Americium(III) chloride

Hexagonal

A = 738.2 pm c = 421.4 pm

Am, Cl

Americiumtrichlorid

Pink hexagonal crystals

Fixed

5.87 g · cm -3

715 ° C

1253 ° C

Template: Infobox chemical / molecular formula search available

Americium (III ) chloride is a chloride of the artificial element and actinide americium with the empirical formula AmCl3. In this salt americium occurs in the oxidation state 3.

Properties

Americium (III ) chloride is pink hexagonal crystals. Its crystal structure is isotypic with uranium (III ) chloride. In the structure of the Americiumatome be surrounded by nine chlorine atoms as coordination polyhedra results here a triple überkapptes, trigonal prism with the lattice parameters a = 738 pm and c = 421 pm and two formula units per unit cell. The melting point of the compound is 715 ° C.

The hexahydrate ( AmCl3 · 6 H2O ) has a monoclinic crystal structure with a = 970.2 pm, b = 656.7 pm and c = 800.9 pm, and β = 93 ° 37 '; Space group P2 / n

Use

Americium (III ) chloride can be reduced in a molten salt of NaCl in the presence of americium easily americium (II ) chloride. This can be used for the separation of americium from Pu.

Safety

Classifications according to the Hazardous Substances Ordinance are not available because they only include the chemical danger and play a very minor role compared to the risks based on the radioactivity. Even the latter applies only if there is a relevant material for this amount.