Spontaneous Resolution in the Ionothermal Synthesis of Homochiral Zn(II) Metal–Organic Frameworks with (10,3)-a Topology Constructed from Achiral 5-Sulfoisophthalate

Assembling Metal–Organic Frameworks in Ionic Liquids and Supercritical CO2

“…[63] Liu et al synthesized homochiral enantiomers{ (Emim)[Zn(SIP)(IM)]} n (Emim = 1ethyl-3-methylimidazolium) that possessed chiral (10,3)-a topology constructed froma na chiral rigid 5-sulfoisophthalate (SIP) ligand and imidazole (IM) by means of ionothermal synthesis. [64] Furthermore, they synthesized ac hiral heterometallic compound [(Emim)NaCu(1,4-ndc) 2 ] n constructed from the achiral 1,4-naphthalenedicarboxylate (1,4-ndc) ligand. [65] The strong interactions between chiral additives and metal sites in the framework were responsible for the chiralinduction.…”

Ionothermal Syntheses, Crystal Structures and Luminescence of Two Lanthanide‐Carboxylate Frameworks based on the 1, 4‐Naphthalenedicarboxylate and Oxalate Mixed Ligands

“…Sharp lines of the ff transitions between the 7 F 0 and 5 L 6 , 5 D 2 levels can be observed in the excitation spectrum ( Figure 5), which are characteristic of the Eu III energy-level structures. [16] In the excitation spectrum, the broad band overlapping some of sharp intra-4f 6 lines indicates that the Eu III ions are mainly excited via an effective sensitized process involving the organic ligand excited states, rather than by direct excitation of the Eu III ion. The emission spectrum of 1 exhibits very strong red light and characteristic emission spectrum of Eu III ion upon excitation at 390 nm ( Figure 5).…”

Molecular tectonics: enantiomerically pure chiral crystals based on trans-1,2-cyclohexanediol

“…In principle, for the generation of CCPs, three strategies have been developed: (i) combinations of chiral coordinating ligands with metal centres 11,12,13 , (ii) combinations of achiral ligands and metal nodes in a chiral medium (solvent, template, etc) 14 , (iii) combination of achiral components undergoing spontaneous resolution. 15,16,17 For the first strategy, a variety of chiral ligands bearing asymmetric carbon centres, for example, 18,19 or chiral-at-metal metallaligands have been used. 20,21,22,23,24 Chiral CCPs may find applications for enantioselective separation and/or adsorption, 25,26,27,28,29,30,31 asymmetric catalysis, 32,33,34 and sensing.…”