CAS 13470-38-7: Yttrium iodide (YI3)

Yttrium is a silvery white, hard metal that belongs to the lanthanide series. Yttrium(III) iodide is a crystalline solid that is soluble in water. It has been used in diffraction studies and x-ray crystallography to determine the molecular structure of chemical compounds. In these studies, yttrium(III) iodide is used as a heavy atom because it has the same electron configuration as uranium, which has one proton and one neutron in its nucleus. Yttrium(III) iodide can be obtained by reacting yttrium with iodine or by heating yttrium metal with potassium iodide. The compound's coordination number varies depending on the amount of oxygen atoms present; when there are no oxygen atoms coordinated to the cation, it is octahedral. When there are two oxygen atoms coordinated to the cation, it becomes square planar, and when there are three oxygen atoms coordinated to the cation, it becomes trigonal

Yttrium(III) iodide, is used as a starting material for YBCO superconducting materials in a lower temperature preparation. Applied in the solid-state synthesis of a new compound, Y21I18C14B7, which is the first example of a rare earth metal halide with interstitial halogen atoms with misfit characteristics. This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.