Indium (III) fluoride

Crystal structure
__ In 3+      __ F -
General
Surname	Indium (III) fluoride
other names	Indium trifluoride
Ratio formula	F 3 In
Brief description	colorless solid
External identifiers / databases
CAS number 7783-52-0 13465-13-9 (nonahydrate) EC number 232-005-0 ECHA InfoCard 100,029,095 PubChem 82212 Wikidata Q4493207
properties
Molar mass	171.82 g mol −1
Physical state	firmly
density	4.39 g cm −3
Melting point	approx. 1170 ° C
boiling point	> 1200 ° C
solubility	practically insoluble in water (0.4 g l −1 at 20 ° C)
Refractive index	1.453
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 315-319-335 P: 261-305 + 351 + 338-302 + 352-321-405-501
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Indium (III) fluoride is an inorganic chemical compound of indium from the group of fluorides .

Extraction and presentation

Indium (III) fluoride can be produced by pyrolysis of ammonium hexafluoroindate in the fluorine stream.

${\displaystyle \mathrm {(NH_{4})_{3}[InF_{6}]\longrightarrow InF_{3}+3\ NH_{4}F} }$

It is also possible to produce it by reacting indium (III) oxide with fluorine

${\displaystyle \mathrm {2\ In_{2}O_{3}+6\ F_{2}\longrightarrow 4\ InF_{3}+3\ O_{2}} }$

or by reacting indium (III) chloride with hydrogen fluoride at 100 ° C.

${\displaystyle \mathrm {InCl_{3}+3\ HF\longrightarrow 3\ HCl+InF_{3}} }$

properties

Indium (III) fluoride is a colorless solid that is resistant to cold and hot water. In boiling water it hydrolyzes to indium oxide fluoride . Indium (III) fluoride (in contrast to the trihydrate) dissolves very little in water, but is easily soluble in dilute acids. It is reduced by a very slow hydrogen flow at 300 ° C to (almost pure) indium (I, III) fluoride , by a rapid hydrogen flow to the metal. Indium (III) fluoride has a crystal structure analogous to vanadium (III) fluoride ( trigonal , space group R 3 c (space group no. 167) , a = 5.4103 Å , c = 14.3775 Å) with in all directions the corner-sharing octahedra of fluorine atoms.

use

Indium (III) fluoride is used in the synthesis of non-oxide glasses and cyanohydrins and as a catalyst in some chemical reactions.

Individual evidence

1. ↑ ^{a b c d e f g} Georg Brauer (Ed.), With the collaboration of Marianne Baudler u. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 240.
2. ↑ ^{a b c d e f} data sheet Indium (III) fluoride, anhydrous, 99.95% (metals basis) from AlfaAesar, accessed on September 24, 2013 ( PDF )(JavaScript required) .
3. ^ Jean d'Ans, Ellen Lax, Roger Blachnik: Pocket book for chemists and physicists . Springer DE, 1998, ISBN 3-642-58842-5 , pp. 490 ( limited preview in Google Book search).
4. ^ JJ Zuckerman: Inorganic Reactions and Methods, The Formation of Bonds to Hydrogen . John Wiley & Sons, 2009, ISBN 0-470-14536-6 , pp. 89 ( limited preview in Google Book search).
5. ↑ R. Hoppe, D. Kissel: On the knowledge of AlF ₃ and InF ₃ . In: Journal of Fluorine Chemistry , 1984 , 24 , pp. 327-340 doi : 10.1016 / S0022-1139 (00) 81321-4
6. ^ William W. Porterfield: Inorganic Chemistry . Academic Press, 2013, ISBN 0-323-13894-2 , pp. 132 ( limited preview in Google Book search).
7. ↑ Dmitrii N. Khitarov, Boris Pavlovich Sobolev, Irina V. Alexeeva: The Rare Earth Trifluorides . Institut d'Estudis Catalans, 2001, ISBN 84-7283-610-X , p. 29 ( limited preview in Google Book search).
8. ↑ Data sheet Indium (III) fluoride, ≥99.9% trace metals basis from Sigma-Aldrich , accessed on September 24, 2013 ( PDF ).
9. ↑ Atta-ur- Rahman: Advances in Organic Synthesis: Modern Organofluorine Chemistry-Synthetic Aspects . Bentham Science Publishers, 2005, ISBN 1-60805-197-8 , pp. 192 ( limited preview in Google Book search).