title: catena-Poly[[silver(I)-μ-4,4'-bipyridine-κ(2)N:N'] 4-[2-(4-carb-oxy-phen-yl)-1,1,1,3,3,3-hexa-fluoro-propan-2-yl]benzoate].
abstract: Assembly of the flexible dicarb-oxy-lic ligand 4-[2-(4-carboxyphenyl)-1,1,1,3,3,3-hexafluoropropan-2-yl]benzoate and 4,4'-bipyridine as co-ligand with Ag(I) ions resulted in the formation of the polymeric title compound, {[Ag(C(10)H(8)N(2))](C(17)H(9)F(6)O(4))}(n), in which the metal atoms are bridged by the 4,4'-bipyridine ligands, generating cationic chains extending along [010]. The dihedral angles between the benzene rings in the anion and the pyridine rings in the cation are 72.42 (9) and 9.36 (10)°, respectively. The mol-ecular conformation of the anion is stabilized by intra-molecular C-H⋯F hydrogen bonds. In the crystal, the anions inter-act with the cationic chains via C-H⋯O hydrogen bonds, forming layers parallel to (001), in which weak π-π stacking inter-actions [centroid-centroid distances = 3.975 (3)-4.047 (3) Å] involving the pyridine rings of adjacent 4,4'-bipyridine ligands are present. The planes are further assembled into a three-dimensional network by O-H⋯O hydrogen bonds.
authors.affiliation: College of Biological, Chemical Sciences and Engineering, Jiaxing University, Zhejiang Jiaxing 314001,  People's Republic of China.
authors.forename: Xiu-Juan
authors.initials: XJ
authors.lastname: Jiang