Materials Data on Eu(MnP)2 by Materials Project

Abstract

EuMn2P2 crystallizes in the trigonal P-3m1 space group. The structure is three-dimensional. Eu2+ is bonded to six equivalent P3- atoms to form EuP6 octahedra that share corners with twelve equivalent MnP4 tetrahedra, edges with six equivalent EuP6 octahedra, and edges with six equivalent MnP4 tetrahedra. All Eu–P bond lengths are 2.95 Å. Mn2+ is bonded to four equivalent P3- atoms to form MnP4 tetrahedra that share corners with six equivalent EuP6 octahedra, corners with six equivalent MnP4 tetrahedra, edges with three equivalent EuP6 octahedra, and edges with three equivalent MnP4 tetrahedra. The corner-sharing octahedra tilt angles range from 27–48°. There are one shorter (2.21 Å) and three longer (2.26 Å) Mn–P bond lengths. P3- is bonded in a 7-coordinate geometry to three equivalent Eu2+ and four equivalent Mn2+ atoms.