LiKZnP2O7 crystallizes in the monoclinic Pc space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 9-coordinate geometry to one O(11), one O(4), one O(9), two equivalent O(10), two equivalent O(13), and two equivalent O(14) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to one O(1), one O(7), two equivalent O(12), two equivalent O(5), and two equivalent O(6) atoms. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(13), one O(2), one O(4), and one O(7) atom to form LiO4 tetrahedra that share corners with two equivalent Zn(2)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(14), one O(3), one O(5), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent Zn(1)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(10), one O(3), one O(6), and one O(8) atom to form ZnO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. In the second Zn site, Zn(2) is bonded to one O(11), one O(12), one O(2), and one O(4) atom to form ZnO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(13), one O(4), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, and corners with two equivalent Zn(2)O4 tetrahedra. In the second P site, P(2) is bonded to one O(1), one O(12), one O(2), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, and corners with two equivalent Zn(2)O4 tetrahedra. In the third P site, P(3) is bonded to one O(10), one O(14), one O(3), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, and corners with two equivalent Zn(1)O4 tetrahedra. In the fourth P site, P(4) is bonded to one O(1), one O(5), one O(6), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, and corners with two equivalent Zn(1)O4 tetrahedra. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one K(2), one P(2), and one P(4) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(1), one Zn(2), and one P(2) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Li(2), one Zn(1), and one P(3) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one K(1), one Li(1), one Zn(2), and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to two equivalent K(2), one Li(2), and one P(4) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to two equivalent K(2), one Zn(1), and one P(4) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one K(2), one Li(1), and one P(2) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Li(2), one Zn(1), and one P(4) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one K(1), one P(1), and one P(3) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to two equivalent K(1), one Zn(1), and one P(3) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one K(1), one Zn(2), and one P(1) atom. In the twelfth O site, O(12) is bonded in a 2-coordinate geometry to two equivalent K(2), one Zn(2), and one P(2) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 150 degrees geometry to two equivalent K(1), one Li(1), and one P(1) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 120 degrees geometry to two equivalent K(1), one Li(2), and one P(3) atom.
LiKZnP2O7 crystallizes in the monoclinic Pc space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 9-coordinate geometry to one O(11), one O(4), one O(9), two equivalent O(10), two equivalent O(13), and two equivalent O(14) atoms. The K(1)-O(11) bond length is 2.79 Å. The K(1)-O(4) bond length is 3.20 Å. The K(1)-O(9) bond length is 3.17 Å. There is one shorter (3.05 Å) and one longer (3.28 Å) K(1)-O(10) bond length. There is one shorter (3.22 Å) and one longer (3.24 Å) K(1)-O(13) bond length. There is one shorter (3.12 Å) and one longer (3.18 Å) K(1)-O(14) bond length. In the second K site, K(2) is bonded in a 8-coordinate geometry to one O(1), one O(7), two equivalent O(12), two equivalent O(5), and two equivalent O(6) atoms. The K(2)-O(1) bond length is 3.16 Å. The K(2)-O(7) bond length is 2.93 Å. There is one shorter (3.17 Å) and one longer (3.31 Å) K(2)-O(12) bond length. There is one shorter (2.98 Å) and one longer (3.21 Å) K(2)-O(5) bond length. There is one shorter (3.04 Å) and one longer (3.13 Å) K(2)-O(6) bond length. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(13), one O(2), one O(4), and one O(7) atom to form LiO4 tetrahedra that share corners with two equivalent Zn(2)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The Li(1)-O(13) bond length is 1.93 Å. The Li(1)-O(2) bond length is 1.99 Å. The Li(1)-O(4) bond length is 2.01 Å. The Li(1)-O(7) bond length is 1.92 Å. In the second Li site, Li(2) is bonded to one O(14), one O(3), one O(5), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent Zn(1)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. The Li(2)-O(14) bond length is 1.94 Å. The Li(2)-O(3) bond length is 1.98 Å. The Li(2)-O(5) bond length is 1.94 Å. The Li(2)-O(8) bond length is 2.01 Å. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(10), one O(3), one O(6), and one O(8) atom to form ZnO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. The Zn(1)-O(10) bond length is 1.95 Å. The Zn(1)-O(3) bond length is 2.00 Å. The Zn(1)-O(6) bond length is 1.96 Å. The Zn(1)-O(8) bond length is 1.97 Å. In the second Zn site, Zn(2) is bonded to one O(11), one O(12), one O(2), and one O(4) atom to form ZnO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The Zn(2)-O(11) bond length is 1.97 Å. The Zn(2)-O(12) bond length is 1.96 Å. The Zn(2)-O(2) bond length is 1.99 Å. The Zn(2)-O(4) bond length is 2.00 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(13), one O(4), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, and corners with two equivalent Zn(2)O4 tetrahedra. The P(1)-O(11) bond length is 1.54 Å. The P(1)-O(13) bond length is 1.51 Å. The P(1)-O(4) bond length is 1.55 Å. The P(1)-O(9) bond length is 1.64 Å. In the second P site, P(2) is bonded to one O(1), one O(12), one O(2), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, and corners with two equivalent Zn(2)O4 tetrahedra. The P(2)-O(1) bond length is 1.64 Å. The P(2)-O(12) bond length is 1.54 Å. The P(2)-O(2) bond length is 1.55 Å. The P(2)-O(7) bond length is 1.51 Å. In the third P site, P(3) is bonded to one O(10), one O(14), one O(3), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, and corners with two equivalent Zn(1)O4 tetrahedra. The P(3)-O(10) bond length is 1.55 Å. The P(3)-O(14) bond length is 1.51 Å. The P(3)-O(3) bond length is 1.55 Å. The P(3)-O(9) bond length is 1.64 Å. In the fourth P site, P(4) is bonded to one O(1), one O(5), one O(6), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, and corners with two equivalent Zn(1)O4 tetrahedra. The P(4)-O(1) bond length is 1.64 Å. The P(4)-O(5) bond length is 1.51 Å. The P(4)-O(6) bond length is 1.54 Å. The P(4)-O(8) bond length is 1.55 Å. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one K(2), one P(2), and one P(4) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(1), one Zn(2), and one P(2) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Li(2), one Zn(1), and one P(3) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one K(1), one Li(1), one Zn(2), and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to two equivalent K(2), one Li(2), and one P(4) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to two equivalent K(2), one Zn(1), and one P(4) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one K(2), one Li(1), and one P(2) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Li(2), one Zn(1), and one P(4) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one K(1), one P(1), and one P(3) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to two equivalent K(1), one Zn(1), and one P(3) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one K(1), one Zn(2), and one P(1) atom. In the twelfth O site, O(12) is bonded in a 2-coordinate geometry to two equivalent K(2), one Zn(2), and one P(2) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 150 degrees geometry to two equivalent K(1), one Li(1), and one P(1) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 120 degrees geometry to two equivalent K(1), one Li(2), and one P(3) atom.