Syntheses, structures and luminescent properties of two 3D pillared open frameworks with unique 6-connected structures based on 4,5-dihydroxy-1,3-benzenedisulfonate

Crystal structures of sodium-, lithium-, and ammonium 4,5-dihydroxybenzene-1,3-disulfonate (tiron) hydrates

“…The free acid of tiron has been used in an aqueous flow battery because of its two-electron redox couple within range of an aqueous system, high water solubility, and low cost (Yang et al, 2014). When crystallized, tiron molecules can form a network through coordination of the counter-cation to the sulfonate or protonated or deprotonated hydroxide of the tiron (Cô té & Shimizu, 2001Sheriff et al, 2003;Guan & Wang, 2016, 2017. These networks can range from onedimensional networks, which form a linear polymer (Cô té & Shimizu, 2003;Sheriff et al, 2003), to three-dimensional networks in which each tiron anion is coordinated to a metal cation and forms an interconnected lattice among all tiron anions in the crystal (Cô té & Shimizu, 2001Guan & Wang, 2016).…”

“…When crystallized, tiron molecules can form a network through coordination of the counter-cation to the sulfonate or protonated or deprotonated hydroxide of the tiron (Cô té & Shimizu, 2001Sheriff et al, 2003;Guan & Wang, 2016, 2017. These networks can range from onedimensional networks, which form a linear polymer (Cô té & Shimizu, 2003;Sheriff et al, 2003), to three-dimensional networks in which each tiron anion is coordinated to a metal cation and forms an interconnected lattice among all tiron anions in the crystal (Cô té & Shimizu, 2001Guan & Wang, 2016). Many of these tiron-containing crystal structures exhibit counter-cation-dependent luminescent properties (Guan & Wang, 2016, 2017.…”

“…These networks can range from onedimensional networks, which form a linear polymer (Cô té & Shimizu, 2003;Sheriff et al, 2003), to three-dimensional networks in which each tiron anion is coordinated to a metal cation and forms an interconnected lattice among all tiron anions in the crystal (Cô té & Shimizu, 2001Guan & Wang, 2016). Many of these tiron-containing crystal structures exhibit counter-cation-dependent luminescent properties (Guan & Wang, 2016, 2017. The three-dimensional networks with tiron can absorb H 2 S gas after interstitial and coordinated H 2 O are liberated with heat (Cô té & Shimizu, 2003).…”

“…Of the structures reported, seven exhibited -stacking interactions between at least two tiron molecules as represented by their intercentroid distances. A rarer structural feature of these complexes is the formation of networks between tiron molecules and their corresponding counter-cations in which only HUCMOH, ADOXUP, and HUCMOH02 form threedimensional networks by eliciting multiple bonds to the cations (Cô té & Shimizu, 2003;Guan & Wang, 2016). Both presented Li + and Na + tiron salts are the first examples of tiron-containing structures with monovalent cations that form three-dimensional networks.…”