Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Chemical compound
Thallium triiodide is a chemical compound of thallium and iodine with formula TlI3. Unlike the other thallium trihalides, which contain thallium(III), TlI3 is a thallium(I) salt and contains the triiodide ion, I− 3.
An appreciation as to why Tl+ is not oxidised to Tl3+ in the reaction:
Tl3+ + 2 I− → Tl+ + I2
can be gained by considering the standard reduction potentials of the half cells which are:
Tl3+ + 2 e− → Tl+;Er° = 1.252
I2 + 2 e− → 2 I−;Er° = 0.5355
The favoured reaction is therefore the reduction of Tl3+ to Tl+ (1.252 > 0.5355).
Using standard electrode potentials in this way must be done with caution as factors such as complex formation and solvation may affect the reaction. TlI3 is no exception as it is possible to stabilise thallium(III) with excess I− forming the tetraiodothallate (TlI− 4) ion (isoelectronic with the tetraiodomercurate anion and with lead(IV) iodide).
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Thalliumtriiodide is a chemical compound of thallium and iodine with formula TlI3. Unlike the other thallium trihalides, which contain thallium(III),...
anion have been isolated, including thallium(I) triiodide (Tl+[I3]−) and ammonium triiodide ([NH4]+[I3]−). Triiodide is observed to be a red colour in solution...
the monohalides, and thalliumtriiodide contains the linear triiodide anion (I− 3) and is actually a thallium(I) compound. Thallium(III) sesquichalcogenides...
Thallium iodide can refer to: Thallium(I) iodide (thallium monoiodide), TlI Thalliumtriiodide, TlI3 This set index article lists chemical compounds articles...
suspension of TlBr. Thallium(I) triiodide TlI3 is a black crystalline solid prepared from TlI and I2 in aqueous HI. It does not contain thallium(III), but has...
trigonal planar. The compound with stoichiometry TlI3 is a thallium(I) compound involving the triiodide anion, I− 3. Hoffman, Darleane C.; Lee, Diana M.; Pershina...
I-125, and I-131 in medicine and biology). Sodium iodide activated with thallium, NaI(Tl), when subjected to ionizing radiation, emits photons (i.e., scintillate)...
potassium iodide may be added to increase solubility via formation of triiodide ions, among other polyiodides. Nonpolar solvents such as hexane and carbon...
other well-characterized members of its group, boron, gallium, indium, and thallium; it is also expected for nihonium. Aluminium can surrender its three outermost...
NH4N3) III. −RnNXm The halogenated nitrogen group X:halogen (e.g. nitrogen triiodide NI3 and nitrogen trichloride NCl3) IV. −C=N−O− The fulminate group (e...
nitrogen trichloride, nitrogen tribromide, and nitrogen triiodide being explosive—nitrogen triiodide being so shock-sensitive that the touch of a feather...
it is that of the preceding noble gas plus a filled d-subshell, and for thallium and nihonium it is that of the preceding noble gas plus filled d- and f-subshells...
trichloride anion, [Cl3]−, has also been characterised; it is analogous to triiodide. The three fluorides of chlorine form a subset of the interhalogen compounds...
temperature-sensitive, volatile solid that is explosive even at −100 °C. Nitrogen triiodide (NI3) is still more unstable and was only prepared in 1990. Its adduct...
stabilized by the larger halogens, so that the trichloride, tribromide, triiodide, and even diiodide are known. The oxidation state +1 is known only for...
tribromide anion, Br− 3, has also been characterised; it is analogous to triiodide. Bromine oxides are not as well-characterised as chlorine oxides or iodine...
iodide ion, such as by addition of potassium iodide (KI), because the triiodide ion is formed. The table below is a summary of the key physical and atomic...
above 650 °C, tribromide is dark-brown and decomposes above 400 °C, and triiodide is black. Of the dihalides, difluoride is not known, dichloride is brown...
In addition, neptunium hydrocarbyls have been prepared, and solvated triiodide complexes of neptunium are a precursor to many organoneptunium and inorganic...
5.90 g/cm3), and similar treatment results in a new phase of samarium triiodide (density 5.97 g/cm3). Sintering powders of samarium oxide and boron, in...
"Crystal Structures of the Trifluorides, Trichlorides, Tribromides, and Triiodides of Americium and Curium". Inorganic Chemistry. 4 (7): 985. doi:10.1021/ic50029a013...
metal-halide lamp, similar to the mercury-vapor lamp, is made from scandium triiodide and sodium iodide. This lamp is a white-light source with high color rendering...
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