Pr2SiTeO4 crystallizes in the orthorhombic Pbcm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 6-coordinate geometry to four equivalent Te(1), two equivalent O(2), and four equivalent O(1) atoms. In the second Pr site, Pr(2) is bonded in a 6-coordinate geometry to three equivalent Te(1), two equivalent O(1), and four equivalent O(2) atoms. Si(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. Te(1) is bonded in a 7-coordinate geometry to three equivalent Pr(2) and four equivalent Pr(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Pr(2), two equivalent Pr(1), and one Si(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Pr(1), two equivalent Pr(2), and one Si(1) atom.
Pr2SiTeO4 crystallizes in the orthorhombic Pbcm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 6-coordinate geometry to four equivalent Te(1), two equivalent O(2), and four equivalent O(1) atoms. There are two shorter (3.37 Å) and two longer (3.67 Å) Pr(1)-Te(1) bond lengths. Both Pr(1)-O(2) bond lengths are 2.53 Å. There are two shorter (2.54 Å) and two longer (2.56 Å) Pr(1)-O(1) bond lengths. In the second Pr site, Pr(2) is bonded in a 6-coordinate geometry to three equivalent Te(1), two equivalent O(1), and four equivalent O(2) atoms. There are a spread of Pr(2)-Te(1) bond distances ranging from 3.20-3.38 Å. Both Pr(2)-O(1) bond lengths are 2.63 Å. There are two shorter (2.49 Å) and two longer (2.52 Å) Pr(2)-O(2) bond lengths. Si(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Si(1)-O(1) bond lengths are 1.63 Å. Both Si(1)-O(2) bond lengths are 1.65 Å. Te(1) is bonded in a 7-coordinate geometry to three equivalent Pr(2) and four equivalent Pr(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Pr(2), two equivalent Pr(1), and one Si(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Pr(1), two equivalent Pr(2), and one Si(1) atom.