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      Illuminating host–guest cocrystallization between pyrogallol[4]arenes and the ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate

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          Abstract

          Symmetry-generated packing of a cocrystal composed of c-butyl-pyrogallol[4]arene and the ionic liquid, 1-ethyl-3-methylimidazolium ethylsulfate.

          Abstract

          The host–guest complexes of seven unique cocrystals containing pyrogallol[4]arenes and the ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate are fully described. The investigation of these cocrystals is directed at expanding the control of the solid-state structures of these unique host–guest assemblies. The effects of varying conditions such as solvent choice and aliphatic tail length appended on the host macrocycle are explored and shed new light on the resultant supramolecular structures.

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          X-Seed — A Software Tool for Supramolecular Crystallography

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            On the solid, liquid and solution structural organization of imidazolium ionic liquids

            1,3-dialkyl imidazolium salts are one of the most popular and investigated classes of room temperature ionic liquids. Although in various cases the physical-chemical properties and/or the outcome of the processes in these liquids significantly differ from those performed in "classical" dipolar organic solvents, they are still regarded as merely homogeneous solvents. In this brief overview it is developed the concept that pure 1,3-dialkylimidazolium ionic liquids are better described as hydrogen-bonded polymeric supramolecules of the type {[(DAI)x(X)x-n)] n+ [(DAI)x-n(X)x)] n-}n where DAI is the 1,3-dialkylimidazolium cation and X the anion. This structural pattern is a general trend for the solid phase and is maintained to a great extent in the liquid phase and even in the gas phase. The introduction of other molecules and macromolecules occurs with a disruption of the hydrogen bond network and in some cases can generate nano-structures with polar and non-polar regions where inclusion-type compounds can be formed.
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              Ionothermal synthesis--ionic liquids as functional solvents in the preparation of crystalline materials.

              Ionothermal synthesis is the use of ionic liquids simultaneously as both the solvent and potential template or structure directing agent in the formation of solids. It directly parallels hydrothermal synthesis where the solvent is water. In this feature article I discuss the general features of ionothermal synthesis and how the properties of the synthesis differ from those of other synthetic methodologies. In particular, I will discuss the role of the ionic liquid anion in determining the structure of the synthesised solid, the role of mineralisers such as water and fluoride, and the targeted use of unstable ionic liquids to produce new inorganic and inorganic-organic hybrid materials.
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                Author and article information

                Journal
                CRECF4
                CrystEngComm
                CrystEngComm
                Royal Society of Chemistry (RSC)
                1466-8033
                2014
                2014
                : 16
                : 27
                : 6010-6022
                Article
                10.1039/C4CE00359D
                cef9ce07-4ece-4eb4-ac72-7557b69af1fe
                © 2014
                History

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