NaPr2S2O8F3 crystallizes in the monoclinic C2/c space group. Na(1) is bonded in a 7-coordinate geometry to two equivalent O(2), two equivalent O(4), one F(2), and two equivalent F(1) atoms. Pr(1) is bonded in a 10-coordinate geometry to one O(2), one O(4), two equivalent O(1), two equivalent O(3), one F(2), and three equivalent F(1) atoms. S(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Pr(1) and one S(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(1), one Pr(1), and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Pr(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Na(1), one Pr(1), and one S(1) atom. There are two inequivalent F sites. In the first F site, F(1) is bonded to one Na(1) and three equivalent Pr(1) atoms to form a mixture of distorted face, corner, and edge-sharing FNaPr3 tetrahedra. In the second F site, F(2) is bonded in a trigonal planar geometry to one Na(1) and two equivalent Pr(1) atoms.
NaPr2S2O8F3 crystallizes in the monoclinic C2/c space group. Na(1) is bonded in a 7-coordinate geometry to two equivalent O(2), two equivalent O(4), one F(2), and two equivalent F(1) atoms. Both Na(1)-O(2) bond lengths are 2.48 Å. Both Na(1)-O(4) bond lengths are 2.62 Å. The Na(1)-F(2) bond length is 2.34 Å. Both Na(1)-F(1) bond lengths are 2.59 Å. Pr(1) is bonded in a 10-coordinate geometry to one O(2), one O(4), two equivalent O(1), two equivalent O(3), one F(2), and three equivalent F(1) atoms. The Pr(1)-O(2) bond length is 2.52 Å. The Pr(1)-O(4) bond length is 2.57 Å. There is one shorter (2.57 Å) and one longer (2.70 Å) Pr(1)-O(1) bond length. There is one shorter (2.60 Å) and one longer (2.72 Å) Pr(1)-O(3) bond length. The Pr(1)-F(2) bond length is 2.37 Å. There are a spread of Pr(1)-F(1) bond distances ranging from 2.42-2.57 Å. S(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. The S(1)-O(1) bond length is 1.50 Å. The S(1)-O(2) bond length is 1.48 Å. The S(1)-O(3) bond length is 1.49 Å. The S(1)-O(4) bond length is 1.48 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Pr(1) and one S(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(1), one Pr(1), and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Pr(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Na(1), one Pr(1), and one S(1) atom. There are two inequivalent F sites. In the first F site, F(1) is bonded to one Na(1) and three equivalent Pr(1) atoms to form a mixture of distorted face, corner, and edge-sharing FNaPr3 tetrahedra. In the second F site, F(2) is bonded in a trigonal planar geometry to one Na(1) and two equivalent Pr(1) atoms.