Lead fluorochloride
Names
Other names
Lead fluoride chloride, lead fluoro-chloride
Identifiers
InChI=1S/ClH.FH.Pb/h2*1H;/q;;+2/p-2
Key: FVEZKDUIAKYNFW-UHFFFAOYSA-L
Properties
PbFCl
Appearance
colorless crystals
Density
7.11 g/cm3 [ 1]
Melting point
603 °C (1,117 °F; 876 K)
Structure
tetragonal
P 4/mmm
Related compounds
Related compounds
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
Chemical compound
Lead fluorochloride or lead fluoride chloride is an inorganic compound of lead , fluorine , and chlorine with the chemical formula PbFCl .[ 2]
Natural occurences
The mineral matlockite with the chemical formula PbFCl was discovered in the early 1800s at Bage Mine in Bolehill near Matlock , alongside phosgenite and anglesite specimens. While phosgenite had already been identified by that time, it appears that matlockite was not officially recognized as a distinct new mineral for approximately 50 years after its discovery.[ 3]
Synthesis
The compound can be obtained by melting PbF2 PbCl2 [ 4]
PbF2 + PbCl2 → 2PbFCl An exchange reaction of acidified solutions of lead nitrate , potassium chloride , and potassium fluoride :
Pb(NO3 )2 + KF + KCl → PbClF + 2KNO3
Physical properties
The compound forms crystals of layered tetragonal system , space group P 4/mmm . Unit cell dimensions are a = 4.111 Å, c = 7.226 Å, V = 122.1 Å3 .[ 5]
Pure lead fluorochloride is transparent between 270 and 800 nm. It is fluorescent under UV light.[ 5]
References
^ Chen, Jianming; Shen, Dingzhong; Ren, Guohao; Mao, Rihua; Yin, Zhiwen (24 February 2004). "A high-density inorganic scintillator: lead fluoride chloride" . Journal of Physics D: Applied Physics 37 (6): 938– 941. Bibcode :2004JPhD...37..938C . doi :10.1088/0022-3727/37/6/020 . ISSN 0022-3727 . Retrieved 17 July 2025 . ^ Volborth, Alexis (2 December 2012). Elemental Analysis in Geochemistry Elsevier . p. 125. ISBN 978-0-444-60151-3 . Retrieved 17 July 2025 . ^ "Matlockite (Matlockite)" . Rock Identifier. Retrieved 17 July 2025 .^ Lieth, R. M. A. (29 June 2013). Preparation and Crystal Growth of Materials with Layered Structures Springer Science & Business Media . p. 47. ISBN 978-94-017-2750-1 . Retrieved 16 July 2025 . ^ a b Chen, Jianming; Shen, Dingzhong; Mao, Rihua; Ren, Guohao; Yin, Zhiwen (1 April 2003). "Crystal growth of PbFCl by modified Bridgman method" . Journal of Crystal Growth 250 (3): 393– 396. Bibcode :2003JCrGr.250..393C . doi :10.1016/S0022-0248(02)02353-9 . ISSN 0022-0248 . Retrieved 17 July 2025 .
Salts and covalent derivatives of the
fluoride ion
PF− 6 , AsF− 6 , SbF− 6 compoundsAlF2− 5 , AlF3− 6 compoundschlorides, bromides, iodides SiF2− 6 , GeF2− 6 compoundsOxyfluorides Organofluorides with transition metal, nitric acids bifluorides thionyl, phosphoryl,
