Search

The title compound, C20H12Br2N2, was prepared by the reaction of 1-(3-bromophenyl)-2-(4-bromophenyl)ethane-1,2-dione with o-phenylenediamine in refluxing ethanol. In the molecule, all bond lengths and angles are within normal ranges. The dihedral angle between the two benzene rings is 34.89 (1)°. The dihedral angles between the benzene rings and the quinoxaline system are 57.23 (1) and 36.75 (1)°. The crystal packing is stabilized by van der Waals forces.

The title compound, C12H13NO2S, was prepared by the reaction of acetyl­acetone with phenyl isothio­cyanate. In addition to the intra­molecular O—H⋯O hydrogen bond, there is a weak inter­molecular N—H⋯S hydrogen bond, which links the mol­ecules into chains extended along the c axis. The crystal packing is further stabilized by van der Waals forces. [ABSTRACT FROM AUTHOR]

The title compound, C20H14C12N2, was prepared by reaction of o-phenylenediamine with 2-chlorobenzaldehyde under reflux in ethanol. The crystal structure is stabilized by van der Waals interactions. [ABSTRACT FROM AUTHOR]

In the title compound, C13H11N3OS2, the dihedral angles between the planes of the triazole and phenyl rings and that through the four NC3 atoms of the C=C are 76. (1) and 57.6 (1)°, respectively. There are some intermolec­ular interactions in the crystal structure. [ABSTRACT FROM AUTHOR]