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DOE OSTI2020

Materials Data on H8Se(NO2)2 by Materials Project

(NH4)2SeO4 is Iron carbide-derived structured and crystallizes in the monoclinic C2/m space group. The structure is zero-dimensional and consists of eight ammonium molecules and four SeO4 clusters. In each SeO4 cluster, Se2- is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Se–O bond distances ranging from 1.67–1.69 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Se2- atom. In the second O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Se2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H7Se2NO6 by Materials Project

NH4H3(SeO3)2 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional and consists of four ammonium molecules and one H3(SeO3)2 framework. In the H3(SeO3)2 framework, there are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.04 Å) and one longer (1.55 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.03 Å) and one longer (1.57 Å) H–O bond length. In the third H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.02 Å) and one longer (1.61 Å) H–O bond length. There are two inequivalent Se1+ sites. In the first Se1+ site, Se1+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.69 Å) and two longer (1.79 Å) Se–O bond length. In the second Se1+ site, Se1+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is two shorter (1.71 Å) and one longer (1.80 Å) Se–O bond length. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to one H1+ and one Se1+ atom. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one H1+ and one Se1+ atom. In the third O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se1+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one H1+ and one Se1+ atom. In the fifth O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se1+ atom. In the sixth O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se1+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H2SeNO4 by Materials Project

H6Se3(NO5)2NO2 crystallizes in the monoclinic C2 space group. The structure is zero-dimensional and consists of two nitrous acid molecules and two H6Se3(NO5)2 clusters. In each H6Se3(NO5)2 cluster, N is bonded in a distorted trigonal planar geometry to two H and one O atom. There is one shorter (1.04 Å) and one longer (1.73 Å) N–H bond length. The N–O bond length is 1.33 Å. There are three inequivalent H sites. In the first H site, H is bonded in a distorted single-bond geometry to one N and one O atom. The H–O bond length is 1.02 Å. In the second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the third H site, H is bonded in a single-bond geometry to one N atom. There are two inequivalent Se sites. In the first Se site, Se is bonded in a tetrahedral geometry to four O atoms. There is two shorter (1.63 Å) and two longer (1.78 Å) Se–O bond length. In the second Se site, Se is bonded in a distorted trigonal non-coplanar geometry to three O atoms. There are a spread of Se–O bond distances ranging from 1.62–1.98 Å. There are five inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one Se atom. In the second O site, O is bonded in a water-like geometry to one H and one Se atom. In the third O site, O is bonded in a single-bond geometry to one Se atom. In the fourth O site, O is bonded in a water-like geometry to one H and one Se atom. In the fifth O site, O is bonded in a bent 120 degrees geometry to one N and one Se atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HSeNO4 by Materials Project

N2(HSeO4)2 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is one-dimensional and consists of four ammonia molecules and four HSeO4 ribbons oriented in the (1, 0, 0) direction. In each HSeO4 ribbon, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.03 Å) and one longer (1.56 Å) H–O bond length. Se4+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Se–O bond distances ranging from 1.65–1.74 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Se4+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one Se4+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one H1+ and one Se4+ atom. In the fourth O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H13Se2N3O8 by Materials Project

NH4H9Se2(NO4)2 crystallizes in the monoclinic Cc space group. The structure is zero-dimensional and consists of four ammonium molecules and four H9Se2(NO4)2 clusters. In each H9Se2(NO4)2 cluster, there are two inequivalent N+2.33+ sites. In the first N+2.33+ site, N+2.33+ is bonded in a tetrahedral geometry to four H1+ atoms. There are a spread of N–H bond distances ranging from 1.03–1.05 Å. In the second N+2.33+ site, N+2.33+ is bonded in a tetrahedral geometry to four H1+ atoms. There are a spread of N–H bond distances ranging from 1.02–1.06 Å. There are nine inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ and one O2- atom. The H–O bond length is 1.74 Å. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ atom. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ and one O2- atom. The H–O bond length is 1.69 Å. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ atom. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ atom. In the ninth H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.07 Å) and one longer (1.47 Å) H–O bond length. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Se–O bond distances ranging from 1.65–1.75 Å. In the second Se2- site, Se2- is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Se–O bond distances ranging from 1.67–1.70 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se2- atom. In the second O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one H1+ and one Se2- atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to one H1+ and one Se2- atom. In the sixth O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Se2- atom. In the eighth O2- site, O2- is bonded in a bent 120 degrees geometry to one H1+ and one Se2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H8Se2N2O5 by Materials Project

(NH4)2Se2O5 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is zero-dimensional and consists of eight ammonium molecules and four Se2O5 clusters. In each Se2O5 cluster, there are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There are a spread of Se–O bond distances ranging from 1.68–1.87 Å. In the second Se2- site, Se2- is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There are a spread of Se–O bond distances ranging from 1.68–1.90 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Se2- atom. In the third O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to two Se2- atoms. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Se2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H13Se2N3O8 by Materials Project

NH4H9Se2(NO4)2 crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of four ammonium molecules and four H9Se2(NO4)2 clusters. In each H9Se2(NO4)2 cluster, N+2.33+ is bonded in a tetrahedral geometry to four H1+ atoms. There are a spread of N–H bond distances ranging from 1.03–1.05 Å. There are five inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ and one O2- atom. The H–O bond length is 1.75 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ atom. In the fifth H1+ site, H1+ is bonded in a linear geometry to two equivalent O2- atoms. Both H–O bond lengths are 1.22 Å. Se2- is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Se–O bond distances ranging from 1.66–1.72 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a water-like geometry to one H1+ and one Se2- atom. In the second O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the third O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one H1+ and one Se2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H13Se2N3O8 by Materials Project

NH3NHONH7Se2O6H2O crystallizes in the monoclinic Cc space group. The structure is zero-dimensional and consists of four ammonia molecules, four nitroxyl molecules, four water molecules, and four NH7Se2O6 clusters. In each NH7Se2O6 cluster, N+2.33+ is bonded in a tetrahedral geometry to four H1+ atoms. There are a spread of N–H bond distances ranging from 1.03–1.09 Å. There are seven 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 N+2.33+ atom. In the third H1+ site, H1+ is bonded in a linear geometry to one N+2.33+ and one O2- atom. The H–O bond length is 1.49 Å. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ atom. In the sixth 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 seventh H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.05 Å) and one longer (1.52 Å) H–O bond length. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There are a spread of Se–O bond distances ranging from 1.69–1.85 Å. In the second Se2- site, Se2- is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There are a spread of Se–O bond distances ranging from 1.65–1.83 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to one H1+ and one Se2- atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one H1+ and one Se2- atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one H1+ and one Se2- atom. In the fourth O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se2- atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one H1+ and one Se2- atom. In the sixth O2- site, O2- is bonded in a single-bond geometry to one Se2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H8Se2N2O5 by Materials Project

(NH4)2Se2O5 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is zero-dimensional and consists of eight ammonium molecules and four Se2O5 clusters. In each Se2O5 cluster, there are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There are a spread of Se–O bond distances ranging from 1.69–1.87 Å. In the second Se2- site, Se2- is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There is two shorter (1.69 Å) and one longer (1.91 Å) Se–O bond length. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the second O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the third O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to two Se2- atoms. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Se2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H13Se2N3O8 by Materials Project

H2N3H9Se2O7H2O crystallizes in the monoclinic Cc space group. The structure is zero-dimensional and consists of four hydrogen molecules, four water molecules, and four N3H9Se2O7 clusters. In each N3H9Se2O7 cluster, there are three inequivalent N+2.33+ sites. In the first N+2.33+ site, N+2.33+ is bonded in a distorted single-bond geometry to one Se2- and one O2- atom. The N–Se bond length is 2.28 Å. The N–O bond length is 1.19 Å. In the second N+2.33+ site, N+2.33+ is bonded in a distorted trigonal non-coplanar geometry to one H1+, one Se2-, and one O2- atom. The N–H bond length is 1.03 Å. The N–Se bond length is 1.95 Å. The N–O bond length is 1.40 Å. In the third N+2.33+ site, N+2.33+ is bonded in a tetrahedral geometry to four H1+ atoms. There are a spread of N–H bond distances ranging from 1.04–1.06 Å. There are nine 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 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 single-bond geometry to one N+2.33+ atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ atom. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ atom. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ and one O2- atom. The H–O bond length is 1.77 Å. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ atom. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.72 Å) H–O bond length. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a rectangular see-saw-like geometry to one N+2.33+ and three O2- atoms. There are a spread of Se–O bond distances ranging from 1.80–2.07 Å. In the second Se2- site, Se2- is bonded in a 2-coordinate geometry to one N+2.33+ and two O2- atoms. Both Se–O bond lengths are 1.70 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one H1+ and one Se2- atom. In the second O2- site, O2- is bonded in a single-bond geometry to one N+2.33+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one H1+ and one Se2- atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one H1+ and one Se2- atom. In the fifth O2- site, O2- is bonded in a water-like geometry to one N+2.33+ and one H1+ atom. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to two H1+ and one Se2- atom. In the seventh O2- site, O2- is bonded in a single-bond geometry to one Se2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H18Se3(NO3)4 by Materials Project

(NH4)4H2(SeO4)3 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of eight ammonium molecules and two H2(SeO4)3 clusters. In each H2(SeO4)3 cluster, there are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.04 Å) and one longer (1.52 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.03 Å) and one longer (1.55 Å) H–O bond length. There are three inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a tetrahedral geometry to four O2- atoms. There is one shorter (1.67 Å) and three longer (1.68 Å) Se–O bond length. In the second Se2- site, Se2- is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Se–O bond distances ranging from 1.65–1.76 Å. In the third Se2- site, Se2- is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Se–O bond distances ranging from 1.65–1.77 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the second O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the third O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se2- atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the fifth O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one H1+ and one Se2- atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Se2- atom. In the eighth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one H1+ and one Se2- atom. In the ninth O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the tenth O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se2- atom. In the eleventh O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the twelfth O2- site, O2- is bonded in a single-bond geometry to one Se2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H5SeNO4 by Materials Project

NH4HSeO4 crystallizes in the monoclinic C2 space group. The structure is one-dimensional and consists of six ammonium molecules and six HSeO4 ribbons oriented in the (0, 0, 1) direction. In each HSeO4 ribbon, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.03 Å) and one longer (1.54 Å) H–O bond length. Se2- is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Se–O bond distances ranging from 1.64–1.76 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se2- atom. In the second O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the third O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one H1+ and one Se2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H5SeNO4 by Materials Project

NH4HSeO4 crystallizes in the triclinic P1 space group. The structure is one-dimensional and consists of three ammonium molecules and three HSeO4 ribbons oriented in the (1, 0, 0) direction. In each HSeO4 ribbon, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.03 Å) and one longer (1.58 Å) H–O bond length. Se2- is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Se–O bond distances ranging from 1.64–1.77 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one H1+ and one Se2- atom. In the third O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se2- atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one Se2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H18Se3(NO3)4 by Materials Project

(NH3)2(N2H)2H2(HNO2)2(H2O)4(H3SeO3)4(H2SeO2)2 is Magnesium tetraboride-derived structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two ammonia molecules; two diazene molecules; two hydrogen molecules; two hydroxylamine, n-hydroxy- molecules; four water molecules; two H2SeO2 clusters; and two H3SeO3 clusters. In each H2SeO2 cluster, 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 0.98 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one Se2- atom. The H–Se bond length is 1.53 Å. Se2- is bonded in a trigonal non-coplanar geometry to one H1+ and two O2- atoms. There is one shorter (1.66 Å) and one longer (1.85 Å) Se–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Se2- atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one H1+ and one Se2- atom. In each H3SeO3 cluster, there are six inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.05 Å) and one longer (1.48 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.02 Å) and one longer (1.62 Å) H–O bond length. In the third 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 fourth 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 fifth H1+ site, H1+ is bonded in a single-bond geometry to one Se2- atom. The H–Se bond length is 1.52 Å. 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. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 3-coordinate geometry to one H1+ and two O2- atoms. There is one shorter (1.69 Å) and one longer (1.80 Å) Se–O bond length. In the second Se2- site, Se2- is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Se–O bond distances ranging from 1.64–1.83 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to three H1+ atoms. In the second O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se2- atom. In the third O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the fourth O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se2- atom. In the fifth O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se2- atom. In the sixth O2- site, O2- is bonded in a bent 120 degrees geometry to one H1+ and one Se2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H14Se2N3O8 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H13Se2N3O8 by Materials Project

(NH4)5NH5Se2O8H(SeO4)2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of five ammonium molecules, one H(SeO4)2 cluster, and one NH5Se2O8 cluster. In the H(SeO4)2 cluster, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.09 Å) and one longer (1.41 Å) H–O bond length. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Se–O bond distances ranging from 1.67–1.70 Å. In the second Se2- site, Se2- is bonded in a tetrahedral geometry to four O2- atoms. There is three shorter (1.66 Å) and one longer (1.75 Å) Se–O bond length. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Se2- atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Se2- atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Se2- atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Se2- atom. In the sixth O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the seventh O2- site, O2- is bonded in a water-like geometry to one H1+ and one Se2- atom. In the eighth O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se2- atom. In the NH5Se2O8 cluster, N+2.33+ is bonded in a tetrahedral geometry to four H1+ atoms. There is one shorter (1.03 Å) and three longer (1.05 Å) N–H bond length. There are five inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ and one O2- atom. The H–O bond length is 1.73 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N+2.33+ atom. In the fifth 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 Se2- sites. In the first Se2- site, Se2- is bonded in a tetrahedral geometry to four O2- atoms. There is three shorter (1.66 Å) and one longer (1.75 Å) Se–O bond length. In the second Se2- site, Se2- is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Se–O bond distances ranging from 1.67–1.70 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Se2- atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Se2- atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Se2- atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one Se2- atom. In the fifth O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se2- atom. In the sixth O2- site, O2- is bonded in a water-like geometry to one H1+ and one Se2- atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Se2- atom. In the eighth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one H1+ and one Se2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H3Se2NO6 by Materials Project

N2(H3(SeO3)2)2 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional and consists of four ammonia molecules and one H3(SeO3)2 framework. In the H3(SeO3)2 framework, there are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.03 Å) and one longer (1.56 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.06 Å) and one longer (1.43 Å) H–O bond length. In the third H1+ site, H1+ is bonded in a single-bond geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.72 Å) H–O bond length. There are two inequivalent Se2+ sites. In the first Se2+ site, Se2+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Se–O bond distances ranging from 1.66–1.78 Å. In the second Se2+ site, Se2+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Se–O bond distances ranging from 1.68–1.77 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se2+ atom. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one H1+ and one Se2+ atom. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one H1+ and one Se2+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one H1+ and one Se2+ atom. In the fifth O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se2+ atom. In the sixth O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se2+ atom.

36 MATERIALS SCIENCE↗