In 2019,IUCrData included an article by Ramesh, V.; Rajarajan, K.; Gunasekaran, B.. Recommanded Product: 1,4,7,10,13-Pentaoxacyclopentadecane. The article was titled 《Bis(15-crown-5-κ5O)barium tetrakis(isothiocynato-κN)zinc(II)》. The information in the text is summarized as follows:
In the title compound, [Ba(C10H20O5)2][Zn(NCS)4], the 15-crown-5 mols. are disordered over two positions with site occupancies of 0.706 (4) and 0.294 (4). The Ba2+ ions are sandwiched between the 15-crown-5 rings and Zn2+ ions are surrounded by four N atoms from the thiocyanate ligands in a distorted tetrahedral geometry. The crystal studied was refined as an inversion twin. The experimental part of the paper was very detailed, including the reaction process of 1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5Recommanded Product: 1,4,7,10,13-Pentaoxacyclopentadecane)
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. Recommanded Product: 1,4,7,10,13-Pentaoxacyclopentadecane
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem