Materials Data on Co(BrO3)2 by Materials Project
CoO4BrO2Br crystallizes in the monoclinic P2_1/m space group. The structure is one-dimensional and consists of two hydrobromic acid molecules; two hydrogen peroxide molecules; and one CoO4Br ribbon oriented in the (0, 1, 0) direction. In the CoO4Br ribbon, Co2+ is bonded in a linear geometry to four O2- atoms. There are two shorter (1.76 Å) and two longer (2.85 Å) Co–O bond lengths. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Co2+ and two O2- atoms. There are one shorter (1.24 Å) and one longer (2.96 Å) O–O bond lengths. In the second O2- site, O2- is bonded in a water-like geometry to two equivalent Co2+ atoms. In the third O2- site, O2- is bonded in a single-bond geometry to one O2- atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one O2- and one Br5+ atom. The O–Br bond length is 1.73 Å. Br5+ is bonded in a single-bond geometry to one O2- atom.