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11 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on CdH9C2(N2O5)2 by Materials Project

CdC2H9(N2O5)2 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is one-dimensional and consists of two CdC2H9(N2O5)2 ribbons oriented in the (0, 1, 0) direction. Cd2+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Cd–O bond distances ranging from 2.28–2.46 Å. There are two inequivalent C+3.50+ sites. In the first C+3.50+ site, C+3.50+ is bonded in a distorted trigonal planar geometry to one N+0.50+, one H1+, and one O2- atom. The C–N bond length is 1.32 Å. The C–H bond length is 1.10 Å. The C–O bond length is 1.27 Å. In the second C+3.50+ site, C+3.50+ is bonded in a distorted bent 120 degrees geometry to one N+0.50+ and one O2- atom. The C–N bond length is 1.31 Å. The C–O bond length is 1.24 Å. There are four inequivalent N+0.50+ sites. In the first N+0.50+ site, N+0.50+ is bonded in a distorted bent 120 degrees geometry to one C+3.50+ and two H1+ atoms. Both N–H bond lengths are 1.02 Å. In the second N+0.50+ site, N+0.50+ is bonded in a distorted bent 120 degrees geometry to one C+3.50+ and two H1+ atoms. Both N–H bond lengths are 1.03 Å. In the third N+0.50+ site, N+0.50+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.25 Å) and one longer (1.30 Å) N–O bond length. In the fourth N+0.50+ site, N+0.50+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.25–1.31 Å. There are nine inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N+0.50+ atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N+0.50+ atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N+0.50+ atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N+0.50+ atom. In the fifth 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 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 single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.76 Å) H–O bond length. In the eighth 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 ninth H1+ site, H1+ is bonded in a single-bond geometry to one C+3.50+ atom. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to one Cd2+ and one C+3.50+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Cd2+ and one C+3.50+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Cd2+, one N+0.50+, and one H1+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one N+0.50+ atom. In the fifth O2- site, O2- is bonded in a single-bond geometry to one N+0.50+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Cd2+ and one N+0.50+ atom. In the seventh O2- site, O2- is bonded in a single-bond geometry to one N+0.50+ atom. In the eighth O2- site, O2- is bonded in a single-bond geometry to one N+0.50+ atom. In the ninth O2- site, O2- is bonded in a distorted water-like geometry to one Cd2+ and two H1+ atoms. In the tenth O2- site, O2- is bonded in a distorted water-like geometry to one Cd2+ and two H1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CdRe2H8C2(N2O5)2 by Materials Project

Re2CdC2H8(N2O5)2 crystallizes in the monoclinic P2_1/c space group. The structure is one-dimensional and consists of two Re2CdC2H8(N2O5)2 ribbons oriented in the (1, 0, 0) direction. there are two inequivalent Re7+ sites. In the first Re7+ site, Re7+ is bonded to four O2- atoms to form ReO4 tetrahedra that share corners with two equivalent CdO6 octahedra. The corner-sharing octahedra tilt angles range from 37–42°. There are a spread of Re–O bond distances ranging from 1.74–1.77 Å. In the second Re7+ site, Re7+ is bonded to four O2- atoms to form ReO4 tetrahedra that share corners with two equivalent CdO6 octahedra. The corner-sharing octahedra tilt angles range from 30–44°. There are a spread of Re–O bond distances ranging from 1.74–1.77 Å. Cd2+ is bonded to six O2- atoms to form CdO6 octahedra that share corners with four ReO4 tetrahedra. There are a spread of Cd–O bond distances ranging from 2.24–2.40 Å. There are two inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a trigonal planar geometry to two N3- and one O2- atom. Both C–N bond lengths are 1.34 Å. The C–O bond length is 1.29 Å. In the second C4+ site, C4+ is bonded in a trigonal planar geometry to two N3- and one O2- atom. Both C–N bond lengths are 1.35 Å. The C–O bond length is 1.28 Å. There are four inequivalent N3- sites. In the first N3- site, N3- is bonded in a trigonal planar geometry to one C4+ and two H1+ atoms. Both N–H bond lengths are 1.02 Å. In the second N3- site, N3- is bonded in a trigonal planar geometry to one C4+ and two H1+ atoms. Both N–H bond lengths are 1.02 Å. In the third N3- site, N3- is bonded in a trigonal planar geometry to one C4+ and two H1+ atoms. Both N–H bond lengths are 1.01 Å. In the fourth N3- site, N3- is bonded in a trigonal planar geometry to one C4+ and two H1+ atoms. There is one shorter (1.01 Å) and one longer (1.02 Å) N–H bond length. There are eight inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Re7+ and one Cd2+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Re7+ and one Cd2+ atom. In the third O2- site, O2- is bonded in a single-bond geometry to one Re7+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one Re7+ atom. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to one Re7+ and one Cd2+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Re7+ and one Cd2+ atom. In the seventh O2- site, O2- is bonded in a single-bond geometry to one Re7+ atom. In the eighth O2- site, O2- is bonded in a single-bond geometry to one Re7+ atom. In the ninth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cd2+ and one C4+ atom. In the tenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cd2+ and one C4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CdRe2C2(N2O5)2 by Materials Project

Re2CdC2(N2O5)2 crystallizes in the monoclinic P2_1/c space group. The structure is one-dimensional and consists of two Re2CdC2(N2O5)2 ribbons oriented in the (1, 0, 0) direction. there are two inequivalent Re7+ sites. In the first Re7+ site, Re7+ is bonded to four O2- atoms to form ReO4 tetrahedra that share corners with two equivalent CdO6 octahedra. The corner-sharing octahedra tilt angles range from 33–49°. There are a spread of Re–O bond distances ranging from 1.73–1.78 Å. In the second Re7+ site, Re7+ is bonded to four O2- atoms to form ReO4 tetrahedra that share corners with two equivalent CdO6 octahedra. The corner-sharing octahedra tilt angles range from 26–40°. There are a spread of Re–O bond distances ranging from 1.73–1.78 Å. Cd2+ is bonded to six O2- atoms to form CdO6 octahedra that share corners with four ReO4 tetrahedra. There are a spread of Cd–O bond distances ranging from 2.23–2.46 Å. There are two inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a 1-coordinate geometry to two N1- and one O2- atom. Both C–N bond lengths are 1.38 Å. The C–O bond length is 1.21 Å. In the second C4+ site, C4+ is bonded in a 1-coordinate geometry to two N1- and one O2- atom. Both C–N bond lengths are 1.38 Å. The C–O bond length is 1.21 Å. There are four inequivalent N1- sites. In the first N1- site, N1- is bonded in a distorted single-bond geometry to one C4+ atom. In the second N1- site, N1- is bonded in a 1-coordinate geometry to one C4+ and one N1- atom. The N–N bond length is 1.33 Å. In the third N1- site, N1- is bonded in a 1-coordinate geometry to one C4+ atom. In the fourth N1- site, N1- is bonded in a 1-coordinate geometry to one C4+ and one N1- atom. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Re7+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Re7+ and one Cd2+ atom. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Re7+ and one Cd2+ atom. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to one Re7+ and one Cd2+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cd2+ and one C4+ atom. In the sixth O2- site, O2- is bonded in a single-bond geometry to one Re7+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cd2+ and one C4+ atom. In the eighth O2- site, O2- is bonded in a bent 150 degrees geometry to one Re7+ and one Cd2+ atom. In the ninth O2- site, O2- is bonded in a single-bond geometry to one Re7+ atom. In the tenth O2- site, O2- is bonded in a single-bond geometry to one Re7+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on N2O5 by Materials Project

N2O5 crystallizes in the hexagonal P6_3/mmc space group. The structure is zero-dimensional and consists of two hydroxylamine, n-hydroxy- molecules and two nitric acid molecules.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on MgCdH4(N2O5)2 by Materials Project

MgCdH4(N2O5)2 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Mg2+ is bonded in an octahedral geometry to six O2- atoms. There are two shorter (2.04 Å) and four longer (2.17 Å) Mg–O bond lengths. Cd2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Cd–O bond distances ranging from 2.42–2.59 Å. There are two inequivalent N3+ sites. In the first N3+ site, N3+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.26 Å) and one longer (1.28 Å) N–O bond length. In the second N3+ site, N3+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.26 Å) and one longer (1.28 Å) N–O bond length. 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 O2- atom. The H–O bond length is 0.99 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to one Cd2+ and one N3+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one Mg2+, one Cd2+, and one N3+ atom. In the third O2- site, O2- is bonded in a distorted water-like geometry to one Cd2+ and one N3+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Mg2+, one Cd2+, and one N3+ atom. In the fifth O2- site, O2- is bonded in a distorted water-like geometry to one Mg2+ and two H1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CuH10C2(N2O5)2 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 H20C3(N2O5)2 by Materials Project

(NH4)4H2(CO3)3H2O crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of four ammonium molecules, one schembl1250901 molecule, and one water molecule.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Li2Pd(N2O5)2 by Materials Project

Li2N3O8PdNO2 crystallizes in the orthorhombic Pna2_1 space group. The structure is one-dimensional and consists of four nitrous acid molecules; four palladium on carbon molecules; and two Li2N3O8 ribbons oriented in the (1, 0, 0) direction. In each Li2N3O8 ribbon, there are two inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Li–O bond distances ranging from 1.95–2.36 Å. In the second Li1+ site, Li1+ is bonded in a distorted square pyramidal geometry to five O2- atoms. There are a spread of Li–O bond distances ranging from 1.97–2.25 Å. There are three inequivalent N4+ sites. In the first N4+ site, N4+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.24 Å) and one longer (1.25 Å) N–O bond length. In the second N4+ site, N4+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.23 Å) and one longer (1.25 Å) N–O bond length. In the third N4+ site, N4+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.23 Å) and one longer (1.25 Å) N–O bond length. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Li1+ atoms. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one Li1+ and one N4+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one Li1+ and one N4+ atom. In the fourth O2- site, O2- is bonded in a water-like geometry to two Li1+ atoms. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to two Li1+ and one N4+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to two Li1+ and one N4+ atom. In the seventh O2- site, O2- is bonded in a single-bond geometry to one N4+ atom. In the eighth O2- site, O2- is bonded in a single-bond geometry to one N4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CoP3H16N4O11 by Materials Project

CoP3H14(N2O5)2H2O crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of four water molecules and two CoP3H14(N2O5)2 sheets oriented in the (0, 1, 0) direction. In each CoP3H14(N2O5)2 sheet, Co3+ is bonded to four N3- and two O2- atoms to form CoN4O2 octahedra that share corners with two PO4 tetrahedra. There are a spread of Co–N bond distances ranging from 1.97–2.09 Å. There are one shorter (1.99 Å) and one longer (2.02 Å) Co–O bond lengths. There are three inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one CoN4O2 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedral tilt angles are 31°. There are a spread of P–O bond distances ranging from 1.52–1.62 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There is two shorter (1.50 Å) and two longer (1.64 Å) P–O bond length. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one CoN4O2 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. There are a spread of P–O bond distances ranging from 1.51–1.63 Å. There are four inequivalent N3- sites. In the first N3- site, N3- is bonded in a distorted trigonal non-coplanar geometry to one Co3+ and three H1+ atoms. There is two shorter (1.02 Å) and one longer (1.03 Å) N–H bond length. In the second N3- site, N3- is bonded in a distorted trigonal non-coplanar geometry to one Co3+ and three H1+ atoms. There are a spread of N–H bond distances ranging from 1.02–1.04 Å. In the third N3- site, N3- is bonded in a distorted trigonal non-coplanar geometry to one Co3+ and three H1+ atoms. There is one shorter (1.02 Å) and two longer (1.03 Å) N–H bond length. In the fourth N3- site, N3- is bonded in a distorted trigonal non-coplanar geometry to one Co3+ and three H1+ atoms. There are a spread of N–H bond distances ranging from 1.02–1.04 Å. There are fourteen inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the tenth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the eleventh H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the twelfth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the thirteenth H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.02 Å) and one longer (1.63 Å) H–O bond length. In the fourteenth H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.04 Å) and one longer (1.51 Å) H–O bond length. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one P5+ and one H1+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one Co3+ and one P5+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to one Co3+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one P5+ and one H1+ atom. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to one P5+ and one H1+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two P5+ atoms. In the seventh O2- site, O2- is bonded in a single-bond geometry to one P5+ atom. In the eighth O2- site, O2- is bonded in a single-bond geometry to one P5+ atom. In the ninth O2- site, O2- is bonded in a bent 120 degrees geometry to two P5+ atoms. In the tenth O2- site, O2- is bonded in a bent 120 degrees geometry to one P5+ and one H1+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2023

Quantifying the Contributions of Aerosol- and Snow-Produced ClNO 2 through Observations and 1D Modeling

Nitryl chloride (ClNO 2 ) is a radical reservoir that forms and accumulates in the nocturnal atmospheric boundary layer influenced by combustion emissions and chloride (e.g., sea salt and road salt). Upon sunrise, ClNO 2 rapidly photolyzes to generate highly reactive chlorine radicals (Cl • ) that affect the air quality by generating secondary air pollutants. Recent studies have shown road salt aerosols and saline snowpack to be sources of ClNO 2 in the wintertime urban environment; however, the quantitative contributions of each chloride source are not known. In this study, we examine the vertically resolved contributions of aerosol particles and saline snowpack as sources of ClNO 2 by using an observationally constrained snow–atmosphere coupled one-dimensional model applied to wintertime Kalamazoo, Michigan, U.S. Model simulations show that ClNO 2 emitted from urban snowpack can be vertically transported throughout the entire atmospheric boundary layer and can be a significant source of ClNO 2 , contributing up to ~60% of the ClNO 2 budget near the surface. Here, modeled snowpack ClNO 2 emission rates were 6 (±7) times higher than the observationally derived emission rates, suggesting that not all snow chloride is available for reaction. ClNO 2 production from both aerosol particles and snow emissions are required to best simulate the observed surface-level ClNO 2 . Using the traditional bulk parameterization for ClNO 2 produced from particles significantly overestimated ClNO 2 due to the assumption of having equivalent dinitrogen pentoxide (N 2 O 5 ) uptake and chloride availability for the entire particle population. In comparison, the chemically resolved surface area-based parameterization slightly underestimated the observations and had uncertainties deriving from ClNO 2 production from residential wood burning particles.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
DOE OSTI2023

Regime-Dependence of Nocturnal Nitrate Formation via N 2 O 5 Hydrolysis and Its Implication for Mitigating Nitrate Pollution

The heterogeneous hydrolysis of dinitrogen pentoxide (N 2 O 5 ) is an important pathway in nitrate formation; however, its formation rate and relative contribution to total particulate nitrate (pNO 3 - ) are highly variable. Here we report that nocturnal pNO 3 - formation via N 2 O 5 hydrolysis is dependent on the regime defined by the ratio of NO 2 to O 3 . Nocturnal pNO 3 - formation via N 2 O 5 hydrolysis is suppressed in an O 3 -limited regime but enhanced in a NO 2 -limited regime. The results have crucial implications for effective control of nitrate pollution in the future. An exclusive decrease in NO 2 will decrease nocturnal pNO 3 - formation in a NO 2 -limited regime but may be less effective or even increase nocturnal pNO 3 - formation in an O 3 -limited regime.

54 ENVIRONMENTAL SCIENCES↗