In the title compound, C7H7NO·C6H3N3O7, one of the nitro groups of the picric acid molecule lies in the plane of the attached benzene ring [dihedral angle = 1.4 (1)°] while the other two are twisted away by 9.9 (1) and 30.3 (1)°. In the benzamide molecule, the amide group is almost coplanar with the benzene ring [dihedral angle = 4.4 (1)°]. An intramolecular O—H⋯O hydrogen bond generates an S6 ring motif. In the crystal, molecules are linked into a ribbon-like structure along the b axis by O—H⋯O and N—H⋯O intermolecular hydrogen bonds. In addition, C—H⋯O hydrogen bonds and short O⋯O contacts [2.828 (2) Å] are observed.
In the title compound, C5H7N2
+·C6H2N3O7
−, there are two crystallographically independent cations and anions (A and B) in the asymmetric unit. In both picrate anions, one of the nitro groups lies in the plane of the benzene ring [r.m.s. deviations = 0.014 (2) and 0.014 (2) Å for anions A and B, respectively] and the other two are twisted away by 39.0 (2) and 18.8 (2)° in A, and 18.2 (1) and 2.5 (2)° in B. In the crystal, the cations and anions are linked by intermolecular N—H⋯O and C—H⋯O hydrogen bonds, forming a two-dimensional network.
In the title compound, C15H11N3, the cyclohexene ring adopts a sofa conformation. An intramolecular N—H⋯N hydrogen bond generates an S(7) ring motif. In the crystal, molecules are linked by intermolecular N—H⋯N, C—H⋯N and C—H⋯π interactions into a three-dimensional network.
In the title compound, C16H13N3, the cyclohexene ring adopts a sofa conformation. An intramolecular N—H⋯N hydrogen bond generates an S(7) ring motif. In the crystal, the molecules are linked by pairs of N—H⋯N interactions, forming centrosymmetric dimers with an R
2
2(14) motif.
The complex tris(ethylenediamine)cobalt(III)chloride oxalate trihydrate [Co(en) 3 ] Cl(C 2 O 4 )AE3H 2 O crystallizes in the monoclinic space group C 2 /c with the following unit cell parameters a = 19.9318 (13), b = 9.3344 (4), c = 19.0881 (13) Å b = 96.846(3)°, Z = 8. The crystal structure was solved by direct methods and refined by full matrix least squares procedures to a final R value of 0.0314 for 4330 observed reflections. The reported cobalt complex is six co-ordinated through amine nitrogen with distorted octahedral geometry. There are uncoordinated chloride and oxalate ions along with the water molecules. In-vitro antimicrobial activity was studied against various test organisms and found to be good. From in-vitro cytotoxic activity of the synthesized complex, the IC 50 value was found to be 55.85 lg/ml. ª 2014 Production and hosting by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).
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