KNO3 crystallizes in the triclinic P1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. In the second K site, K(2) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and two equivalent O(6) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one O(2), one O(4), and one O(5) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one O(1), one O(3), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one K(1), one K(2), and one N(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one N(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one K(1), one K(2), and one N(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one N(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one N(1) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to two equivalent K(2) and one N(2) atom.
KNO3 crystallizes in the triclinic P1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. The K(1)-O(1) bond length is 2.78 Å. The K(1)-O(3) bond length is 2.78 Å. There is one shorter (2.99 Å) and one longer (3.03 Å) K(1)-O(2) bond length. There is one shorter (2.95 Å) and one longer (3.01 Å) K(1)-O(4) bond length. There is one shorter (2.94 Å) and one longer (2.98 Å) K(1)-O(5) bond length. In the second K site, K(2) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and two equivalent O(6) atoms. The K(2)-O(1) bond length is 2.76 Å. The K(2)-O(2) bond length is 2.98 Å. The K(2)-O(3) bond length is 2.79 Å. The K(2)-O(4) bond length is 3.00 Å. The K(2)-O(5) bond length is 3.00 Å. Both K(2)-O(6) bond lengths are 2.76 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one O(2), one O(4), and one O(5) atom. The N(1)-O(2) bond length is 1.28 Å. The N(1)-O(4) bond length is 1.27 Å. The N(1)-O(5) bond length is 1.27 Å. In the second N site, N(2) is bonded in a trigonal planar geometry to one O(1), one O(3), and one O(6) atom. The N(2)-O(1) bond length is 1.26 Å. The N(2)-O(3) bond length is 1.27 Å. The N(2)-O(6) bond length is 1.27 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one K(1), one K(2), and one N(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one N(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one K(1), one K(2), and one N(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one N(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one N(1) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to two equivalent K(2) and one N(2) atom.