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The title compound, C32H21N4·C2H5OH, crystallized as an ethanol monosolvate. In the mol­ecule of this phenanthroline derivative, the pyridine rings are almost coplanar, making a dihedral angle of 1.54 (13)°. The tri­phenyl­amine group, introduced as an electron donor, shows a propeller-type structure, and the dihedral angles between the benzene rings are 68.71 11), 63.92 (16) and 70.81 (15)°. In the crystal, the phenanthroline mol­ecules are linked via the solvent mol­ecule by N—H...O, O—H...N and C—H...O hydrogen bonds, leading to the formation of zigzag chains propagating along [010]. These chains are linked via C—H...N hydrogen bonds, forming undulating two-dimensional networks extending in the a- and b-axis directions.

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There are two independent mol­ecules in the asymmetric unit of the title mol­ecule, C8H9N3S2, both of which exhibit an E conformation with the pyridine ring and di­thio­carbazate fragment located on opposite sides of the C=N bond. The pyridine ring and di­thio­carbazate group are approximately coplanar, with dihedral angles of 4.74 (1) and 8.77 (1)° between their planes in the two mol­ecules. In the crystal, mol­ecules are linked to each other via N—H...N hydrogen bonds, forming zigzag chains parallel to [10-1].
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