Stepwise Synthesis of Charged and Neutral Two-Dimensional Networks via One-Dimensional Silver(I) Coordination Polymer Based on Bis(4-pyridylmethyl)sulfide

Abstract

Stepwise synthesis and structural characterization of two-dimensional (2-D) coordination polymer frameworks with positive charged or neutral cavities are reported. First, reactions of bis(4-pyridylmethyl)sulfide (L) with silver salts (1: nitrate and 2: perchlorate) afforded the respective double-stranded one-dimensional (1-D) chains [Ag(L)NO 3 ] n (1) and {[Ag 2 (L) 2 ](ClO 4 ) 2 } n (2), both of which are stabilized by face-to-face π-π interactions. In this case, the silver(I) center in the nitrato complex 1 shows four-coordinated distorted tetrahedral geometry, whereas that of the perchlorato complex 2 exhibits a distorted trigonal planar geometry. The difference of these structures indicates that the coordination ability of the anions has important effects on the silver(I) coordination environments. Interestingly, the perchlorato 1-D complex 2 allows further reactions with bridging ligands such as 4,4 0 -bipyridine (bpy) and terephthalate (tp 2-) to give a 2-D positive-charged network {[Ag 2 (L) 2 (bpy)] 3 (ClO 4 ) 2 3 C 6 H 6 } n (3) and a 2-D neutral network {[Ag 2 (L) 2 (tp)] 3 2DMSO 3 6H 2 O} n (4), respectively. The nitrato 1-D complex 1, however, showed no reactivity with the bridging ligands in the same condition. The results show that the replacement of anion by the bridging ligand in the coordination sphere of the 1-D precursor plays crucial roles in determining the reactivity for the synthesis of higher dimensional open frameworks.

Crystal structure of a looped-chain CoIIcoordination polymer:catena-poly[[bis(nitrato-κO)cobalt(II)]bis[μ-bis(pyridin-3-ylmethyl)sulfane-κ2N:N′]]

“…In this area of research, dipyridyl-type molecules as organic building blocks have been widely used to construct diverse one-dimensional self-assembled coordination polymers with intriguing structural topologies (Leong & Vittal, 2011;Wang et al, 2012). Our group has also developed several one-dimensional coordination polymers with fascinating topologies such as zigzag (Lee et al, 2013;Moon et al, 2016), helical (Moon et al, 2014(Moon et al, , 2015, double helical (Lee et al, 2015), looped chain (Ju et al, 2014) and ribbon-type double-stranded (Moon et al, 2017;Park et al, 2010) structures using dipyridyl-type ligands. In an extension of our research, the title compound was prepared by the reaction of cobalt(II) nitrate with bis(pyridin-3-ylmethyl)sulfane (L) as a flexible dipyridyl-type ligand, synthesized using a literature procedure (Park et al, 2010;Lee et al, 2012).…”

catena-Poly[[silver(I)-μ-N-[(pyridin-2-yl)methyl]pyridine-3-amine-κ2N:N′] hexafluoridophosphate]

“…For structures of Ag I coordination polymers with symmetrical dipyridyl ligands, see: Lee et al (2012); Leong & Vittal (2011); Park et al (2010) and of Ag I coordination polymers with unsymmetrical dipyridyl ligands, see: ; Zhang et al (2013). For the synthesis of the ligand, see: Lee et al (2013).…”

“…Data collection: SMART (Bruker, 2000); cell refinement: SAINT-Plus (Bruker, 2000); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 2005); software used to prepare material for publication: SHELXTL (Sheldrick, 2008). Metal-organic frameworks based on silver ions and dipyridyl type ligands have been of increasing interest in coordination chemistry owing to their intriguing architectures caused by the variety of coordination geometries of the Ag(I) ions (Lee et al, 2012;Leong & Vittal, 2011;Park et al, 2010). Recently, we have reported an investigation of Ag(I) coordination polymers using unsymmetrical dipyridyl ligands with nitrogen donor atoms in different positions on the two terminal pyridines Zhang et al, 2013).…”

Bis[μ-N-(pyridin-2-ylmethyl)pyridin-3-amine-κ2N:N′]disilver(I) bis(perchlorate) dimethyl sulfoxide disolvate

“…For structures of Ag I coordination polymers with symmetrical dipyridyl ligands, see: Lee et al (2012); Leong & Vittal (2011); Park et al (2010) and of Ag I coordination polymers with unsymmetrical dipyridyl ligands, see: Moon & Park (2013); Zhang et al (2013). For the synthesis of the ligand, see : Foxon et al (2002); Lee et al (2008).…”

“…Data collection: SMART (Bruker, 2000); cell refinement: SAINT-Plus (Bruker, 2000); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 2005); software used to prepare material for publication: SHELXTL (Sheldrick, 2008). In the development of silver(I) coordination polymers with fascinating structures, numerous symmetrical dipyridyl ligands with nitrogen donor atoms in the same positions on the two terminal pyridines are employed due to their easy synthesis (Lee et al, 2012;Leong & Vittal, 2011;Park et al, 2010). Despite the rapid growth in the Ag I coordination chemistry, however, the investigation of Ag I coordination polymers using unsymmetrical dipyridyl ligands with nitrogen donor atoms on different positions in the two terminal pyridines still remains lacking (Moon et al, 2013;Zhang et al, 2013).…”