Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Sankappa Rai"'
Publikováno v:
Arabian Journal of Chemistry, Vol 8, Iss 3, Pp 317-321 (2015)
Synthesis and characterization of new heterocyclic pyrazole chalcones (4a–e) and diamide (6a–e) derivatives are described. Pyrazole chalcones were synthesized by the reaction of pyrazole aldehydes and suitable aromatic ketones. Diamides were synt
Externí odkaz:
https://doaj.org/article/20e1446cc1654f81ad4cf08061012861
Publikováno v:
Acta Crystallographica Section E, Vol 67, Iss 10, Pp o2743-o2744 (2011)
In the title compound, C18H13BrN4O3S3, the tetrahydropyridine ring adopts a half-chair conformation with the central methylene-C atom of the NCH2CH2 unit at the flap. The dihedral angles between the tetrahydropyridine ring and the pyridine and two th
Externí odkaz:
https://doaj.org/article/ef1eb5fc517d4c85a86b7b57cf8000a4
Publikováno v:
Acta Crystallographica Section E, Vol 67, Iss 10, Pp o2781-o2782 (2011)
In the title molecule, C25H19N3O3S3, the tetrahydropyridine ring adopts a half-chair conformation. The dihedral angle between the least-squares plane through the tetrahydropyridine ring and two thiophene and two benzene rings are 6.25 (9), 89.49 (9),
Externí odkaz:
https://doaj.org/article/0fa0745a3bb8415ebcf61300d2e58884
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 8, Pp o1913-o1913 (2010)
The asymmetric unit of the title compound, C7H10N2O4S, comprises of two independent molecules (A and B) which differ in the orientation of the methylsulfonyl group [C—S—C—N = 157.98 (13)° in molecule A and 6.09 (18)° in molecule B]. In the cr
Externí odkaz:
https://doaj.org/article/6ca734b25d3d42119975c53aea2bf5f6
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 7, Pp o1869-o1870 (2010)
In the title compound, C20H18Cl2N4O8, the two pyrimidine rings are inclined at dihedral angles of 66.68 (5) and 71.91 (6)° with respect to the central benzene ring. In the crystal structure, intermolecular C—H...N hydrogen bonds link neighbouring
Externí odkaz:
https://doaj.org/article/29cbbbe0012b430b93e41a800c915e8f
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 7, Pp o1871-o1871 (2010)
In the title compound, C20H18Br2N4O8, the interplanar angle of the pyrimidine rings is 75.1 (2)°. The central benzene ring is inclined at interplanar angles of 66.5 (2) and 71.9 (2)° with respect to the two pyrimidine rings. In the crystal structur
Externí odkaz:
https://doaj.org/article/24d7894d4c184e6e87efde8deeba9b4f
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 5, Pp o1196-o1197 (2010)
In the title compound, C14H7Cl2N3O3, the dichlorophenyl and nitrophenyl rings form dihedral angles of 5.4 (2) and 4.0 (2)°, respectively, with the oxadiazole ring. The nitro group is twisted out of the attached benzene ring by a dihedral angle of 10
Externí odkaz:
https://doaj.org/article/c2f94aa74c4d419aadf32656939bafb3
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 4, Pp o772-o772 (2010)
In the title compound, C9H6Cl2N2O, the dihedral angle between the oxadiazole and benzene rings is 1.7 (2)°. In the crystal, the molecules are linked into chains along the b axis by short intermolecular Cl...O contacts [3.019 (3) Å].
Externí odkaz:
https://doaj.org/article/a8731f588b1044e9b64a454803f13701
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 4, Pp o851-o851 (2010)
In the title compound, C14H8Cl2N2O, the dihedral angles between the plane of the oxadiazole ring and those of the benzene rings are 2.3 (1) and 9.5 (1)°. In the crystal, molecules are linked into chains along the c axis by C—H...Cl interactions. T
Externí odkaz:
https://doaj.org/article/26b9ea1e00da4781823938668ebe6565
Publikováno v:
Acta Crystallographica Section E, Vol 65, Iss 8, Pp o1999-o2000 (2009)
The title compound, C12H19IO5, is the orthorhombic polymorph of a previously reported monoclinic form [Krajewski et al. (1987). Bull. Pol. Acad. Sci. Chem. 35, 91–102]. The dihedral angles between the six-membered ring and the two five-membered rin
Externí odkaz:
https://doaj.org/article/5df79926789749ebbdd1b9dc628da9f5