Ytterbium(II) bromide
Names | |
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Other names
Ytterbium dibromide
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Identifiers | |
Properties | |
YbBr2 | |
Molar mass | 332.84 |
Appearance | pale yellow solid |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Ytterbium(II) bromide is an inorganic compound with the chemical formula YbBr2.
Preparation
Ytterbium(II) bromide can be produced by the reduction reaction of ytterbium(III) bromide and hydrogen at 500~600 °C:[1]
The ammonia compound can be obtained by reacting metallic
Ytterbium(II) bromide can also be prepared by vacuum reduction of metallic ytterbium at 960 °C:[2]
Properties
Ytterbium(II) bromide is a light yellow solid and is highly hygroscopic. It can only be stored in an inert atmosphere or high vacuum. It is unstable in air or moisture and rapidly converts to the oxybromide and releases hydrogen gas. Ytterbium(II) bromide belongs to the orthorhombic crystal system, with SrI2 structure and space group Pbca,[3] or CaCl2 structure and space group Pnnm. Its unit cell parameters are a=6.63 Å, b=6.93 Å, c=4.47Å.[1][3]
References
- ^ ISBN 978-3-432-02328-1.
- .
- ^ ISSN 0044-2313.