B-Tribromoborazine (${\mathrm{B}}_3\mathrm{B}{\mathrm{r}}_3{\mathrm{N}}_3{\mathrm{H}}_3$)

B-Tribromoborazine is ${\mathrm{B}}_3\mathrm{B}{\mathrm{r}}_3{\mathrm{N}}_3{\mathrm{H}}_3$, retaining all three N–H groups. Ring-retaining bromination replaces B–H groups, whereas simple hydrogen-halide addition also changes ring saturation.