Materials Data on KPr6OsI10 by Materials Project
KPr6OsI10 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. K is bonded in a 5-coordinate geometry to five I atoms. There are a spread of K–I bond distances ranging from 3.66–4.15 Å. There are four inequivalent Pr sites. In the first Pr site, Pr is bonded to one Os and five I atoms to form a mixture of distorted edge and corner-sharing PrOsI5 octahedra. The corner-sharing octahedra tilt angles range from 1–48°. The Pr–Os bond length is 2.84 Å. There are a spread of Pr–I bond distances ranging from 3.21–3.51 Å. In the second Pr site, Pr is bonded to one Os and five I atoms to form a mixture of distorted edge and corner-sharing PrOsI5 octahedra. The corner-sharing octahedra tilt angles range from 1–49°. The Pr–Os bond length is 2.80 Å. There are a spread of Pr–I bond distances ranging from 3.23–3.61 Å. In the third Pr site, Pr is bonded to one Os and five I atoms to form a mixture of distorted edge and corner-sharing PrOsI5 octahedra. The corner-sharing octahedra tilt angles range from 1–49°. The Pr–Os bond length is 2.84 Å. There are a spread of Pr–I bond distances ranging from 3.22–3.50 Å. In the fourth Pr site, Pr is bonded to one Os and five I atoms to form a mixture of distorted edge and corner-sharing PrOsI5 octahedra. The corner-sharing octahedra tilt angles range from 1–45°. The Pr–Os bond length is 2.82 Å. There are a spread of Pr–I bond distances ranging from 3.24–3.49 Å. Os is bonded in an octahedral geometry to six Pr atoms. There are six inequivalent I sites. In the first I site, I is bonded in a see-saw-like geometry to four Pr atoms. In the second I site, I is bonded in a 3-coordinate geometry to three Pr atoms. In the third I site, I is bonded in a 3-coordinate geometry to one K and three Pr atoms. In the fourth I site, I is bonded in a distorted rectangular see-saw-like geometry to one K and three Pr atoms. In the fifth I site, I is bonded in a 3-coordinate geometry to three Pr atoms. In the sixth I site, I is bonded in a distorted T-shaped geometry to one K and two Pr atoms.