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Materials Data on K3Cu(NO3)5 by Materials Project

K3Cu(NO3)5 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 11-coordinate geometry to eleven O2- atoms. There are a spread of K–O bond distances ranging from 2.85–3.14 Å. In the second K1+ site, K1+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of K–O bond distances ranging from 2.79–3.38 Å. In the third K1+ site, K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.85–3.23 Å. Cu2+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Cu–O bond distances ranging from 1.99–2.02 Å. There are five inequivalent N5+ sites. In the first N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.24–1.31 Å. In the second N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.25–1.30 Å. In the third N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.24–1.31 Å. In the fourth N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.25 Å) and one longer (1.31 Å) N–O bond length. In the fifth N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. All N–O bond lengths are 1.27 Å. There are fifteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent K1+ and one N5+ atom. In the second O2- site, O2- is bonded in a distorted water-like geometry to one K1+, one Cu2+, and one N5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to three K1+ and one N5+ atom. In the fourth O2- site, O2- is bonded in a water-like geometry to one K1+, one Cu2+, and one N5+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to three K1+ and one N5+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to two K1+ and one N5+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to three K1+ and one N5+ atom. In the eighth O2- site, O2- is bonded in a distorted single-bond geometry to one K1+ and one N5+ atom. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to three K1+ and one N5+ atom. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to two K1+ and one N5+ atom. In the eleventh O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Cu2+, and one N5+ atom. In the twelfth O2- site, O2- is bonded in a single-bond geometry to two K1+ and one N5+ atom. In the thirteenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one K1+, one Cu2+, and one N5+ atom. In the fourteenth O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent K1+ and one N5+ atom. In the fifteenth O2- site, O2- is bonded in a distorted single-bond geometry to two K1+ and one N5+ atom.

36 MATERIALS SCIENCE↗

Materials Data on K3Cu(CN)4 by Materials Project

K3Cu(CN)4 crystallizes in the trigonal R3c space group. The structure is three-dimensional. K1+ is bonded in a 5-coordinate geometry to five N3- atoms. There are a spread of K–N bond distances ranging from 2.83–3.11 Å. Cu1+ is bonded in a tetrahedral geometry to four C2+ atoms. There is three shorter (1.95 Å) and one longer (1.96 Å) Cu–C bond length. There are two inequivalent C2+ sites. In the first C2+ site, C2+ is bonded in a distorted single-bond geometry to one Cu1+ and one N3- atom. The C–N bond length is 1.18 Å. In the second C2+ site, C2+ is bonded in a distorted single-bond geometry to one Cu1+ and one N3- atom. The C–N bond length is 1.18 Å. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded in a distorted single-bond geometry to four equivalent K1+ and one C2+ atom. In the second N3- site, N3- is bonded in a distorted single-bond geometry to three equivalent K1+ and one C2+ atom.

36 MATERIALS SCIENCE↗

Materials Data on K3Cu by Materials Project

K3Cu is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. K is bonded to eight equivalent K and four equivalent Cu atoms to form distorted KK8Cu4 cuboctahedra that share corners with twelve equivalent KK8Cu4 cuboctahedra, edges with eight equivalent CuK12 cuboctahedra, edges with sixteen equivalent KK8Cu4 cuboctahedra, faces with four equivalent CuK12 cuboctahedra, and faces with fourteen equivalent KK8Cu4 cuboctahedra. All K–K bond lengths are 4.11 Å. All K–Cu bond lengths are 4.11 Å. Cu is bonded to twelve equivalent K atoms to form distorted CuK12 cuboctahedra that share corners with twelve equivalent CuK12 cuboctahedra, edges with twenty-four equivalent KK8Cu4 cuboctahedra, faces with six equivalent CuK12 cuboctahedra, and faces with twelve equivalent KK8Cu4 cuboctahedra.

36 MATERIALS SCIENCE↗