Dipraseodymium pentabromide
| Dipraseodymium pentabromide | |
|---|---|
| Identifiers | |
| Standard InChI | InChI=1S/5BrH.2Pr/h5*1H;;/q;;;;;+2;+3/p-5 |
| Standard InChIKey | IRMZRUDWEMFFKE-UHFFFAOYSA-I |
| CAS number | [] |
| Properties[1] | |
| Chemical formula | Pr2Br5 |
| Molar mass | 681.34 g mol−1 |
| Appearance | bronze crystalline solid, metallic lustre |
| Density | 5.30 g cm−3 |
| Structure[1] | |
| Space group | P21/m |
| Lattice constant | a = 774.38(4) pm, b = 415.33(3) pm, c = 1327.06(9) pm, α = 90°, β = 90.816(6)°, γ = 90° |
| Related compounds | |
| Other anions | Dipraseodymium pentaiodide |
| Other compounds | Praseodymium(III) bromide |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Dipraseodymium pentabromide, Pr2Br5, is a lower bromide of praseodymium. It is prepared by the controlled reduction of praseodymium(III) bromide with lithium vapour at 850 °C.[1] As with many of the lower lanthanoid halides, Pr2Br5 does not contain praseodymium(II) centres: instead, the extra electron required for electroneutrality with Pr3+ is delocalized in a metallic-type conduction band.[1][2]
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