Materials Data on Pr3Ni by Materials Project
Pr3Ni is Cementite structured and crystallizes in the orthorhombic Pnma space group. The structure is two-dimensional and consists of two Pr3Ni sheets oriented in the (0, 0, 1) direction. there are two inequivalent Pr sites. In the first Pr site, Pr is bonded in a distorted L-shaped geometry to two equivalent Ni atoms. There are one shorter (2.83 Å) and one longer (2.95 Å) Pr–Ni bond lengths. In the second Pr site, Pr is bonded in a distorted bent 150 degrees geometry to two equivalent Ni atoms. There are one shorter (2.85 Å) and one longer (2.97 Å) Pr–Ni bond lengths. Ni is bonded in a 6-coordinate geometry to six Pr atoms.
36 MATERIALS SCIENCE↗