Thorium (IV) iodide

Crystal structure
	__ Th 4+ __ I -
Crystal system	monoclinic
Space group	P 2 1 / n (No. 14, position 2)
Lattice parameters	a = 1321.6 pm ; b = 806.8 pm ; c = 776.6 pm ; β = 98.68 °
General
Surname	Thorium (IV) iodide
other names	Thorium tetraiodide
Ratio formula	ThI 4
Brief description	yellow solid
External identifiers / databases
EC number	232-211-0
ECHA InfoCard	100.029.283
PubChem	82256
Wikidata	Q2049604
properties
Molar mass	739.66 g mol −1
Physical state	firmly
density	6.0 g cm −3
Melting point	556 ° C
boiling point	658 ° C
solubility	soluble in water
Hazard and safety information
	; Radioactive
GHS hazard labeling ; no classification available
GHS hazard labeling ; no classification available
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Thorium (IV) iodide is an inorganic chemical compound of thorium from the group of iodides .

Extraction and presentation

Thorium (IV) iodide can be obtained by reacting thorium (IV) carbide or thorium with iodine at 500 ° C.

{\ displaystyle \ mathrm {Th + 2 \ I_ {2} \ longrightarrow ThI_ {4}}}

It is also possible to produce it by reacting thorium (IV) hydride with hydrogen iodide .

properties

Thorium (IV) iodide is an extremely air- and moisture-sensitive solid, which is in the form of crystal platelets that are orange when heated and yellow when cold. It has a monoclinic crystal structure with the space group P 2 ₁ / n (space group no.14 , position 2) and the lattice parameters a = 1321.6 pm, b = 806.8 pm, c = 776.6 pm, β = 98 , 68 °. A decahydrate of the compound is also known. It forms complex compounds with Lewis bases . It reacts with thorium to form thorium (III) iodide and thorium (II) iodide . Template: room group / 14.2

use

Thorium (IV) iodide is used as an intermediate product for the production of high-purity thorium by thermal decomposition of the compound ( Van-Arkel-de-Boer process ).

Individual evidence

↑ A. Zalkin, JD Forrester, DH Templeton: The Crystal Structure of thorium tetraiodide . In: Inorganic Chemistry , 1964 , 3 , pp. 639-644 doi : 10.1021 / ic50015a007 .
↑ ^a ^b ^c ^d ^e ^f ^g Georg Brauer (Ed.), With the collaboration of Marianne Baudler u. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 1140.
↑ ^a ^b Jane E. Macintyre: Dictionary of Inorganic Compounds . CRC Press, 1992, pp. 3511 ( limited preview in Google Book search).
↑ The hazards emanating from radioactivity do not belong to the properties to be classified according to the GHS labeling. With regard to other hazards, this substance has either not yet been classified or a reliable and citable source has not yet been found.
^ ^A ^b Lester R. Morss, Norman M. Edelstein, J. Fuger (Ed.): The Chemistry of the Actinide and Transactinide Elements (Set Vol. 1-6) . Springer, 2010, ISBN 978-94-007-0211-0 , pp. 61, 83 ( limited preview in Google Book search).
^ Catherine E. Housecroft, AG Sharpe: Inorganic Chemistry . Pearson Education, 2005, pp. 756 ( limited preview in Google Book search).

[1] A. Zalkin, JD Forrester, DH Templeton: The Crystal Structure of thorium tetraiodide . In: Inorganic Chemistry , 1964 , 3 , pp. 639-644 doi : 10.1021 / ic50015a007 .

[brauer-2] ↑ ^a ^b ^c ^d ^e ^f ^g Georg Brauer (Ed.), With the collaboration of Marianne Baudler u. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 1140.

[Jane_E._Macintyre-3] Jane E. Macintyre: Dictionary of Inorganic Compounds . CRC Press, 1992, pp. 3511 ( limited preview in Google Book search).

[NV-4] The hazards emanating from radioactivity do not belong to the properties to be classified according to the GHS labeling. With regard to other hazards, this substance has either not yet been classified or a reliable and citable source has not yet been found.

[Lester_R._Morss,_Norman_M._Edelstein,_J._Fuger-5] A ^b Lester R. Morss, Norman M. Edelstein, J. Fuger (Ed.): The Chemistry of the Actinide and Transactinide Elements (Set Vol. 1-6) . Springer, 2010, ISBN 978-94-007-0211-0 , pp. 61, 83 ( limited preview in Google Book search).

[Catherine_E._Housecroft,_A._G._Sharpe-6] Catherine E. Housecroft, AG Sharpe: Inorganic Chemistry . Pearson Education, 2005, pp. 756 ( limited preview in Google Book search).