Lead (IV) fluoride

Crystal structure
	__ Pb 4+ __ F -
Crystal system	tetragonal
Space group	I 4 / mmm (No. 139)
Lattice parameters	a 425.36 pm, c 806.4 pm, Z = 2
Coordination numbers	[6] Pb
General
Surname	Lead (IV) fluoride
other names	Lead tetrafluoride
Ratio formula	PbF 4
Brief description	white solid
External identifiers / databases
EC number	232-012-9
ECHA InfoCard	100.029.102
PubChem	123258
Wikidata	Q14943806
properties
Molar mass	283.18 g mol −1
Physical state	firmly
density	6.7 g cm −3
Melting point	~ 600 ° C
safety instructions
H and P phrases	H: 360-373-410-302-332
	P: 260-261-281-304 + 340-405-501
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Lead (IV) fluoride is an inorganic chemical compound of lead from the group of fluorides .

Extraction and presentation

Lead (IV) fluoride can be obtained by reacting lead (II) fluoride or lead with fluorine .

{\ displaystyle {\ ce {PbF2 + F2 -> PbF4}}}

{\ displaystyle {\ ce {Pb + 2F2 -> PbF4}}}

properties

Lead (IV) fluoride is a white, crystalline solid that is very sensitive to moisture. In humid air it immediately turns brown due to the formation of lead dioxide .

{\ displaystyle {\ ce {PbF4 + 2H2O -> PbO2 + 4HF}}}

This reaction also happens in dilute hydrofluoric acid ; in concentrated hydrofluoric acid (or pure hydrogen fluoride ), lead fluoric acid ("fluoroplumbic acid") is formed.

{\ displaystyle {\ ce {PbF4 + 2HF -> H2PbF6}}}

The salts of this acid can also be prepared.

{\ displaystyle {\ ce {H2PbF6 + 2NaF -> Na2PbF6 + 2HF}}}

Lead (IV) fluoride has a tetragonal crystal structure with the space group I 4 / mmm (space group no.139 ) and the lattice constants a 425.36 pm, c 806.4 pm, and Z = 2. The compound exists like tin ( IV) fluoride of PbF ₆ - octahedra the on common equatorial bridges each having four PbF ₆ octahedra are linked to planar layers. Template: room group / 139

Individual evidence

↑ ^a ^b ^c ^d data sheet Lead (IV) fluoride, 99% from AlfaAesar, accessed on September 24, 2013 ( PDF )(JavaScript required) .
↑ ^a ^b ^c ^d Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 233.
^ Jean d'Ans, Ellen Lax, Roger Blachnik: Pocket book for chemists and physicists . Springer DE, 1998, ISBN 3-642-58842-5 , pp. 660 ( limited preview in Google Book search).
^ AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 970.
↑ M. Bork, R. Hoppe: On the structure of PbF4 with structure refinement on SnF4. In: Journal of Inorganic and General Chemistry. 622, 1996, pp. 1557-1563, doi : 10.1002 / zaac.19966220919 .

http://site.iugaza.edu.ps/bqeshta/files/2010/02/94398_12.pdf (p. 20)

[Alfa-1] ta sheet Lead (IV) fluoride, 99% from AlfaAesar, accessed on September 24, 2013 ( PDF )(JavaScript required) .

[brauer-2] Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 233.

[Jean_d’Ans,_Ellen_Lax,_Roger_Blachnik-3] Jean d'Ans, Ellen Lax, Roger Blachnik: Pocket book for chemists and physicists . Springer DE, 1998, ISBN 3-642-58842-5 , pp. 660 ( limited preview in Google Book search).

[Arnold_F._Holleman,_Egon_Wiberg-4] AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 970.

[DOI10.1002/zaac.19966220919-5] M. Bork, R. Hoppe: On the structure of PbF4 with structure refinement on SnF4. In: Journal of Inorganic and General Chemistry. 622, 1996, pp. 1557-1563, doi : 10.1002 / zaac.19966220919 .