ABSTRACT
In the title compound, C18H12F4N2S2, a bis-thio-phenyl Schiff base ligand with a perifluorinated aromatic core, the complete molecule is generated by crystallographic inversion symmetry. The thio-phene and tetra-fluorinated benzene rings are oriented at a dihedral angle of 77.38â (4)°. The crystal structure exhibits C-Hâ¯F hydrogen bonds, resulting in supra-molecular chains along the c-axis direction.
ABSTRACT
The title compound, C20H16F4N2S2, is a flexible bis-thio-phene-type Schiff base ligand with a perfluorinated backbone. The terminal thio-phene rings are almost normal to one another with a dihedral angle of 83.8â (2)°, and they are tilted to the central tetra-fluorinated benzene ring with dihedral angles of 61.2â (2) and 77.7â (1)°. In the crystal, there are π-π inter-actions involving the benzene ring and the thiophene ring of a symmetry-related molecule with a centroid-centroid separation of 3.699â (3)â Å.