Thallium(I) bromide

Thallium(I) bromide
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Template:Longitem	TlBr
Molar mass	284.287 g/mol
Appearance	yellow crystalline solid
Density	7.5 g/cm3
Melting point	Template:Chembox CalcTemperatures
Boiling point	Template:Chembox CalcTemperatures
Template:Longitem	3.71Template:E
Template:Longitem	−63.9·10−6 cm3/mol
Template:Longitem	2.418 (0.59 μm); 2.350 (0.75 μm); 2.289 (1 μm); 1.984 (5 μm); 2.322 (20 μm)
Template:Longitem	CsCl, cP2
Template:Longitem	Pm3m, No. 221
Template:Longitem	Cubic (Tl+); Cubic (Br−)
Template:Longitem	Thallium(I) fluoride,; Thallium(I) chloride,; Thallium(I) iodide
Template:Longitem	Indium(I) bromide,; Lead(II) bromide; Bismuth bromide

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Thallium(I) bromide is a chemical compound of thallium and bromine with a chemical formula TlBr. This salt is used in room-temperature detectors of X-rays, gamma-rays and blue light, as well as in near-infrared optics.

It is a semiconductor with a band gap of 2.68 eV.^[7]

The crystalline structure is of cubic CsCl type at room temperature, but it lowers to the orthorhombic thallium iodide type upon cooling, the transition temperature being likely affected by the impurities.^[8] Nanometer-thin TlBr films grown on LiF, NaCl or KBr substrates exhibit a rocksalt structure.^[6]

Like all soluble thallium salts, thallium bromide is extremely toxic and a cumulative poison which can be absorbed through the skin. Acute and chronic effects of ingesting thallium compounds include fatigue, limb pain, peripheral neuritis, joint pain, loss of hair, diarrhea, vomiting, vision loss, and damage to central nervous system, liver and kidneys.^[9]

References

↑ ^a ^b ^c ^d Haynes, p. 4.94
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↑ Haynes, p. 4.135
↑ Haynes, p. 10.242
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↑ Temperature Dependence of Spectroscopic Performance of Thallium Bromide X- and Gamma-Ray Detectors
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↑ Thallium Bromide Material safety data sheet Template:Webarchive. espimetals.com

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Cited sources

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[r1-1] Haynes, p. 4.94

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[4] Haynes, p. 4.135

[5] Haynes, p. 10.242

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[7] Temperature Dependence of Spectroscopic Performance of Thallium Bromide X- and Gamma-Ray Detectors

[8] Script error: No such module "Citation/CS1".

[9] Thallium Bromide Material safety data sheet Template:Webarchive. espimetals.com

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Thallium(I) bromide

References

Cited sources

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