Crystal engineering of a rectangular sql coordination network to enable xylenes selectivity over ethylbenzene

Abstract

<p> <bold>[Co(bipy)(bptz)(NCS)2]n</bold>, a new mixed-linker <bold>sql</bold> coordination network, exhibits high xylene adsorption capacity and high xylene selectivity over ethylbenzene (&gt;5).</p>

A square lattice topology coordination network that exhibits highly selective C2H2/CO2 separation performance

“…Such a gating effect has been seen for other sql coordination networks but remains a rarity among physisorbents in general 29 . Switching sql coordination networks are known to exhibit type F‐IV 38 or F‐II 38 isotherms 30,31 …”

“…22,24 Linker ligands not only play an important role in the design of sql coordination networks, by lining the pore or cavity surfaces they often emerge as the key to controlling sorbent-sorbate molecular recogniton. 20,30 N-donor based linker ligands have been widely studied for this purpose. 20,31,32 A literature survey of sql networks reported in TTO and CCDC revealed 28 that, whereas there are hundreds of distinct N-donor linkers that have been reported to form sql topology nets, only 15 such nets have been studied for gas/vapour sorption (Table S1).…”

“…29 Switching sql coordination networks are known to exhibit type F-IV 38 or F-II 38 isotherms. 30,31 The sorbate induced phase transformation of sql-16-Cu-NO 3 -α′ under cryogenic conditions prompted us to conduct in situ C 2 H 2 sorption PXRD experiments 39 at 195 K and 298 K from 0 to 1 bar to gain insight into the structural changes that accompany C 2 H 2 sorption. At 195 K (Figure 2A, left), initial C 2 H 2 uptake of 52 cm 3 /g occurred below 0.3 bar, at which point a phase transformation resulted in a gate-opening effect.…”

“…Linker ligands not only play an important role in the design of sql coordination networks, by lining the pore or cavity surfaces they often emerge as the key to controlling sorbent‐sorbate molecular recogniton 20,30 . N‐donor based linker ligands have been widely studied for this purpose 20,31,32 .…”

Reversible single-crystal to single-crystal phase transformation between a new Werner clathrate and its apohost

“…With respect to coordination networks, we and others [36][37][38][39][40] have demonstrated that square lattice topology coordination networks based upon Werner complexes connected by linker ligands 41 can exhibit reversible phase transformations when exposed to a range of guests. In addition, metal complexes that undergo structural switching and reversible isotherms triggered by a guest molecule remain quite rare.…”