Iron (III) chloride oxide

Crystal structure
__ Fe 3+      __ Cl -      __ O 2−
General
Surname	Iron (III) chloride oxide
other names	Iron oxychloride
Ratio formula	FeOCl
Brief description	rust-colored solid
External identifiers / databases
CAS number 56509-17-2 EC number 260-233-0 ECHA InfoCard 100.054.740 PubChem 6453349 Wikidata Q6073022
properties
Molar mass	107.30 g mol −1
Physical state	firmly
Melting point	300 ° C (decomposition)
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 .

Iron (III) chloride oxide is an inorganic chemical compound of iron from the group of chlorides and oxides .

Extraction and presentation

Iron (III) oxychloride can be obtained by reacting iron (III) chloride hexahydrate with sublimed iron (III) chloride at 250 to 300 ° C. It is free from iron (III) oxide if sublimed iron (III) chloride was used and no higher temperature was used.

${\displaystyle \mathrm {FeCl_{3}\cdot 6\ H_{2}O+5\ FeCl_{3}\longrightarrow 6\ FeOCl+12\ HCl} }$

properties

Iron (III) oxychloride is a rust-colored powder made up of small, red needles. Above 300 ° C, disproportionation takes place in iron (III) oxide and iron (III) chloride. It has an orthorhombic crystal structure with the space group Pmmn (space group no. 59) and the lattice parameters a = 375 pm, b = 330 pm and c = 765 pm. The crystal structure consists of layers of double arcs of cis-FeCl ₂ O ₄ distorted octahedra connected by common edges within the crystallographic ac plane.

Individual evidence

1. ↑ ^{a b c d e} Georg Brauer (Ed.) U. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume III, Ferdinand Enke, Stuttgart 1981, ISBN 3-432-87823-0 , p. 1649.
2. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
3. ^ Duncan W. Bruce, Dermot O'Hare: Inorganic Materials . John Wiley & Sons, 1997, ISBN 0-471-96036-5 , pp. 203 ( limited preview in Google Book search).