Two new silver(I) coordination polymers with 4,4′-bipyridine and two perfluoro-β-diketonates

Two coordination polymers (CPs) based on a Ag-I/perfluoro-beta-diketonate/N-donor ligand, [Ag(4,4'-bpy)(hfa)](n), (1) and [Ag(4,4'-bpy)(ttfa)](n) (2), where 4,4'-bpy is 4,4'-bipyridine, Hhfa is hexafluoroacetylacetone, and Httfa is thenoyltrifluoracetylacetone, were prepared and characterized by elemental analysis, IR and H-1 NMR spectroscopy as well as X-ray crystallography and electrochemical properties were studied. The complexes display 1D CPs structurally quite similar to another. The adjacent chains are further inter-linked via Ag center dot center dot center dot Ag, Ag center dot center dot center dot O contacts to generate 1D ladder (double chains) structures. Abundant weak interactions, such as pi-pi, C-H center dot center dot center dot F, C-H center dot center dot center dot O and F center dot center dot center dot F interactions, provide additional assembly forces, leading to 3D supramolecular networks for 1 and 2. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.