KCNH3 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 10-coordinate geometry to four equivalent C(1), two equivalent N(1), one H(2), one H(3), and two equivalent H(1) atoms. C(1) is bonded in a 5-coordinate geometry to four equivalent K(1) and one C(1) atom. N(1) is bonded in a trigonal non-coplanar geometry to two equivalent K(1), one H(1), one H(2), and one H(3) atom. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to two equivalent K(1) and one N(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one K(1) and one N(1) atom. In the third H site, H(3) is bonded in a single-bond geometry to one K(1) and one N(1) atom.
KCNH3 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 10-coordinate geometry to four equivalent C(1), two equivalent N(1), one H(2), one H(3), and two equivalent H(1) atoms. There are a spread of K(1)-C(1) bond distances ranging from 3.01-3.20 Å. There is one shorter (2.91 Å) and one longer (2.98 Å) K(1)-N(1) bond length. The K(1)-H(2) bond length is 2.79 Å. The K(1)-H(3) bond length is 3.00 Å. There is one shorter (2.87 Å) and one longer (3.12 Å) K(1)-H(1) bond length. C(1) is bonded in a 5-coordinate geometry to four equivalent K(1) and one C(1) atom. The C(1)-C(1) bond length is 1.27 Å. N(1) is bonded in a trigonal non-coplanar geometry to two equivalent K(1), one H(1), one H(2), and one H(3) atom. The N(1)-H(1) bond length is 1.04 Å. The N(1)-H(2) bond length is 1.03 Å. The N(1)-H(3) bond length is 1.02 Å. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to two equivalent K(1) and one N(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one K(1) and one N(1) atom. In the third H site, H(3) is bonded in a single-bond geometry to one K(1) and one N(1) atom.