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Journal articles on the topic 'Oxalic acid. Crystal growth'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Traquair, J. A. "Oxalic acid and calcium oxalate produced by Leucostoma cincta and L. persoonii in culture and in peach bark tissues." Canadian Journal of Botany 65, no. 9 (1987): 1952–56. http://dx.doi.org/10.1139/b87-267.

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Oxalic acid and crystals of calcium oxalate were produced during growth of Leucostoma cincta and L. persoonii on potato dextrose agar and in peach bark tissues. The identification of calcium oxalate was based on solubility characteristics, the results of KMnO4 titration, positive staining with silver nitrate – dithiooxamide, and crystal morphology as observed with light and scanning electron microscopes. Oxalic acid was detected by gas chromatography. This is the first report of oxalic acid production by both Leucostoma species causing peach canker. Calcium oxalate crystals observed on or near

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2

. Senthil, K., K. . Elangovan, A. . Senthil, and G. . Vinitha. "GROWTH AND CHARACTERIZATION OF N-METHYLUREA OXALIC (NMUO) ACID SINGLE CRYSTAL." Rasayan Journal of Chemistry 12, no. 03 (2019): 1262–68. http://dx.doi.org/10.31788/rjc.2019.1235174.

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3

Manju, T., and P. Selvarajan. "Growth and Characterization of Mono-Urea Oxalic Acid Crystals." Asian Journal of Materials Chemistry 3, no. 3 (2018): 61–67. http://dx.doi.org/10.14233/ajmc.2018.ajmc-p68.

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4

Tao, Feng, Zhishun Shen, Zhijun Wang, Da Shu, Qi Liu, and Yufeng Sun. "Oxalic Acid-Assisted Hydrothermal Synthesis and Luminescent of Hexagonal NaYF4:Ln3+ (Ln = Sm, Eu, Yb/Er) Micro/Nanoplates." Journal of Nanomaterials 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/5320989.

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Hexagonal NaYF4:Ln3+ micro/nanoplates were successfully synthesized via a hydrothermal method using oxalic acid as a shape modifier. X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and selected area electron diffraction (SAED) have been used to study the morphologies and crystal structure of the products. The effects of the pH values and the molar ratio of oxalic acid to NaOH on the crystal growth have been investigated in detail. The time-dependent experiments have been conducted to investigate the morphology evolution pro

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5

Chithambaram, V., S. Jerome Das, Sivakumar Krishnan, M. Basheer Ahamed, and R. Arivudai Nambi. "Growth and characterization of urea-oxalic acid crystals by solution growth technique." European Physical Journal Applied Physics 64, no. 2 (2013): 20201. http://dx.doi.org/10.1051/epjap/2013130108.

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6

Dalal, P. V. "Nucleation Controlled Growth of Cadmium Oxalate Crystals in Agar Gel and Their Characterization." Indian Journal of Materials Science 2013 (September 19, 2013): 1–5. http://dx.doi.org/10.1155/2013/682950.

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Perfect single crystals of cadmium oxalate have been grown using the slow and controlled reaction between cadmium acetate and oxalic acid in agar gel media at ambient temperature, resulting in the formation of insoluble product Cd(COO)2. Different methods for growing crystals were adopted. The optimum conditions were employed in each method by varying the concentration of gel and reactants, gel setting time, and so forth. Prismatic, transparent single crystal about 20 times larger than the crystals obtained in various other methods at the interstitial by adding impurities in the gel was obtain

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7

Dhivya, R., R. Ezhil Vizhi, and D. Rajan Babu. "Investigation on nucleation kinetics, growth and characterization of urea oxalic acid-ferroelectric single crystal." Journal of Crystal Growth 468 (June 2017): 84–87. http://dx.doi.org/10.1016/j.jcrysgro.2016.12.045.

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8

Thanasekaran, Pounraj, Chih-Ming Liu, Jhen-Fu Cho, and Kuang-Lieh Lu. "Melamine-promoted crystal growth of calcium oxalate monohydrate from calcium nitrate and oxalic acid." Inorganic Chemistry Communications 17 (March 2012): 84–87. http://dx.doi.org/10.1016/j.inoche.2011.12.020.

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9

Abdel-Ghafar, H. M., M. A. M. Ibrahim, H. El-Shall, and A. K. Ismail. "Innovative findings about ferrous oxalate dihydrate crystallization in simulated dihydrate phosphoric acid product." Water Science and Technology 77, no. 12 (2018): 2940–45. http://dx.doi.org/10.2166/wst.2018.294.

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Abstract The basic fundamentals of ferrous oxalate dihydrate (FeC2O4.2H2O) crystallization including supersaturation, nucleation and crystal growth in simulated dihydrate phosphoric acid product with and without cetyl pyridinium chloride (CPC) additive were studied. Oxalic acid and ferrous sulfate heptahydrate crystals were mixed with dilute phosphoric acid (28% P2O5) at 60 °C and the turbidity of the reaction mixture was measured at different time intervals. Induction time of ferrous oxalate dihydrate crystals was calculated at different supersaturation ratios ranging from 2.5 to 6.7. With in

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10

Fomina, M., S. Hillier, J. M. Charnock, K. Melville, I. J. Alexander, and G. M. Gadd. "Role of Oxalic Acid Overexcretion in Transformations of Toxic Metal Minerals by Beauveria caledonica." Applied and Environmental Microbiology 71, no. 1 (2005): 371–81. http://dx.doi.org/10.1128/aem.71.1.371-381.2005.

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ABSTRACT The fungus Beauveria caledonica was highly tolerant to toxic metals and solubilized cadmium, copper, lead, and zinc minerals, converting them into oxalates. This fungus was found to overexcrete organic acids with strong metal-chelating properties (oxalic and citric acids), suggesting that a ligand-promoted mechanism was the main mechanism of mineral dissolution. Our data also suggested that oxalic acid was the main mineral-transforming agent. Cadmium, copper, and zinc oxalates were precipitated by the fungus in the local environment and also in association with the mycelium. The prese

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11

Mahendra, K., and N. K. Udayashankar. "Growth and comparative studies on oxalic acid dihydrate, potassium oxalate hydrate and potassium hydrogen oxalate oxalic acid dihydrate single crystals." Journal of Physics and Chemistry of Solids 138 (March 2020): 109263. http://dx.doi.org/10.1016/j.jpcs.2019.109263.

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12

Vizhi, R. Ezhil, R. Dhivya, and D. Rajan Babu. "Synthesis, growth, optical and mechanical studies of ferroelectric urea-oxalic acid single crystals." Journal of Crystal Growth 452 (October 2016): 213–19. http://dx.doi.org/10.1016/j.jcrysgro.2016.04.038.

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13

Li, Chuanbo, Yongzhi Ning, Taihong Yan, and Weifang Zheng. "Study on the continuous precipitation of U(IV) oxalate in a vortex precipitator." Radiochimica Acta 109, no. 4 (2021): 283–94. http://dx.doi.org/10.1515/ract-2020-0069.

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Abstract The effects of feeding location, stirring speed and apparent average residence time on oxalate crystals size and distribution, tackiness of the product on the walls of reactor and stirring paddle were investigated in a vortex continuous precipitator at 45 °C. The results showed agglomeration happened during nucleation and crystals growth of U(IV) oxalate. Both local supersaturations and agglomeration maked the particles size distribution of U(IV) oxalate from 10–100 µm and the average sizes 35–45 µm. On the other hand, when the nucleation process were controlled to happen in the force

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14

Jeeva, S., S. Muthu, S. Tamilselvan, et al. "Growth, spectroscopic studies, and third order non-linear optical analysis of an organic dicarboxylic acid based single crystal: Urea Oxalic acid." Chinese Journal of Physics 56, no. 4 (2018): 1449–66. http://dx.doi.org/10.1016/j.cjph.2018.05.021.

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15

Shyfa, Chlarissa Bella Asy, and Kumala Dewi. "Growth, Oxalate and Vitamin C Content of Red Amaranth (Amaranthus tricolor L.) Treated with Salicylic Acid." HAYATI Journal of Biosciences 28, no. 1 (2021): 23. http://dx.doi.org/10.4308/hjb.28.1.23.

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Red amaranth (Amaranthus tricolor L.) contains phytochemicals that are important for human health, however it also contains oxalate that may cause uric acid problem in human health. This experiment was carried out to evaluate the effect of salicylic acid (SA) on growth, oxalate, chlorophyll, and vitamin C contents in red amaranth. Red amaranth seeds were germinated in a plastic pot containing a mixture of top soil and organic fertilizer. Three week-old seedlings were applied with SA of 0 M (control), 10-8, 10-6, 10-4 or 10-2 M. Five replicates were prepared for each treatment. Growth parameter

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16

Li, Chuanbo, Yongzhi Ning, Taihong Yan, and Weifang Zheng. "Studies on nucleation and crystal growth kinetics of uranium(IV) oxalate." Radiochimica Acta 108, no. 3 (2020): 185–93. http://dx.doi.org/10.1515/ract-2019-0008.

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AbstractAn improved apparatus is used for nucleation measurements according to Nielsen’s method. A new method is proposed to calculate the dilution ratio N of the reaction solution during nucleation rate determination. With the rule, when the initial apparent supersaturation ratio S′ = f(N) in the dilution tank is controlled from 1.2 to 2.7, crystal nucleus dissolving and secondary nucleation can be avoided satisfactorily. Experiments are realized by varying the supersaturation ratio from 26.0 to 297.5 and temperature from 30 °C to 50 °C. Uranium(IV) oxalate is precipitated by mixing equal vol

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17

Dutton, Martin V., and Christine S. Evans. "Oxalate production by fungi: its role in pathogenicity and ecology in the soil environment." Canadian Journal of Microbiology 42, no. 9 (1996): 881–95. http://dx.doi.org/10.1139/m96-114.

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Oxalate secretion by fungi provides many advantages for their growth and colonization of substrates. The role of oxalic acid in pathogenesis is through acidification of host tissues and sequestration of calcium from host cell walls. The formation of calcium oxalate crystals weakens the cell walls, thereby allowing polygalacturonase to effect degradation more rapidly in a synergistic response. There is good correlation between pathogenesis, virulence, and oxalic acid secretion. Solubility of soil nutrients is achieved by soil-living species, when cations freed by oxalate diffusing in clay layer

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18

Bhagavannarayana, G., S. Parthiban, and Subbiah Meenakshisundaram. "Enhancement of crystalline perfection by organic dopants in ZTS, ADP and KHP crystals as investigated by high-resolution XRD and SEM." Journal of Applied Crystallography 39, no. 6 (2006): 784–90. http://dx.doi.org/10.1107/s0021889806033139.

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To reveal the influence of complexing agents on crystalline perfection, tristhiourea zinc(II) sulfate (ZTS), ammonium dihydrogen phosphate (ADP) and potassium hydrogen phthalate (KHP) crystals grown by slow-evaporation solution growth technique using low concentrations (5 × 10−3M) of dopants like ethylenediamminetetraacetic acid (EDTA) and 1,10-phenanthroline (phen) were characterized by high-resolution X-ray diffractometry (XRD) and scanning electron microscopy (SEM). High-resolution diffraction curves (DCs) recorded for ZTS and ADP crystals doped with EDTA show that the specimen contains an

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19

Wagner, Nils P., Julian R. Tolchard, Artur Tron, Harald N. Pollen, Heiko Gaertner, and Per E. Vullum. "Improved cyclability of Nickel-rich layered oxides." MRS Advances 5, no. 27-28 (2020): 1433–40. http://dx.doi.org/10.1557/adv.2020.90.

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ABSTRACTThis study compares the physico- and electro- chemical properties of LiNi0.8Mn0.10Co0.1O2 (NMC811) and LiNi0.83Mn0.06Co0.09Al0.1O2 (NMCA) prepared by an oxalic acid co-precipitation. Deposition of a SiO2 surface coating was attempted via reaction of the powder with an amino silane prior to the final heat treatment. It was found that either the presence of small amounts of Al3+, or the compositional gradient resulting from a two step co-precipitation, caused increased crystal growth of the NMCA in comparison to NMC811. This led to improved cyclability in LP40 electrolyte. However, the S

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20

F, Daisy Selasteen, Alfred Cecil Raj S, and Alagappa Moses A. "SYNTHESIS AND CHARACTERIZATION IN VITRO ANTIMICROBIAL AND CYTOTOXICITY TESTING OF OXALIC ACID-DERIVED CADMIUM CHELATING AGENTS." International Journal of Pharmacy and Pharmaceutical Sciences 10, no. 7 (2018): 80. http://dx.doi.org/10.22159/ijpps.2018v10i7.26034.

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Objective: The aim of this study is to investigate the growth, structure, spectral, solubility and biological activity of sodium cadmium oxalate dehydrate (NaCdOx) and cadmium oxalate trihydrate (CdOx) crystals prepared by a single diffusion method in the silica gel medium.Methods: The present crystals were grown using single diffusion methods and tested for XRD, UV absorption (190 to 1100 mm) and solubility (distilled water at 20-29 °C) studies. The antimicrobial efficacy of the grown samples at various concentrations (25, 50, 75 and 100 μg/ml) was studied against Streptococcus, (G+Ve), Pseud

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21

Sahebi, Ramezan. "Comment on: “growth, spectroscopic studies, and third order non-linear optical analysis of an organic dicarboxylic acid based single crystal: urea oxalic acid” [Chin. J. Phys., 56 (2018) 1449–1466]." Chinese Journal of Physics 66 (August 2020): 109–11. http://dx.doi.org/10.1016/j.cjph.2020.05.008.

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22

Zhang, Keyu, Xiaoyan Yang, Jian Wu, Xiaopeng Huang, and Yaochun Yao. "Optimization of the Process Parameters for the Synthesis Process of Battery-Grade Ferrous Oxalate by Response Surface Method." Nano 11, no. 11 (2016): 1650123. http://dx.doi.org/10.1142/s179329201650123x.

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This study investigates the optimal conditions for the synthesis of battery-grade ferrous oxalate as a raw material for preparing cathode material. Ferrous oxalate was prepared by liquid-phase precipitation method using ferrous sulfate and oxalic acid. Central composite design (CCD) was used to determine the effects of three preparation variables on purity and particle size: reaction temperature, aging time and concentration of ferrous sulfate. Based on CCD, the significant factors on each experimental design response identified the analysis of variance (ANOVA). The optimum ferrous oxalate pre

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23

Kostman, Todd A., Nathan M. Tarlyn, and Vincent R. Franceschi. "Research note:Autoradiography utilising labelled ascorbic acid reveals biochemical and morphological details in diverse calcium oxalate crystal-forming species." Functional Plant Biology 34, no. 4 (2007): 339. http://dx.doi.org/10.1071/fp06275.

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Many plant species accumulate calcium oxalate crystals in specialised cells called crystal idioblasts. In one species of crystal-forming plants (Pistia stratiotes L.; forming raphide crystals), it has been shown that ascorbic acid is the primary precursor of oxalic acid. The question remains if this is true of other calcium oxalate crystal-forming plants. One way of answering the above question is by examining ascorbic acid as the oxalic acid precursor in diverse species with a variety of crystal types. In this study we tested ascorbic acid as the primary precursor of oxalic acid in four diffe

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24

Diallo, Waly, Ndongo Gueye, Aurélien Crochet, Laurent Plasseraud, and Hélène Cattey. "Crystal structure of dimethylammonium hydrogen oxalate hemi(oxalic acid)." Acta Crystallographica Section E Crystallographic Communications 71, no. 5 (2015): 473–75. http://dx.doi.org/10.1107/s2056989015005964.

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Single crystals of the title salt, Me2NH2+·HC2O4−·0.5H2C2O4, were isolated as a side product from the reaction involving Me2NH, H2C2O4and Sn(n-Bu)3Cl in a 1:2 ratio in methanol or by the reaction of the (Me2NH2)2C2O4salt and Sn(CH3)3Cl in a 2:1 ratio in ethanol. The asymmetric unit comprises a dimethylammonium cation (Me2NH2+), an hydrogenoxalate anion (HC2O4−), and half a molecule of oxalic acid (H2C2O4) situated about an inversion center. From a supramolecular point of view, the three components interact togetherviahydrogen bonding. The Me2NH2+cations and the HC2O4−anions are in close proxim

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25

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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26

Borodi, Gheorghe, Alexandru Turza, Oana Onija, and Attila Bende. "Succinic, fumaric, adipic and oxalic acid cocrystals of promethazine hydrochloride." Acta Crystallographica Section C Structural Chemistry 75, no. 2 (2019): 107–19. http://dx.doi.org/10.1107/s2053229618017904.

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Novel cocrystals of promethazine hydrochloride [PTZ-Cl; systematic name: N,N-dimethyl-1-(10H-phenothiazin-10-yl)propan-2-aminium chloride] with succinic acid (PTZ-Cl-succinic, C17H21N2S+·Cl−·0.5C4H6O4), fumaric acid (PTZ-Cl-fumaric, C17H21N2S+·Cl−·0.5C4H4O4) and adipic acid (PTZ-Cl-adipic, C17H21N2S+·Cl−·0.5C6H10O4) were prepared by solvent drop grinding and slow evaporation from acetonitrile solution, along with two oxalic acid cocrystals which were prepared in tetrahydrofuran (the oxalic acid hemisolvate, PTZ-Cl-oxalic, C17H21N2S+·Cl−·0.5C2H2O4) and nitromethane (the hydrogen oxalate salt, P

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27

Nobeli, Irene, and Sarah L. Price. "A Non-Empirical Intermolecular Potential for Oxalic Acid Crystal Structures." Journal of Physical Chemistry A 103, no. 32 (1999): 6448–57. http://dx.doi.org/10.1021/jp9910643.

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28

Berná, Antonio, Antonio Rodes, and Juan M. Feliu. "Oxalic acid adsorption and oxidation at platinum single crystal electrodes." Journal of Electroanalytical Chemistry 563, no. 1 (2004): 49–62. http://dx.doi.org/10.1016/j.jelechem.2003.07.043.

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29

Zheng, Wen-Ni. "Oxalic acid–pyridine-4-carbonitrile (1/2)." Acta Crystallographica Section E Structure Reports Online 68, no. 6 (2012): o1625. http://dx.doi.org/10.1107/s1600536812019137.

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In the title compound, 2C6H4N2·C2H2O4, the oxalic acid molecule lies about an inversion center. The pyridine ring of the pyridine-4-carbonitrile molecule is almost planar, the largest deviation from the least-squares plane being 0.006 (1) Å; the nitrile N atom deviates from this plane by 0.114 (1) Å. In the crystal, the oxalic acid molecules and the pyridine-4-carbonitrile molecules form stacks. Neighboring molecules within the stacks are related by translation in the a direction, with interplanar distances of 3.183 (1) and 3.331 (2) Å, respectively. Each oxalic acid molecule forms strong O—H.

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30

Gabrielli, C., L. Beitone, C. Mace, E. Ostermann, and H. Perrot. "Copper Dendrite Growth on a Microcircuit in Oxalic Acid." Journal of The Electrochemical Society 154, no. 5 (2007): H393. http://dx.doi.org/10.1149/1.2713693.

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31

Devos, O., C. Gabrielli, L. Beitone, C. Mace, E. Ostermann, and H. Perrot. "Growth of electrolytic copper dendrites. II: Oxalic acid medium." Journal of Electroanalytical Chemistry 606, no. 2 (2007): 85–94. http://dx.doi.org/10.1016/j.jelechem.2007.05.003.

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32

Chandra, N. R., M. M. Prabu, J. Venkatraman, S. Suresh, and M. Vijayan. "X-ray Studies on Crystalline Complexes Involving Amino Acids and Peptides. XXXIII. Crystal Structures of L- and DL-Arginine Complexed with Oxalic Acid and a Comparative Study of Amino Acid–Oxalic Acid Complexes." Acta Crystallographica Section B Structural Science 54, no. 3 (1998): 257–63. http://dx.doi.org/10.1107/s0108768197011543.

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The DL- and L-arginine complexes of oxalic acid are made up of zwitterionic positively charged amino acid molecules and semi-oxalate ions. The dissimilar molecules aggregate into separate alternating layers in the former. The basic unit in the arginine layer is a centrosymmetric dimer, while the semi-oxalate ions form hydrogen-bonded strings in their layer. In the L-arginine complex each semi-oxalate ion is surrounded by arginine molecules and the complex can be described as an inclusion compound. The oxalic acid complexes of basic amino acids exhibit a variety of ionization states and stoichi

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33

Wenger, Mazal, and Joel Bernstein. "An Alternate Crystal Form of Gabapentin: A Cocrystal with Oxalic Acid." Crystal Growth & Design 8, no. 5 (2008): 1595–98. http://dx.doi.org/10.1021/cg7008732.

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Tanaka, Haruhiko, and Kazuhiro Kawabata. "Thermal dehydration mechanism of oxalic acid dihydrate ii. Single crystal material." Thermochimica Acta 92 (September 1985): 219–22. http://dx.doi.org/10.1016/0040-6031(85)85856-1.

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Voon, C. H., and Mohd Nazree Derman. "Effect of Electrolyte Concentration on the Growth of Porous Anodic Aluminium Oxide (AAO) on Al-Mn Alloys." Advanced Materials Research 626 (December 2012): 610–14. http://dx.doi.org/10.4028/www.scientific.net/amr.626.610.

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In this study, the effect concentration of electrolyte on pore nucleation process during anodizing was investigated. It was found that the concentration of oxalic acid influenced the morphologies and regularities of porous AAO formed on aluminum-manganese substrate. When the concentration of oxalic acid is 0.1 M, the porous AAO exhibited a disordered pores arrangement and no long range order was observed. However, when the concentration was increased to 0.3 M and 0.5 M, hexagonal pores arrangement and long range order were obtained. Although the hexagonal pore arrangement was still retained, f

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36

Liu, Weilong, Gang Xu, Jingwei Bai, and Baoli Duan. "Effects of warming and oxalic acid addition on plant–microbial competition in Picea brachytyla." Canadian Journal of Forest Research 51, no. 3 (2021): 357–64. http://dx.doi.org/10.1139/cjfr-2020-0019.

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The importance of oxalic acid for tree seedling growth and the competition for inorganic nitrogen (N) by plants and soil microorganisms under warming was investigated using 15N tracer techniques in Picea brachytyla (Franch.) E. Pritz. Results showed that warming combined with oxalic acid application induced growth enhancements in seedlings primarily through increases in fine root length and fine root surface area. Moreover, soil NH4 +, NO3 –, PO4 3–, N mineralization, microbial biomass carbon (MBC), and microbial biomass nitrogen (MBN) were significantly higher or tended to be higher with oxal

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37

Jing, Bo, Shengrui Tong, Qifan Liu, et al. "Hygroscopic behavior of multicomponent organic aerosols and their internal mixtures with ammonium sulfate." Atmospheric Chemistry and Physics 16, no. 6 (2016): 4101–18. http://dx.doi.org/10.5194/acp-16-4101-2016.

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Abstract. Water-soluble organic compounds (WSOCs) are important components of organics in the atmospheric fine particulate matter. Although WSOCs play an important role in the hygroscopicity of aerosols, knowledge on the water uptake behavior of internally mixed WSOC aerosols remains limited. Here, the hygroscopic properties of single components such as levoglucosan, oxalic acid, malonic acid, succinic acid, phthalic acid, and multicomponent WSOC aerosols mainly involving oxalic acid are investigated with the hygroscopicity tandem differential mobility analyzer (HTDMA). The coexisting hygrosco

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Jing, B., S. R. Tong, Q. F. Liu, et al. "Hygroscopic behavior of multicomponent organic aerosols and their internal mixtures with ammonium sulfate." Atmospheric Chemistry and Physics Discussions 15, no. 16 (2015): 23357–405. http://dx.doi.org/10.5194/acpd-15-23357-2015.

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Abstract. Water soluble organic compounds (WSOCs) are important components of organics in the atmospheric fine particulate matter. Although WSOCs play an important role in the hygroscopicity of aerosols, water uptake behavior of internally mixed WSOC aerosols remains limited characterization. Here, the hygroscopic properties of single component such as levoglucosan, oxalic acid, malonic acid, succinic acid and phthalic acid and multicomponent WSOC aerosols mainly involving oxalic acid are investigated with the hygroscopicity tandem differential mobility analyzer (HTDMA). The coexisting hygrosc

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39

Arquero, Kristine D., Jing Xu, R. Benny Gerber, and Barbara J. Finlayson-Pitts. "Particle formation and growth from oxalic acid, methanesulfonic acid, trimethylamine and water: a combined experimental and theoretical study." Phys. Chem. Chem. Phys. 19, no. 41 (2017): 28286–301. http://dx.doi.org/10.1039/c7cp04468b.

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40

Dayyih, Wael Abu, Eyad Mallah, Kamal Sweidan, Ahmed Al-Sheikh, and Manfred Steimann. "Crystal structure of 1,3-diisopropyl-4,5-dimethylimidazolium oxalic acid monomethyl ester, C14H24N2O4." Zeitschrift für Kristallographie - New Crystal Structures 228, no. 1 (2013): 55–56. http://dx.doi.org/10.1524/ncrs.2013.0034.

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41

Zhang, Shuo, and Åke C. Rasmuson. "The theophylline–oxalic acid co-crystal system: solid phases, thermodynamics and crystallisation." CrystEngComm 14, no. 14 (2012): 4644. http://dx.doi.org/10.1039/c2ce25299f.

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Cheng, Guo Ling, Xue Bai, and Qun Hui Wang. "Effects of Natural Organic Acids on Growth of Maize and Uptake of Copper and Lead by Maize in Contaminated Soil." Advanced Materials Research 322 (August 2011): 21–24. http://dx.doi.org/10.4028/www.scientific.net/amr.322.21.

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Seven kinds of natural organic acids were added to moderate artiﬁcial contaminated soil to investigate the effects of natural organic acids on growth of maize seedlings and phytoextraction of copper and lead by maize. The results show that the effects of organic acids on plant growth are different in Cu and Pb contaminated soil. The natural organic acids can change the dry matter distribution of the shoot and the root, oxalic acid and tartaric acid can increase the root biomass in different degrees. Oxalic acid and tartaric acid can signiﬁcantly increase the concentrations and uptake of Cu and

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43

Deguire, Suzanne, François Brisse, Jacques Ouellet, and Rodrigue Savoie. "Synthesis, crystal and molecular structure, and vibrational spectra of the complex (COOH)2•2H2O•18-crown-6." Canadian Journal of Chemistry 64, no. 1 (1986): 142–47. http://dx.doi.org/10.1139/v86-025.

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A stoichiometric complex of formula (COOH)2•2H2O•18-crown-6 has been obtained from oxalic acid and the macrocyclic polyether 18-crown-6. The crystals of the complex have a monoclinic unit cell and belong to the P21/c space group. The components in the adduct are linked through hydrogen bonds in a polymer-like fashion: -crown–H2O–HOOCCOOH–OH2–crown–, where the oxalic acid molecules are present in two distinct disordered orientations. The infrared and Raman spectra of the complex are also reported and interpreted.

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Schmidtmann, Marc, Derek S. Middlemiss, and Chick C. Wilson. "Isotopomeric polymorphism in a “doubly-polymorphic” multi-component molecular crystal." CrystEngComm 17, no. 28 (2015): 5273–79. http://dx.doi.org/10.1039/c5ce00123d.

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Isotopomeric polymorphism is observed in complexes of isonicotinamide with oxalic acid, highly unusual here in that each isotopic complex is itself polymorphic, a situation of “double polymorphism”. The four polymorphic forms exhibit different degrees of hydron transfer.

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45

Casati, Nicola, Andrew Jephcoat, Heribert Wilhelm, and Piero Macchi. "Chemical reactivity at high pressure: the ordered polymerization of oxalic acid." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C898. http://dx.doi.org/10.1107/s2053273314091013.

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Pressure is known to trigger unusual chemical reactivity in molecular solids. In particular, small molecules containing unsaturated bonds are subject to oligo- or polymerization, effectively synthesizing new compounds. These are tipically energetic materials which can be amorphous, as in the case of carbon monoxide,[1] or crystalline, as for carbon dioxide phase V.[2] In more complex molecular systems, where unsaturated bonds can be only one of the present moieties, stereo-controlled reactivity can be exploited to synthesize topo-tactic structures. We performed a synchrotron single crystal exp

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46

Malferrari, L., A. Jagminienė, G. P. Veronese, F. Odorici, M. Cuffiani, and A. Jagminas. "Alumina Template-Dependant Growth of Cobalt Nanowire Arrays." Journal of Nanotechnology 2009 (2009): 1–8. http://dx.doi.org/10.1155/2009/149691.

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Different electrochemical regimes and porous alumina were applied for template synthesis of cobalt nanowire (nw) arrays, revealing several peculiar cases. In contrast to quite uniform filling of sulfuric acid alumina templates by alternating current deposition, nonuniform growth of the Conwtufts and mushrooms was obtained for the case of oxalic acid templates. We showed herein for the first time that such configurations arise from the spontaneous growth of cobaltnwgroups evolving from the cobalt balls at the Al/alumina interface. Nevertheless, the uniform growth of densely packed cobaltnwarray

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Yaghtin, Ali, Seyyed Morteza Masoudpanah, Masood Hasheminiasari, et al. "Effect of Reducing Agent on Solution Synthesis of Li3V2(PO4)3 Cathode Material for Lithium Ion Batteries." Molecules 25, no. 16 (2020): 3746. http://dx.doi.org/10.3390/molecules25163746.

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In this study, Li3V2(PO4)3 (LVP) powders are prepared by a solution synthesis method. The effects of two reducing agents on crystal structure and morphology and electrochemical properties are investigated. Preliminary studies on reducing agents such as oxalic acid and citric acid, are used to reduce the vanadium (V) precursor. The oxalic acid-assisted synthesis induces smaller particles (30 nm) compared with the citric acid-assisted synthesis (70 nm). The LVP powders obtained by the oxalic acid exhibit a higher specific capacity (124 mAh g−1 at 1C) and better cycling performance (122 mAh g−1 f

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48

Ma, Y., X. P. Wang, S. F. Zhang, D. C. Shi, and L. X. Sheng. "Effects of salt and alkali stress on growth, accumulation of oxalic acid, and activity of oxalic acid-metabolizing enzymes in Kochia sieversiana." Biologia plantarum 60, no. 4 (2016): 774–82. http://dx.doi.org/10.1007/s10535-016-0650-2.

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49

Wagner, R., O. Möhler, H. Saathoff, M. Schnaiter, and T. Leisner. "New cloud chamber experiments on the heterogeneous ice nucleation ability of oxalic acid in the immersion mode." Atmospheric Chemistry and Physics Discussions 10, no. 12 (2010): 29449–512. http://dx.doi.org/10.5194/acpd-10-29449-2010.

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Abstract. The heterogeneous ice nucleation ability of oxalic acid in the immersion mode has been investigated by controlled expansion cooling runs with airborne, ternary solution droplets composed of, (i), sodium chloride, oxalic acid, and water (NaCl/OA/H2O) and, (ii), sulphuric acid, oxalic acid, and water (H2SO4/OA/H2O). Polydisperse aerosol populations with median diameters ranging from 0.5–0.7 μm and varying solute concentrations were prepared. The expansion experiments were conducted in the AIDA aerosol and cloud chamber of the Karlsruhe Institute of Technology at initial temperatures of

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50

Wagner, R., O. Möhler, H. Saathoff, M. Schnaiter, and T. Leisner. "New cloud chamber experiments on the heterogeneous ice nucleation ability of oxalic acid in the immersion mode." Atmospheric Chemistry and Physics 11, no. 5 (2011): 2083–110. http://dx.doi.org/10.5194/acp-11-2083-2011.

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Abstract. The heterogeneous ice nucleation ability of oxalic acid in the immersion mode has been investigated by controlled expansion cooling runs with airborne, ternary solution droplets composed of, (i), sodium chloride, oxalic acid, and water (NaCl/OA/H2O) and, (ii), sulphuric acid, oxalic acid, and water (H2SO4/OA/H2O). Polydisperse aerosol populations with median diameters ranging from 0.5–0.7 μm and varying solute concentrations were prepared. The expansion experiments were conducted in the AIDA aerosol and cloud chamber of the Karlsruhe Institute of Technology at initial temperatures of

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