Neodymium(III) bromide

Neodymium(III) bromide is an inorganic salt of bromine and neodymium the formula NdBr₃. The anhydrous compound is an off-white to pale green solid at room temperature, with an orthorhombic PuBr₃-type crystal structure. The material is hygroscopic and forms a hexahydrate in water (NdBr₃· 6H₂O), similar to the related neodymium(III) chloride.

Preparation

The direct reaction of neodymium with bromine can create neodymium(III) bromide:

In the presence of carbon, neodymium(III) oxide reacts with carbon tetrabromide to produce neodymium(III) bromide.

Structure

Neodymium(III) bromide adopts the plutonium(III) bromide crystal structure. The neodymium ions are 8-coordinate and adopt a bicapped trigonal prismatic geometry. The neodymium–bromine bond lengths are 3.07 Å and 3.09 Å.

Related compounds

Neodymium(III) bromide forms compounds with hydrazine, such as NdBr₃·N₂H₄·2H₂O, which is a pink crystal that is soluble in water but insoluble in benzene, with d_{20 Ã‚°C} = 3.2376 g/cm³.

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