4-[3-(Isonicotinoyloxy)propoxycarbonyl]pyridinium diiodidoargentate(I)

Abstract

The structure of the title compound, (C15H15N2O4)[AgI2], consists of an organic 4-[3-(isonicotino­yloxy)propoxycarbon­yl]pyridinium cation which has a gauche–gauche (O/C/C/C—O/C/C/C or GG’) conformation and lies on a twofold rotation axis, which passes through the central C atom of the aliphatic chain, and an inorganic [AgI2]− anion. In the complex anion, the Ag+ cation is bound to two I− anions in a linear geometry. The anion was modelled assuming disorder around a crystallographic inversion centre near the location of the Ag+ cation. The crystal packing is stabilized by a strong inter­molecular N—H⋯N hydrogen bond, which links the cations into zigzag chains with graph-set notation C(16) running along the face diagonal of the ac plane. The N-bound H atom is disordered over two equally occupied symmetry-equivalent sites, so that the mol­ecule has a pyridinium ring at one end and a pyridine ring at the other.

A Low‐dimensional Viologen/Iodoargentate Hybrid [(BV)2­(Ag5I9)]n: Structure, Properties, and Theoretical Study

“…In detail, Ag(5) is in a two‐coordinate linear arrangement when Ag ··· Ag interactions are not taken into account. The linear two‐coordinate linear coordination mode of siler atoms can be frequently observed in Ag‐organic ligand systems,35 but for Ag‐halide polyhedra, two‐coordinate mode is rare 36,37. In this situation, Ag(5) can also treated as an included cation for structural stabilization, and the Ag 5 I 10 unit can be described as Ag 4 I 10 @Ag, so its disorder can be expected.…”

“…The linear two-coordinate linear coordination mode of siler atoms can be frequently observed in Ag-organic ligand systems, [35] but for Ag-halide polyhedra, two-coordinate mode is rare. [36,37] In this situation, Ag(5) can also treated as an included cation for structural stabilization, and the Ag 5 I 10 unit can be described as Ag 4 I 10 @Ag, so its disorder can be ex- pected. A series of monomeric and polymeric silver halide units centered by anion such as μ 6 -I, [38,39] μ 6 -C 2 2-, μ 6 -F, μ 3 -F, and μ 3 -CF 3 SO 3 [40][41][42] have been reported but this Ag 4 I 10 @Ag cluster centered by Ag + is unprecedented.…”

Self-Assembly of Discrete Metallocycles versus Coordination Polymers Based on Cu(I) and Ag(I) Ions and Flexible Ligands: Structural Diversification and Luminescent Properties

“…In the past few years, extensive studies have been carried out using rigid bridging ligands such as 4,4’-bipyridine-type compounds [ 20 , 21 , 22 , 23 ], Schiff-bases [ 24 , 25 , 26 , 27 , 28 ], or 2,4,6-tri(4-pyridyl)-1,3,5-triazine [ 29 , 30 , 31 , 32 ], in combination with silver to obtain Ag(I) polymeric networks with beautiful topologies and inclusion behaviors [ 33 , 34 , 35 ]. By contrast, the use of flexible ligands with several degrees of freedom and, hence, few conformational restraints have been avoided basically due to the unpredictable nature of the structure for the resulting polymers [ 36 , 37 ], since in order for such complexes to be potentially useful it is essential that their structures can be predictably tuned via variations in their constituent building blocks.…”