DOI: 10.17188/1287656
title: Materials Data on Na5H3(CO3)4 by Materials Project

description: Na5H3(CO3)4 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are five inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Na–O bond distances ranging from 2.35–2.68 Å. In the second Na1+ site, Na1+ is bonded to five O2- atoms to form distorted NaO5 trigonal bipyramids that share corners with two equivalent NaO6 octahedra and edges with two equivalent NaO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 80–82°. There are a spread of Na–O bond distances ranging from 2.32–2.41 Å. In the third Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.35–2.52 Å. In the fourth Na1+ site, Na1+ is bonded to six O2- atoms to form distorted NaO6 octahedra that share a cornercorner with one NaO6 octahedra, corners with two equivalent NaO5 trigonal bipyramids, and edges with two equivalent NaO6 octahedra. The corner-sharing octahedral tilt angles are 91°. There are a spread of Na–O bond distances ranging from 2.39–2.54 Å. In the fifth Na1+ site, Na1+ is bonded to six O2- atoms to form a mixture of distorted edge and corner-sharing NaO6 octahedra. The corner-sharing octahedral tilt angles are 91°. There are a spread of Na–O bond distances ranging from 2.35–2.53 Å. There are four inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.27 Å) and one longer (1.37 Å) C–O bond length. In the second C4+ site, C4+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of C–O bond distances ranging from 1.28–1.33 Å. In the third C4+ site, C4+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.27 Å) and one longer (1.37 Å) C–O bond length. In the fourth C4+ site, C4+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of C–O bond distances ranging from 1.28–1.33 Å. There are four inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.04 Å) and one longer (1.57 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a linear geometry to two equivalent O2- atoms. Both H–O bond lengths are 1.23 Å. In the third H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.04 Å) and one longer (1.59 Å) H–O bond length. In the fourth H1+ site, H1+ is bonded in a linear geometry to two equivalent O2- atoms. Both H–O bond lengths are 1.23 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to three equivalent Na1+ and one C4+ atom. In the second O2- site, O2- is bonded to three Na1+ and one C4+ atom to form distorted corner-sharing ONa3C trigonal pyramids. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Na1+, one C4+, and one H1+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Na1+, one C4+, and one H1+ atom. In the fifth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to three Na1+ and one C4+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Na1+, one C4+, and one H1+ atom. In the seventh O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to three Na1+ and one C4+ atom. In the eighth O2- site, O2- is bonded in a 1-coordinate geometry to three Na1+ and one C4+ atom. In the ninth O2- site, O2- is bonded in a distorted water-like geometry to two Na1+, one C4+, and one H1+ atom. In the tenth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Na1+, one C4+, and one H1+ atom. In the eleventh O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to three Na1+ and one C4+ atom. In the twelfth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent Na1+, one C4+, and one H1+ atom.