Materials Data on PrMnCoGe2 by Materials Project

Abstract

PrMnCoGe2 crystallizes in the tetragonal I-4m2 space group. The structure is three-dimensional. Pr is bonded in a 8-coordinate geometry to four equivalent Mn, four equivalent Co, and eight equivalent Ge atoms. All Pr–Mn bond lengths are 3.34 Å. All Pr–Co bond lengths are 3.34 Å. All Pr–Ge bond lengths are 3.17 Å. Mn is bonded to four equivalent Pr, four equivalent Co, and four equivalent Ge atoms to form distorted MnPr4Co4Ge4 tetrahedra that share corners with four equivalent CoPr4Mn4Ge4 cuboctahedra, corners with twelve equivalent MnPr4Co4Ge4 tetrahedra, edges with two equivalent CoPr4Mn4Ge4 cuboctahedra, faces with four equivalent CoPr4Mn4Ge4 cuboctahedra, and faces with four equivalent MnPr4Co4Ge4 tetrahedra. All Mn–Co bond lengths are 2.88 Å. All Mn–Ge bond lengths are 2.43 Å. Co is bonded to four equivalent Pr, four equivalent Mn, and four equivalent Ge atoms to form distorted CoPr4Mn4Ge4 cuboctahedra that share corners with twelve equivalent CoPr4Mn4Ge4 cuboctahedra, corners with four equivalent MnPr4Co4Ge4 tetrahedra, edges with two equivalent MnPr4Co4Ge4 tetrahedra, faces with four equivalent CoPr4Mn4Ge4 cuboctahedra, and faces with four equivalent MnPr4Co4Ge4 tetrahedra. All Co–Ge bond lengths are 2.43 Å. Ge is bonded in a 9-coordinate geometry to four equivalent Pr, two equivalent Mn, two equivalent Co, and one Ge atom. The Ge–Ge bond length is 2.65 Å.