The structures of the currently known zinc-blende boron pnictides (BN, BP and BAs), have dia topology (as cubic diamond) , which is characterized by the spatial arrangement of BN 4 , BP 4 or BAs 4 perfect (angle 109.47°) sp 3 -like corner-sharing tetrahedra in three-dimensional 3D nets (cf. Fig. ). Recently, we discovered a significant structural densification of zinc-blende BN and BP by adopting a quartz-derived structure (qtz topology) characterized by distorted corner-sharing BN and BP 4 tetrahedra .