2,3,5,6-Tetrafluoro-1,4-bis({[(thiophen-2-yl)methylidene]amino}methyl)benzene

In the title compound, C₁₈H₁₂F₄N₂S₂, a bis-thio­phenyl Schiff base ligand with a perifluorinated aromatic core, the complete molecule is generated by crystallographic inversion symmetry. The thio­phene and tetra­fluorinated benzene rings are oriented at a dihedral angle of 77.38 (4)°. The crystal structure exhibits C—H⋯F hydrogen bonds, resulting in supra­molecular chains along the c-axis direction.

2,3,5,6-Tetra-fluoro-1,4-bis-({[(5-methyl-thio-phen-2-yl)methyl-idene]amino}-meth-yl)benzene

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.

Bis(ethyl 2-amino-4-thia-zoleacetato-κN)silver(I) nitrate

In the title complex, [Ag(C₇H₁₀N₂O₂S)₂]NO₃, the Ag^I cation is bicoordinated in an almost linear configuration by two N-donor atoms of the thia­zole rings of two distinct ethyl 2-amino-4-thia­zoleacetate (EATA) ligands. The dihedral angle between the two thia­zole rings is 49.9°. A weak Ag⋯O (2.729 Å) inter­action between the Ag cation and one of the O atoms from the nitrate anion is observed, and a pseudo-dimer is formed through a weak Ag⋯S (3.490 Å) inter­action between the Ag cation and the S atom of the thia­zole ring of a symmetry-related mol­ecule. In the crystal structure, there are intra- and inter­molecular N—H⋯O hydrogen bonds. The occurrence of inter­molecular N—H⋯O hydrogen bonds results in the formation of two-dimensional sheets parallel to (010), which are further linked into a three-dimensional network through weak C—H⋯O inter­actions.