2023
DOI: 10.1002/asia.202300428
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Desolvation Induced Conformational Transition in a Cryptophane Host: Crystal To Crystal Transformation

Priyanka Ghosh,
Manoar Hossain,
Pardha Saradhi Satha
et al.

Abstract: Cryptophanes show different conformations in solution and solid state depending upon various factors, such as the length of connecting linkers, medium, and nature of the incoming guest molecule(s). A cyclotriguaiacylenes (CTG) based cryptophane molecule was synthesized using click chemistry containing three triazole linkers and studied as well. This molecule shows two conformations, out-out crown-crown (CC), and out-in CC, in the presence or absence of guest molecule(s), as studied both in solution and solid s… Show more

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“…[14] Factors such as length of linkers, the nature of solvent and guest molecules influence the conformational preferences in solution and the solid state [15] . The imploded conformations, particularly the out – saddle conformer, can be formed by the collapse of out – out conformers due to the evacuation of guest molecules at high temperature, particularly in solvents that are too big to occupy the cavity [15a] (although an exception of spontaneous isomerization has been reported [16] ). The formation of imploded conformations can be reversed by reflux in a solvent suitable as a guest molecule [17] .…”
Section: Introductionmentioning
confidence: 99%
“…[14] Factors such as length of linkers, the nature of solvent and guest molecules influence the conformational preferences in solution and the solid state [15] . The imploded conformations, particularly the out – saddle conformer, can be formed by the collapse of out – out conformers due to the evacuation of guest molecules at high temperature, particularly in solvents that are too big to occupy the cavity [15a] (although an exception of spontaneous isomerization has been reported [16] ). The formation of imploded conformations can be reversed by reflux in a solvent suitable as a guest molecule [17] .…”
Section: Introductionmentioning
confidence: 99%