Thallium (III) fluoride

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Crystal structure
Crystal structure of thallium (III) fluoride
__ Tl 3+      __ F -
Crystal system

orthorhombic

Space group

Pnma (No. 62)Template: room group / 62

Lattice parameters

a = 5.81  Å , b = 6.97 Å, c = 4.84 Å

General
Surname Thallium (III) fluoride
other names

Thallium trifluoride

Ratio formula TlF 3
Brief description

white solid

External identifiers / databases
CAS number 7783-57-5
EC number 232-010-8
ECHA InfoCard 100.029.100
PubChem 2214
ChemSpider 74194
Wikidata Q4493237
properties
Molar mass 261.38 g mol −1
Physical state

firmly

density

8.36 g cm −3 (25 ° C)

Melting point

550 ° C (decomposition)

solubility

Decomposes in water

safety instructions
GHS labeling of hazardous substances
06 - Toxic or very toxic 08 - Dangerous to health 09 - Dangerous for the environment

danger

H and P phrases H: 300-330-373-411
P: 260-264-273-284-301 + 310-310
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Thallium (III) fluoride is an inorganic chemical compound of thallium from the group of fluorides .

Extraction and presentation

Thallium (III) fluoride can be obtained by reacting thallium (III) oxide with fluorine , boron trifluoride or sulfur tetrafluoride .

properties

Thallium (III) fluoride is a white, very moisture-sensitive solid that reacts immediately with water to form a black body.

The compound decomposes when heated in air, but can be melted in a fluorine atmosphere. It has an orthorhombic crystal structure with the space group Pnma (space group no. 62) and the lattice constants a = 5.81 Å , b = 6.97 Å, c = 4.84 Å analogous to that of ytterbium (III) fluoride . Template: room group / 62

Individual evidence

  1. ↑ a b c d e 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. 242.
  2. ↑ a b c d e data sheet Thallium (III) fluoride, 99% from Sigma-Aldrich , accessed on September 26, 2013 ( PDF ).
  3. ↑ Balaram Sahoo, Nimain C. Nayak, Asutosh Samantaray, Prafulla K. Pujapanda, Sahoo Balaram, nayak Nimai Charan, samantaray Asutosh, pujapanda Prafulla Kumar: Inorganic Chemistry . 2012, ISBN 978-81-203-4308-5 , pp. 263 ( limited preview in Google Book search).
  4. ^ JJ Zuckerman: Inorganic Reactions and Methods, The Formation of Bonds to Group VIB (O, S, Se, Te, Po) Elements . John Wiley & Sons, 2009, ISBN 978-0-470-14540-1 , pp. 485 ( limited preview in Google Book search).
  5. ^ Jean d'Ans, Ellen Lax, Roger Blachnik: Pocket book for chemists and physicists . Springer DE, 1998, ISBN 3-642-58842-5 , pp. 776 ( limited preview in Google Book search).
  6. ↑ C. Hebecker, R Hoppe: On the crystal structure of indium and thallium trifluoride . In: Naturwissenschaften , 1966 , 53 , p. 104.
  7. ^ Peter Paetzold: Chemistry: An introduction . Walter de Gruyter, 2009, ISBN 978-3-11-021135-1 , p. 204 ( limited preview in Google Book search).