Ytterbium(III) iodide is one of

ytterbium Ytterbium is a chemical element with the symbol Yb and atomic number 70. It is a metal, the fourteenth and penultimate element in the lanthanide series, which is the basis of the relative stability of its +2 oxidation state. However, like the othe ...

iodide An iodide ion is the ion I−. Compounds with iodine in formal oxidation state −1 are called iodides. In everyday life, iodide is most commonly encountered as a component of iodized salt, which many governments mandate. Worldwide, iodine defic ...

s, with the

chemical formula In chemistry, a chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, ...

of YbI₃.

Preparation

Ytterbium(III) iodide can be prepared by reacting metallic ytterbium with

iodine Iodine is a chemical element with the symbol I and atomic number 53. The heaviest of the stable halogens, it exists as a semi-lustrous, non-metallic solid at standard conditions that melts to form a deep violet liquid at , and boils to a vi ...

at 500°C with a 30 atm pressure: : 2 Yb + 3 I₂ → 2 YbI₃

Ytterbium(III) oxide Ytterbium(III) oxide is the chemical compound with the formula Yb2O3. It is one of the more commonly encountered compounds of ytterbium. It has the "rare-earth C-type sesquioxide" structure which is related to the fluorite structure with one quart ...

ytterbium(III) hydroxide Ytterbium is a chemical element with the symbol Yb and atomic number 70. It is a metal, the fourteenth and penultimate element in the lanthanide series, which is the basis of the relative stability of its +2 oxidation state. However, like the ot ...

or ytterbium(III) carbonate can react with

hydroiodic acid Hydroiodic acid (or hydriodic acid) is an aqueous solution of hydrogen iodide (HI). It is a strong acid, one that is ionized completely in an aqueous solution. It is colorless. Concentrated solutions are usually 48% to 57% HI. Reactions Hyd ...

to obtain ytterbium(III) iodide in

aqueous solution An aqueous solution is a solution in which the solvent is water. It is mostly shown in chemical equations by appending (aq) to the relevant chemical formula. For example, a solution of table salt, or sodium chloride (NaCl), in water would be re ...

: : Yb₂O₃ + 6 HI → 2 YbI₃ + 3 H₂O : Yb(OH)₃ + 3 HI → YbI₃ + 3 H₂O : Yb₂(CO₃)₃ + 6 HI → 2 YbI₃ + 3 H₂O + 3 CO₂ The ytterbium(III) iodide hydrate crystallized from the solution can be heated with

ammonium iodide Ammonium iodide is the chemical compound NH4I. It is used in photographic chemicals and some medications.Holleman, A. F.; Wiberg, E. ''Inorganic Chemistry'' Academic Press: San Diego, 2001. . It can be prepared by the action of hydroiodic acid on a ...

to obtain the anhydrous form.

Reactions

Ytterbium(III) iodide decomposes to

ytterbium(II) iodide Ytterbium(II) iodide is an iodide of ytterbium, with the chemical formula of YbI2. It is a yellow solid. Preparation Ytterbium(II) iodide can be prepared by heating ytterbium(III) iodide: :\mathrm It can also be prepared by reacting metalli ...

upon heating: :2 YbI₃ → 2 YbI₂ + I₂

References

{{Lanthanide halides Ytterbium(III) compounds Iodides Lanthanide halides