KCu(CN)2 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 11-coordinate geometry to two equivalent C(1), three equivalent C(2), three equivalent N(1), and three equivalent N(2) atoms. Cu(1) is bonded to one C(2), two equivalent C(1), and one N(2) atom to form distorted edge-sharing CuC3N tetrahedra. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 3-coordinate geometry to two equivalent K(1), two equivalent Cu(1), and one N(2) atom. In the second C site, C(2) is bonded in a distorted linear geometry to three equivalent K(1), one Cu(1), and one N(1) atom. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted single-bond geometry to three equivalent K(1) and one C(2) atom. In the second N site, N(2) is bonded in a distorted bent 150 degrees geometry to three equivalent K(1), one Cu(1), and one C(1) atom.
KCu(CN)2 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 11-coordinate geometry to two equivalent C(1), three equivalent C(2), three equivalent N(1), and three equivalent N(2) atoms. There is one shorter (3.25 Å) and one longer (3.34 Å) K(1)-C(1) bond length. There are a spread of K(1)-C(2) bond distances ranging from 3.14-3.38 Å. There are a spread of K(1)-N(1) bond distances ranging from 2.82-3.11 Å. There are a spread of K(1)-N(2) bond distances ranging from 3.14-3.32 Å. Cu(1) is bonded to one C(2), two equivalent C(1), and one N(2) atom to form distorted edge-sharing CuC3N tetrahedra. The Cu(1)-C(2) bond length is 1.90 Å. There is one shorter (1.92 Å) and one longer (2.31 Å) Cu(1)-C(1) bond length. The Cu(1)-N(2) bond length is 2.00 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 3-coordinate geometry to two equivalent K(1), two equivalent Cu(1), and one N(2) atom. The C(1)-N(2) bond length is 1.19 Å. In the second C site, C(2) is bonded in a distorted linear geometry to three equivalent K(1), one Cu(1), and one N(1) atom. The C(2)-N(1) bond length is 1.18 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted single-bond geometry to three equivalent K(1) and one C(2) atom. In the second N site, N(2) is bonded in a distorted bent 150 degrees geometry to three equivalent K(1), one Cu(1), and one C(1) atom.