Uranium (V) chloride

Crystal structure
	__ U 5+ __ Cl -
General
Surname	Uranium (V) chloride
other names	Uranium pentachloride
Ratio formula	UCl 5
Brief description	red-brown solid
External identifiers / databases
Wikidata	Q7899704
properties
Molar mass	415.29 g mol −1
Physical state	firmly
density	3.81 g cm −3
solubility	reacts with water; insoluble in benzene, xylene and isopropyl ether;
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 .

Uranium (V) chloride is a chemical compound of uranium from the group of chlorides .

presentation

Uranium (V) chloride can be obtained by reacting uranium (VI) oxide with carbon tetrachloride , using a previously prepared amount of the compound as a catalyst .

{\ displaystyle {\ ce {4 UO3 + 10 CCl4 -> 4 UCl5 + 10 COCl2 + O2}}}

It can also be obtained by reacting uranium (IV) chloride with chlorine in a fluidized bed reactor at 550 ° C.

properties

Uranium (V) chloride is available in the form of a red-brown, microcrystalline powder or as black-red crystals with shiny metallic surfaces. In contrast to uranium (IV) chloride, it is soluble in liquid chlorine. The compound is very hygroscopic and decomposes in water or when heated into uranium (VI) chloride and uranium (IV) chloride. It reacts with organic solvents such as alcohols , acetone , diethyl ether or dioxane. Stable solutions are formed with some other solvents such as carbon tetrachloride, carbon disulfide, and thionyl chloride . The compound usually has a monoclinic crystal structure (α-form) with the space group P 2 ₁ / n (space group no. 14, position 2) and the lattice parameters a = 799 pm, b = 1069 pm, c = 848 pm and β = 91.5 °. However, there is also a triclinic β-form with the space group P 1 (No. 2) , which is formed by the crystallization of uranium (VI) chloride with carbon tetrachloride or dichloromethane . Template: room group / 14.2Template: room group / 2

Individual evidence

↑ ^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. 1208.
^ ^A ^b Lester R. Morss, Norman M. Edelstein, J. Fuger (Ed.): The Chemistry of the Actinide and Transactinide Elements (Set Vol. 1-6) . Volumes 1-6. Springer, Dordrecht 2010, ISBN 978-94-007-0211-0 , p. 522, 1795 (English, 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.

[brauer-1] ↑ ^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. 1208.

[Lester_R._Morss,_Norman_M._Edelstein,_J._Fuger-2] A ^b Lester R. Morss, Norman M. Edelstein, J. Fuger (Ed.): The Chemistry of the Actinide and Transactinide Elements (Set Vol. 1-6) . Volumes 1-6. Springer, Dordrecht 2010, ISBN 978-94-007-0211-0 , p. 522, 1795 (English, limited preview in Google Book Search).

[NV-3] 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.