Berkelium (III) bromide

Crystal structure
	__ Bk 3+ __ Br -
Crystal system	orthorhombic
Space group	Cmcm (No. 63)
Lattice parameters	a = 403 pm; b = 1271 pm ; c = 912 pm
General
Surname	Berkelium (III) bromide
other names	Berkelium tribromide
Ratio formula	BkBr 3
Brief description	yellow-green crystals
External identifiers / databases
Wikidata	Q820864
properties
Molar mass	486.78 g mol −1
Physical state	firmly
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) bromide is a bromide of the artificial element and actinoid Berkelium with the empirical formula BkBr ₃ . In this salt , Berkelium occurs in the +3 oxidation state.

properties

Berkelium (III) bromide crystallizes in the PuBr ₃ type at low temperatures , the crystal system is orthorhombic with a = 403 pm, b = 1271 pm and c = 912 pm. At higher temperatures it crystallizes in the AlCl ₃ type , the crystal system is monoclinic with a = 723 pm, b = 1253 pm, c = 683 pm and β = 110.6 °.

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

^ AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , p. 1969.
↑ 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 John H. Burns, JR Peterson, JN Stevenson: Crystallographic Studies of some Transuranic Trihalides: ²³⁹ PuCl ₃ , ²⁴⁴ CmBr ₃ , ²⁴⁹ BkBr ₃ and ²⁴⁹ CfBr ₃ , in: J. Inorg. Nucl. Chem. , 1975 , 37 (3), pp. 743-749 ( doi : 10.1016 / 0022-1902 (75) 80532-X ).
↑ JP Young, RG Haire, JR Peterson, DD Ensor, RL Fellows: Chemical Consequences of Radioactive Decay. 1. Study of ²⁴⁹ Cf Ingrowth into Crystalline ²⁴⁹ BkBr ₃ : A New Crystalline Phase of CfBr ₃ , in: Inorg. Chem. , 1980 , 19 (8), pp. 2209-2212 ( doi : 10.1021 / ic50210a003 ).
^ D. Cohen, S. Fried, S. Siegel, B. Tani: The preparation and crystal structure of some berkelium compounds , in: Inorg. Nucl. Chem. Lett. , 1968 , 4 (5), pp. 257-260 ( doi : 10.1016 / 0020-1650 (68) 80125-4 ).
↑ JR Peterson, DE Hobart: The Chemistry of Berkelium , in: Harry Julius Emeleus (Ed.): Advances in Inorganic Chemistry and Radiochemistry , Volume 28, Academic Press, 1984, ISBN 0-12023628-1 , pp. 29-64 ( doi : 10.1016 / S0898-8838 (08) 60204-4 ), here: pp. 52–53 ( limited preview in the Google book search.

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_1969-1] AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , p. 1969.

[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.

[Burns_1975-3] A ^b John H. Burns, JR Peterson, JN Stevenson: Crystallographic Studies of some Transuranic Trihalides: ²³⁹ PuCl ₃ , ²⁴⁴ CmBr ₃ , ²⁴⁹ BkBr ₃ and ²⁴⁹ CfBr ₃ , in: J. Inorg. Nucl. Chem. , 1975 , 37 (3), pp. 743-749 ( doi : 10.1016 / 0022-1902 (75) 80532-X ).

[4] JP Young, RG Haire, JR Peterson, DD Ensor, RL Fellows: Chemical Consequences of Radioactive Decay. 1. Study of ²⁴⁹ Cf Ingrowth into Crystalline ²⁴⁹ BkBr ₃ : A New Crystalline Phase of CfBr ₃ , in: Inorg. Chem. , 1980 , 19 (8), pp. 2209-2212 ( doi : 10.1021 / ic50210a003 ).

[5] D. Cohen, S. Fried, S. Siegel, B. Tani: The preparation and crystal structure of some berkelium compounds , in: Inorg. Nucl. Chem. Lett. , 1968 , 4 (5), pp. 257-260 ( doi : 10.1016 / 0020-1650 (68) 80125-4 ).

[6] JR Peterson, DE Hobart: The Chemistry of Berkelium , in: Harry Julius Emeleus (Ed.): Advances in Inorganic Chemistry and Radiochemistry , Volume 28, Academic Press, 1984, ISBN 0-12023628-1 , pp. 29-64 ( doi : 10.1016 / S0898-8838 (08) 60204-4 ), here: pp. 52–53 ( limited preview in the Google book search.