LiPr2Zn2(PO)2 crystallizes in the trigonal R3m space group. Li(1) is bonded in a distorted single-bond geometry to one Zn(2), three equivalent P(1), and one O(1) atom. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 4-coordinate geometry to three equivalent P(2), one O(1), and three equivalent O(2) atoms. In the second Pr site, Pr(2) is bonded to one O(2) and three equivalent O(1) atoms to form corner-sharing PrO4 trigonal pyramids. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one P(1) and three equivalent P(2) atoms to form distorted corner-sharing ZnP4 tetrahedra. In the second Zn site, Zn(2) is bonded in a 5-coordinate geometry to one Li(1), one P(2), and three equivalent P(1) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 7-coordinate geometry to three equivalent Li(1), one Zn(1), and three equivalent Zn(2) atoms. In the second P site, P(2) is bonded in a 7-coordinate geometry to three equivalent Pr(1), one Zn(2), and three equivalent Zn(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Pr(1), and three equivalent Pr(2) atoms to form distorted OLiPr4 trigonal bipyramids that share corners with six equivalent O(1)LiPr4 trigonal bipyramids and edges with three equivalent O(2)Pr4 tetrahedra. In the second O site, O(2) is bonded to one Pr(2) and three equivalent Pr(1) atoms to form OPr4 tetrahedra that share corners with six equivalent O(2)Pr4 tetrahedra and edges with three equivalent O(1)LiPr4 trigonal bipyramids.
LiPr2Zn2(PO)2 crystallizes in the trigonal R3m space group. Li(1) is bonded in a distorted single-bond geometry to one Zn(2), three equivalent P(1), and one O(1) atom. The Li(1)-Zn(2) bond length is 2.21 Å. All Li(1)-P(1) bond lengths are 2.61 Å. The Li(1)-O(1) bond length is 1.90 Å. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 4-coordinate geometry to three equivalent P(2), one O(1), and three equivalent O(2) atoms. All Pr(1)-P(2) bond lengths are 3.12 Å. The Pr(1)-O(1) bond length is 2.66 Å. All Pr(1)-O(2) bond lengths are 2.44 Å. In the second Pr site, Pr(2) is bonded to one O(2) and three equivalent O(1) atoms to form corner-sharing PrO4 trigonal pyramids. The Pr(2)-O(2) bond length is 2.26 Å. All Pr(2)-O(1) bond lengths are 2.38 Å. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one P(1) and three equivalent P(2) atoms to form distorted corner-sharing ZnP4 tetrahedra. The Zn(1)-P(1) bond length is 2.81 Å. All Zn(1)-P(2) bond lengths are 2.46 Å. In the second Zn site, Zn(2) is bonded in a 5-coordinate geometry to one Li(1), one P(2), and three equivalent P(1) atoms. The Zn(2)-P(2) bond length is 2.35 Å. All Zn(2)-P(1) bond lengths are 2.63 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 7-coordinate geometry to three equivalent Li(1), one Zn(1), and three equivalent Zn(2) atoms. In the second P site, P(2) is bonded in a 7-coordinate geometry to three equivalent Pr(1), one Zn(2), and three equivalent Zn(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Pr(1), and three equivalent Pr(2) atoms to form distorted OLiPr4 trigonal bipyramids that share corners with six equivalent O(1)LiPr4 trigonal bipyramids and edges with three equivalent O(2)Pr4 tetrahedra. In the second O site, O(2) is bonded to one Pr(2) and three equivalent Pr(1) atoms to form OPr4 tetrahedra that share corners with six equivalent O(2)Pr4 tetrahedra and edges with three equivalent O(1)LiPr4 trigonal bipyramids.