title: 2,3,5,6-Tetra-fluoro-1,4-bis-({[(5-methyl-thio-phen-2-yl)methyl-idene]amino}-meth-yl)benzene.
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 83.8 (2)°, and they are tilted to the central tetra-fluorinated benzene ring with dihedral angles of 61.2 (2) and 77.7 (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 3.699 (3) Å.
authors.affiliation: School of Petrochemical Engineering, Changzhou University, Changzhou 213164, People's Republic of China.
authors.forename: Hai-Kun
authors.initials: HK
authors.lastname: Luo
authors.affiliation: School of Petrochemical Engineering, Changzhou University, Changzhou 213164, People's Republic of China.
authors.forename: Rui-Rui
authors.initials: RR
authors.lastname: Qin
authors.affiliation: School of Petrochemical Engineering, Changzhou University, Changzhou 213164, People's Republic of China.
authors.forename: Ming-Yang
authors.initials: MY
authors.lastname: He