Structure of sodium perbromate monohydrate.

NaBrO4.H2O, Mr = 184.90, monoclinic, C2/c, a = 15.

Structure of nickel(II) perbromate hexahydrate at 296 K.

Ni(BrO4)2.6H2O, Mr = 454.61, trigonal, P3, a = 7.