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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on CsNa2(H5O3)3 by Materials Project

(CsNa2(H7O4)2)2H2O2 crystallizes in the orthorhombic Pca2_1 space group. The structure is three-dimensional and consists of four water molecules and one CsNa2(H7O4)2 framework. In the CsNa2(H7O4)2 framework, Cs1+ is bonded in a 3-coordinate geometry to six H1+ and seven O2- atoms. There are a spread of Cs–H bond distances ranging from 3.18–3.38 Å. There are a spread of Cs–O bond distances ranging from 3.26–3.44 Å. There are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Na–O bond distances ranging from 2.34–2.51 Å. In the second Na1+ site, Na1+ is bonded in a 2-coordinate geometry to two H1+ and six O2- atoms. There are one shorter (2.54 Å) and one longer (2.56 Å) Na–H bond lengths. There are a spread of Na–O bond distances ranging from 2.28–2.54 Å. There are fourteen 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 0.98 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the third H1+ site, H1+ is bonded in a distorted single-bond geometry to one O2- atom. The H–O bond length is 1.01 Å. In the fourth H1+ site, H1+ is bonded in a distorted single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the fifth H1+ site, H1+ is bonded in a distorted single-bond geometry to one O2- atom. The H–O bond length is 1.01 Å. In the sixth H1+ site, H1+ is bonded in a distorted single-bond geometry to one Na1+ and one O2- atom. The H–O bond length is 1.01 Å. In the seventh H1+ site, H1+ is bonded in a distorted single-bond geometry to one O2- atom. The H–O bond length is 1.01 Å. In the eighth 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 ninth H1+ site, H1+ is bonded in a distorted single-bond geometry to one Cs1+ and two O2- atoms. There is one shorter (1.01 Å) and one longer (1.63 Å) H–O bond length. In the tenth H1+ site, H1+ is bonded in a distorted single-bond geometry to one Cs1+ and one O2- atom. The H–O bond length is 1.01 Å. In the eleventh H1+ site, H1+ is bonded in a distorted single-bond geometry to one Cs1+, one Na1+, and one O2- atom. The H–O bond length is 1.01 Å. In the twelfth H1+ site, H1+ is bonded in a single-bond geometry to one Cs1+ and one O2- atom. The H–O bond length is 1.00 Å. In the thirteenth H1+ site, H1+ is bonded in a distorted single-bond geometry to one Cs1+ and one O2- atom. The H–O bond length is 1.01 Å. In the fourteenth H1+ site, H1+ is bonded in a single-bond geometry to one Cs1+ and one O2- atom. The H–O bond length is 1.00 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Cs1+ and two H1+ atoms. In the second O2- site, O2- is bonded in a single-bond geometry to one Cs1+ and one H1+ atom. In the third O2- site, O2- is bonded in a distorted water-like geometry to one Cs1+, one Na1+, and two H1+ atoms. In the fourth O2- site, O2- is bonded in a distorted water-like geometry to one Cs1+, two Na1+, and two H1+ atoms. In the fifth O2- site, O2- is bonded in a distorted water-like geometry to one Cs1+, two Na1+, and two H1+ atoms. In the sixth O2- site, O2- is bonded in a distorted water-like geometry to one Cs1+, two Na1+, and two H1+ atoms. In the seventh O2- site, O2- is bonded in a distorted water-like geometry to one Cs1+, two Na1+, and two H1+ atoms. In the eighth O2- site, O2- is bonded in a distorted water-like geometry to two Na1+ and two H1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CsNa2 by Materials Project

Na2Cs is Hexagonal Laves structured and crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. Cs is bonded in a 12-coordinate geometry to four equivalent Cs and twelve Na atoms. There are a spread of Cs–Cs bond distances ranging from 4.73–4.79 Å. There are a spread of Cs–Na bond distances ranging from 4.55–4.58 Å. There are four inequivalent Na sites. In the first Na site, Na is bonded to six equivalent Cs and six Na atoms to form a mixture of corner, edge, and face-sharing NaCs6Na6 cuboctahedra. There are two shorter (3.88 Å) and four longer (3.89 Å) Na–Na bond lengths. In the second Na site, Na is bonded to six equivalent Cs and six Na atoms to form a mixture of corner, edge, and face-sharing NaCs6Na6 cuboctahedra. There are a spread of Na–Na bond distances ranging from 3.89–3.91 Å. In the third Na site, Na is bonded to six equivalent Cs and six Na atoms to form a mixture of corner, edge, and face-sharing NaCs6Na6 cuboctahedra. There are one shorter (3.88 Å) and one longer (3.90 Å) Na–Na bond lengths. In the fourth Na site, Na is bonded to six equivalent Cs and six Na atoms to form a mixture of corner, edge, and face-sharing NaCs6Na6 cuboctahedra.

36 MATERIALS SCIENCE↗