KZn(BO2)3 crystallizes in the triclinic P-1 space group. K(1) is bonded in a 9-coordinate geometry to one O(1), one O(3), one O(4), two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms. Zn(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form ZnO4 tetrahedra that share corners with two equivalent B(3)O4 tetrahedra and  an edgeedge with one Zn(1)O4 tetrahedra. There are three inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(2), one O(5), and one O(6) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(6) atom. In the third B site, B(3) is bonded to one O(4), one O(5), and two equivalent O(1) atoms to form BO4 tetrahedra that share corners with two equivalent Zn(1)O4 tetrahedra and  an edgeedge with one B(3)O4 tetrahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one K(1), one Zn(1), and two equivalent B(3) atoms. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent K(1), one Zn(1), and one B(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), two equivalent Zn(1), and one B(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one K(1), one B(2), and one B(3) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to two equivalent K(1), one B(1), and one B(3) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to two equivalent K(1), one B(1), and one B(2) atom.
KZn(BO2)3 crystallizes in the triclinic P-1 space group. K(1) is bonded in a 9-coordinate geometry to one O(1), one O(3), one O(4), two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms. The K(1)-O(1) bond length is 2.85 Å. The K(1)-O(3) bond length is 3.01 Å. The K(1)-O(4) bond length is 2.89 Å. There is one shorter (2.68 Å) and one longer (3.16 Å) K(1)-O(2) bond length. There is one shorter (2.85 Å) and one longer (3.19 Å) K(1)-O(5) bond length. There is one shorter (2.89 Å) and one longer (2.92 Å) K(1)-O(6) bond length. Zn(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form ZnO4 tetrahedra that share corners with two equivalent B(3)O4 tetrahedra and  an edgeedge with one Zn(1)O4 tetrahedra. The Zn(1)-O(1) bond length is 1.97 Å. The Zn(1)-O(2) bond length is 1.92 Å. There is one shorter (1.99 Å) and one longer (2.08 Å) Zn(1)-O(3) bond length. There are three inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(2), one O(5), and one O(6) atom. The B(1)-O(2) bond length is 1.34 Å. The B(1)-O(5) bond length is 1.39 Å. The B(1)-O(6) bond length is 1.42 Å. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(6) atom. The B(2)-O(3) bond length is 1.37 Å. The B(2)-O(4) bond length is 1.37 Å. The B(2)-O(6) bond length is 1.41 Å. In the third B site, B(3) is bonded to one O(4), one O(5), and two equivalent O(1) atoms to form BO4 tetrahedra that share corners with two equivalent Zn(1)O4 tetrahedra and  an edgeedge with one B(3)O4 tetrahedra. The B(3)-O(4) bond length is 1.46 Å. The B(3)-O(5) bond length is 1.46 Å. There is one shorter (1.51 Å) and one longer (1.52 Å) B(3)-O(1) bond length. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one K(1), one Zn(1), and two equivalent B(3) atoms. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent K(1), one Zn(1), and one B(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), two equivalent Zn(1), and one B(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one K(1), one B(2), and one B(3) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to two equivalent K(1), one B(1), and one B(3) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to two equivalent K(1), one B(1), and one B(2) atom.