Tang, Min-Min published the artcileRole of Rim Functions in Recognition and Selectivity of Small-Molecule Guests in Water-Soluble Cavitand Hosts, Computed Properties of 638-45-9, the publication is Chemistry – An Asian Journal (2022), 17(15), e202200466, database is CAplus and MEDLINE.
Groups on the upper rim of cavitands can play major roles in the recognition of small mols. Water-soluble deep cavitands 1, 2 or 3 bearing the walls upper rim of imidazole, urea, and Me urea, resp., were synthesized and characterized as hosts of small-mol. guests. The vase forms of 1 or 2 are stabilized through H-bonding to solvent water mols. between adjacent walls. Various small alkyl organic mols. – alcs., halides, cycloalkane derivatives and heterocycles – are efficiently bound in 1. For n-alcs. (C5 to C12), the -OH end is fixed at the upper rim and the alkyl parts are in the hydrophobic cavity. The longer alc. guests (C7-C12) show coiling. Cycloalkane guests rotate rapidly on all 3 axes within the host cavity, while heterocycles show orientations placing their heteroatoms near the cavitand rim. Competition studies between alkyl chlorides, bromides and iodides showed preference for binding of iodides in 1. Competition between cavitands for hexyl halide guests halide showed the order 2>1>3.
Chemistry – An Asian Journal published new progress about 638-45-9. 638-45-9 belongs to iodides-buliding-blocks, auxiliary class Iodide,Aliphatic hydrocarbon chain, name is 1-Iodohexane, and the molecular formula is C24H20Ge, Computed Properties of 638-45-9.
Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com