Bromine perchlorate

Bromine perchlorate is an inorganic chemical compound with the formula BrClO₄. Its structure is Br−O−ClO₃. It is a shock and light-sensitive red liquid which decomposes above −20 °C.^[1][2]

Bromine perchlorate

Names
Systematic IUPAC name Bromoperchlorate
Other names Perchloratobromine
Identifiers
CAS Number	32707-10-1
3D model (JSmol)	Interactive image
PubChem CID	13081482
InChI InChI=1S/BrClO4/c1-6-2(3,4)5
SMILES O=Cl(=O)(=O)OBr
Properties
Chemical formula	BrClO4
Molar mass	179.35 g·mol−1
Appearance	Red liquid
Melting point	−78 °C (−108 °F; 195 K)[1]
Boiling point	−20 °C (−4 °F; 253 K)[1] (decomposes)
Vapor pressure	0.7 kPa (−23 °C)[1]
Related compounds
Related compounds	Fluorine perchlorate Chlorine perchlorate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Preparation and reactions

Bromine perchlorate can be produced from the reaction of cesium perchlorate and bromine fluorosulfate at −20 °C:^[1]

CsClO₄ + BrSO₃F → BrOClO₃ + CsSO₃F

Alternatively, it can also be produced by the reaction of chlorine perchlorate and bromine at -45 °C. Bromine perchlorate reacts with hydrogen bromide to regenerate bromine:^[1]

BrOClO₃ + HBr → Br₂ + HClO₄

This compound also reacts with cesium perchlorate, to produce Cs⁺[Br(ClO₄)₂]⁻ (caesium diperchloratobromate(I)), and various fluorocarbon halides, to produce fluoroalkyl perchlorates.^[3][4]