Rubidium periodate

Structural formula
General
Surname	Rubidium periodate
Molecular formula	RbIO 4
Brief description	colorless crystals
External identifiers / databases
CAS number 13465-48-0 Wikidata Q1560634
properties
Molar mass	276.37  g · mol -1
Physical state	firmly
density	3.918 g cm −3
solubility	6.5 g l −1
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Rubidium periodate is the rubidium salt of periodic acid .

Manufacturing

Rubidium periodate is made by bubbling chlorine into a hot concentrated solution of rubidium iodate and rubidium hydroxide .

${\displaystyle \mathrm {RbIO_{3}+2\ RbOH+Cl_{2}\longrightarrow RbIO_{4}+2\ RbCl+H_{2}O} }$

properties

Physical Properties

Rubidium periodate crystallizes in the tetragonal crystal system in the space group I 4 ₁ / a (space group no. 88) with the lattice parameters a = 592.1 pm and c = 1305.2 pm, in the unit cell there are four formula units . The crystals are isomorphic with the crystals of potassium periodate .

Chemical properties

When heated, it decomposes, releasing oxygen.

${\displaystyle \mathrm {RbIO_{4}\longrightarrow RbI+2\ O_{2}\uparrow } }$

When a solution of rubidium periodate with rubidium hydrogen carbonate is slowly evaporated , rubidium orthoperiodate is formed.

${\displaystyle \mathrm {RbIO_{4}+RbHCO_{3}+H_{2}O\longrightarrow Rb_{2}H_{3}IO_{6}+CO_{2}\uparrow } }$

A binuclear rubidium orthoperiodate crystallizes out as a tetrahydrate from solutions of rubidium periodate and rubidium hydroxide.

${\displaystyle \mathrm {2\ RbIO_{4}+2\ RbOH+4\ H_{2}O\longrightarrow Rb_{4}H_{2}I_{2}O_{10}\cdot 4\ H_{2}O} }$

Individual evidence

1. ↑ ^{a b c d} Jean D'Ans, Ellen Lax: Pocket book for chemists and physicists. 3. Elements, inorganic compounds and materials, minerals, Volume 3. 4. Edition, Springer, 1997, ISBN 978-3-540-60035-0 , p. 688 ( limited preview in the Google book search).
2. ↑ ^{a b c} R. Abegg, F. Auerbach: Handbook of inorganic chemistry . Verlag S. Hirzel, Vol. 2, 1908. P. 431 ( full text ).
3. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
4. ↑ 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 .
5. ↑ ^{a b} G. V. Shilov, ZK Nikitina, Yu. A. Dobrovol'skii, LS Leonova, LO Atovmyan: Disubstituted Rubidium Orthoperiodate Rb ₂ H ₃ IO ₆ : Crystal and Molecular Structures and Properties . In: Russian Journal of Coordination Chemistry 2004 , 30 (7), pp. 449-452. doi: 10.1023 / B: RUCO.0000034783.23782.8d .