Materials Data on ErCrHO5 by Materials Project
Er(OH)CrO4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Er3+ sites. In the first Er3+ site, Er3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Er–O bond distances ranging from 2.31–2.58 Å. In the second Er3+ site, Er3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Er–O bond distances ranging from 2.24–2.64 Å. There are two inequivalent Cr6+ sites. In the first Cr6+ site, Cr6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Cr–O bond distances ranging from 1.65–1.70 Å. In the second Cr6+ site, Cr6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Cr–O bond distances ranging from 1.65–1.69 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Er3+ and one Cr6+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Er3+ and one Cr6+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to two Er3+ and one Cr6+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Er3+ and one Cr6+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to three Er3+ and one H1+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Er3+ and one Cr6+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Er3+ and one Cr6+ atom. In the eighth O2- site, O2- is bonded in a 1-coordinate geometry to two Er3+ and one Cr6+ atom. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to three Er3+ and one H1+ atom. In the tenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Er3+ and one Cr6+ atom.