scholarly journals 3-Methyl-1-benzofuran-2-carbohydrazide

2012 ◽  
Vol 68 (4) ◽  
pp. o1255-o1256 ◽  
Author(s):  
Hatem A. Abdel-Aziz ◽  
Hazem A. Ghabbour ◽  
Suchada Chantrapromma ◽  
Hoong-Kun Fun
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Three Dimensional ◽  
Ring System ◽  
The Other ◽  
Dihedral Angles ◽  
Asymmetric Unit ◽  
Benzofuran Derivative ◽  
Dimensional Network ◽  
Independent Molecules

In the asymmetric unit of the title benzofuran derivative, C10H10N2O2, there are three crystallograpically independent molecules, which are slightly twisted; the dihedral angle between the benzofuran ring system and the plane of the carbohydrazide unit is 8.64 (11)° in one molecule, whereas the dihedral angles are 9.58 (11) and 6.89 (10)° in the other two molecules. In the crystal, the three independent molecules are linked to each other through N—H...N hydrogen bonds, forming a trimer. The trimers are further linked by weak N—H...O and C—H...O hydrogen bonds into a three-dimensional network. π–π interactions with centroid–centroid distances in the range 3.4928 (11)–3.8561 (10) Å are also observed.

scholarly journals 1-(6-Fluoro-1,3-benzothiazol-2-yl)-2-(1-phenylethylidene)hydrazine

2012 ◽  
Vol 68 (8) ◽  
pp. o2438-o2439 ◽  
Author(s):  
Hoong-Kun Fun ◽  
Ching Kheng Quah ◽  
D. Munirajasekhar ◽  
M. Himaja ◽  
B. K. Sarojini
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Phenyl Ring ◽  
Three Dimensional ◽  
Ring System ◽  
The Other ◽  
Asymmetric Unit ◽  
Compound C ◽  
Dimensional Network ◽  
Independent Molecules

The asymmetric unit of the title compound, C15H12FN3S, consists of two independent molecules with comparable geometries. In one molecule, the 1,3-benzothiazole ring system (r.m.s. deviation = 0.011 Å) forms a dihedral angle of 19.86 (6)° with the phenyl ring. The corresponding r.m.s. deviation and dihedral angle for the other molecule are 0.014 Å and 22.32 (6)°, respectively. In the crystal, molecules are linkedviaN—H...N, C—H...F and C—H...N hydrogen bonds into a three-dimensional network. The crystal studied was a non-merohedral twin with a refined BASF value of 0.301 (2).

scholarly journals N-(1-Allyl-1H-indazol-5-yl)-4-methylbenzenesulfonamide

2013 ◽  
Vol 69 (12) ◽  
pp. o1847-o1847
Author(s):  
Hakima Chicha ◽  
El Mostapha Rakib ◽  
Hafid Abderrafia ◽  
Mohamed Saadi ◽  
Lahcen El Ammari
Keyword(s):  
Dihedral Angle ◽  
Three Dimensional ◽  
Ring System ◽  
Membered Ring ◽  
The Other ◽  
Dihedral Angles ◽  
Asymmetric Unit ◽  
Compound C ◽  
Dimensional Network ◽  
Independent Molecules

The asymmetric unit of the title compound, C17H17N3O2S, contains two independent molecules linked by an N—H...O hydrogen bond. The molecules show different conformations. In the first molecule, the fused five- and six-membered ring system is almost perpendicular to the plane through the atoms forming the allyl group, as indicated by the dihedral angle of 85.1 (4)°. The dihedral angle with the methylbenzenesulfonamide group is 78.8 (1)°. On the other hand, in the second molecule, the dihedral angles between the indazole plane and the allyl and methylbenzenesulfonamide groups are 80.3 (3) and 41.5 (1)°, respectively. In the crystal, molecules are further linked by N—H...N and C—H...O hydrogen bonds, forming a three-dimensional network.

scholarly journals 1-[(3-Benzyloxy-2-nitrophenoxy)methyl]benzene

2012 ◽  
Vol 68 (8) ◽  
pp. o2317-o2318
Author(s):  
Hoong-Kun Fun ◽  
Suhana Arshad ◽  
S. R. Ubaradka ◽  
Prakash Shetty ◽  
Arun M. Isloor
Keyword(s):  
Hydrogen Bonds ◽  
Three Dimensional ◽  
The Other ◽  
Dihedral Angles ◽  
Asymmetric Unit ◽  
Compound C ◽  
Dimensional Network ◽  
Benzene Rings ◽  
Independent Molecules ◽  
Methyl Benzene

The asymmetric unit of the title compound, C20H17NO4, consists of two crystallographically independent molecules. In one of the molecules, the central benzene ring forms dihedral angles of 2.26 (6) and 58.68 (6)° with the terminal benzene rings and the dihedral angle between the terminal benzene rings is 56.45 (6)°. The corresponding values for the other molecule are 35.17 (6), 70.97 (6) and 69.62 (6)°, respectively. In the crystal, an inversion dimer linked by a pair of C—H...O hydrogen bonds occurs for one of the unique molecules. C—H...π and π–π [centroid–centroid distances = 3.7113 (8) and 3.7216 (7) Å] interactions link the components into a three-dimensional network.

scholarly journals 2-(1,3-Benzodioxol-5-yl)-1H-benzimidazole

2014 ◽  
Vol 70 (2) ◽  
pp. o157-o157
Author(s):  
Nadir Ghichi ◽  
Mohamed Amine Benaouida ◽  
Ali Benosmane ◽  
Ali Benboudiaf ◽  
Hocine Merazig
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Ring System ◽  
The Other ◽  
Dihedral Angles ◽  
Asymmetric Unit ◽  
Compound C ◽  
The Mean ◽  
Independent Molecules

The asymmetric unit of the title compound, C14H10N2O2, contains two independent molecules. In each molecule, the benzodioxole ring system displays an envelope conformation, with the methylene C atom located at the flap deviating by 0.081 (2) and 0.230 (2) Å from the mean plane formed by the other atoms. The dihedral angles between the benzoimidazole ring system (all atoms) and the benzodioxole benzene ring are 15.35 (6) and 10.99 (7)°. In the crystal, molecules are linked by N—H...N hydrogen bonds into chains running along the [101].

scholarly journals (3aR*,8bR*)-3a,8b-Dihydroxy-1-(4-methylphenyl)-2-methylsulfanyl-3-nitro-1,8b-dihydroindeno[1,2-b]pyrrol-4(3aH)-one

2014 ◽  
Vol 70 (3) ◽  
pp. o279-o280
Author(s):  
R. A. Nagalakshmi ◽  
J. Suresh ◽  
R. Ranjith Kumar ◽  
V. Jeyachandran ◽  
P. L. Nilantha Lakshman
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Dihedral Angles ◽  
Asymmetric Unit ◽  
Compound C ◽  
Dimensional Network ◽  
Independent Molecules ◽  
Hydroxy Groups

The asymmetric unit of the title compound, C19H16N2O5S, contains four independent molecules (A,B,CandD), with two molecules (BandD) displaying disorder in their methylsulfanyl groups [occupancy ratios of 0.797 (11):0.203 (11) and 0.85 (2):0.15 (2)]. The nitro groups are twisted slightly out of the planes of the 2-pyrroline rings to which they are bonded with dihedral angles of 10.17 (1), 8.01 (1), 9.44 (1) and 8.87 (1)° in moleculesA,B,CandD, respectively. The 2-pyrroline rings are almost orthogonal to the attached tolyl rings, forming dihedral angles of 73.44 (1), 81.21 (1), 88.18 (8) and 73.94 (1)° for moleculesA,B,CandD, respectively. A weak intramolecular O—H...O interaction is observed in moleculesBandC. The two hydroxy groups in each molecule are involved in intermolecular O—H...O hydrogen bonding. In the crystal, molecules are connectedviaO—H...O and C—H...O hydrogen bonds, forming a complex three-dimensional network.

scholarly journals 2-(Pyridin-2-yl)-1,8-naphthyridine

IUCrData ◽  
2017 ◽  
Vol 2 (8) ◽  
Author(s):  
Ryosuke Abe ◽  
Tsugiko Takase ◽  
Dai Oyama
Keyword(s):  
Title Compound ◽  
Three Dimensional ◽  
Ring System ◽  
Dihedral Angles ◽  
Asymmetric Unit ◽  
Compound C ◽  
Π Stacking ◽  
Dimensional Network ◽  
Pyridine Group ◽  
Independent Molecules

The title compound, C13H9N3, has three symmetry-independent molecules in the asymmetric unit. The dihedral angles between the naphthyridine ring system and the pyridine group are in the range 3.927 (4)–7.362 (4)°. In the crystal, C—H...N interactions and aromatic π–π stacking [centroid–centroid distances = 3.5755 (7) and 3.6544 (7) Å] generate a three-dimensional network.

scholarly journals Crystal structure of 5-(1-benzofuran-2-yl)-3-(4-methylphenyl)-4,5-dihydro-1,2-oxazol-5-ol

2015 ◽  
Vol 71 (7) ◽  
pp. o492-o493
Author(s):  
A. J. Ravi ◽  
A. C. Vinayaka ◽  
S. Jeyaseelan ◽  
M. P. Sadashiva ◽  
H. C. Devarajegowda
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Ring System ◽  
The Other ◽  
Dihedral Angles ◽  
Compound C ◽  
Dimensional Network ◽  
The Mean

In the title compound, C18H15NO3, the isoxazole moiety adopts a shallow envelope conformation, with the C atom bearing the OH group displaced by 0.148 (1) Å from the mean plane through the other four atoms. The mean plane of this ring (all atoms) subtends dihedral angles of 87.19 (6) and 15.51 (7)° with the benzofuran ring system (r.m.s. deviation = 0.007 Å) and the 4-methylphenyl ring, respectively. In the crystal, molecules are linked by O—H...N hydrogen bonds, generating [001]C(5) chains, with adjacent molecules in the chain related byc-glide symmetry. Weak C—H...O interactions link the chains into a three-dimensional network.

scholarly journals Crystal structure of (E)-4-{1-[2-(carbamothioyl)hydrazin-1-ylidene]ethyl}phenyl 4-methylbenzoate

2015 ◽  
Vol 71 (1) ◽  
pp. o43-o44 ◽  
Author(s):  
Karthik Ananth Mani ◽  
Vijayan Viswanathan ◽  
S. Narasimhan ◽  
Devadasan Velmurugan
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Dihedral Angles ◽  
Asymmetric Unit ◽  
Compound C ◽  
Dimensional Network ◽  
Independent Molecules

The asymmetric unit of the title compound, C17H17N3O2S, consists of two independent molecules,AandB, with different conformations: in moleculeA, the dihedral angles between the central benzene ring and the pendant tolyl and carbamothioylhydrazono groups are 71.12 (9) and 5.95 (8)°, respectively. The corresponding angles in moleculeBare 50.56 (12) and 26.43 (11)°, respectively. Both molecules feature an intramolecular N—H...N hydrogen bond, which closes anS(5) ring. In the crystal, molecules are linked by N—H...O, N—H...S and C—H...O hydrogen bonds, generating a three-dimensional network.

scholarly journals Bis[3-methyl-5-(pyridin-2-yl)-1H-pyrazol-4-yl] selenide methanol hemisolvate

2014 ◽  
Vol 70 (2) ◽  
pp. o127-o128
Author(s):  
Maksym Seredyuk ◽  
Natalia O. Sharkina ◽  
Elzbieta Gumienna-Kontecka ◽  
Anatoly A. Kapshuk
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
The Other ◽  
Dihedral Angles ◽  
Supramolecular Architecture ◽  
Asymmetric Unit ◽  
Compound C ◽  
Independent Molecules ◽  
Solvent Molecules

The asymmetric unit of the title compound, C18H16N6Se·0.5CH3OH, contains two independent molecules of bis[3-methyl-5-(pyridin-2-yl)-1H-pyrazol-4-yl] selenide with similar C—Se—C bond angles [99.30 (14) and 98.26 (13)°], and a methanol molecule of solvation. In one molecule, the dihedral angles between pyrazole and neighbouring pyridine rings are 18.3 (2) and 15.8 (2)°, and the corresponding angles in the other molecule are 13.5 (2) and 8.3 (2)°. In the crystal, the selenide and solvent molecules are linked by classical O—H...N and N—H...N hydrogen bonds, as well as by weak C—H...O and C—H...π interactions, forming a three-dimensional supramolecular architecture.

scholarly journals 3-[2-(4-Fluorophenyl)-2-oxoethyl]-5,5-diphenylimidazolidine-2,4-dione

2014 ◽  
Vol 70 (2) ◽  
pp. o226-o227 ◽  
Author(s):  
Joel T. Mague ◽  
Alaa A.-M. Abdel-Aziz ◽  
Adel S. El-Azab
Keyword(s):  
Hydrogen Bonds ◽  
Three Dimensional ◽  
The Other ◽  
Side Chain ◽  
Dihedral Angles ◽  
Supramolecular Architecture ◽  
Asymmetric Unit ◽  
Compound C ◽  
Phenyl Rings ◽  
Independent Molecules

The title compound, C23H17FN2O3, crystallizes with two independent molecules in the asymmetric unit. The molecules are connected by pairs of N—H...O hydrogen bonds and have slightly different conformations, as indicated by the dihedral angles between the central imidazolidine-2,4-dione ring and its three substituents. In one molecule, these are 60.56 (1) and 82.66 (9)° to the phenyl rings and 84.35 (16)° to the 2-(4-fluorophenyl)-2-oxoethyl side chain. In the other molecule, the corresponding angles are 66.35 (10), 84.94 (9) and 86.31 (16)°. In the crystal, weak C—H...O interactions leading to a three-dimensional supramolecular architecture.

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