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At least 91 records · Page 5
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DOE OSTI2020

Materials Data on MgH24C6N12(ClO6)2 by Materials Project

MgC6H24(N2O)6(ClO3)2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four ClO3 clusters and two MgC6H24(N2O)6 clusters. In each ClO3 cluster, there are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.50 Å. In the second O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.51 Å. In the third O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.51 Å. Cl1- is bonded in a trigonal non-coplanar geometry to three O2- atoms. In each MgC6H24(N2O)6 cluster, Mg2+ is bonded in an octahedral geometry to six O2- atoms. There are four shorter (2.10 Å) and two longer (2.13 Å) Mg–O bond lengths. There are three inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a trigonal planar geometry to two N2- and one O2- atom. There is one shorter (1.34 Å) and one longer (1.35 Å) C–N bond length. The C–O bond length is 1.28 Å. In the second C4+ site, C4+ is bonded in a trigonal planar geometry to two N2- and one O2- atom. There is one shorter (1.35 Å) and one longer (1.36 Å) C–N bond length. The C–O bond length is 1.27 Å. In the third C4+ site, C4+ is bonded in a trigonal planar geometry to two N2- and one O2- atom. Both C–N bond lengths are 1.35 Å. The C–O bond length is 1.27 Å. There are six inequivalent N2- sites. In the first N2- site, N2- 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. In the second N2- site, N2- 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 N2- site, N2- 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 fourth N2- site, N2- 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 fifth N2- site, N2- 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 sixth N2- site, N2- 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 twelve inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the tenth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the eleventh H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the twelfth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Mg2+ and one C4+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Mg2+ and one C4+ atom. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Mg2+ and one C4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ni(ClO6)2 by Materials Project

NiO6(ClO3)2 crystallizes in the cubic Pa-3 space group. The structure is zero-dimensional and consists of eight ClO3 clusters and four NiO6 clusters. In each ClO3 cluster, O is bonded in a single-bond geometry to one Cl atom. The O–Cl bond length is 1.51 Å. Cl is bonded in a trigonal non-coplanar geometry to three equivalent O atoms. In each NiO6 cluster, Ni is bonded in an octahedral geometry to six equivalent O atoms. All Ni–O bond lengths are 1.92 Å. O is bonded in a single-bond geometry to one Ni atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NiH12(ClO6)2 by Materials Project

Ni(H2O)6(ClO3)2 crystallizes in the cubic Pa-3 space group. The structure is zero-dimensional and consists of four nsvfpfuroxfzjs-uhfffaoysa-n molecules and eight ClO3 clusters. In each ClO3 cluster, O is bonded in a single-bond geometry to one Cl atom. The O–Cl bond length is 1.51 Å. Cl is bonded in a trigonal non-coplanar geometry to three equivalent O atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TeC4S4N8(ClO4)2 by Materials Project

C2Te(N2S)2(CN2SO)2(ClO3)2 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two C2Te(N2S)2 clusters, four CN2SO clusters, and four ClO3 clusters. In each C2Te(N2S)2 cluster, there are two inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a linear geometry to two N+0.75+ atoms. There is one shorter (1.18 Å) and one longer (1.31 Å) C–N bond length. In the second C4+ site, C4+ is bonded in a linear geometry to two N+0.75+ atoms. There is one shorter (1.18 Å) and one longer (1.29 Å) C–N bond length. There are four inequivalent N+0.75+ sites. In the first N+0.75+ site, N+0.75+ is bonded in a single-bond geometry to one C4+ atom. In the second N+0.75+ site, N+0.75+ is bonded in a distorted bent 120 degrees geometry to one C4+ and one S2- atom. The N–S bond length is 1.58 Å. In the third N+0.75+ site, N+0.75+ is bonded in a single-bond geometry to one C4+ atom. In the fourth N+0.75+ site, N+0.75+ is bonded in a distorted bent 120 degrees geometry to one C4+ and one S2- atom. The N–S bond length is 1.57 Å. Te4+ is bonded in a distorted bent 150 degrees geometry to two S2- atoms. There are one shorter (2.44 Å) and one longer (2.55 Å) Te–S bond lengths. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a distorted water-like geometry to one N+0.75+ and one Te4+ atom. In the second S2- site, S2- is bonded in a distorted bent 120 degrees geometry to one N+0.75+ and one Te4+ atom. In each CN2SO cluster, C4+ is bonded in a linear geometry to two N+0.75+ atoms. There is one shorter (1.18 Å) and one longer (1.31 Å) C–N bond length. There are two inequivalent N+0.75+ sites. In the first N+0.75+ site, N+0.75+ is bonded in a single-bond geometry to one C4+ atom. In the second N+0.75+ site, N+0.75+ is bonded in a distorted bent 120 degrees geometry to one C4+ and one S2- atom. The N–S bond length is 1.56 Å. S2- is bonded in a distorted bent 120 degrees geometry to one N+0.75+ and one O2- atom. The S–O bond length is 1.45 Å. O2- is bonded in a single-bond geometry to one S2- atom. In each ClO3 cluster, there are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.47 Å. In the second O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.49 Å. In the third O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.48 Å. Cl1- is bonded in a trigonal non-coplanar geometry to three O2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on MgH12(ClO6)2 by Materials Project

Mg(H2O)6(ClO3)2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of two magnesium;hexahydrate molecules and four ClO3 clusters. In each ClO3 cluster, there are three inequivalent O sites. In the first O site, O is bonded in a distorted single-bond geometry to one Cl atom. The O–Cl bond length is 1.51 Å. In the second O site, O is bonded in a distorted single-bond geometry to one Cl atom. The O–Cl bond length is 1.51 Å. In the third O site, O is bonded in a single-bond geometry to one Cl atom. The O–Cl bond length is 1.51 Å. Cl is bonded in a trigonal non-coplanar geometry to three O atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TlClO3 by Materials Project

TlClO3 is Ammonia-derived structured and crystallizes in the trigonal R3m space group. The structure is zero-dimensional and consists of three ramor molecules and three ClO3 clusters. In each ClO3 cluster, O is bonded in a single-bond geometry to one Cl atom. The O–Cl bond length is 1.51 Å. Cl is bonded in a trigonal non-coplanar geometry to three equivalent O atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta6Br12ClO15 by Materials Project

(TaO)6(O2)3ClO3(Br)12 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of twenty-four hydrobromic acid molecules, six hydrogen peroxide molecules, twelve oxotantalum molecules, and two ClO3 clusters. In each ClO3 cluster, there are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a water-like geometry to one O2- and one Cl1- atom. The O–O bond length is 1.31 Å. The O–Cl bond length is 2.47 Å. In the second O2- site, O2- is bonded in a single-bond geometry to one O2- atom. The O–O bond length is 1.33 Å. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to two O2- atoms. Cl1- is bonded in a distorted single-bond geometry to one O2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CoH18N6(ClO)3 by Materials Project

Co(NH3)6ClO3Cl2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four azane;cobalt molecules, eight hydrochloric acid molecules, and four ClO3 clusters. In each ClO3 cluster, there are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.50 Å. In the second O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.50 Å. In the third O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.51 Å. Cl1- is bonded in a trigonal non-coplanar geometry to three O2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HgClO4 by Materials Project

HgOClO3 crystallizes in the orthorhombic Pbcm space group. The structure is one-dimensional and consists of four ClO3 clusters and two HgO ribbons oriented in the (0, 1, 0) direction. In each ClO3 cluster, there are two inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one Cl atom. The O–Cl bond length is 1.50 Å. In the second O site, O is bonded in a single-bond geometry to one Cl atom. The O–Cl bond length is 1.48 Å. Cl is bonded in a trigonal non-coplanar geometry to three O atoms. In each HgO ribbon, Hg is bonded in a linear geometry to two equivalent O atoms. Both Hg–O bond lengths are 2.02 Å. O is bonded in a bent 120 degrees geometry to two equivalent Hg atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CoH18Br2N6ClO3 by Materials Project

Co(NH3)6ClO3(Br)2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four azane;cobalt molecules, eight hydrobromic acid molecules, and four ClO3 clusters. In each ClO3 cluster, there are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.52 Å. In the second O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.50 Å. In the third O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.50 Å. Cl1- is bonded in a trigonal non-coplanar geometry to three O2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NClO3 by Materials Project

ClONO2 is Ammonia-derived structured and crystallizes in the trigonal R3m space group. The structure is zero-dimensional and consists of three ammonia molecules and three ClO3 clusters. In each ClO3 cluster, O is bonded in a single-bond geometry to one Cl atom. The O–Cl bond length is 1.47 Å. Cl is bonded in a trigonal non-coplanar geometry to three equivalent O atoms.

36 MATERIALS SCIENCE↗
NASA NTRS1990

Formation and decay of (3P(J))O atoms in the laser flash photolysis of chlorine dioxide (OClO) at 308 nm

The quantum yields of O(3P(J)) and Cl(2P(3/2)) atoms released in the laser flash photolysis of OClO at 308 and 298 K were determined and the kinetics of the subsequent oxygen atom decay was investigated using time-resolved atomic resonance fluorescence measurements. The results are consistent with the formation of sym-ClO3 having a Delta Hf(ClO3) (formed in the reaction O + OClO + Ar) of 55.6 +/-4 kcal/mol.

Colussi, A. J.↗
NASA NTRS2014

The Investigation of Chlorates as a Possible Source of Oxygen and Chlorine Detected by the Sample Analysis at Mars (SAM) Instrument in Gale Crater, Mars

The Sample Analysis at Mars (SAM) instrument onboard the Curiosity rover detect-ed O2 and HCl gas releases from the Rocknest (RN) eolian bedform and the John Klein (JK) and Cumberland (CB) drill hole materials in Gale Crater. Chlorinated hydrocarbons have also been detected by the SAM quadrupole mass spectrometer (QMS) and gas chromatography/mass spectrometer (GCMS). These detections along with the detection of perchlorate (ClO4-) by the Mars Phoenix Lander’s Wet Chemistry Laboratory (WCL) suggesting perchlorate is a possible candidate for evolved O2 and chlorine species. Laboratory thermal analysis of perchlorates has yet to provide an unequivocal temperature match to the SAM O2 and HCl release data. Iron mineralogy found in the Rocknest materials when mixed with Ca-perchlorate does cause O2 release temperatures to be closer match to the SAM O2 release data but more work is required in evaluating the catalytic effects of Fe mineralogy on perchlorate decomposition. Chlorates (ClO3-) are relevant Mars materials and potential O2 and Cl sources. The objective of this work is to evaluate the thermal decomposition of select chlorate (ClO3-) salts as possible sources of the O2 and HCl releases in the Gale Crater materials.

Sutter, B.↗
NASA NTRS1976

A reexamination of the photochemistry of the Cl2-O3 system

An analysis is conducted of experimental data reported by Norrish and Neville (1934) who studied quantum yields for ozone destruction. A reaction scheme is presented for the Cl2-O3 system. It is demonstrated that the reaction scheme provides a quantitative explanation concerning the main features of the experimental data. Attention is given to reactions involving ClO, OClO, ClOO, and ClO3.

Rundel, R. D.↗
NASA NTRS1978

The role of computational chemistry in the science and measurements of the atmosphere

The role of computational chemistry in determining the stability, photochemistry, spectroscopic parameters, and parameters for estimating reaction rates of atmospheric constituents is discussed. Examples dealing with the photolysis cross sections of HOCl and (1 Delta g) O2 and with the stability of gaseous NH4Cl and asymmetric ClO3 are presented. It is concluded that computational chemistry can play an important role in the study of atmospheric constituents, particularly reactive and short-lived species which are difficult to investigate experimentally.

Phillips, D. H.↗
NASA NTRS1981

Matrix spectroscopic studies of chlorine atom-ozone reaction products

A spectroscopic study is presented of the matrix-isolated products of the direct combination reaction of chlorine atoms with ozone and of the microwave discharge reaction of chlorine and oxygen. Infrared spectra in the wavenumber range 2000 to 200 per cm were recorded for reaction products trapped by the condensation of a matrix of solid argon. Evidence for the formation of the ClO radical as well as the ClOO and ClClO radicals during the direct chlorine-ozone reaction is obtained, however no evidence is found for the presence of asymmetric ClO3 under conditions thought favorable for its formation. The ClO molecule is also observed following the microwave discharge reaction of chlorine and oxygen in argon in the isotopic forms (Cl-35)(O-16), (Cl-37)(O-16), (Cl-35)(O-18), and (Cl-37)(O-18). It is noted that the vibrational frequency for the (Cl-35)(O-16) radical at 849.2 per cm is blue-shifted 5 per cm above its gas-phase fundamental.

Carter, R. O., III↗
NASA NTRS1989

Efficiency of N use by wheat as a function of influx and efflux of NO sub 3

Since N assimilation is one of the most costly functions of a plant, its efflux before assimilation results in a serious energy cost and loss in efficiency which could decrease yields. Efficient crop production is critical to the Controlled Ecological Life-Support System (CELSS). The objective is to determine the extent of efflux of the N species NO3(-), NH4(+), NO2(-), and urea after uptake, and possible means of regulation. It was found that NO3(-) efflux became serious as its substrate level increased. Efflux/Influx (E/I) of 3NO3(-) was greater in darkness (35 pct) than in light (14 pct) and the ratio greatly increased with increased substrate NO3(-), (up to 45 pct at 10 mM). It seems advantageous to use the lowest possible nutrient concentration of NO3(-). The feasibility of using ClO3(-) as a trapping agent (competitive inhibitor of NO3(-) uptake) for effluxed NO3(-) was assessed and its toxicity determined.

Huffaker, R. C.↗
NASA NTRS1990

Efficiency of N use by wheat as a function of influx and efflux of NO3

Since N assimilation is one of the most costly functions of a plant, its efflux before assimilation results in a serious energy cost and loss in efficiency which could decrease yields. Efficient crop production is critical to the Closed Ecology Life Support System (CELSS). The objective is to determine the extent of efflux of the N species NO3(-), NH4(+), NO2(-), and urea after uptake, and possible means of regulation. Researchers found that NO3 efflux became serious as its substrate level increased. Efflux/Influx (E/I) of NO3(-) was greater in darkness (35 percent) than in light (14 percent), and the ratio greatly increased with substrate NO3 (-), (up to 45 percent at 10 mM). It seems advantageous to use the lowest possible nutrient concentration of NO3(-). The feasibility of using ClO3(-) was assessed and its toxicity determined.

Huffaker, R. C.↗