Berkelium (III) oxide

Crystal structure
	__ Bk 3+ __ O 2−
Space group	Ia 3 (No. 206)
Lattice parameters	a = 1088 pm
General
Surname	Berkelium (III) oxide
other names	Berkelium sequioxide; Diberkelium trioxide;
Ratio formula	Bk 2 O 3
Brief description	yellow-green solid
External identifiers / databases
Wikidata	Q820878
properties
Molar mass	542.139 g mol −1
Physical state	firmly
Melting point	1920 ° 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 .

Berkelium (III) oxide is an oxide of the element Berkelium . It has the empirical formula Bk ₂ O ₃ . Since all isotopes of Berkelium are only artificially produced, Berkelium (III) oxide does not have any natural occurrences.

properties

Berkelium (III) oxide is produced from Berkelium (IV) oxide (BkO ₂ ) by reduction with hydrogen:

{\ displaystyle {\ ce {2 BkO2 + H2 -> Bk2O3 + H2O}}}

It is a yellow-green solid with a melting point of 1920 ° C. It forms a body-centered cubic crystal lattice with a = 1088.0 ± 0.5 pm .

safety instructions

Classifications according to the CLP regulation are not available because they only include chemical hazard and play 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 A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , p. 1972.
↑ 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.
↑ RD Baybarz: The Berkelium Oxide System , in: J. Inorg. Nucl. Chem. , 1968 , 30 (7), pp. 1769-1773 ( doi : 10.1016 / 0022-1902 (68) 80352-5 ).
↑ Joseph Richard Peterson: The Solution Absorption Spectrum of Bk ³⁺ and the Crystallography of Berkelium Dioxide, Sesquioxide, Trichloride, Oxychloride, and Trifluorid , Ph.D. Thesis, October 1967, US Atomic Energy Commission Document Number UCRL-17875 (1967).
↑ JR Peterson, BB Cunningham: Crystal Structures and Lattice Parameters of the Compounds of Berkelium I. Berkelium Dioxide and Cubic Berkelium Sesquioxide , in: Inorg. Nucl. Chem. Lett. , 1967 , 3 (9), pp. 327-336 ( doi : 10.1016 / 0020-1650 (67) 80037-0 ).

literature

David E. Hobart. Joseph R. Peterson: Berkelium , 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. 1444-1498 ( doi : 10.1007 / 1-4020-3598-5_10 ).

[HOWI_1972-1] A ^b ^c A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , p. 1972.

[NV-2] 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.

[BK_OX-3] RD Baybarz: The Berkelium Oxide System , in: J. Inorg. Nucl. Chem. , 1968 , 30 (7), pp. 1769-1773 ( doi : 10.1016 / 0022-1902 (68) 80352-5 ).

[PETERSON_THESIS-4] Joseph Richard Peterson: The Solution Absorption Spectrum of Bk ³⁺ and the Crystallography of Berkelium Dioxide, Sesquioxide, Trichloride, Oxychloride, and Trifluorid , Ph.D. Thesis, October 1967, US Atomic Energy Commission Document Number UCRL-17875 (1967).

[5] JR Peterson, BB Cunningham: Crystal Structures and Lattice Parameters of the Compounds of Berkelium I. Berkelium Dioxide and Cubic Berkelium Sesquioxide , in: Inorg. Nucl. Chem. Lett. , 1967 , 3 (9), pp. 327-336 ( doi : 10.1016 / 0020-1650 (67) 80037-0 ).