DOI: 10.17188/1300047
title: Materials Data on Mg3Mn5(BO4)4 by Materials Project

description: Mg3Mn5(BO4)4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are three inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with three MnO6 octahedra, edges with two equivalent MgO6 octahedra, and edges with two equivalent MnO6 octahedra. The corner-sharing octahedra tilt angles range from 55–66°. There are a spread of Mg–O bond distances ranging from 2.03–2.34 Å. In the second Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with three MnO6 octahedra, edges with two equivalent MgO6 octahedra, and edges with two equivalent MnO6 octahedra. The corner-sharing octahedra tilt angles range from 54–66°. There are a spread of Mg–O bond distances ranging from 2.02–2.33 Å. In the third Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with three MnO6 octahedra, edges with two equivalent MgO6 octahedra, and edges with two equivalent MnO6 octahedra. The corner-sharing octahedra tilt angles range from 56–67°. There are a spread of Mg–O bond distances ranging from 2.04–2.35 Å. There are five inequivalent Mn+2.80+ sites. In the first Mn+2.80+ site, Mn+2.80+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing MnO6 octahedra. The corner-sharing octahedra tilt angles range from 55–67°. There are a spread of Mn–O bond distances ranging from 2.07–2.37 Å. In the second Mn+2.80+ site, Mn+2.80+ is bonded to six O2- atoms to form distorted MnO6 octahedra that share a cornercorner with one MnO6 octahedra, corners with two equivalent MgO6 octahedra, edges with two equivalent MgO6 octahedra, and edges with four MnO6 octahedra. The corner-sharing octahedra tilt angles range from 55–67°. There are a spread of Mn–O bond distances ranging from 1.95–2.42 Å. In the third Mn+2.80+ site, Mn+2.80+ is bonded to six O2- atoms to form distorted MnO6 octahedra that share corners with three MgO6 octahedra and edges with six MnO6 octahedra. The corner-sharing octahedra tilt angles range from 55–66°. There are a spread of Mn–O bond distances ranging from 1.93–2.43 Å. In the fourth Mn+2.80+ site, Mn+2.80+ is bonded to six O2- atoms to form distorted MnO6 octahedra that share corners with three MgO6 octahedra, edges with two equivalent MgO6 octahedra, and edges with four MnO6 octahedra. The corner-sharing octahedra tilt angles range from 54–66°. There are a spread of Mn–O bond distances ranging from 1.94–2.40 Å. In the fifth Mn+2.80+ site, Mn+2.80+ is bonded to six O2- atoms to form MnO6 octahedra that share a cornercorner with one MgO6 octahedra, corners with two equivalent MnO6 octahedra, edges with two equivalent MgO6 octahedra, and edges with four MnO6 octahedra. The corner-sharing octahedra tilt angles range from 56–67°. There are a spread of Mn–O bond distances ranging from 1.93–2.38 Å. There are four inequivalent B3+ sites. In the first B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.35–1.41 Å. In the second B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.35–1.41 Å. In the third B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.35 Å) and two longer (1.41 Å) B–O bond length. In the fourth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.35 Å) and two longer (1.40 Å) B–O bond length. There are sixteen inequivalent O2- sites. In the first O2- site, O2- is bonded to four Mn+2.80+ atoms to form distorted OMn4 tetrahedra that share corners with two equivalent OMn4 tetrahedra and edges with two equivalent OMgMn3 tetrahedra. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Mg2+ and one B3+ atom. In the third O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Mg2+, one Mn+2.80+, and one B3+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to three Mn+2.80+ and one B3+ atom. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to one Mg2+, two equivalent Mn+2.80+, and one B3+ atom. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to three Mn+2.80+ and one B3+ atom. In the seventh O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Mg2+ and one B3+ atom. In the eighth O2- site, O2- is bonded to one Mg2+ and three Mn+2.80+ atoms to form a mixture of distorted edge and corner-sharing OMgMn3 tetrahedra. In the ninth O2- site, O2- is bonded to one Mg2+ and three Mn+2.80+ atoms to form a mixture of distorted edge and corner-sharing OMgMn3 tetrahedra. In the tenth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Mg2+ and one B3+ atom. In the eleventh O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Mg2+, one Mn+2.80+, and one B3+ atom. In the twelfth O2- site, O2- is bonded in a 4-coordinate geometry to one Mg2+, two equivalent Mn+2.80+, and one B3+ atom. In the thirteenth O2- site, O2- is bonded in a 4-coordinate geometry to one Mg2+, two equivalent Mn+2.80+, and one B3+ atom. In the fourteenth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Mg2+, one Mn+2.80+, and one B3+ atom. In the fifteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Mn+2.80+ and one B3+ atom. In the sixteenth O2- site, O2- is bonded to one Mg2+ and three Mn+2.80+ atoms to form distorted OMgMn3 tetrahedra that share corners with two equivalent OMgMn3 tetrahedra and edges with two equivalent OMn4 tetrahedra.