Actinium (III) chloride

Crystal structure
	__ Ac 3+ __ Cl -
Crystal system	hexagonal
Space group	Room group P 6 3 / m (room group no.176)
Lattice parameters	a = 762 pm ; c = 455 pm
General
Surname	Actinium (III) chloride
other names	Actinium trichloride
Ratio formula	AcCl 3
Brief description	colorless solid
External identifiers / databases
Wikidata	Q2964147
properties
Molar mass	333.36 g mol −1
Physical state	firmly
density	4.81 g cm −3
Sublimation point	900 ° C
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 .

Actinium (III) chloride is a chemical compound of actinium from the group of chlorides .

Extraction and presentation

Actinium (III) chloride can be obtained by reacting actinium (III) hydroxide or actinium (III) oxalate with carbon tetrachloride at 500 ° C.

{\ displaystyle \ mathrm {2 \ Ac (OH) _ {3} +3 \ CCl_ {4} \ longrightarrow 2 \ AcCl_ {3} +3 \ CO_ {2} +6 \ HCl}}

It is also possible to display it by reacting actinium (III) hydroxide with ammonium chloride .

{\ displaystyle \ mathrm {Ac (OH) _ {3} +3 \ NH_ {4} Cl \ longrightarrow AcCl_ {3} +3 \ NH_ {3} +3 \ H_ {2} O}}

properties

Actinium (III) chloride is a colorless crystalline solid. It has a crystal structure of the uranium (III) chloride type with the space group P 6 ₃ / m (space group no. 176) and the lattice parameters a = 762 pm, c = 455 pm. Template: room group / 176

The reaction of actinium (III) chloride with moist ammonia at 1000 ° C yields the oxide chloride AcOCl.

{\ displaystyle \ mathrm {AcCl_ {3} +2 \ NH_ {3} + H_ {2} O \ longrightarrow AcOCl + 2 \ NH_ {4} Cl}}

safety instructions

Classifications according to the GHS regulation are not available because they only include chemical hazard, which plays a completely subordinate role compared to the hazards based on radioactivity . The latter also only applies if the amount of substance involved is relevant.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f Georg Brauer , with the assistance of Marianne Baudler u. a. (Ed.): Handbook of Preparative Inorganic Chemistry . 3rd, revised edition. tape I . Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , pp. 1125 .
^ ^A ^b Dale L. Perry: Handbook of Inorganic Compounds, Second Edition . CRC Press, 2011, pp. 1 ( 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 Georg Brauer , with the assistance of Marianne Baudler u. a. (Ed.): Handbook of Preparative Inorganic Chemistry . 3rd, revised edition. tape I . Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , pp. 1125 .

[Dale_L._Perry-2] A ^b Dale L. Perry: Handbook of Inorganic Compounds, Second Edition . CRC Press, 2011, pp. 1 ( 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.