Materials Data on KCdC3(NO)3 by Materials Project
KCdC3(NO)3 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. K1+ is bonded in a 7-coordinate geometry to three N3- and five O2- atoms. There are two shorter (2.89 Å) and one longer (3.33 Å) K–N bond lengths. There are a spread of K–O bond distances ranging from 2.78–2.99 Å. Cd2+ is bonded to six N3- atoms to form edge-sharing CdN6 octahedra. There are a spread of Cd–N bond distances ranging from 2.27–2.54 Å. There are three inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a linear geometry to one N3- and one O2- atom. The C–N bond length is 1.22 Å. The C–O bond length is 1.20 Å. In the second C4+ site, C4+ is bonded in a linear geometry to one N3- and one O2- atom. The C–N bond length is 1.21 Å. The C–O bond length is 1.21 Å. In the third C4+ site, C4+ is bonded in a linear geometry to one N3- and one O2- atom. The C–N bond length is 1.21 Å. The C–O bond length is 1.21 Å. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded in a 4-coordinate geometry to two equivalent K1+, one Cd2+, and one C4+ atom. In the second N3- site, N3- is bonded in a 3-coordinate geometry to one K1+, two equivalent Cd2+, and one C4+ atom. In the third N3- site, N3- is bonded in a 4-coordinate geometry to three equivalent Cd2+ and one C4+ atom. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent K1+ and one C4+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent K1+ and one C4+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one K1+ and one C4+ atom.