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PrH2 is Fluorite structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pr is bonded in a body-centered cubic geometry to eight equivalent H atoms. All Pr–H bond lengths are 2.41 Å. H is bonded to four equivalent Pr atoms to form a mixture of edge and corner-sharing HPr4 tetrahedra.
Rh2P is Fluorite structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Rh is bonded to four equivalent P atoms to form a mixture of distorted edge and corner-sharing RhP4 tetrahedra. All Rh–P bond lengths are 2.41 Å. P is bonded in a body-centered cubic geometry to eight equivalent Rh atoms.