Research Article: catena-Poly[[silver(I)-μ-4,4′-bipyridine-κ2N:N′] 4-[2-(4-carb­oxy­phen­yl)-1,1,1,3,3,3-hexa­fluoro­propan-2-yl]benzoate]

Date Published: May 01, 2012

Publisher: International Union of Crystallography

Author(s): Xiu-Juan Jiang.


Assembly of the flexible dicarb­oxy­lic ligand 4-[2-(4-carboxyphenyl)-1,1,1,3,3,3-hexafluoropropan-2-yl]benzoate and 4,4′-bipyridine as co-ligand with AgI ions resulted in the formation of the polymeric title compound, {[Ag(C10H8N2)](C17H9F6O4)}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 mol­ecular conformation of the anion is stabilized by intra­molecular C—H⋯F hydrogen bonds. In the crystal, the anions inter­act with the cationic chains via C—H⋯O hydrogen bonds, forming layers parallel to (001), in which weak π–π stacking inter­actions [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.

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For background to metal-organic frameworks, see: Du et al. (2007 ▶); Li & Du (2011 ▶); Hosseini (2005 ▶). For metallosupra­molecular architectures, see: Brammer (2004 ▶); Peedikakkal & Vittal (2011 ▶). For coordination frameworks constructed from pyridyl and carboxyl­ate spacers, see: Li et al. (2012 ▶). For weak cooperative inter­molecular inter­actions, see: Ye et al. (2005 ▶). For flexible polycarboxyl ligands, see: Liu et al. (2011 ▶). For the structures of metal complexes derived from 4-[2-(4-carboxy­phenyl)-1,1,1,3,3,3-hexafluoropropan-2-yl]benzoate, see: Jiang et al. (2009 ▶); Ji et al. (2010 ▶).