Lanthanum(III) iodate explained

Lanthanum(III) iodate is an inorganic compound with the chemical formula La(IO₃)₃.

Preparation

Lanthanum(III) iodate can be obtained by reacting a La³⁺ salt with potassium iodate or ammonium iodate and precipitating it:

La³⁺ + 3 IO₃⁻ → La(IO₃)₃↓

Properties

Lanthanum(III) iodate can disproportionate and decompose to a periodate when heated:^[1]

10 La(IO₃)₃ → 2 La₅(IO₆)₃ + 12 I₂↑ + 27 O₂↑

Notes and References

1. Journal of Solid State Chemistry. 14. 2. en. Jun 1975. 122–132. 10.1016/0022-4596(75)90002-X. Transition metal iodates. VI. Preparation and characterization of the larger lanthanide iodates. 2020-05-29. K. Nassau, J.W. Shiever, B.E. Prescott. 1975JSSCh..14..122N . 2018-07-01. https://web.archive.org/web/20180701063936/https://linkinghub.elsevier.com/retrieve/pii/002245967590002X. live.