triazine Ring ◽  
Compound C ◽  
Graph Set

In the title compound, C17H10Cl2N4OS, the phenyl ring and the H atoms attached to the adjacent C atom are disordered over two positions, with refined site occupancies of 0.509 (8) and 0.491 (8). The planar 4H-1,3,4-thiadiazolo[2,3-c][1,2,4]triazine ring system [maximum deviation = 0.048 (3) Å] forms dihedral angles of 76.9 (5), 74.9 (5) and 9.88 (12)°, respectively, with the major and minor parts of the disordered phenyl ring and with the dichloro-substituted benzene ring. In the crystal, pairs of C—H...O hydrogen bonds link the molecules, forming inversion dimers with an R 2 2(18) graph-set motif. A short S...N contact of 2.801 (3) Å is observed between the dimers.

scholarly journals Methyl 3′-benzyl-4′-(2,4-dichlorophenyl)-1′-methyl-2-oxospiro[indoline-3,2′-pyrrolidine]-3′-carboxylate

2014 ◽  
Vol 70 (3) ◽  
pp. o335-o335 ◽  
Author(s):  
S. Karthikeyan ◽  
P. Narayanan ◽  
K. Sethusankar ◽  
Anthonisamy Devaraj ◽  
Manickam Bakthadoss
Keyword(s):  
Molecular Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Ring System ◽  
Maximum Deviation ◽  
Indole Ring ◽  
Compound C ◽  
Centroid Distance ◽  
Benzene Rings ◽  
The Mean

In the title compound, C27H24Cl2N2O3, the indole ring system is essentially planar, with a maximum deviation of 0.082 (2) Å for the carbonyl C atom. It makes a dihedral angle of 88.53 (6)° with the mean plane of the 4-methylpyrrolidine ring, which adopts an envelope conformation with the N atom at the flap position. The molecular structure is stabilized by intramolecular C—H...O hydrogen bonds, which generateS(6) andS(7) ring motifs, and an intramolecular π–π interaction involving the benzyl and dichloro-substituted benzene rings [centroid–centroid distance = 3.6291 (11) Å]. In the crystal, molecules are linkedviaN—H...O hydrogen bonds, formingC(7) chains running parallel to [10-1].

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-Chloro-2-phenyl-3-(2-phenylethynyl)quinoxaline

2012 ◽  
Vol 68 (6) ◽  
pp. o1741-o1741 ◽  
Author(s):  
Xi-Lin Ouyang ◽  
Miao Ouyang ◽  
Shi-Wen Huang
Keyword(s):  
Title Compound ◽  
Phenyl Ring ◽  
Ring System ◽  
Dihedral Angles ◽  
Maximum Deviation ◽  
Π Interactions ◽  
Compound C ◽  
Phenyl Rings ◽  
Quinoxaline Ring

In the title compound, C22H13ClN2, the quinoxaline ring system is close to planar [maximum deviation = 0.061 (2) Å]. The phenyl ring at the 2-position and the phenyl ring of the phenylethynyl substituent make dihedral angles of 49.32 (7) and 11.99 (7) °, respectively, with the quinoxaline mean plane. The two phenyl rings are inclined to one another by 61.27 (9)°. In the crystal, molecules are linked by C—H...π and π–π interactions [centroid–centroid distances = 3.6210 (12) and 3.8091 (12) Å].

scholarly journals 1,4-Dihydroxy-2,3-dinitro-9,10-anthraquinone

IUCrData ◽  
2016 ◽  
Vol 1 (6) ◽  
Author(s):  
Wataru Furukawa ◽  
Munenori Takehara ◽  
Yoshinori Inoue ◽  
Chitoshi Kitamura
Keyword(s):  
Hydrogen Bonds ◽  
Network Structure ◽  
Title Compound ◽  
Three Dimensional ◽  
Ring System ◽  
Dihedral Angles ◽  
Maximum Deviation ◽  
Compound C ◽  
Dimensional Network

In the title compound, C14H6N2O8, the anthraquinone unit is essentially planar [maximum deviation = 0.0645 (10) Å], and there are two intramolecular O–H...O hydrogen bonds formingS(6) motifs. The planes of the two nitro substituents make dihedral angles of 54.77 (8) and 55.60 (3)° with the anthraquinone ring system. In the crystal, molecules are linked by short intermolecular O...O contacts, leading to a three-dimensional network structure.

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