DOI: 10.17188/1663773
title: Materials Data on Na2CaZr2Si10HO26 by Materials Project

description: Na2CaZr2Si10HO26 crystallizes in the monoclinic Cc space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of Na–O bond distances ranging from 2.32–3.02 Å. In the second Na1+ site, Na1+ is bonded in a bent 120 degrees geometry to two O2- atoms. There are one shorter (2.20 Å) and one longer (2.42 Å) Na–O bond lengths. Ca2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Ca–O bond distances ranging from 2.16–2.51 Å. There are two inequivalent Zr+3.50+ sites. In the first Zr+3.50+ site, Zr+3.50+ is bonded to five O2- atoms to form ZrO5 square pyramids that share corners with five SiO4 tetrahedra. There are a spread of Zr–O bond distances ranging from 1.99–2.18 Å. In the second Zr+3.50+ site, Zr+3.50+ is bonded to six O2- atoms to form ZrO6 octahedra that share corners with five SiO4 tetrahedra. There are a spread of Zr–O bond distances ranging from 2.04–2.21 Å. There are ten inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Si–O bond distances ranging from 1.62–1.68 Å. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one ZrO6 octahedra, a cornercorner with one ZrO5 square pyramid, and corners with two SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 46°. There are a spread of Si–O bond distances ranging from 1.62–1.65 Å. In the third Si4+ site, Si4+ is bonded to four O2- atoms to form corner-sharing SiO4 tetrahedra. There is three shorter (1.62 Å) and one longer (1.63 Å) Si–O bond length. In the fourth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one ZrO6 octahedra, a cornercorner with one ZrO5 square pyramid, and corners with two SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 49°. There are a spread of Si–O bond distances ranging from 1.62–1.66 Å. In the fifth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one ZrO6 octahedra and corners with three SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 55°. There are a spread of Si–O bond distances ranging from 1.62–1.65 Å. In the sixth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one ZrO5 square pyramid and corners with three SiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.61–1.65 Å. In the seventh Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one ZrO6 octahedra, a cornercorner with one ZrO5 square pyramid, and corners with two SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 53°. There is three shorter (1.63 Å) and one longer (1.69 Å) Si–O bond length. In the eighth Si4+ site, Si4+ is bonded to four O2- atoms to form corner-sharing SiO4 tetrahedra. There is three shorter (1.62 Å) and one longer (1.63 Å) Si–O bond length. In the ninth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one ZrO5 square pyramid and corners with three SiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.62–1.66 Å. In the tenth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one ZrO6 octahedra and corners with two SiO4 tetrahedra. The corner-sharing octahedral tilt angles are 45°. There are a spread of Si–O bond distances ranging from 1.61–1.68 Å. H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. There are twenty-six inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Zr+3.50+, and one Si4+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Na1+ and two Si4+ atoms. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the seventh O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Zr+3.50+, and one Si4+ atom. In the eighth O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the ninth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Zr+3.50+ and one Si4+ atom. In the tenth O2- site, O2- is bonded in a linear geometry to two Si4+ atoms. In the eleventh O2- site, O2- is bonded in a bent 120 degrees geometry to two Si4+ atoms. In the twelfth O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the thirteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Zr+3.50+, and one Si4+ atom. In the fourteenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Zr+3.50+ and one Si4+ atom. In the fifteenth O2- site, O2- is bonded in a 2-coordinate geometry to one Na1+ and two Si4+ atoms. In the sixteenth O2- site, O2- is bonded in a bent 120 degrees geometry to one Zr+3.50+ and one Si4+ atom. In the seventeenth O2- site, O2- is bonded in a bent 120 degrees geometry to two Si4+ atoms. In the eighteenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Zr+3.50+ and one Si4+ atom. In the nineteenth O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the twentieth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ca2+, one Zr+3.50+, and one Si4+ atom. In the twenty-first O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the twenty-second O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Ca2+, and one H1+ atom. In the twenty-third O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Zr+3.50+, and one Si4+ atom. In the twenty-fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Zr+3.50+ and one Si4+ atom. In the twenty-fifth O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the twenty-sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+, one Zr+3.50+, and one Si4+ atom.