Thallium(I) fluoride
Chemical compound
From Wikipedia, the free encyclopedia
Thallium(I) fluoride is the inorganic compound with the formula TlF. It is a white solid, forming orthorhombic crystals. The solid is slightly deliquescent.[2] It has a distorted sodium chloride (rock salt) crystal structure,[4][5] due to the 6s2 inert pair on Tl+.[6]
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| Names | |
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| Preferred IUPAC name
Thallium(I) fluoride | |
| Other names
Thallium monofluoride Thallous fluoride | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.029.231 |
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PubChem CID |
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| RTECS number |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| TlF | |
| Molar mass | 223.3817 g/mol |
| Appearance | yellow solid[1] |
| Density | 8.36 g cm−3 |
| Melting point | 327 °C (621 °F; 600 K) |
| Boiling point | 655 °C (1,211 °F; 928 K) (decomposes) |
| 78.6 g/100 mL (at 15 °C)[2] | |
| Solubility | slightly soluble in ethanol |
| −44.4·10−6 cm3/mol | |
| Structure | |
| Orthorhombic, oP8 | |
| Fmmm, No. 28 | |
| Hazards[3] | |
| GHS labelling: | |
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| Danger | |
| H300, H330, H373, H411 | |
| P260, P264, P270, P271, P273, P284, P301+P310, P304+P340, P310, P314, P320, P321, P330, P391, P403+P233, P405, P501 | |
| Related compounds | |
Other anions |
Thallium(I) chloride |
Other cations |
Gallium(III) fluoride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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This salt is unusual among the thallium(I) halides in that it is very soluble in water.[7]
Thallium(I) fluoride can be prepared by the reaction of thallium(I) carbonate with hydrofluoric acid.[4][1]