Lanthanum(III) iodate

Lanthanum(III) iodate

Identifiers
CAS Number	13870-19-4  Y[ echa ]
3D model (JSmol)	Interactive image
ChemSpider	20082411  N
ECHA InfoCard	100.034.187
EC Number	237-621-3
PubChem CID	15794045
CompTox Dashboard (EPA)	DTXSID70160761
InChI InChI=1S/3HIO3.La/c3*2-1(3)4;/h3*(H,2,3,4);/q;;;+3/p-3 Key: BULVJAIIOVREOT-UHFFFAOYSA-K
SMILES [O-]I(=O)=O.[O-]I(=O)=O.[O-]I(=O)=O.[La+3]
Properties
Chemical formula	La(IO3)3
Molar mass	663.617
Appearance	colourless crystals
Solubility in water	1.07×10−3mol·L−1 [1]
Related compounds
Other anions	lanthanum(III) nitrate lanthanum(III) oxide
Other cations	cerium(III) iodate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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: ^[1]

La³⁺ + 3 IO₃⁻ → La(IO₃)₃↓

Properties

Lanthanum(III) iodate can disproportionate and decompose to a periodate when heated: ^[2]

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

References

1. 《无机化学丛书》. 第七卷 钪 稀土元素. 易宪武 等主编. 科学出版社. P_184~185. 13. 卤素含氧酸盐
2. K. Nassau, J.W. Shiever, B.E. Prescott (Jun 1975). "Transition metal iodates. VI. Preparation and characterization of the larger lanthanide iodates" . Journal of Solid State Chemistry. 14 (2): 122–132. Bibcode:1975JSSCh..14..122N. doi:10.1016/0022-4596(75)90002-X. Archived from the original on 2018-07-01. Retrieved 2020-05-29.