The title bromide, prepared by metallothermic reduction of PrBr₃ with Li (molar ratio 1:1, 850 °C, sealed Ta container), crystallizes in the monoclinic system, space group P21/m, Z=2.

ChemInform Abstract

The title bromide, prepared by metallothermic reduction of PrBr₃ with Li (molar ratio 1:1, 850 °C, sealed Ta container), crystallizes in the monoclinic system, space group P21/m, Z=2. Its structure contains two crystallographically independent Pr atoms, surrounded by mono- and bicapped trigonal prisms of Br^-, respectively. Therefore, it has to be formulated as (Pr³⁺)2(Br^-)₅e^- and should be metallic. Pr₂Br₅ is isostructural with Pr₂I₅ and is believed to be identical with PrBr_2.38 reported for the Pr/PrBr₃ system.

References

Citing Literature

Volume19, Issue4

January 26, 1988

ChemInform Abstract: Pr2Br5: No Mixed Valence Praseodymium Bromid.

Abstract