Tunable clathrates

Area of Science:

• Supramolecular Chemistry
• Crystal Engineering
• Host-Guest Chemistry

Background:

• Organic hosts are crucial for selective guest molecule recognition and encapsulation.
• Understanding host-guest interactions in liquid mixtures is vital for separation and storage applications.
• Diol-based organic hosts offer unique binding capabilities due to hydrogen bonding.

Purpose of the Study:

• To investigate the selectivity of a specific diol organic host for dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) mixtures.
• To characterize the inclusion compounds formed between the diol host and the liquid guest mixture.
• To elucidate the relationship between guest mixture composition and the stoichiometry of the resulting inclusion compounds.

Main Methods:

• Synthesis and characterization of inclusion compounds using techniques such as X-ray crystallography.
• Analysis of guest mixture composition and its correlation with host-guest stoichiometry.
• Structural determination of the five distinct inclusion compounds formed.

Main Results:

• The diol organic host demonstrated selective complexation with mixtures of DMF and DMSO.
• Five distinct inclusion compounds were successfully isolated and characterized.
• The stoichiometry of these compounds varied in discrete steps, directly correlating with the composition of the liquid guest mixture.

Conclusions:

• The diol organic host exhibits tunable selectivity for DMF/DMSO mixtures, forming discrete stoichiometric compounds.
• The study provides detailed structural insights into these supramolecular assemblies.
• Findings contribute to the design of selective host materials for liquid mixtures.