Protactinium (V) chloride

Crystal structure
	● Pa 5+ ○ Cl -
Crystal system	monoclinic
Space group	C 2 / c (No. 15)
Lattice parameters	a = 797 pm ; b = 1135 pm ; b = 836 pm ; β = 106.4 °
General
Surname	Protactinium (V) chloride
Ratio formula	PaCl 5
Brief description	yellow monoclinic crystals
External identifiers / databases
PubChem	11047828
ChemSpider	9222996
Wikidata	Q906013
properties
Molar mass	408.30 g mol −1
Physical state	firmly
density	3.74 g cm −3
Melting point	306 ° C
boiling point	420 ° 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 .

Protactinium (V) chloride is a chemical compound of protactinium and chlorine with the formula PaCl ₅ .

presentation

Protactinium (V) chloride can be obtained by reacting protactinium (V) oxide with thionyl chloride , carbon tetrachloride or carbon and chlorine.

{\ displaystyle {\ ce {Pa2O5 + SOCl2 -> 2 PaCl5 + 5 SO2}}}

{\ displaystyle {\ ce {Pa2O5 + CCl4 -> 2 PaCl5 + 5 COCl2}}}

{\ displaystyle {\ ce {Pa2O5 + 5 C (+ CCl4) + 5 Cl2 -> 2 PaCl5 + 5 CO2}}}

properties

Protactinium (V) chloride crystallizes with a yellow color in the monoclinic crystal system in the space group C 2 / c (space group no. 15) with the lattice parameters a = 797 pm , b = 1135 pm, c = 836 pm and β = 106.4 ° with four formula units per unit cell . It has a chain structure consisting of 7-fold coordinated non-regular pentagonal bipyramids , each dividing the edges of the pentagons. Template: room group / 15

safety instructions

Classifications according to the CLP regulation are not available because they only include the 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 ^g ^h R. P. Dodge, GS Smith, Q. Johnson, RE Elson: "The Crystal Structure of Protactinium Pentachloride", in: Acta Cryst. , 1967 , 22 , pp. 85-89; doi : 10.1107 / S0365110X67000155 .
↑ ^a ^b ^c David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Properties of the Elements and Inorganic Compounds, pp. 4-84.
↑ Protactinium (V) chloride at www.webelements.com.
↑ 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.
↑ Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 1173.

literature

Boris F. Myasoedov, Harold W. Kirby, Ivan G. Tananaev: Protactinium , in: Lester R. Morss, Norman M. Edelstein, Jean Fuger (eds.): The Chemistry of the Actinide and Transactinide Elements , Springer, Dordrecht 2006; ISBN 1-4020-3555-1 , pp. 161-252; doi : 10.1007 / 1-4020-3598-5_4 .

[STRUC-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h R. P. Dodge, GS Smith, Q. Johnson, RE Elson: "The Crystal Structure of Protactinium Pentachloride", in: Acta Cryst. , 1967 , 22 , pp. 85-89; doi : 10.1107 / S0365110X67000155 .

[Handbook-2] David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Properties of the Elements and Inorganic Compounds, pp. 4-84.

[web-3] Protactinium (V) chloride at www.webelements.com.

[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.

[brauer-5] Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 1173.