Materials Data on Na2PrGeO5 by Materials Project

Abstract

Na2PrGeO5 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Na1+ is bonded in a 5-coordinate geometry to eight O2- atoms. There are a spread of Na–O bond distances ranging from 2.41–3.14 Å. Pr4+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Pr–O bond distances ranging from 2.41–2.62 Å. Ge4+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Ge–O bond distances ranging from 1.76–1.78 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to four equivalent Na1+, one Pr4+, and one Ge4+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Na1+, two equivalent Pr4+, and one Ge4+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to four equivalent Na1+, one Pr4+, and one Ge4+ atom. In the fourth O2- site, O2- is bonded in a distorted see-saw-like geometry to four equivalent Na1+ and two equivalent Pr4+ atoms.