Rubidium iodate

Structural formula
Crystal system	rhombohedral
Space group	R 3 m (No. 160)
Lattice parameters	a = 641.3 pm, c = 789.2 pm
General
Surname	Rubidium iodate
Molecular formula	RbIO 3
External identifiers / databases
EC number	236-604-8
ECHA InfoCard	100.033.263
Wikidata	Q2171595
properties
Molar mass	260.37 g · mol -1
Physical state	firmly
density	4.33 g cm −3
Melting point	decomposition
solubility	21 g l −1 (23 ° C)
safety instructions
H and P phrases	H: 272-317-334
	P: ?
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Rubidium iodate is the rubidium salt of iodic acid .

Manufacturing

Rubidium iodate can be made from stoichiometric amounts of rubidium carbonate and iodic anhydride .

{\ displaystyle {\ ce {Rb2CO3 + I2O5 -> 2RbIO3 + CO2 ^}}}

properties

Physical Properties

Rubidium iodate crystallizes in the trigonal crystal system in the space group R 3 m (space group no. 160) with the lattice parameters a = 641.3 pm, c = 789.2 pm and 3 formula units per unit cell . Rubidium iodate is easily soluble in hydrochloric acid and turns yellow. The crystals are isomorphic with the crystals of potassium iodate . Template: room group / 160

Chemical properties

When heated, rubidium iodate decomposes into rubidium iodide and oxygen :

{\ displaystyle {\ ce {2RbIO3 -> 2RbI + 3O2 ^}}}

By introducing chlorine into a hot concentrated solution of rubidium iodate and rubidium hydroxide , rubidium periodate is produced .

{\ displaystyle {\ ce {RbIO3 + 2RbOH + Cl2 -> RbIO4 + 2RbCl + H2O}}}

Rubidium iodate reacts with hydrofluoric acid to form rubidium difluoroiodate, which forms orthorhombic crystals.

{\ displaystyle {\ ce {RbIO3 + 2HF -> 2RbF2IO2 + H2O}}}

Individual evidence

↑ ^a ^b ^c ^d ^e Jean D'Ans, Ellen Lax: Paperback for chemists and physicists. 3. Elements, inorganic compounds and materials, minerals, Volume 3. 4. Edition, Springer, 1997, ISBN 978-3-5406-0035-0 , pp. 686f. ( limited preview in Google Book search).

↑ ^a ^b ^c R. Abegg, F. Auerbach: Handbook of inorganic chemistry . Verlag S. Hirzel, Vol. 2, 1908. P. 431 ( full text ).

↑ There is not yet a harmonized classification for this substance . A labeling of Rubidium iodate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), retrieved on July 12, 2020, is reproduced from a self-classification by the distributor .

↑ Thomas Vipond Barker: II . ? Note on the iodates and periodates of the alkali metals and the ammonium radicle. In: Journal of the Chemical Society, Transactions. 93, 1908, p. 15, doi : 10.1039 / CT9089300015 .

↑ RF Weinland, O. Lauenstein: "About Fluoriodates" in Zeitschr. f. Anorg. Chem. 1899 , 20 (1), pp. 30-39 ( full text ).

[Lax-1] Jean D'Ans, Ellen Lax: Paperback for chemists and physicists. 3. Elements, inorganic compounds and materials, minerals, Volume 3. 4. Edition, Springer, 1997, ISBN 978-3-5406-0035-0 , pp. 686f. ( limited preview in Google Book search).

[Abegg-2] R. Abegg, F. Auerbach: Handbook of inorganic chemistry . Verlag S. Hirzel, Vol. 2, 1908. P. 431 ( full text ).

[3] Template: CL Inventory / not harmonized There is not yet a harmonized classification for this substance . A labeling of Rubidium iodate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), retrieved on July 12, 2020, is reproduced from a self-classification by the distributor .