Materials Data on Na2CdH4(SO5)2 by Materials Project
Na2CdH4(SO5)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Na1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Na–O bond distances ranging from 2.36–2.90 Å. Cd2+ is bonded to six O2- atoms to form CdO6 octahedra that share corners with four equivalent SO4 tetrahedra. There are a spread of Cd–O bond distances ranging from 2.28–2.36 Å. There are two 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 1.00 Å. In the second 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 to four O2- atoms to form SO4 tetrahedra that share corners with two equivalent CdO6 octahedra. The corner-sharing octahedra tilt angles range from 45–55°. There are a spread of S–O bond distances ranging from 1.48–1.51 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to one Na1+, one Cd2+, and two H1+ atoms. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Na1+ and one S6+ atom. In the third O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Na1+, one Cd2+, and one S6+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Na1+, one Cd2+, and one S6+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Na1+ and one S6+ atom.