Rb2PrO3 is Krennerite-derived structured and crystallizes in the orthorhombic Cmc2_1 space group. Rb(1) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. Pr(1) is bonded to one O(2) and four equivalent O(1) atoms to form distorted edge-sharing PrO5 trigonal bipyramids. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Rb(1) and two equivalent Pr(1) atoms to form a mixture of distorted edge, face, and corner-sharing ORb4Pr2 octahedra. The corner-sharing octahedral tilt angles range from 38-48°. In the second O site, O(2) is bonded in a 5-coordinate geometry to four equivalent Rb(1) and one Pr(1) atom.
Rb2PrO3 is Krennerite-derived structured and crystallizes in the orthorhombic Cmc2_1 space group. Rb(1) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. There is one shorter (2.78 Å) and one longer (3.30 Å) Rb(1)-O(2) bond length. There are a spread of Rb(1)-O(1) bond distances ranging from 2.93-3.22 Å. Pr(1) is bonded to one O(2) and four equivalent O(1) atoms to form distorted edge-sharing PrO5 trigonal bipyramids. The Pr(1)-O(2) bond length is 2.23 Å. There are two shorter (2.35 Å) and two longer (2.37 Å) Pr(1)-O(1) bond lengths. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Rb(1) and two equivalent Pr(1) atoms to form a mixture of distorted edge, face, and corner-sharing ORb4Pr2 octahedra. The corner-sharing octahedral tilt angles range from 38-48°. In the second O site, O(2) is bonded in a 5-coordinate geometry to four equivalent Rb(1) and one Pr(1) atom.