Californium (III) fluoride

Structural formula
	__ Cf 3+ __ F -
Crystal system	orthorhombic
Lattice parameters	a = 665 pm ; b = 704 pm ; c = 439 pm
Coordination numbers	Cf [9], F [3]
General
Surname	Californium (III) fluoride
other names	Californium trifluoride
Molecular formula	CfF 3
Brief description	green solid
External identifiers / databases
Wikidata	Q1026969
properties
Molar mass	308.08 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 .

Californium (III) fluoride is a chemical compound consisting of the elements californium and fluorine . It has the formula CfF ₃ and belongs to the fluoride class of substances .

properties

Californium (III) fluoride is a yellow-green solid and has two crystalline structures that are temperature-dependent. At low temperatures the orthorhombic structure ( YF ₃ type) can be found with: a = 665.3 (3) pm , b = 703.9 (1) pm and c = 439.3 (3) pm. At higher temperatures it forms a trigonal system ( LaF ₃ type) with: a = 694.5 (3) pm and c = 710.1 (2) pm. Each Californium nucleus is surrounded by nine fluorine nuclei in a distorted triple-capped trigonal-prismatic structure.

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

↑ Californium (III) fluoride 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.
↑ JN Stevenson, JR Peterson: The Trigonal and Orthorhombic Crystal Structures of CfF ₃ and their Temperature Relationship , in: J. Inorg. Nucl. Chem. , 1973 , 35 (10), pp. 3481-3486 ( doi: 10.1016 / 0022-1902 (73) 80356-2 ).

literature

Richard G. Haire: Californium , 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. 1499-1576 ( doi: 10.1007 / 1-4020-3598-5_11 ).

[1] Californium (III) fluoride at www.webelements.com.

[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.

[3] JN Stevenson, JR Peterson: The Trigonal and Orthorhombic Crystal Structures of CfF ₃ and their Temperature Relationship , in: J. Inorg. Nucl. Chem. , 1973 , 35 (10), pp. 3481-3486 ( doi: 10.1016 / 0022-1902 (73) 80356-2 ).