Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “NaIO3”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

7 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on NaIO3 by Materials Project

NaIO3 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Na1+ is bonded to six O2- atoms to form corner-sharing NaO6 octahedra. The corner-sharing octahedra tilt angles range from 54–66°. There are a spread of Na–O bond distances ranging from 2.43–2.49 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to two equivalent Na1+ and one I5+ atom. The O–I bond length is 1.84 Å. In the second O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two equivalent Na1+ and one I5+ atom. The O–I bond length is 1.83 Å. I5+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NaIO3 by Materials Project

NaIO3 crystallizes in the monoclinic P2/m space group. The structure is three-dimensional. Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.26–3.00 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a square co-planar geometry to two equivalent Na1+ and two equivalent I5+ atoms. Both O–I bond lengths are 1.98 Å. In the second O2- site, O2- is bonded in a distorted linear geometry to two equivalent Na1+ atoms. In the third O2- site, O2- is bonded in a distorted linear geometry to two equivalent Na1+ atoms. I5+ is bonded in a linear geometry to two equivalent O2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NaIO3 by Materials Project

NaIO3 crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional. Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.42–2.94 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to two equivalent Na1+ and one I5+ atom. The O–I bond length is 1.84 Å. In the second O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Na1+ and one I5+ atom. The O–I bond length is 1.83 Å. In the third O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Na1+ and one I5+ atom. The O–I bond length is 1.83 Å. I5+ is bonded in a trigonal non-coplanar geometry to three O2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na16Al12Si12I3ClO48 by Materials Project

Na16Al12Si12O48I3Cl crystallizes in the orthorhombic P222 space group. The structure is three-dimensional. there are three inequivalent Na sites. In the first Na site, Na is bonded to three O and one I atom to form distorted NaIO3 tetrahedra that share corners with three NaIO3 tetrahedra, corners with three AlO4 tetrahedra, and corners with three SiO4 tetrahedra. All Na–O bond lengths are 2.37 Å. The Na–I bond length is 3.08 Å. In the second Na site, Na is bonded to three O and one I atom to form distorted NaIO3 tetrahedra that share corners with three NaIO3 tetrahedra, corners with three AlO4 tetrahedra, and corners with three SiO4 tetrahedra. All Na–O bond lengths are 2.37 Å. The Na–I bond length is 3.08 Å. In the third Na site, Na is bonded to three equivalent O and one Cl atom to form distorted NaClO3 tetrahedra that share corners with three equivalent NaClO3 tetrahedra, corners with three AlO4 tetrahedra, and corners with three SiO4 tetrahedra. All Na–O bond lengths are 2.40 Å. The Na–Cl bond length is 3.00 Å. There are three inequivalent Al sites. In the first Al site, Al is bonded to four O atoms to form AlO4 tetrahedra that share corners with four equivalent NaIO3 tetrahedra and corners with four SiO4 tetrahedra. There is two shorter (1.75 Å) and two longer (1.76 Å) Al–O bond length. In the second Al site, Al is bonded to four O atoms to form AlO4 tetrahedra that share corners with four NaIO3 tetrahedra and corners with four SiO4 tetrahedra. All Al–O bond lengths are 1.76 Å. In the third Al site, Al is bonded to four O atoms to form AlO4 tetrahedra that share corners with four NaIO3 tetrahedra and corners with four SiO4 tetrahedra. All Al–O bond lengths are 1.76 Å. There are three inequivalent Si sites. In the first Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with four NaIO3 tetrahedra and corners with four AlO4 tetrahedra. All Si–O bond lengths are 1.64 Å. In the second Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with four equivalent NaIO3 tetrahedra and corners with four AlO4 tetrahedra. All Si–O bond lengths are 1.64 Å. In the third Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with four NaClO3 tetrahedra and corners with four AlO4 tetrahedra. All Si–O bond lengths are 1.64 Å. There are five inequivalent O sites. In the first O site, O is bonded in a 3-coordinate geometry to one Na, one Al, and one Si atom. In the second O site, O is bonded in a 3-coordinate geometry to one Na, one Al, and one Si atom. In the third O site, O is bonded in a 3-coordinate geometry to one Na, one Al, and one Si atom. In the fourth O site, O is bonded in a 3-coordinate geometry to one Na, one Al, and one Si atom. In the fifth O site, O is bonded in a 3-coordinate geometry to one Na, one Al, and one Si atom. The O–Al bond length is 1.76 Å. The O–Si bond length is 1.64 Å. I is bonded in a tetrahedral geometry to four Na atoms. Cl is bonded in a tetrahedral geometry to four equivalent Na atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na4Al3Ge3IO12 by Materials Project

Na4Al3Ge3O12I crystallizes in the cubic P-43n space group. The structure is three-dimensional. Na1+ is bonded to three equivalent O2- and one I1- atom to form distorted NaIO3 tetrahedra that share corners with three equivalent NaIO3 tetrahedra, corners with three equivalent AlO4 tetrahedra, and corners with three equivalent GeO4 tetrahedra. All Na–O bond lengths are 2.35 Å. The Na–I bond length is 3.10 Å. Al3+ is bonded to four equivalent O2- atoms to form AlO4 tetrahedra that share corners with four equivalent NaIO3 tetrahedra and corners with four equivalent GeO4 tetrahedra. All Al–O bond lengths are 1.77 Å. Ge4+ is bonded to four equivalent O2- atoms to form GeO4 tetrahedra that share corners with four equivalent NaIO3 tetrahedra and corners with four equivalent AlO4 tetrahedra. All Ge–O bond lengths are 1.76 Å. O2- is bonded in a distorted trigonal planar geometry to one Na1+, one Al3+, and one Ge4+ atom. I1- is bonded in a tetrahedral geometry to four equivalent Na1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NaAgI2O3 by Materials Project

NaIO3AgI crystallizes in the orthorhombic Pbca space group. The structure is two-dimensional and consists of two AgI sheets oriented in the (0, 0, 1) direction and two NaIO3 sheets oriented in the (0, 0, 1) direction. In each AgI sheet, Ag1+ is bonded in a 4-coordinate geometry to three equivalent I2+ atoms. There are a spread of Ag–I bond distances ranging from 2.75–2.81 Å. I2+ is bonded in a distorted trigonal planar geometry to three equivalent Ag1+ atoms. In each NaIO3 sheet, Na1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Na–O bond distances ranging from 2.30–2.76 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 5-coordinate geometry to two equivalent Na1+, one O2-, and two equivalent I2+ atoms. The O–O bond length is 1.37 Å. There are one shorter (2.52 Å) and one longer (2.74 Å) O–I bond lengths. In the second O2- site, O2- is bonded in an L-shaped geometry to one Na1+ and one I2+ atom. The O–I bond length is 1.88 Å. In the third O2- site, O2- is bonded in a distorted T-shaped geometry to two equivalent Na1+ and one O2- atom. I2+ is bonded in a 3-coordinate geometry to three O2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2022

Oxidation of p-[125I]Iodobenzoic Acid and p-[211At]Astatobenzoic Acid Derivatives and Evaluation In Vivo

The alpha particle-emitting radionuclide astatine-211 (211At) is of interest for targeted radiotherapy; however, low in vivo stability of many 211At-labeled cancer-targeting molecules has limited its potential. As an alternative labeling method, we evaluated whether a specific type of astatinated aryl compound that has the At atom in a higher oxidation state might be stable to in vivo deastatination. In the research effort, para-iodobenzoic acid methyl ester and dPEG4-amino acid methyl ester derivatives were prepared as HPLC standards. The corresponding para-stannylbenzoic acid derivatives were also prepared and labeled with 125I and 211At. Oxidization of the [125I]iodo- and [211At]astato-benzamidyl-dPEG4-acid methyl ester derivatives provided materials for in vivo evaluation. A biodistribution was conducted in mice with coinjected oxidized 125I- and 211At-labeled compounds. The oxidized radioiodinated derivative was stable to in vivo deiodination, but unfortunately the oxidized [211At]astatinated benzamide derivative was found to be unstable under the conditions of isolation by radio-HPLC (post animal injection). Another biodistribution study in mice evaluated the tissue concentrations of coinjected [211At]NaAtO3 and [125I]NaIO3. Comparison of the tissue concentrations of the isolated material from the oxidized [211At]benzamide derivative with those of [211At]astatate indicated the species obtained after isolation was likely [211At]astatate.

59 BASIC BIOLOGICAL SCIENCES↗