Results 11 to 20 of about 9,697 (144)
Allylammonium hydrogen oxalate hemihydrate [PDF]
Acta Crystallographica Section E Structure Reports Online, 2014 In the title hydrated molecular salt, C3H8N+·C2HO4−·0.5H2O, the water O atom lies on a crystallographic twofold axis. The C=C—C—N torsion angle in the cation is 2.8 (3)° and the dihedral angle between the CO2and CO2H planes in the anion is 1.0 (4)°. In the crystal, the hydrogen oxalate ions are linked by O—H...O hydrogen bonds, generating [010] chains.
Błażej Dziuk +2 more
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2-[(2-Hydroxyethyl)azaniumyl]ethanaminium oxalate monohydrate
Acta Crystallographica Section E, 2012 In the title hydrated molecular salt, C4H14N2O2+·C2O42−·H2O, the oxalate dianion is almost planar (r.m.s. deviation = 0.020 Å).
Yu Jin
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Heritage Science, 2019 The consolidation of powdering porous limestone with ammonium oxalate treatment is hereby being examined through its performance in the field. The literature to date reports this treatment’s potential use for consolidation and protection (from acid ...
Tabitha Dreyfuss
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Bis(tetramethylammonium) oxalate monohydrate [PDF]
Acta Crystallographica Section E Structure Reports Online, 2009 In the crystal structure of the title hydrated salt, 2C4H12N+·C2O42−·H2O, the two independent cations, the anion and the water molecule all lie on special positions of m site symmetry. In both cations, the mirror plane passes through the nitrogen atom and two methyl groups; in the anion, the mirror plane passes through two carbon and two oxygen atoms.
Yun-Xia Yang, Qi Li, Seik Weng Ng
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A new binuclear Ni(II) complex, an effective A3-coupling catalyst in solvent-free condition
Heliyon, 2023 A newly binuclear nickel(II) complex, [Ni2(en)4(ox)](ClO4)2 (1) (where en = ethylenediamine, and ox = oxalate), has been isolated from a reaction of NiCl2·6H2O, ethylenediamine, ammonium oxalate and sodium perchlorate in water and its crystal structure ...
Ayda Sheykhi +3 more
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Ambient air particles: The use of ion chromatography and multivariate techniques in the analysis of water-soluble substances [PDF]
Journal of the Serbian Chemical Society, 2021 Seventeen water-soluble substances (of sodium, ammonium, potassium, magnesium, calcium, formate, methanesulfonate, glyoxylate, chloride, nitrite, nitrate, glutarate, succinate, malate, malonate, sulfate and oxalate) in 94 samples of particle matter in ...
Todorović Žaklina N. +4 more
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Redetermination of ammonium oxalate oxalic acid dihydrate
Acta Crystallographica Section E Structure Reports Online, 2006 The crystal structure of the triclinic form of the title compound, NH4+·C2HO4−·C2H2O4·2H2O, has been redetermined, providing a significant increase in the precision of the derived geometric parameters. The asymmetric unit comprises an ammonium cation, an oxalate anion, half each of two oxalic acid molecules, each disposed about a centre of inversion ...
PORTALONE, Gustavo, COLAPIETRO M.
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Bis(tetraethylammonium) oxalate dihydrate [PDF]
Acta Crystallographica Section E Structure Reports Online, 2012 The title compound, 2C8H20N+·C2O42−·2H2O, synthesized by neutralizing H2C2O4·2H2O with (C2H5)4NOH in a 1:2 molar ratio, is a deliquescent solid. The oxalate ion is nonplanar, with a dihedral angle between carboxylate groups of 64.37 (2)°. O—H...O hydrogen bonds of moderate strength link the O atoms of the water molecules and the oxalate ions into rings
Timothy J. McNeese, Robert D. Pike
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Fourier transform infrared spectroscopy for analysis of kidney stones [PDF]
Investigative and Clinical Urology, 2018 Purpose: To compare the results of a chemical method of kidney stone analysis with the results of Fourier transform infrared (FT-IR) spectroscopy. Materials and Methods: Kidney stones collected between June and October 2015 were simultaneously analyzed ...
Aysha Habib Khan +3 more
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A Study of Phosphate Solubilizing Capacity by Penicillium Aurantiogriseum under Different Carbon and Nitrogen Resources [PDF]
E3S Web of Conferences, 2022 Phosphate-solubilizing fungi have been successfully applied to the release of phosphorus from insoluble tricalcium phosphate. A phosphate-solubilizing fungi Penicillium aurantiogriseum was isolated and investigated the phosphorus solubilizing capacity ...
Hu Jun +4 more
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