Boron Chemical Shifts in B6O

The XPS spectrum of the boron suboxide, B6O, is reported. The spectra were obtained on a powder sample that was prepared and characterized at the Diamond Technology Center, Norton Company. It was characterized with x‐ray diffraction and was prepared by established methods. The B 1s peak is split into two components of approximately equal area corresponding to the equal numbers of boron atoms at the two inequivalent sites of the B6O structure. The two B 1s components have binding energies of 187.4 and 189.2 eV.