DOI: 10.17188/1700019
title: Materials Data on MnSiO3 by Materials Project

description: MnSiO3 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are six inequivalent Mn2+ sites. In the first Mn2+ site, Mn2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Mn–O bond distances ranging from 1.94–2.51 Å. In the second Mn2+ site, Mn2+ is bonded to five O2- atoms to form MnO5 square pyramids that share a cornercorner with one SiO4 tetrahedra and edges with two MnO6 octahedra. There are a spread of Mn–O bond distances ranging from 1.89–2.29 Å. In the third Mn2+ site, Mn2+ is bonded to five O2- atoms to form MnO5 trigonal bipyramids that share corners with five SiO4 tetrahedra and an edgeedge with one MnO5 trigonal bipyramid. There are a spread of Mn–O bond distances ranging from 1.96–2.37 Å. In the fourth Mn2+ site, Mn2+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Mn–O bond distances ranging from 1.94–2.22 Å. In the fifth Mn2+ site, Mn2+ is bonded to six O2- atoms to form distorted MnO6 octahedra that share corners with two equivalent SiO4 tetrahedra, edges with two equivalent MnO6 octahedra, and edges with two equivalent MnO5 square pyramids. There are a spread of Mn–O bond distances ranging from 1.93–2.53 Å. In the sixth Mn2+ site, Mn2+ is bonded to six O2- atoms to form distorted MnO6 octahedra that share corners with two equivalent SiO4 tetrahedra, edges with two equivalent MnO6 octahedra, and edges with two equivalent MnO5 square pyramids. There are a spread of Mn–O bond distances ranging from 2.23–2.43 Å. There are five inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Si–O bond distances ranging from 1.60–1.84 Å. In the second Si4+ site, Si4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Si–O bond distances ranging from 1.58–1.84 Å. In the third Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with three equivalent MnO5 trigonal bipyramids and an edgeedge with one SiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.60–1.74 Å. In the fourth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one MnO5 trigonal bipyramid and an edgeedge with one SiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.57–1.75 Å. In the fifth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two MnO6 octahedra, a cornercorner with one MnO5 square pyramid, and a cornercorner with one MnO5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 47–64°. There are a spread of Si–O bond distances ranging from 1.60–1.82 Å. There are fifteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to four Mn2+ atoms. In the second O2- site, O2- is bonded in a 1-coordinate geometry to three Mn2+ and one Si4+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to two Mn2+ and one Si4+ atom. In the fourth O2- site, O2- is bonded in a distorted linear geometry to one Mn2+ and one Si4+ atom. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Mn2+ and one Si4+ atom. In the sixth O2- site, O2- is bonded in a bent 120 degrees geometry to one Mn2+ and one Si4+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Mn2+ and one Si4+ atom. In the eighth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two Mn2+ and one Si4+ atom. In the ninth O2- site, O2- is bonded in a 3-coordinate geometry to two Mn2+ and one Si4+ atom. In the tenth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Mn2+ and one Si4+ atom. In the eleventh O2- site, O2- is bonded in a trigonal planar geometry to three Si4+ atoms. In the twelfth O2- site, O2- is bonded in a distorted T-shaped geometry to one Mn2+ and two Si4+ atoms. In the thirteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Mn2+ and one Si4+ atom. In the fourteenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Mn2+ and two Si4+ atoms. In the fifteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Mn2+ and one Si4+ atom.