Abstract
The asymmetric unit in the title compound, [Ag(C11H11N3)]PF6·2CH3CN or {[AgL]·PF6·2CH3CN} n , L = N-(pyridin-3-ylmeth-yl)pyridin-3-amine, comprises one AgI atom, one L ligand, two aceto-nitrile solvent mol-ecules and one PF6- anion disordered over two orientations in a 0.567 (11):0.433 (11) ratio. Each AgI atom is coordinated by two pyridine N atoms from two L ligands in a slightly distorted linear coordination geometry [N-Ag-N = 170.55 (8)°]. Each L ligand bridges two AgI ions, resulting in the formation of a zigzag chain propagating along the [101] direction. In the crystal, Ag⋯Ag contacts [3.3023 (5) Å] and inter-molecular π-π stacking inter-actions [centroid-to-centroid distance = 3.5922 (15) Å] between the pyridine rings link these chains into a corrugated layer parallel to the ([Formula: see text]01) plane. The layers are stacked with a separation of 10.4532 (5) Å, and aceto-nitrile solvent mol-ecules and PF6- anions as guests are inter-calated between the layers. The layers are connected through several N/C-H⋯F hydrogen bonds and P-F⋯π inter-actions [F⋯ring centroid = 3.241 (8) Å] between the layer and the inter-calated guests and between the inter-calated guests, forming a three-dimensional supra-molecular network.
Highlights
{[AgL]PF62CH3CN}n, L = N-(pyridin-3-ylmethyl)pyridin-3-amine, comprises one AgI atom, one L ligand, two acetonitrile solvent molecules and one PF6
Atom is coordinated by two pyridine N atoms from two L ligands in a slightly distorted linear coordination geometry [N—Ag—N = 170.55 (8) ]
AgI ions have a preference for a linear two-coordinate geometry and can serve to link bridging dipyridyl-type ligands to form polymeric chains
Summary
Silver coordination polymers based on dipyridyl-type ligands have been widely exploited due to the intriguing topologies and the fascinating properties caused by a variety of coordination geometries and d10 electronic configurations of the AgI ion (Leong & Vittal, 2011; Moulton & Zaworotko, 2001; Wang et al, 2012). AgI ions have a preference for a linear two-coordinate geometry and can serve to link bridging dipyridyl-type ligands to form polymeric chains. Based on this concept, we have focused our attention on the development of one-dimensional AgI coordination polymers with dipyridyltype ligands. We have reported several AgI coordination polymers with interesting topologies involving zigzag (Moon et al, 2016), helical (Moon et al, 2014, 2015) and double helical (Lee et al, 2015) structures.
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