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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on K2CuH12(SO7)2 by Materials Project

K2CuH12(SO7)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. K1+ is bonded in a 9-coordinate geometry to one H1+ and eight O2- atoms. The K–H bond length is 2.94 Å. There are a spread of K–O bond distances ranging from 2.81–3.18 Å. Cu2+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Cu–O bond distances ranging from 1.96–2.40 Å. There are six inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.68 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a single-bond geometry to one K1+ and one O2- atom. The H–O bond length is 0.99 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the fourth H1+ site, H1+ is bonded in a distorted single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.65 Å) H–O bond length. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.75 Å) H–O bond length. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. S6+ is bonded in a tetrahedral geometry to four O2- atoms. There is one shorter (1.48 Å) and three longer (1.50 Å) S–O bond length. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one K1+ and one S6+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent K1+ and one S6+ atom. In the third O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Cu2+ and two H1+ atoms. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent K1+, one H1+, and one S6+ atom. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to one K1+, two H1+, and one S6+ atom. In the sixth O2- site, O2- is bonded in a distorted water-like geometry to one K1+, one Cu2+, and two H1+ atoms. In the seventh O2- site, O2- is bonded in a water-like geometry to one K1+, one Cu2+, and two H1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KCu2H3(SO5)2 by Materials Project

KCu2H3(SO5)2 crystallizes in the monoclinic Cm space group. The structure is three-dimensional. K1+ is bonded to eight O2- atoms to form distorted KO8 hexagonal bipyramids that share corners with four SO4 tetrahedra, edges with four equivalent CuO6 octahedra, and edges with two SO4 tetrahedra. There are a spread of K–O bond distances ranging from 2.75–2.87 Å. Cu2+ is bonded to six O2- atoms to form CuO6 octahedra that share corners with four SO4 tetrahedra, edges with two equivalent KO8 hexagonal bipyramids, and edges with two equivalent CuO6 octahedra. There are a spread of Cu–O bond distances ranging from 1.97–2.43 Å. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the third H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.08 Å) and one longer (1.42 Å) H–O bond length. There are two inequivalent S6+ sites. In the first S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share corners with two equivalent KO8 hexagonal bipyramids, corners with four equivalent CuO6 octahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedra tilt angles range from 43–48°. There are a spread of S–O bond distances ranging from 1.46–1.51 Å. In the second S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share corners with two equivalent KO8 hexagonal bipyramids, corners with four equivalent CuO6 octahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedra tilt angles range from 45–49°. There are a spread of S–O bond distances ranging from 1.46–1.51 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Cu2+, and one S6+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Cu2+, and one S6+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one K1+ and one S6+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one K1+ and one S6+ atom. In the fifth O2- site, O2- is bonded in a distorted water-like geometry to two equivalent Cu2+ and two H1+ atoms. In the sixth O2- site, O2- is bonded in a distorted tetrahedral geometry to two equivalent Cu2+ and two H1+ atoms. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, two equivalent Cu2+, and one S6+ atom. In the eighth O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, two equivalent Cu2+, and one S6+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KCu2H2(SO5)2 by Materials Project

KCu2H2(SO5)2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. K1+ is bonded to eight O2- atoms to form distorted KO8 hexagonal bipyramids that share corners with four equivalent SO4 tetrahedra, edges with four equivalent CuO6 octahedra, and edges with two equivalent SO4 tetrahedra. There are six shorter (2.82 Å) and two longer (2.96 Å) K–O bond lengths. Cu+2.50+ is bonded to six O2- atoms to form distorted CuO6 octahedra that share corners with four equivalent SO4 tetrahedra, edges with two equivalent KO8 hexagonal bipyramids, and edges with two equivalent CuO6 octahedra. There are a spread of Cu–O bond distances ranging from 1.89–2.50 Å. H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share corners with two equivalent KO8 hexagonal bipyramids, corners with four equivalent CuO6 octahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedra tilt angles range from 42–50°. There are a spread of S–O bond distances ranging from 1.46–1.52 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, two equivalent Cu+2.50+, and one S6+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Cu+2.50+, and one S6+ atom. In the third O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two equivalent Cu+2.50+ and one H1+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one K1+ and one S6+ atom.

36 MATERIALS SCIENCE↗