K2MgZn4P4(HO8)2 crystallizes in the triclinic P1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 5-coordinate geometry to one O(10), one O(15), one O(2), one O(6), and one O(7) atom. In the second K site, K(2) is bonded in a 5-coordinate geometry to one O(1), one O(16), one O(5), one O(8), and one O(9) atom. Mg(1) is bonded in a single-bond geometry to one O(13) atom. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(1), one O(13), one O(3), and one O(9) atom to form ZnO4 tetrahedra that share  a cornercorner with one Zn(3)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. In the second Zn site, Zn(2) is bonded to one O(10), one O(14), one O(2), and one O(4) atom to form ZnO4 tetrahedra that share  a cornercorner with one Zn(4)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. In the third Zn site, Zn(3) is bonded to one O(11), one O(3), one O(5), and one O(7) atom to form ZnO4 tetrahedra that share  a cornercorner with one Zn(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. In the fourth Zn site, Zn(4) is bonded to one O(12), one O(4), one O(6), and one O(8) atom to form ZnO4 tetrahedra that share  a cornercorner with one Zn(2)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)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(2), one O(3), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(1)O4 tetrahedra,  a cornercorner with one Zn(2)O4 tetrahedra,  a cornercorner with one Zn(4)O4 tetrahedra, and corners with two equivalent Zn(3)O4 tetrahedra. In the second P site, P(2) is bonded to one O(1), one O(4), one O(5), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(1)O4 tetrahedra,  a cornercorner with one Zn(2)O4 tetrahedra,  a cornercorner with one Zn(3)O4 tetrahedra, and corners with two equivalent Zn(4)O4 tetrahedra. In the third P site, P(3) is bonded to one O(11), one O(13), one O(15), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(3)O4 tetrahedra and corners with two equivalent Zn(1)O4 tetrahedra. In the fourth P site, P(4) is bonded to one O(10), one O(12), one O(14), and one O(16) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(4)O4 tetrahedra and corners with two equivalent Zn(2)O4 tetrahedra. There are two inequivalent H sites. In the first H site, H(1) is bonded in a distorted linear geometry to one O(12) and one O(15) atom. In the second H site, H(2) is bonded in a distorted single-bond geometry to one O(11) and one O(16) atom. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one K(2), one Zn(1), and one P(2) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one K(1), one Zn(2), and one P(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Zn(1), one Zn(3), and one P(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Zn(2), one Zn(4), and one P(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one K(2), one Zn(3), and one P(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one K(1), one Zn(4), and one P(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one K(1), one Zn(3), and one P(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one K(2), one Zn(4), and one P(2) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one K(2), one Zn(1), and one P(3) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one K(1), one Zn(2), and one P(4) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Zn(3), one P(3), and one H(2) atom. In the twelfth O site, O(12) is bonded in a trigonal planar geometry to one Zn(4), one P(4), and one H(1) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Zn(1), and one P(3) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 120 degrees geometry to one Zn(2) and one P(4) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 120 degrees geometry to one K(1), one P(3), and one H(1) atom. In the sixteenth O site, O(16) is bonded in a distorted bent 120 degrees geometry to one K(2), one P(4), and one H(2) atom.
K2MgZn4P4(HO8)2 crystallizes in the triclinic P1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 5-coordinate geometry to one O(10), one O(15), one O(2), one O(6), and one O(7) atom. The K(1)-O(10) bond length is 2.75 Å. The K(1)-O(15) bond length is 2.97 Å. The K(1)-O(2) bond length is 3.06 Å. The K(1)-O(6) bond length is 2.84 Å. The K(1)-O(7) bond length is 2.74 Å. In the second K site, K(2) is bonded in a 5-coordinate geometry to one O(1), one O(16), one O(5), one O(8), and one O(9) atom. The K(2)-O(1) bond length is 3.13 Å. The K(2)-O(16) bond length is 2.80 Å. The K(2)-O(5) bond length is 2.80 Å. The K(2)-O(8) bond length is 2.81 Å. The K(2)-O(9) bond length is 2.90 Å. Mg(1) is bonded in a single-bond geometry to one O(13) atom. The Mg(1)-O(13) bond length is 2.17 Å. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(1), one O(13), one O(3), and one O(9) atom to form ZnO4 tetrahedra that share  a cornercorner with one Zn(3)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. The Zn(1)-O(1) bond length is 1.93 Å. The Zn(1)-O(13) bond length is 2.01 Å. The Zn(1)-O(3) bond length is 1.98 Å. The Zn(1)-O(9) bond length is 1.98 Å. In the second Zn site, Zn(2) is bonded to one O(10), one O(14), one O(2), and one O(4) atom to form ZnO4 tetrahedra that share  a cornercorner with one Zn(4)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. The Zn(2)-O(10) bond length is 1.97 Å. The Zn(2)-O(14) bond length is 1.93 Å. The Zn(2)-O(2) bond length is 1.95 Å. The Zn(2)-O(4) bond length is 2.04 Å. In the third Zn site, Zn(3) is bonded to one O(11), one O(3), one O(5), and one O(7) atom to form ZnO4 tetrahedra that share  a cornercorner with one Zn(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. The Zn(3)-O(11) bond length is 2.00 Å. The Zn(3)-O(3) bond length is 2.05 Å. The Zn(3)-O(5) bond length is 1.94 Å. The Zn(3)-O(7) bond length is 1.95 Å. In the fourth Zn site, Zn(4) is bonded to one O(12), one O(4), one O(6), and one O(8) atom to form ZnO4 tetrahedra that share  a cornercorner with one Zn(2)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The Zn(4)-O(12) bond length is 1.99 Å. The Zn(4)-O(4) bond length is 2.04 Å. The Zn(4)-O(6) bond length is 1.96 Å. The Zn(4)-O(8) bond length is 1.96 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(1)O4 tetrahedra,  a cornercorner with one Zn(2)O4 tetrahedra,  a cornercorner with one Zn(4)O4 tetrahedra, and corners with two equivalent Zn(3)O4 tetrahedra. The P(1)-O(2) bond length is 1.53 Å. The P(1)-O(3) bond length is 1.60 Å. The P(1)-O(6) bond length is 1.55 Å. The P(1)-O(7) bond length is 1.54 Å. In the second P site, P(2) is bonded to one O(1), one O(4), one O(5), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(1)O4 tetrahedra,  a cornercorner with one Zn(2)O4 tetrahedra,  a cornercorner with one Zn(3)O4 tetrahedra, and corners with two equivalent Zn(4)O4 tetrahedra. The P(2)-O(1) bond length is 1.54 Å. The P(2)-O(4) bond length is 1.58 Å. The P(2)-O(5) bond length is 1.55 Å. The P(2)-O(8) bond length is 1.54 Å. In the third P site, P(3) is bonded to one O(11), one O(13), one O(15), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(3)O4 tetrahedra and corners with two equivalent Zn(1)O4 tetrahedra. The P(3)-O(11) bond length is 1.55 Å. The P(3)-O(13) bond length is 1.56 Å. The P(3)-O(15) bond length is 1.60 Å. The P(3)-O(9) bond length is 1.53 Å. In the fourth P site, P(4) is bonded to one O(10), one O(12), one O(14), and one O(16) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(4)O4 tetrahedra and corners with two equivalent Zn(2)O4 tetrahedra. The P(4)-O(10) bond length is 1.54 Å. The P(4)-O(12) bond length is 1.57 Å. The P(4)-O(14) bond length is 1.52 Å. The P(4)-O(16) bond length is 1.61 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a distorted linear geometry to one O(12) and one O(15) atom. The H(1)-O(12) bond length is 1.62 Å. The H(1)-O(15) bond length is 1.02 Å. In the second H site, H(2) is bonded in a distorted single-bond geometry to one O(11) and one O(16) atom. The H(2)-O(11) bond length is 1.70 Å. The H(2)-O(16) bond length is 1.01 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one K(2), one Zn(1), and one P(2) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one K(1), one Zn(2), and one P(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Zn(1), one Zn(3), and one P(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Zn(2), one Zn(4), and one P(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one K(2), one Zn(3), and one P(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one K(1), one Zn(4), and one P(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one K(1), one Zn(3), and one P(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one K(2), one Zn(4), and one P(2) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one K(2), one Zn(1), and one P(3) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one K(1), one Zn(2), and one P(4) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Zn(3), one P(3), and one H(2) atom. In the twelfth O site, O(12) is bonded in a trigonal planar geometry to one Zn(4), one P(4), and one H(1) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Zn(1), and one P(3) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 120 degrees geometry to one Zn(2) and one P(4) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 120 degrees geometry to one K(1), one P(3), and one H(1) atom. In the sixteenth O site, O(16) is bonded in a distorted bent 120 degrees geometry to one K(2), one P(4), and one H(2) atom.