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Thematische Bibliographien / Anion oxalate / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „Anion oxalate“

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Veröffentlicht am 4. Juni 2025

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1

Hind, A. R., S. K. Bhargava, W. Van Bronswijk, S. C. Grocott, and S. L. Eyer. "On the Aqueous Vibrational Spectra of Alkali Metal Oxalates." Applied Spectroscopy 52, no. 5 (1998): 683–91. http://dx.doi.org/10.1366/0003702981944355.

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Fourier transform infrared attenuated total reflectance and Fourier transform Raman spectra of the series of aqueous alkali metal oxalates—lithium oxalate (Li2C2O4), sodium oxalate (Na2C2O4), potassium oxalate (K2C2O4), rubidium oxalate (Rb2C2O4), and cesium oxalate (Cs2C2O4)—are presented for the first time. Fourier transform Raman spectra of the solid oxalates are also presented for the first time. The solid and aqueous oxalate ions are assumed to possess D2 h and D2 d symmetry, respectively, and the assignment of fundamental vibrational modes is made accordingly. The effect of increasing al

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2

Yin, Xia, Song-Liang Cai, Sheng-Run Zheng, Jun Fan, and Wei-Guang Zhang. "A new two-dimensional cadmium coordination polymer with 1H-imidazole-4-carboxylate and oxalate." Acta Crystallographica Section C Crystal Structure Communications 68, no. 7 (2012): m177—m180. http://dx.doi.org/10.1107/s0108270112023153.

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The title compound, poly[aqua(μ2-1H-imidazole-4-carboxylato-κ3N3,O:O′)hemi(μ2-oxalato-κ4O1,O2:O1′,O2′)cadmium(II)], [Cd(C4H3N2O2)(C2O4)0.5(H2O)]n, exhibits a two-dimensional network. The CdIIcation is coordinated to one N atom and two carboxylate O atoms from two 1H-imidazole-4-carboxylate (Himc) ligands, two carboxylate O atoms from the bridging oxalate anion and one ligated water molecule; these six donor atoms form a distorted octahedral configuration. The oxalate anion lies on a centre of inversion. The Himc ligands connect the CdIIcations to form –Cd–Himc–Cd–Himc–Cd– zigzag chains, with a

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3

Diop, Mouhamadou Birame, Libasse Diop, Laurent Plasseraud та Thierry Maris. "Crystal structure of 2-methyl-1H-imidazol-3-ium aquatrichlorido(oxalato-κ2O,O′)stannate(IV)". Acta Crystallographica Section E Crystallographic Communications 71, № 5 (2015): 520–22. http://dx.doi.org/10.1107/s2056989015005988.

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The tin(IV) atom in the complex anion of the title salt, (C4H7N2)[Sn(C2O4)Cl3(H2O)], is in a distorted octahedral coordination environment defined by three chlorido ligands, an oxygen atom from a water molecule and two oxygen atoms from a chelating oxalate anion. The organic cation is linked through a bifurcated N—H...O hydrogen bond to the free oxygen atoms of the oxalate ligand of the complex [Sn(H2O)Cl3(C2O4)]−anion. Neighbouring stannate(IV) anions are linked through O—H...O hydrogen bonds involving the water molecule and the two non-coordinating oxalate oxygen atoms. In combination with a

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4

Sharma, Ashwani K., and Tej P. Singh. "Structure of oxalate-substituted diferric mare lactoferrin at 2.7 Å resolution." Acta Crystallographica Section D Biological Crystallography 55, no. 11 (1999): 1792–98. http://dx.doi.org/10.1107/s0907444999009439.

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Lactoferrin binds two Fe3+ and two CO^{2-}_{3} ions with high affinity. It can also bind other metal ions and anions. In order to determine the perturbations in the environments of the binding sites in the N and C lobes and elsewhere in the protein, the crystal structure of oxalate-substituted diferric mare lactoferrin has been determined at 2.7 Å resolution. The final model has a crystallographic R factor of 21.3% for all data in the resolution range 17.0–2.7 Å. The substitution of an oxalate anion does not perturb the overall structure of the protein, but produces several significant changes

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5

Li, Zhi-Feng, Yi-Chao Zhang, Xiao-Qin Hu та Chun-Xiang Wang. "Crystal structure of poly[μ6-adipato-diaquadi-μ2-oxalato-didysprosium(III)]". Acta Crystallographica Section E Structure Reports Online 70, № 12 (2014): m399—m400. http://dx.doi.org/10.1107/s1600536814024544.

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In the title coordination polymer, [Dy2(C6H8O4)(C2O4)2(H2O)2]n, the asymmetric unit consists of one Dy3+cation, one half of an adipate anion, two halves of oxalate anions and one coordinating water molecule. The adipate and oxalate ions are located on centres of inversion. The Dy3+cation has a distorted tricapped trigonal–prismatic geometry and is coordinated by nine O atoms, four belonging to three adipate anions, four to two oxalate anions and one from an aqua ligand. The cations are bridged by adipate ligands, generating a two-dimensional network parallel to (010). This network is further e

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6

Gerencser, G. A., M. A. Cattey, and G. A. Ahearn. "Sulfate/oxalate exchange by lobster hepatopancreatic basolateral membrane vesicles." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 269, no. 3 (1995): R572—R577. http://dx.doi.org/10.1152/ajpregu.1995.269.3.r572.

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Purified basolateral membrane vesicles (BLMV) were prepared from lobster hepatopancreas by osmotic disruption and discontinuous sucrose gradient centrifugation. Radiolabeled sulfate uptake was stimulated by 10 mM intravesicular oxalate compared with gluconate-loaded vesicles. Sulfate/oxalate exchange was not affected by transmembrane valinomycin-induced potassium diffusion potentials (inside negative or inside positive), suggesting electroneutral anion transport. Sulfate uptake was not stimulated by the similar carboxylic anions formate, succinate, oxaloacetate, or ketoglutarate. Sulfate influ

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7

Gapinska, Agata, Alan J. Lough, and Ulrich Fekl. "Coordination compounds containing bis-dithiolene-chelated molybdenum(IV) and oxalate: comparison of terminal with bridging oxalate." Acta Crystallographica Section E Crystallographic Communications 73, no. 8 (2017): 1202–7. http://dx.doi.org/10.1107/s205698901701026x.

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Two coordination compounds containing tetra-n-butylammonium cations and bis-tfd-chelated molybdenum(IV) [tfd2− = S2C2(CF3)2 2−] and oxalate (ox2−, C2O4 2−) in complex anions are reported, namely bis(tetra-n-butylammonium) bis(1,1,1,4,4,4-hexafluorobut-2-ene-2,3-dithiolato)oxalatomolybdate(IV)–chloroform–oxalic acid (1/1/1), (C16H36N)2[Mo(C4F6S2)2(C2O4)]·CHCl3·C2H2O4 or (N n Bu4)2[Mo(tfd)2(ox)]·CHCl3·C2H2O4, and bis(tetra-n-butylammonium) μ-oxalato-bis[bis(1,1,1,4,4,4-hexafluorobut-2-ene-2,3-dithiolato)molybdate(IV)], (C16H36N)2[Mo2(C4F6S2)4(C2O4)] or (N n Bu4)2[(tfd)2Mo(μ-ox)Mo(tfd)2]. They co

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8

Freel, Robert W., Marguerite Hatch, and N. D. Vaziri. "Conductive pathways for chloride and oxalate in rabbit ileal brush-border membrane vesicles." American Journal of Physiology-Cell Physiology 275, no. 3 (1998): C748—C757. http://dx.doi.org/10.1152/ajpcell.1998.275.3.c748.

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To evaluate the possibility that an apical membrane conductive pathway for oxalate is present in the rabbit distal ileum, we studied oxalate ([14C]oxalate) and chloride (36Cl) uptake into brush-border membrane vesicles enriched 15- to 18-fold in sucrase activity. Voltage-sensitive pathways for oxalate and chloride were identified by the stimulation of uptake provided by an inwardly directed potassium diffusion potential in the presence of valinomycin. Additionally, outwardly directed oxalate (or chloride) gradients stimulated [14C]oxalate (or36Cl) uptake to a greater degree in the absence of v

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9

Ko, Narae, Felix Knauf, Zhirong Jiang, Daniel Markovich, and Peter S. Aronson. "Sat1 is dispensable for active oxalate secretion in mouse duodenum." American Journal of Physiology-Cell Physiology 303, no. 1 (2012): C52—C57. http://dx.doi.org/10.1152/ajpcell.00385.2011.

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Mice deficient for the apical membrane oxalate transporter SLC26A6 develop hyperoxalemia, hyperoxaluria, and calcium oxalate stones due to a defect in intestinal oxalate secretion. However, the nature of the basolateral membrane oxalate transport process that operates in series with SLC26A6 to mediate active oxalate secretion in the intestine remains unknown. Sulfate anion transporter-1 (Sat1 or SLC26A1) is a basolateral membrane anion exchanger that mediates intestinal oxalate transport. Moreover, Sat1-deficient mice also have a phenotype of hyperoxalemia, hyperoxaluria, and calcium oxalate s

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10

Yusenko, Elena, Evgeniya Polyntseva, Anna Lyzhova, and Olga Kalyakina. "Determination of Oxalate and Some Inorganic Anions in Green and Black Tea." Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences 67, no. 4-5 (2013): 429–32. http://dx.doi.org/10.2478/prolas-2013-0076.

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Abstract Oxalate concentration differs in various daily consumed food products. The role of oxalic acid in the human body is very significant, as its compounds are responsible for the stability of biological membranes. However, insoluble calcium and magnesium oxalates can be accumulated in the body in the form of kidney stones. Oxalate concentration has been measured by high performance liquid, gas after derivatization and ion chromatography (IC). The most effective method for the simultaneous determination of oxalate and inorganic anions is ion chromatography with conductometric detection. He

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11

Whittamore, Jonathan M., Christine E. Stephens, and Marguerite Hatch. "Absence of the sulfate transporter SAT-1 has no impact on oxalate handling by mouse intestine and does not cause hyperoxaluria or hyperoxalemia." American Journal of Physiology-Gastrointestinal and Liver Physiology 316, no. 1 (2019): G82—G94. http://dx.doi.org/10.1152/ajpgi.00299.2018.

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The anion exchanger SAT-1 [sulfate anion transporter 1 (Slc26a1)] is considered an important regulator of oxalate and sulfate homeostasis, but the mechanistic basis of these critical roles remain undetermined. Previously, characterization of the SAT-1-knockout (KO) mouse suggested that the loss of SAT-1-mediated oxalate secretion by the intestine was responsible for the hyperoxaluria, hyperoxalemia, and calcium oxalate urolithiasis reportedly displayed by this model. To test this hypothesis, we compared the transepithelial fluxes of 14C-oxalate, 35[Formula: see text], and 36Cl− across isolated

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12

Manche, Alexis Gilles, Atin Pramanik, and A. Robert Armstrong. "The Challenge of Polyanion Redox Process in Oxalates." ECS Meeting Abstracts MA2024-01, no. 5 (2024): 707. http://dx.doi.org/10.1149/ma2024-015707mtgabs.

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Lately, polyanionic compounds have received great interest as alternative cathode materials to conventional oxides due to their different advantages in cost, safety, structural stability, as well as being environmentally friendly. However, the vast majority of polyanionic cathodes reported so far rely primarily upon the redox reaction of the transition metal for lithium/sodium transfer. The development of multielectron redox-active cathode materials is a top priority for achieving high energy density with long cycle life in the next-generation secondary battery applications. Triggering anion r

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13

Moon, Dohyun, та Jong-Ha Choi. "Crystal structure of bis[(oxalato-κ2O1,O2)(1,4,8,11-tetraazacyclotetradecane-κ4N)chromium(III)] dichromate octahydrate from synchrotron X-ray data". Acta Crystallographica Section E Crystallographic Communications 73, № 3 (2017): 403–6. http://dx.doi.org/10.1107/s2056989017002614.

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The asymmetric unit of the title compound, [Cr(C2O4)(C10H24N4)]2[Cr2O7]·8H2O (C10H24N4= 1,4,8,11-tetraazacyclotetradecane, cyclam; C2O4= oxalate, ox) contains one [Cr(ox)(cyclam)]+cation, one half of a dichromate anion that lies about an inversion centre so that the bridging O atom is equally disordered over two positions, and four water molecules. The terminal O atoms of the dichromate anion are also disordered over two positions with a refined occupancy ratio 0.586 (6):0.414 (6). The CrIIIion is coordinated by the four N atoms of the cyclam ligand and one bidentate oxalato ligand in acisarra

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14

Baggio, B., G. Gambaro, S. Zambon, et al. "Anomalous phospholipid n-6 polyunsaturated fatty acid composition in idiopathic calcium nephrolithiasis." Journal of the American Society of Nephrology 7, no. 4 (1996): 613–20. http://dx.doi.org/10.1681/asn.v74613.

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Anomalies in the erythrocyte transport of anions and cations have been described in idiopathic calcium oxalate nephrolithiasis and seem to play a pathogenetic role in this disease. In consideration of the hypothesis that the complex array of ion flux cell abnormalities is an epiphenomenon of an anomaly in the composition of cell membranes, this study investigated cell-membrane lipid composition. In idiopathic calcium oxalate renal stone formers, in which ion transport abnormalities were present, and in healthy control subjects, plasma and erythrocyte membrane lipid composition, the erythrocyte

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15

Gerencser, G. A., C. Burgin, F. Robbins, and G. A. Ahearn. "The oxalate/sulfate antiporter in lobster hepatopancreas: internal and external binding constants." Journal of Experimental Biology 203, no. 9 (2000): 1497–502. http://dx.doi.org/10.1242/jeb.203.9.1497.

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Utilizing a purified basolateral plasma membrane vesicle (BLMV) preparation containing a sulfate/oxalate antiporter, it was demonstrated that sulfate exhibited similar binding characteristics to the transporter whether bound internally or externally. It was also demonstrated that oxalate had similar binding characteristics to the antiporter whether it was bound internally or externally. Oxalate had a greater affinity to the transporter than did sulfate. Several organic anions affected binding and, therefore, overall transport by the antiporter. Most notably, sulfate was the only anion that sti

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16

Rajkumar, M. Ambrose, S. Stanly John Xavier, S. Anbarasu, Prem Anand Devarajan, and M. NizamMohideen. "2-Amino-5-nitropyridinium hydrogen oxalate." Acta Crystallographica Section E Structure Reports Online 70, no. 4 (2014): o473—o474. http://dx.doi.org/10.1107/s160053681400525x.

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In the cation of the title molecular salt, C5H6N3O2+·C2HO4−, the dihedral angle between the aromatic ring and the nitro group is 3.5 (3)°; in the anion, the dihedral angle between the CO2 and CO2H planes is 10.5 (2)°. In the crystal, the anions are linked into [100] chains by O—H...O hydrogen bonds. The cations cross-link the chains by way of N—H...O hydrogen bonds and the structure is consolidated by C—H...O interactions.

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17

Freel, Robert W., Jonathan M. Whittamore, and Marguerite Hatch. "Transcellular oxalate and Cl− absorption in mouse intestine is mediated by the DRA anion exchanger Slc26a3, and DRA deletion decreases urinary oxalate." American Journal of Physiology-Gastrointestinal and Liver Physiology 305, no. 7 (2013): G520—G527. http://dx.doi.org/10.1152/ajpgi.00167.2013.

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Active transcellular oxalate transport in the mammalian intestine contributes to the homeostasis of this important lithogenic anion. Several members of the Slc26a gene family of anion exchangers have a measurable oxalate affinity and are expressed along the gut, apically and basolaterally. Mouse Slc26a6 (PAT1) targets to the apical membrane of enterocytes in the small intestine, and its deletion results in net oxalate absorption and hyperoxaluria. Apical exchangers of the Slc26a family that mediate oxalate absorption have not been established, yet the Slc26a3 [downregulated in adenoma (DRA)] p

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Markovich, Daniel. "Physiological roles of renal anion transporters NaS1 and Sat1." American Journal of Physiology-Renal Physiology 300, no. 6 (2011): F1267—F1270. http://dx.doi.org/10.1152/ajprenal.00061.2011.

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This review will briefly summarize current knowledge on the renal anion transporters sodium-sulfate cotransporter-1 (NaS1; Slc13a1) and sulfate-anion transporter-1 (Sat1; Slc26a1). NaS1 and Sat1 mediate renal proximal tubular sulfate reabsorption and thereby regulate blood sulfate levels. Sat1 also mediates renal oxalate transport and controls blood oxalate levels. Targeted disruption of murine NaS1 and Sat1 leads to hyposulfatemia and hypersulfaturia. Sat1 null mice also exhibit hyperoxalemia, hyperoxaluria, and calcium oxalate urolithiasis. NaS1 and Sat1 null mice also have other phenotypes

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Misiewicz, Bryan, Donald Mencer, William Terzaghi, and Adam L. VanWert. "Analytical Methods for Oxalate Quantification: The Ubiquitous Organic Anion." Molecules 28, no. 7 (2023): 3206. http://dx.doi.org/10.3390/molecules28073206.

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Oxalate is a divalent organic anion that affects many biological and commercial processes. It is derived from plant sources, such as spinach, rhubarb, tea, cacao, nuts, and beans, and therefore is commonly found in raw or processed food products. Oxalate can also be made endogenously by humans and other mammals as a byproduct of hepatic enzymatic reactions. It is theorized that plants use oxalate to store calcium and protect against herbivory. Clinically, oxalate is best known to be a major component of kidney stones, which commonly contain calcium oxalate crystals. Oxalate can induce an infla

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Pravica, Michael, Roman Chernikov, Kevin Ayala-Pineda, Jianbao Zhao, Petrika Cifligu, and Cheyenne McGlothen. "Observation of pressure-induced electron transfer in SnC2O4." Physical Chemistry Chemical Physics 23, no. 10 (2021): 5969–74. http://dx.doi.org/10.1039/d1cp00306b.

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Dziuk, Błażej, Bartosz Zarychta, and Krzysztof Ejsmont. "Crystal structure of isobutylammonium hydrogen oxalate hemihydrate." Acta Crystallographica Section E Structure Reports Online 70, no. 11 (2014): o1175. http://dx.doi.org/10.1107/s1600536814022697.

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In the title hydrated molecular salt, C4H12N+·C2HO4−·0.5H2O, the O atom of the water molecule lies on a crystallographic twofold axis. The dihedral angle between the CO2and CO2H planes of the anion is 18.47 (8)°. In the crystal, the anions are connected to each other by strong near-linear O—H...O hydrogen bonds. The water molecules are located between the chains of anions and isobutylamine cations; their O atoms participate as donors and acceptors, respectively, in O—H...O and N—H...O hydrogen bonds, which form channels (dimensions = 4.615 and 3.387 Å) arranged parallel to [010].

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Moon, Dohyun, та Jong-Ha Choi. "Crystal structure ofcis-dichlorido(1,4,8,11-tetraazacyclotetradecane-κ4N)chromium(III) (oxalato-κ2O1,O2)(1,4,8,11-tetraazacyclotetradecane-κ4N)chromium(III) bis(perchlorate) from synchrotron data". Acta Crystallographica Section E Crystallographic Communications 72, № 10 (2016): 1417–20. http://dx.doi.org/10.1107/s2056989016014134.

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In the asymmetric unit of the title compound, [CrCl2(C10H24N4)][Cr(C2O4)(C10H24N4)](ClO4)2(C10H24N4= 1,4,8,11-tetraazacyclotetradecane, cyclam; C2O4= oxalate, ox), there are two independent halves of the [CrCl2(cyclam)]+and [Cr(ox)(cyclam)]+cations, and one perchlorate anion. In the complex cations, which are completed by application of twofold rotation symmetry, the CrIIIions are coordinated by the four N atoms of a cyclam ligand, and by two chloride ions or one oxalate bidentate ligand in acisarrangement, displaying an overall distorted octahedral coordination environment. The Cr—N(cyclam) b

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Liu, Chen, та Khalil A. Abboud. "Crystal structures of μ-oxalato-bis[azido(histamine)copper(II)] and μ-oxalato-bis[(dicyanamido)(histamine)copper(II)]". Acta Crystallographica Section E Crystallographic Communications 71, № 11 (2015): 1379–83. http://dx.doi.org/10.1107/s2056989015019908.

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The title compounds, μ-oxalato-κ4O1,O2:O1′,O2′-bis[[4-(2-aminoethyl)-1H-imidazole-κ2N3,N4](azido-κN1)copper(II)], [Cu2(C2O4)(N3)2(C5H9N3)2], (I), and μ-oxalato-κ4O1,O2:O1′,O2′-bis[[4-(2-aminoethyl)-1H-imidazole-κ2N3,N4](dicyanamido-κN1)copper(II)], [Cu2(C2O4)(C2N3)2(C5H9N3)2], (II), are two oxalate-bridged dinuclear copper complexes. Each CuIIion adopts a five-coordinate square-pyramidal coordination sphere where the basal N2O2plane is formed by two O atoms of the oxalate ligand and two N atoms of a bidentate chelating histamine molecule. The apical coordination site in compound (I) is occupie

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Traut-Johnstone, Telisha, Frederik H. Kriel, Raymond Hewer, and D. Bradley G. Williams. "4-(3-Azaniumylpropyl)morpholin-4-ium chloride hydrogen oxalate: an unusual example of a dication with different counter-anions." Acta Crystallographica Section C Structural Chemistry 70, no. 12 (2014): 1121–24. http://dx.doi.org/10.1107/s2053229614022232.

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The mixed organic–inorganic title salt, C7H18N2O2+·C2HO4−·Cl−, forms an assembly of ionic components which are stabilized through a series of hydrogen bonds and charge-assisted intermolecular interactions. The title assembly crystallizes in the monoclinicC2/cspace group withZ= 8. The asymmetric unit consists of a 4-(3-azaniumylpropyl)morpholin-4-ium dication, a hydrogen oxalate counter-anion and an inorganic chloride counter-anion. The organic cations and anions are connected through a network of N—H...O, O—H...O and C—H...O hydrogen bonds, forming several intermolecular rings that can be desc

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Gueye, Ndongo, Libasse Diop та Helen Stoeckli-Evans. "Tetrakis(dipropylammonium) tetrakis(oxalato-κ2O1,O2)stannate(IV) monohydrate: a complex with an eight-coordinate SnIVatom". Acta Crystallographica Section E Structure Reports Online 70, № 2 (2014): m49—m50. http://dx.doi.org/10.1107/s160053681303496x.

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In the title salt, [(CH3CH2CH2)2NH2]4[Sn(C2O4)4]·H2O, the SnIVatom of the stannate anion is located on a special position with -42msymmetry. It is eight-coordinated by four chelating oxalate anions. The dipropylammonium cation possesses mirror symmetry while the lattice water molecule is disordered about a position with -42msymmetry and has an occupancy of 0.25. In the crystal, the anions and cations are linked by N—H...O hydrogen bonds, forming a three-dimensional network. This network is futher stabilized by weak O—H...O hydrogen bonds involving the water molecules and oxalate O atoms. The c

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Sarr, Modou, Waly Diallo, Aminata Diasse-Sarr, Laurent Plasseraud та Hélène Cattey. "Tris(cyclohexylammonium)cis-dichloridobis(oxalato-κ2O1,O2)stannate(IV) chloride monohydrate". Acta Crystallographica Section E Structure Reports Online 69, № 11 (2013): m581—m582. http://dx.doi.org/10.1107/s1600536813026901.

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The crystal structure of the title compound, (C6H14N)3[Sn(C2O4)2Cl2]Cl·H2O, contains three cyclohexylammonium cations, one stannate(IV) dianion, one isolated chloride anion and one lattice water molecule. The cyclohexylammonium cations adopt chair conformations. In the complex anion, two bidentate oxalate ligands and two chloride anions incispositions coordinate octahedrally to the central SnIVatom. The cohesion of the molecular entities is ensured by the formation of N—H...O, O—H...O, O—H...Cl and N—H...Cl interactions involving cations, anions and the lattice water molecule, giving rise to a

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Karniski, Lawrence P., Marius Lötscher, Monica Fucentese, Helen Hilfiker, Jürg Biber, and Heini Murer. "Immunolocalization of sat-1 sulfate/oxalate/bicarbonate anion exchanger in the rat kidney." American Journal of Physiology-Renal Physiology 275, no. 1 (1998): F79—F87. http://dx.doi.org/10.1152/ajprenal.1998.275.1.f79.

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The rat liver sulfate/bicarbonate/oxalate exchanger (sat-1) transports sulfate across the canalicular membrane in exchange for either bicarbonate or oxalate. Sulfate/oxalate exchange has been detected in the proximal tubule of the kidney, where it is probably involved in the reabsorption of filtered sulfate and the secretion of oxalate and may contribute to oxalate-dependent chloride reabsorption. Screening of a renal cortex cDNA library determined that sat-1 is expressed in the rat kidney. To evaluate this anion exchanger, the sat-1 protein was expressed in Sf9 cells. Sodium-independent sulfa

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Hugentobler, G., G. Fricker, J. L. Boyer, and P. J. Meier. "Anion transport in basolateral (sinusoidal) liver plasma-membrane vesicles of the little skate (Raja erinacea)." Biochemical Journal 247, no. 3 (1987): 589–95. http://dx.doi.org/10.1042/bj2470589.

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The mechanism(s) of [35S]sulphate transport was investigated in basolateral liver plasma-membrane vesicles of the little skate elasmobranch, Raja erinacea. Imposition of an intravesicular alkaline pH gradient (pH 8.0 in/pH 6.0 out) stimulated sulphate uptake 5-10-fold compared with pH-equilibrated (pH 8.0 in = out) conditions and 2-3-fold over equilibrium sulphate uptake (overshoot). This pH-gradient-stimulated sulphate uptake was temperature-dependent, saturable with increasing concentrations of sulphate and could be inhibited by the protonophore carbonyl cyanide m-chlorophenylhydrazone and t

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Vu, Van T. H., Thanh T. M. Dinh, Nam T. Pham, Thom T. Nguyen, Phuong T. Nguyen, and Hang T. X. To. "Evaluation of the Corrosion Inhibiting Capacity of Silica/Polypyrrole-Oxalate Nanocomposite in Epoxy Coatings." International Journal of Corrosion 2018 (September 2, 2018): 1–10. http://dx.doi.org/10.1155/2018/6395803.

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Silica/Polypyrrole nanocomposites (SiO2/PPy) incorporating oxalate as counter anion (SiO2/PPyOx) were chemically polymerized in the solution with the presence of pyrrole, silica, and sodium oxalate. Nanocomposites SiO2/PPyOx at different concentrations of oxalate anion were characterized with FTIR, XRD, EDX, TGA, and TEM. The corrosion protective properties for carbon steel of nanocomposites in epoxy coating were studied by electrochemical techniques including electrochemical impedance spectroscopy (EIS) and open circuit potential (OCP). FTIR results of nanocomposites show a slightly red-shift

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Jordanovska, Vera, Pancě Naumov, Moon-Jib Kim, Han-Jun Lee, and Seik Weng Ng. "Bis(2-hydroxyethylammonium) oxalate." Acta Crystallographica Section E Structure Reports Online 57, no. 1 (2000): o45—o47. http://dx.doi.org/10.1107/s160053680001881x.

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In bis(2-hydroxyethylammonium) oxalate, 2C2H8NO+·C2O42−, hydrogen bonds involving the hydroxy and ammonium groups connect the carboxyl O atoms of the oxalate anion into a three-dimensional network structure.

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Karniski, L. P., and P. S. Aronson. "Anion exchange pathways for Cl- transport in rabbit renal microvillus membranes." American Journal of Physiology-Renal Physiology 253, no. 3 (1987): F513—F521. http://dx.doi.org/10.1152/ajprenal.1987.253.3.f513.

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We evaluated the mechanisms of chloride transport in microvillus membrane vesicles isolated from the rabbit renal cortex. The presence of Cl-formate exchange was confirmed. Outward gradients of oxaloacetate, HCO3, acetate, lactate, succinate, sulfate, and p-aminohippurate (PAH) stimulated the rate of Cl uptake minimally (less than 25%) or not at all. However, an outward gradient of oxalate stimulated Cl uptake by 70%, and an outward Cl gradient induced uphill oxalate uptake, indicating Cl-oxalate exchange. Moreover, an outward formate gradient induced uphill oxalate uptake, indicating formate-

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COMERFORD, N. B., and M. F. SKINNER. "RESIDUAL PHOSPHORUS SOLUBILITY FOR AN ACID, CLAYEY, FORESTED SOIL IN THE PRESENCE OF OXALATE AND CITRATE." Canadian Journal of Soil Science 69, no. 1 (1989): 111–17. http://dx.doi.org/10.4141/cjss89-010.

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A highly weathered, clayey soil was sampled 14 yr after a Pinus radiata stand was broadcast fertilized with 0, 50 and 200 kg P ha−1 as ordinary superphosphate. Incremental loadings of oxalate and citrate anions from 10 to 100 μmol of anion g−1 soil were evaluated for increased soluble, reactive P (SRP) and soluble, nonreactive (SNP) P. Sorption isotherms were compared to evaluate the effect of the previous fertilization on P sorption by the soil material sampled, and also to measure SNP displacement by orthophosphate-P. A portion of the SNP pool was more readily released than SRP and orthophos

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Markovich, Daniel. "Slc13a1 and Slc26a1 KO Models Reveal Physiological Roles of Anion Transporters." Physiology 27, no. 1 (2012): 7–14. http://dx.doi.org/10.1152/physiol.00041.2011.

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Anion transporters NaS1 (SLC13A1) and Sat1 (SLC26A1) mediate sulfate (re)absorption across renal proximal tubule and small intestinal epithelia, thereby regulating blood sulfate levels. Disruption of murine NaS1 and Sat1 genes leads to hyposulfatemia and hypersulfaturia. Sat1-null mice also exhibit hyperoxalemia, hyperoxaluria, and calcium oxalate urolithiasis. This review will highlight the current pathophysiological features of NaS1- and Sat1-null mice resulting from alterations in circulating sulfate and oxalate anion levels.

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Chen, Junsheng, and A. B. P. Lever. "Surface electrochemistry and electrocatalytic activity of ion pairs formed from oppositely-charged phthalocyanine and porphyrin species." Journal of Porphyrins and Phthalocyanines 11, no. 03 (2007): 151–59. http://dx.doi.org/10.1142/s1088424607000199.

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Self-assembled ion pairs are deposited onto a graphite electrode surface by dipping the electrode sequentially into phthalocyanine cations and anions, or a phthalocyanine cation and porphyrin anion. The electrochemical properties of these surface-bound ion pairs are compared with the properties of the individual surface-bound components. The order of deposition is shown to be crucial, implying that these species lie flat on the surface. A detailed study of the electrocatalytic oxidation of oxalate anion is used to explore their reactivity as a function of deposition order.

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Kittipong, Chainok, Phailyn Khemthong, Filip Kielar, and Yan Zhou. "Crystal structure of a mixed-ligand terbium(III) coordination polymer containing oxalate and formate ligands, having a three-dimensional fcu topology." Acta Crystallographica Section E Crystallographic Communications 72, no. 1 (2016): 87–91. http://dx.doi.org/10.1107/s205698901502397x.

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The title compound, poly[(μ3-formato)(μ4-oxalato)terbium(III)], [Tb(CHO2)(C2O4)]n, is a three-dimensional coordination polymer, and is isotypic with the LaIII, CeIIIand SmIIIanalogues. The asymmetric unit contains one TbIIIion, one formate anion (CHO2−) and half of an oxalate anion (C2O42−), the latter being completed by application of inversion symmetry. The TbIIIion is nine-coordinated in a distorted tricapped trigonal–prismatic manner by two chelating carboxylate groups from two C2O42−ligands, two carboxylate oxygen atoms from another two C2O42−ligands and three oxygen atoms from three CHO2

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Freel, Robert W., Marguerite Hatch, Mike Green, and Manoocher Soleimani. "Ileal oxalate absorption and urinary oxalate excretion are enhanced in Slc26a6 null mice." American Journal of Physiology-Gastrointestinal and Liver Physiology 290, no. 4 (2006): G719—G728. http://dx.doi.org/10.1152/ajpgi.00481.2005.

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Intestinal oxalate transport, mediated by anion exchange proteins, is important to oxalate homeostasis and consequently to calcium oxalate stone diseases. To assess the contribution of the putative anion transporter (PAT)1 (Slc26a6) to transepithelial oxalate transport, we compared the unidirectional and net fluxes of oxalate across isolated, short-circuited segments of the distal ileum of wild-type (WT) mice and Slc26a6 null mice [knockout (KO)]. Additionally, urinary oxalate excretion was measured in both groups. In WT mouse ileum, there was a small net secretion of oxalate ([Formula: see te

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Wang, Tong, Allan L. Egbert, Peter S. Aronson, and Gerhard Giebisch. "Effect of metabolic acidosis on NaCl transport in the proximal tubule." American Journal of Physiology-Renal Physiology 274, no. 6 (1998): F1015—F1019. http://dx.doi.org/10.1152/ajprenal.1998.274.6.f1015.

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In metabolic acidosis, the capacity of the proximal tubule for bicarbonate absorption is enhanced, whereas NaCl reabsorption is inhibited. Recent evidence indicates that transcellular NaCl absorption in the proximal tubule is mediated by apical membrane Cl−/formate exchange and Cl−/oxalate exchange, in parallel with recycling of these organic anions. We evaluated whether the effect of metabolic acidosis to inhibit NaCl reabsorption in the proximal tubule is due at least in part to inhibition of organic anion-dependent NaCl transport in this nephron segment. Absorption rates of bicarbonate ([Fo

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Ginting, Sahta, Bruce B. Johnson, and Sabine Wilkens. "Alleviation of aluminium phytotoxicity on soybean growth by organic anions in nutrient solutions." Functional Plant Biology 25, no. 8 (1998): 901. http://dx.doi.org/10.1071/pp98048.

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The effect of aluminium (Al) phytotoxicity on the growth of soybean (Glycine max (L.) Merr.) cv. ‘Forrest’ in nutrient solutions (pH 4.25) and its alleviation by organic anions has been investigated. Both 100 and 500 µM Al caused significant reduction in root and shoot lengths and root dry weights over 15 days. Citrate, oxalate, tartrate, malate, malonate and lactate at 1000 µM and humic acid at 1 g L-1 were used to alleviate phytotoxicity caused by the presence of 500 µM Al. The effectiveness of the organic anions in alleviating Al phytotoxicity, measured by the change in root length, was in

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Heneghan, John F., Arash Akhavein, Maria J. Salas, et al. "Regulated transport of sulfate and oxalate by SLC26A2/DTDST." American Journal of Physiology-Cell Physiology 298, no. 6 (2010): C1363—C1375. http://dx.doi.org/10.1152/ajpcell.00004.2010.

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Nephrolithiasis in the Slc26a6−/− mouse is accompanied by 50–75% reduction in intestinal oxalate secretion with unchanged intestinal oxalate absorption. The molecular identities of enterocyte pathways for oxalate absorption and for Slc26a6-independent oxalate secretion remain undefined. The reported intestinal expression of SO42− transporter SLC26A2 prompted us to characterize transport of oxalate and other anions by human SLC26A2 and mouse Slc26a2 expressed in Xenopus oocytes. We found that hSLC26A2-mediated [14C]oxalate uptake ( K1/2 of 0.65 ± 0.08 mM) was cis-inhibited by external SO42− ( K

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Jennings, M. L., and M. F. Adame. "Characterization of oxalate transport by the human erythrocyte band 3 protein." Journal of General Physiology 107, no. 1 (1996): 145–59. http://dx.doi.org/10.1085/jgp.107.1.145.

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This paper describes characteristics of the transport of oxalate across the human erythrocyte membrane. Treatment of cells with low concentrations of H2DIDS (4,4'-diisothiocyanatostilbene-2,2'-disulfonate) inhibits Cl(-)-Cl- and oxalate-oxalate exchange to the same extent, suggesting that band 3 is the major transport pathway for oxalate. The kinetics of oxalate and Cl- self-exchange fluxes indicate that the two ions compete for a common transport site; the apparent Cl- affinity is two to three times higher than that of oxalate. The net exchange of oxalate for Cl-, in either direction, is acco

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Zheng, Lu-Yi, Yan-Hui Chi, Yuan Liang, Ethan Cottrill, Ning Pan, and Jing-Min Shi. "Green and mild oxidation: from acetate anion to oxalate anion." Journal of Coordination Chemistry 71, no. 23 (2018): 3947–54. http://dx.doi.org/10.1080/00958972.2018.1543870.

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Schaechinger, Thorsten J., and Dominik Oliver. "Nonmammalian orthologs of prestin (SLC26A5) are electrogenic divalent/chloride anion exchangers." Proceedings of the National Academy of Sciences 104, no. 18 (2007): 7693–98. http://dx.doi.org/10.1073/pnas.0608583104.

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Individual members of the mammalian SLC26 anion transporter family serve two fundamentally distinct functions. Whereas most members transport different anion substrates across a variety of epithelia, prestin (SLC26A5) is special, functioning as a membrane-localized motor protein that generates electrically induced motions (electromotility) in auditory sensory hair cells of the mammalian inner ear. The transport mechanism of SLC26 proteins is not well understood, and a mechanistic relation between anion transport and electromotility has been suggested but not firmly established so far. To addre

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Meng, X. J., R. T. Timmer, R. B. Gunn, and R. F. Abercrombie. "Separate entry pathways for phosphate and oxalate in rat brain microsomes." American Journal of Physiology-Cell Physiology 278, no. 6 (2000): C1183—C1190. http://dx.doi.org/10.1152/ajpcell.2000.278.6.c1183.

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ATP-dependent 45Ca uptake in rat brain microsomes was measured in intracellular-like media containing different concentrations of PO4 and oxalate. In the absence of divalent anions, there was a transient 45Ca accumulation, lasting only a few minutes. Addition of PO4did not change the initial accumulation but added a second stage that increased with PO4 concentration. Accumulation during the second stage was inhibited by the following anion transport inhibitors: niflumic acid (50 μM), 4,4′-dinitrostilbene-2,2′-disulfonic acid (DNDS; 250 μM), and DIDS (3–5 μM); accumulation during the initial st

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Gueye, Ndongo, Libasse Diop, Kieran C. Molloy та Gabrielle Kociok-Köhn. "Dibenzylazanium (oxalato-κ2 O,O′)triphenylstannate(IV)". Acta Crystallographica Section E Structure Reports Online 68, № 6 (2012): m854—m855. http://dx.doi.org/10.1107/s1600536812021125.

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The title compound, (C14H16N)[Sn(C6H5)3(C2O2)], was synthesised by allowing C2O4(Bz2NH2)2 (Bz = benzyl) to react with SnPh3Cl. The asymmetric unit is built up by four SnPh3C2O4 anions and four Bz2NH2 cations which are related by a pseudo-inversion centre. Each SnIV cation is five-coordinated by the three phenyl groups and two O atoms belonging to the chelating oxalate ligand; the coordination geometry is that of a distorted trigonal bipyramid. Anions and cations are linked through N—H...O hydrogen bonds into a layer structure parallel to (001). Moreover, the anion–cation pairs are associated b

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Ponjan, Nutcha, Purita Aroonchat, and Kittipong Chainok. "Crystal structure and Hirshfeld surface analysis of 1,2,4-triazolium hydrogen oxalate." Acta Crystallographica Section E Crystallographic Communications 76, no. 2 (2020): 137–40. http://dx.doi.org/10.1107/s2056989019017304.

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The asymmetric unit of the title 1:1 salt 1,2,4-triazolium hydrogen oxalate, C2H4N3 +·C2HO4 − (I), comprises one 1,2,4-triazolium cation and one hydrogen oxalate anion. In the crystal, the hydrogen oxalate anions are linked by O—H...O hydrogen bonds into chains running parallel to [100]. In turn, the anionic chains are linked through the 1,2,4-triazolium cations by charge-assisted +N—H...O− hydrogen bonds into sheets aligned parallel to (01\overline{1}). The sheets are further stacked through π–π interactions between the 1,2,4-triazolium rings [centroid-to-centroid distance = 3.642 (3) Å, norm

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Xie, Qizhi, Rick Welch, Adriana Mercado, Michael F. Romero, and David B. Mount. "Molecular characterization of the murine Slc26a6 anion exchanger: functional comparison with Slc26a1." American Journal of Physiology-Renal Physiology 283, no. 4 (2002): F826—F838. http://dx.doi.org/10.1152/ajprenal.00079.2002.

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We report the molecular and functional characterization of murine Slc26a6, the putative apical chloride-formate exchanger of the proximal tubule. The Slc26a6 transcript is expressed in several tissues, including kidney. Alternative splicing of the second exon generates two distinct isoforms, denoted Slc26a6a and Slc26a6b, which differ in the inclusion of a 23-residue NH2-terminal extension. Functional comparison with murine Slc26a1, the basolateral oxalate exchanger of the proximal tubule, reveals a number of intriguing differences. Whereas Slc26a6 is capable of Cl−, SO[Formula: see text], for

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Bialek, Sebastian, Rebecca Clemens, and Guido J. Reiss. "(Dimethylphosphoryl)methanaminium hydrogen oxalate–oxalic acid (2/1)." Acta Crystallographica Section E Structure Reports Online 70, no. 3 (2014): o312. http://dx.doi.org/10.1107/s1600536814002931.

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The reaction of (dimethylphosphoryl)methanamine (dpma) with oxalic acid in ethanol yielded the title solvated salt, C3H11NOP+·C2HO4−·0.5C2H2O4. Its asymmetric unit consists of one dpmaH+cation, one hydrogen oxalate anion and a half-molecule of oxalic acid located around a twofold rotation axis. The H atom of the hydrogen oxalate anion is statistically disordered over two positions that aretransto each other. The hydrogen oxalate monoanion is not planar (bend angle ∼16°) whereas the oxalic acid molecule shows a significantly smaller bend angle (∼7°). In the crystal, the components are connected

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Odabaşoğlu, Mustafa, and Orhan Büyükgüngör. "3,6-Dioxaoctane-1,8-diammonium oxalate." Acta Crystallographica Section E Structure Reports Online 62, no. 4 (2006): o1524—o1525. http://dx.doi.org/10.1107/s1600536806009822.

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The title compound, C6H18N2O2 2+·C2O4 2−, crystallizes with one half-cation and one half-anion in the asymmetric unit. It contains cyclic N—H...O hydrogen-bonded rings involving 3,6-dioxaoctane-1,8-diammonium and oxalate ions, forming a three-dimensional network.

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Zhang, Bin, Yan Zhang, Zheming Wang та ін. "Two One-Dimensional Copper-Oxalate Frameworks with the Jahn–Teller Effect: [(CH3)3NH]2[Cu(μ-C2O4)(C2O4)]·2.5H2O (I) and [(C2H5)3NH]2[Cu(μ-C2O4)(C2O4)]·H2O (II)". Magnetochemistry 9, № 5 (2023): 120. http://dx.doi.org/10.3390/magnetochemistry9050120.

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Two one-dimensional oxalate-bridged Cu(II) ammonium salts, [(CH3)3NH]2[Cu(μ-C2O4)(C2O4)]·2.5H2O (I) and [(C2H5)3NH]2[Cu(μ-C2O4)(C2O4)]·H2O (II) were obtained and characterized. They were composed of ammonium: (CH3)3NH+ in (I), (C2H5)3NH+ in (II), [Cu(μ-C2O4)(C2O4)2−]n and H2O. The Jahn–Teller-distorted Cu(II) is octahedrally coordinated by six O atoms from three oxalates and forms a one-dimensional zigzag chain. The hydrogen bonds between ammonium, the anion and H2O form a three-dimensional network. There is no hydrogen bond between the anion chains. They were insulated at 20 °C with a relativ

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Piro, Oscar E., Gustavo A. Echeverría, Ana C. González-Baró, and Enrique J. Baran. "Tl2C2O4·H2C2O4: a new crystalline form of thallium(I) oxalate." Zeitschrift für Naturforschung B 70, no. 4 (2015): 249–52. http://dx.doi.org/10.1515/znb-2014-0257.

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AbstractThe title compound was prepared by reaction, in aqueous solution, of Tl2CO3 and H2C2O4·2H2O in a molar ratio of 1:2. Its crystal structure was solved by X-ray diffraction methods. It crystallizes in the monoclinic space group P21/a with Z = 2 molecules per unit cell. The oxalic acid molecule and the oxalate anion are planar, residing on crystallographic inversion centers, and linked to each other by strong O–H···O hydrogen bonds giving rise to a polymeric structure. The Tl(I) ion is in a distorted polyhedral coordination with nine neighboring O atoms, five of oxalate anions and four ot

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