Fukasawa, Yuto; Kaneko, Masashi; Nakashima, Satoru published their research in Journal of Radioanalytical and Nuclear Chemistry in 2021. The article was titled 《Density functional study on Am(III)/Eu(III) selectivity using crown ether type ligands》.COA of Formula: C10H20O5 The article contains the following contents:
D. functional theory calculations were applied to understand the selectivity between Am3+ and Eu3+ ions with the crown ethers type ligands. 18C6 is predicted to form the most stable complex with Eu3+ and show the higher stability for Am3+ over Eu3+, being consistent with previously reported Am3+/Eu3+ selectivity. The authors modeled N- and S-donor complexes by using framework of 18C6 complex and analyzed the complexation Gibbs energies, indicating that 18C6 with N-donor atoms is suitable for both complexation and higher Am3+ stability over Eu3+ due to the stronger covalent interaction. In the experimental materials used by the author, we found 1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5COA of Formula: C10H20O5)
1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. COA of Formula: C10H20O5
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem