Self-Assembled Three-Dimensional Coordination Polymers with Unusual Ligand-Unsupported Ag−Ag Bonds: Syntheses, Structures, and Luminescent Properties

Abstract

A staggered arrangement like that of the hydrogen atoms in ethane is exhibited by the six phenol groups about each pair of silver atoms in the self-assembled three-dimensional coordination networks [Ag(2)(H(2)L)(3)](n)X(2n) (H(2)L=N,N'-bis(salicylidene)-1,4-diaminobutane; X(-)=NO(3)(-) or ClO(4)(-)); the former is depicted (for clarity the H(2)L ligands are represented by long rods and the Ag atoms by hatched circles). These solids contain short ligand-unsupported metal-metal bonds and display intense blue photoluminescence at room temperature.

Crystal structure, DNA-binding properties and antioxidative activities of a novel silver(I) inorganic polymer

“…This distance is shorter than the sum of van de Waals radii of two silver atoms (3.440 Å ) [28], which indicates the presence of argentophilic interactions and has been found to contribute to the stability of multi-dimensional coordination polymers [29][30][31].…”

Metal‐Organic Frameworks: Interpenetration and Entanglement

“…Borromean interpenetration can even occur for 3D entanglements-[Ag 2 L 3 ]X 2 , L = N,N ′ -bis(salicylidene)-1,4-diaminobutane, X = NO 3 , ClO 4 shows 2D→3D parallel interpenetration (Figure 8c), but again no two nets are themselves entangled, and only the presence of a third leads to them being inseparable. 30 The inclined interpenetration of 2D nets must always lead to 3D networks, and thus this can be referred to as simply 2D inclined interpenetration. The structure of [Co(dca) 2 (4,4 ′ -bipy)] ⋅ 0.5H 2 O ⋅ 0.5MeOH shows 2D inclined interpenetration of (4,4) sheets; each window of each sheet contains a rod from one other inclined sheet passing through it ( Figure 9a).…”

“…Borromean interpenetration of (a) rings; (b) 2D→2D parallel interpenetrating sheets 29 ; (c) 2D→3D parallel interpenetrating sheets30 …”

Fine competition and control among argentophilic, electrostatic, and π···π interactions in a molecular chair structure

“…One interesting synthetic method is ring interconversion without any organic additive [16][17][18][19]. In the case of silver(I) cyclic compounds, understanding of closed-shell d 10 AgÁÁÁAg interactions that give rise to intriguing supramolecular motifs, crystal packing, and specific photophysical properties is a thematic issue [20][21][22][23][24][25][26]. According to our previous work, the reaction of Ag(I) with 1,5-bis(3-pyridyl)hexamethyltrisiloxane produced an unprecedented double strand consisting of siloxane-macrocycles [27].…”