Crystal structures and decomposing of B–P compounds under pressure
Zhang Die †, Jin Xilian, Zhuang Quan, Li Ying, Yang Shuhan, Song Liying, Liu Bingbing, Cui Tian ‡
       

The calculated product of pressure and volume PV and the internal energy U of BP and B6P with respect to B and P as a function of pressure. (a) The P Δ V and Δ U of BP; (b) the P Δ V and Δ U of B6P; (c) and (d) the calculated volume per BP and B6P with respect to the decomposition to B+P and 6B+P at corresponding pressures.