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Articoli di riviste sul tema "Cobalt compounds"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Thomas, Nicholas C., Katrina Pringle, and Glen B. Deacon. "Cobalt(II) and cobalt(III) coordination compounds." Journal of Chemical Education 66, no. 6 (1989): 516. http://dx.doi.org/10.1021/ed066p516.

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2

Harwell, David E., Juliet Nabakka, Carolyn B. Knobler, and M. Frederick Hawthorne. "Synthesis and structural characterization of an ether-bridged cobalta-bis(dicarbollide): a model for Venus flytrap cluster reagents." Canadian Journal of Chemistry 73, no. 7 (1995): 1044–49. http://dx.doi.org/10.1139/v95-129.

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The synthesis of bis-(1-carboranylmethyl) ether was first published in 1963; however, its subsequent complexation with a transition metal was never reported. We now report the complexation of cobalt and the corresponding X-ray structure for the triphenylmethylphosphonium salt of the cobalta-bis(carboranylmethyl) ether. The cobalt complex crystallized in the monoclinic space group C2/c with a = 21.729(6) Å, b = 9.845(2) Å, c = 35.565(9) Å, β = 105.363(9)°, V = 7336 Å3, and Z = 8. Data were collected using CuKα radiation, to a maximum 2θ = 115°, giving 4123 unique reflections, and the structure

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3

Ishikawa, T., and E. Matijević. "Formation of uniform particles of cobalt compounds and cobalt." Colloid & Polymer Science 269, no. 2 (1991): 179–86. http://dx.doi.org/10.1007/bf00660309.

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4

Stopford, Woodhall, John Turner, Danielle Cappellini, and Tom Brock. "Bioaccessibility testing of cobalt compounds." Journal of Environmental Monitoring 5, no. 4 (2003): 675. http://dx.doi.org/10.1039/b302257a.

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5

Filipczyk, Grzegorz, Steve W. Lehrich, Alexander Hildebrandt, et al. "Multiferrocenyl Cobalt-Based Sandwich Compounds." European Journal of Inorganic Chemistry 2017, no. 2 (2016): 263–75. http://dx.doi.org/10.1002/ejic.201600848.

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6

Sherali, Eraji, Sirodzhiddin Ikrom Radjabzoda, Tavakal Saidovich Malikov, and Rukhshona Aloviddin Aloviddinzoda. "STUDYING THE CATALYTIC ACTIVITY OF CO (II) COMPOUNDS WITH ACRYLAMIDE IN AQUEOUS SOLUTIONS AND IN THE POLYACRYLAMIDE HYDROGEL PHASE." BULLETIN OF THE TAJIK NATIONAL UNIVERSITY SERIES OF ECONOMIC AND SOCIAL SCIENCES 13, no. 4 (2024): 87–96. https://doi.org/10.62965/tnu.sns.2024.4.8.

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Hydrogels containing complex compounds of cobalt (II, III) were synthesized; the formation of complex compounds of cobalt (II, III) in the hydrogel phase was studied using various physicochemical methods, including IR spectroscopy. The catalytic activity of cobalt (II)-containing hydrogels in the process of sodium sulfide oxidation was studied. In addition, swelling polymer catalysts are sulfur compounds (H2S, etc.) of heavy metal ions, and can also be additives to soils to regulate water and ion exchange, with a prolonged effect.

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7

Sibirkina, Alfira Raviljevna, and Sergej Fedorovich Likhachev. "Comparison of cobalt compounds content in organs and tissues of woody plants." Samara Journal of Science 6, no. 2 (2017): 84–87. http://dx.doi.org/10.17816/snv201762116.

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The paper presents results of a comparative analysis of cobalt compounds content in the organs and tissues of woody plants in pine forests of the Semipalatinsk Irtysh Republic of Kazakhstan. The investigated forests belong to the dry-steppe area of the Irtysh ribbon belt on the sands of the Irtysh and the provinces of the Priirtyshsky belt in the valleys of the ancient runoff. The investigated area of borons is characterized by a simple stand, formed by trees of approximately one height (20-25 m). The fluctuations between the heights of individual trees do not exceed 10-15%. Scots pine ( Pinus

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8

Kowalski, Grzegorz, Jan Pielichowski, and Mirosław Grzesik. "Characteristics of Polyaniline Cobalt Supported Catalysts for Epoxidation Reactions." Scientific World Journal 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/648949.

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A study of polyaniline (PANI) doping with various cobalt compounds, that is, cobalt(II) chloride, cobalt(II) acetate, and cobalt(II) salen, is presented. The catalysts were prepared by depositing cobalt compounds onto the polymer surface. PANI powders containing cobalt ions were obtained by one- or two-step method suspending PANI in the following acetonitrile/acetic acid solution or acetonitrile and then acetic acid solution. Moreover different ratios of Co(II) : PANI were studied. Catalysts obtained with both methods and at all ratios were investigated using various techniques including AAS a

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9

Reutskyy, Viktor, Oleksandr Ivashchuk, Sergiy Mudryy, and Nataliya Mitina. "Cyclohexane Oxidation in the Presence of Cobalt Chelates." Chemistry & Chemical Technology 4, no. 4 (2010): 261–64. http://dx.doi.org/10.23939/chcht04.04.261.

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10

Léonard, A., and R. Lauwerys. "Mutagenicity, carcinogenicity and teratogenicity of cobalt metal and cobalt compounds." Mutation Research/Reviews in Genetic Toxicology 239, no. 1 (1990): 17–27. http://dx.doi.org/10.1016/0165-1110(90)90029-b.

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11

Olazabal, Claudia A., Francois P. Gabbai, Alan H. Cowley, Carl J. Carrano, Ladd M. Mokry, and Marcus R. Bond. "Intramolecular Base Stabilization of Cobalt-Gallium and Cobalt-Indium Compounds." Organometallics 13, no. 2 (1994): 421–23. http://dx.doi.org/10.1021/om00014a008.

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12

Dembinski, Roman, Renata Kaczmarek, Dariusz Korczyński, and Karolina Królewska-Golińska. "Organometallic Nucleosides: Synthesis and Biological Evaluation of Substituted Dicobalt Hexacarbonyl Alkynyl Modified 2′-Deoxyuridines." Proceedings 22, no. 1 (2019): 62. http://dx.doi.org/10.3390/proceedings2019022062.

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In continuation of synthetic pursuit of metallo-nucleosides, in particular dicobalt hexacarbonyl 5-alkynyl-2′-deoxyuridines, novel compounds with alkynyl groups were synthesized, starting from 5-iodo-2′-deoxyuridine. Reactions of dicobalt octacarbonyl [Co2(CO)8] with 2′-deoxy-5-oxopropynyluridines and related compounds gave dicobalt hexacarbonyl nucleoside complexes (83–31%). The growth inhibition of HeLa and K562 cancer cell lines by organometallic nucleosides was examined and compared to that by alkynyl nucleoside precursors. Coordination of the dicobalt carbonyl moiety to the 2′-deoxy-5-alk

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13

Huang, Zheng, Ziqing Zuo, Huanan Wen, and Guixia Liu. "Cobalt-Catalyzed Hydroboration and Borylation of Alkenes and Alkynes." Synlett 29, no. 11 (2018): 1421–29. http://dx.doi.org/10.1055/s-0037-1609682.

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Incorporation of the boryl moiety across a carbon–carbon multiple bond is a powerful method for the synthesis of organoboron compounds. This kind of transformation could be realized with high chemo-, regio-, and stereoselectivity by using an appropriate transition-metal catalyst. This account summarizes the latest advances from our group in the area of cobalt-catalyzed hydroboration and borylation of alkenes and alkynes, which lead to the formation of a variety of organoboron compounds, including alkylboronates, 1,1,1-tris(boronates), 1,1-diborylalkenes, and 1,1-diboronates.1 Introduction2 Cob

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14

Gegeshidze, Nana, Nino Kilasonia, and Maia Tsintsadze. "Synthesis and Spectroscopic (IR) Studies of Complex Compounds of Some 3D Metals with N,N-dimethylformamide." Works of Georgian Technical University, no. 2(528) (May 29, 2023): 18–26. http://dx.doi.org/10.36073/1512-0996-2023-2-18-26.

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Complex compounds of sulphates and chlorides of cobalt (II), nickel (II), copper (II), manganese (II), cadmium (II) and zinc with N, N-dimethylformamide, as well as mixed acidoligand complex compounds of cobalt (II), nickel (II), manganese (II) and copper (II) with N,N-dimethylformamide were synthesized. In order to study the rules of coordination of N,Ndimethylformamide and thiocyanate groups, IR spectra of synthesized complex compounds were studied. Based on the study of IR spectra, it was found that in all synthesized complex compounds, the coordination of the N,Ndimethylformamide molecule

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15

Tang, Yao, Zhao Lin Zhan, Xiao Hua Yu, Miao Ma, and Xiao Yu Li. "Development and Application of Manganese Cobalt Lithium Compounds in the Field of Lithium Batteries." Advanced Materials Research 1088 (February 2015): 275–78. http://dx.doi.org/10.4028/www.scientific.net/amr.1088.275.

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Manganese lithium cobalt compounds have been used in the preparation of lithium battery cathode material because of its excellent electrochemical characteristics and gradually in recent years. This paper introduces the different methods of preparing the compounds, analyzes the structural characteristics of the manganese cobalt lithium compounds and the differences in the electrochemical properties, the end of the article has carried on the forecast to the future development direction of the compound.

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16

Nikanov, Alexander N., Valery P. Chashchin, Ekaterina V. Ulanovskaya, et al. "Characteristics of the air environment of the production premises of the cobalt salts extraction unit." Hygiene and sanitation 102, no. 8 (2023): 806–10. http://dx.doi.org/10.47470/0016-9900-2023-102-8-806-810.

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Introduction. The introduction of new and modern methods of extracting metals from mineral ores in the metallurgical industry should be accompanied by an expert hygienic assessment of working conditions.  Materials and methods. The research was carried out at one of the metallurgical enterprises of the Murmansk region, which processes sulfide copper-nickel ores, produces electrolyte nickel, copper, cobalt, cobalt concentrate and precious metal concentrates. The characteristics of the air environment in the cobalt salt extraction department were carried out at the workplaces of hydrometal

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17

Danzeisen, Ruth, David Lee Williams, Vanessa Viegas, Michael Dourson, Steven Verberckmoes, and Arne Burzlaff. "Bioelution, Bioavailability, and Toxicity of Cobalt Compounds Correlate." Toxicological Sciences 174, no. 2 (2020): 311–25. http://dx.doi.org/10.1093/toxsci/kfz249.

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Abstract Based on the wide use of cobalt substances in a range of important technologies, it has become important to predict the toxicological properties of new or lesser-studied substances as accurately as possible. We studied a group of 6 cobalt substances with inorganic ligands, which were tested for their bioaccessibility (surrogate measure of bioavailability) through in vitro bioelution in simulated gastric and intestinal fluids. Representatives of the group also underwent in vivo blood kinetics and mass balance tests, and both oral acute and repeated dose toxicity (RDT) testing. We were

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18

Dumonteil, Geoffrey, and Sabine Berteina-Raboin. "Synthesis of Conjugated Dienes in Natural Compounds." Catalysts 12, no. 1 (2022): 86. http://dx.doi.org/10.3390/catal12010086.

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This review describes the various synthetic methods commonly used to obtain molecules possessing conjugated dienes. We focus on methods involving cross-coupling reactions using various metals such as nickel, palladium, ruthenium, cobalt, cobalt/zinc, manganese, zirconium, or iron, mainly through examples that aimed to access natural molecules or their analogues. Among the natural molecules covered in this review, we discuss the total synthesis of a phytohormone, Acid Abscisic (ABA), carried out by our team involving the development of a conjugated diene chain.

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19

Andreiev, V. "Solidago canadensis L. — potential bioremeditor of contaminated soil." Karantin i zahist roslin, no. 2-3 (March 19, 2020): 24–28. http://dx.doi.org/10.36495/2312-0614.2020.2-3.24-28.

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Goal. To determine the patterns of contamination adjacent to the motor road Kyiv — Odesa territories of the soil and the specificity of uptake by wild plants (zolotarnica canadian Solidagoсanadensis L.) pollutants. Methods. Field and laboratory studies. Results. The products of combustion of car engines moving along the freeway, there are a variety of chemical compounds, including metals — lead (Pb), chromium (Cr), cobalt (Co), and others. In soil samples taken at a distance of 5 m from the motorway, the presence of lead compounds was 11.401 mg/ kg, chromium — 19.361 mg/kg. At a di

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20

Gluhcheva, Yordanka, Vasil Atanasov, Juliana Ivanova, and Ekaterina Pavlova. "Chronic exposure to cobalt compounds — an in vivo study." Open Life Sciences 9, no. 10 (2014): 973–81. http://dx.doi.org/10.2478/s11535-014-0334-x.

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AbstractAn in vivo experimental model for testing the effects of long-term chronic treatment with cobalt(II) compounds — cobalt chloride (CoCl2) and cobalt-EDTA (Co-EDTA) on mice at different stages of development was optimized. Pregnant mice and their progeny were treated with daily doses of 75 or 125 mg kg−1 body weight until postnatal day 90. The compounds were dissolved in regular tap water. Mice were sacrificed on days 18, 25, 30, 45, 60 and 90 after birth, which correspond to different stages of their development. Altered organ weight indices (calculated as a ratio of organ weight to bod

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21

Jiang, Feng, Maxime A. Siegler, Xiaobo Sun, Lin Jiang, Célia Fonseca Guerra, and Elisabeth Bouwman. "Redox Interconversion between Cobalt(III) Thiolate and Cobalt(II) Disulfide Compounds." Inorganic Chemistry 57, no. 15 (2018): 8796–805. http://dx.doi.org/10.1021/acs.inorgchem.8b00549.

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22

Reinig, Regina R., Ellie L. Fought, Arkady Ellern, Theresa L. Windus, and Aaron D. Sadow. "Cobalt(ii) acyl intermediates in carbon–carbon bond formation and oxygenation." Dalton Transactions 47, no. 35 (2018): 12147–61. http://dx.doi.org/10.1039/c8dt02661k.

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23

Elsayed Moussa, Mehdi, Susanne Bauer, Christian Graßl, Christoph Riesinger, Gábor Balázs, and Manfred Scheer. "Synthesis and Characterization of Novel Cobalt Carbonyl Phosphorus and Arsenic Clusters." Molecules 29, no. 9 (2024): 2025. http://dx.doi.org/10.3390/molecules29092025.

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Phosphorus- and arsenic-containing cobalt clusters are an interesting class of compounds that continue to provide new structures with captivating bonding patterns. Although the first members of this family were reported 45 years ago, the number of such species is still limited within the broad family of transition metal complexes bearing pnictogen atoms. Herein, we present the reaction of Co2(CO)8 as a cobalt source with a number of phosphorus- and arsenic-containing compounds under variable reaction conditions. These reactions result in various known and novel cobalt phosphorus and cobalt ars

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24

Wu, Caizhi, and Shaozhong Ge. "Ligand-controlled cobalt-catalyzed regiodivergent hydroboration of aryl,alkyl-disubstituted internal allenes." Chemical Science 11, no. 10 (2020): 2783–89. http://dx.doi.org/10.1039/c9sc06136c.

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The first cobalt-catalyzed stereoselective regiodivergent hydroboration of internal allenes to access synthetically versatile (Z)-alkenylboronate compounds was effectively achieved with two cobalt catalysts through ligand control.

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25

Ruswanto, Ruswanto, Richa Mardianingrum, Tita Nofianti, Anindita Tri Kusuma Pratita, Fahmi Muhamad Naser, and Siswandono Siswandono. "Design and computational study of the thiourea–cobalt(III) complex as an anticancer candidate." Journal of Pharmacy & Pharmacognosy Research 11, no. 3 (2023): 499–516. http://dx.doi.org/10.56499/jppres23.1622_11.3.499.

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Context: Cancer is a disease characterized by the formation of abnormal cells and uncontrollably. Over the past three decades, cobalt complexes' anticancer potential has been thoroughly investigated, and a lot of time has been spent figuring out how they work. In another study, the 1-Benzoyl-3-methylthiourea is one of the thiourea derivatives that have anticancer activity. The Modification of thiourea into a thiourea–cobalt(III) complex was carried out to increase the anticancer activity. Aims: To obtain a thiourea-cobalt(III) derivative compound that can be used as an anticancer breast candid

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Munteanu, Catherine R., and Kogularamanan Suntharalingam. "Advances in cobalt complexes as anticancer agents." Dalton Transactions 44, no. 31 (2015): 13796–808. http://dx.doi.org/10.1039/c5dt02101d.

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This perspective describes the advances in cobalt-containing compounds as anticancer agents. Cobalt, being an essential trace element, offers a less toxic alternative to traditional platinum-based anticancer drugs.

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Ávila-Torres, Yenny, Lázaro Huerta, and Noráh Barba-Behrens. "XPS-Characterization of Heterometallic Coordination Compounds with Optically Active Ligands." Journal of Chemistry 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/370637.

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The heterometallic optical complexes [Cu2Co(S,S(+)cpse)3(H2O)3]·4H2O (1) and [Cu2Ni(S,S(+)cpse)3(H2O)3]·10H2O (2) were obtained from the mononuclear copper(II) compound by the addition of nickel(II) or cobalt(II) chlorides, where (H2cpse) is the acetyl amino alcohol derivative N-[2-hydroxy-1(R)-methyl-2(R)-phenylethyl]-N-methylglycine. In comparison with the homotrinuclear copper(II) compound [Cu3(S,S(+)cpse)3(H2O)3]·8H2O reported previously, the substitution of a copper(II) atom by one cobalt(II) ion gave place to a heterotrinuclear compound1, which presents ferromagnetic-antiferromagnetic be

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Boeckmann, Jan, Björn Reimer, and Christian Näther. "Synthesis, Crystal Structures, and Spectroscopic and Thermal Properties of New Cobalt Thiocyanato Coordination Compounds Based on 3-Methylpyridine as a Neutral Coligand." Zeitschrift für Naturforschung B 66, no. 8 (2011): 819–27. http://dx.doi.org/10.1515/znb-2011-0806.

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Reaction of cobalt(II) thiocyanate with 3-methylpyridine in water leads to the formation of the new ligand-rich cobalt(II) thiocyanato coordination compounds [bis(thiocyanato-N)-tetrakis(3-methylpyridine- N)cobalt(II)] (1) and [bis(thiocyanato-N)-bis(3-methylpyridine-N)-diaqua-cobalt(II)] (2). The crystal structures of 1 and 2 consist of discrete complexes in which the cobalt(II) cations are coordinated by two terminally N-bonded thiocyanato anions and four or two terminally bonded coligands, respectively, in a slightly distorted octahedral geometry. Investigations on the thermal degradation b

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Eliseeva, E. A., S. L. Berezina, I. G. Gorichev, L. E. Slynko, and V. N. Goryacheva. "The Initial Surface Structure of Co3O4 as a Factor of Influence on Kinetic Features of the Dissolution of the Solid Phase." Herald of the Bauman Moscow State Technical University. Series Natural Sciences, no. 4 (91) (August 2020): 138–44. http://dx.doi.org/10.18698/1812-3368-2020-4-138-144.

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Due to the depletion of natural reserves of cobalt-containing ores, it is urgent to optimize the processes of cobalt replenishment, based on the leaching of its compounds, processing of industrial waste, regeneration of cobalt compounds from catalysts. The kinetic characteristics of the dissolution of metal oxides are influenced by the initial state of their surface structure, which requires the accumulation of experimental material and individual targeted studies. The paper presents the results of an experimental study of the surface structure of industrial Co3O4 cobalt oxide samples. The stu

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Alberto Scarselli, Davide Di Marzio, and Sergio Iavicoli. "Assessment of exposure to cobalt and its compounds in Italian industrial settings: Occupational exposure to cobalt." La Medicina del Lavoro 111, no. 1 (2020): 22–31. https://doi.org/10.23749/mdl.v111i1.8869.

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Background: Adverse health effects of occupational exposure to cobalt and its compounds are well-documented. Objectives: The aim of the study is to evaluate exposures to cobalt in Italian industrial settings. Methods: Data on cobalt and its compounds were collected from an occupational exposure registry. Statistical analysis was carried out for some exposure-related variables (i.e., cobalt compound, activity sector, occupational group, firm size). The number of workers potentially exposed was estimated for selected industrial sectors. Results: Overall 1,701 measurements were analyzed in the pe

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Dzidziguri, E. L., E. N. Sidorova, and E. V. Zaharova. "Mechanism of formation of nanoparticles during reduction of oxygen-containing cobalt (II) compounds by hydrogen." Physics and Chemistry of Materials Treatment 1 (2023): 75–83. http://dx.doi.org/10.30791/0015-3214-2023-1-75-83.

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This paper is devoted to determining the mechanism of reduction of oxygen-containing cobalt compounds obtained by chemical dispersion. Cobalt nanopowders obtained by precipitation of cobalt hydroxide from a solution of salts with alkali and subsequent reduction with hydrogen were used as the object of research. The paper presents the results of thermogravimetric and X-ray phase analysis, the morphology and dispersion of the obtained particles are investigated, the magnetic properties are measured. A mechanism for the reduction of cobalt nanopowder is proposed.

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Sapaev, B., F. E. Saitkulov, A. Khalikov, and A. S. Ganiev. "The biochemical effects of the coordination compound of cobalt-ii nitrate quinazolin-4-one with 3-indolyl acetic acid in the “amber” plants grades phaseolus aureus." E3S Web of Conferences 452 (2023): 01042. http://dx.doi.org/10.1051/e3sconf/202345201042.

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The biochemical effects of the coordination compound of cobalt-II nitrate quinazolin-4-one with 3-indolyl acetic acid in the “amber” plants grades Phaseolus aureus have been studied. Cobalt is an important trace element for plants and an important biogenic element in the soil, mainly in the form of the Co2+ cation, which participates in redox reactions in plant organisms for the implementation of various mineral and organic compounds. Cobalt compounds are mainly soluble in mineral acids, so we want to show that the coordination compound containing this trace element, formed by the nitrate salt

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Geue, RJ, WR Petri, AM Sargeson, and MR Snow. "Metal Ion Cages: Capping Reactions With Bifunctional Methylene Compounds and Formaldehyde." Australian Journal of Chemistry 45, no. 10 (1992): 1681. http://dx.doi.org/10.1071/ch9921681.

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[(1,1,1-Tris(4-amino-2-azabutyl)ethane)cobalt(III)](3+) ([co(sen)]3+) and [(tris(4-amino-2- azabutyl)amine)cobalt(III)](3+) ([Co(azasen)]3+) react with formaldehyde and diethyl malonate or cyanoacetic acid ethyl ester in the presence of base to form macrobicyclic cages [ox- osarcophagine (oxosar) and oxoazasarcophagine (azaoxosar)] about the metal ion. The cage structure of the complexes has been established by an X-ray crystallographic analysis of [(1-carboxy-8-methyl-2-oxo-3,6,10,13, 16,19-hexaazabicyclo[6.6.6]icosanato)cobalt(III)] diperchlorate [Co(Me,CO2H-oxosar- H)]2+ which crystallizes

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Ivanenko, Olexandr, Anatoliy Omel’chuk, Tamara Pavlenko, Yuliia Pohorenko, and Valerii Bikov. "INFLUENCE OF CONDITIONS OF SYNTHESIS OF COBALT AND MANGANESE OXIDES ON THEIR ABILITY TO CATALYTIC DECOMPOSITION OF HYDROGEN PEROXIDE." Ukrainian Chemistry Journal 86, no. 8 (2020): 111–25. http://dx.doi.org/10.33609/2708-129x.86.8.2020.111-125.

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Cobalt and manganese oxides and their complex oxide compositions were obtained by the sol-gel method using various precipitators(ammonia solution and HMTA). It was determined by X-ray diffraction method that both individual and co-precipitated hydroxo compounds after calcination at 400 °С form oxide phases of Co3O4 and Mn3O4 composition. Samples obtained by sedimentation with ammonia solution have a larger specific surface area than synthesized in HMTA solution. When calcined at 400 °C, the specific surface area for cobalt-containing samples sedimentated with ammonia solution decreases, and fo

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MATHEW, TESSYMOL, and SUNNY KURIAKOSE. "Cobalt(II) Porphyrins Supported on Crosslinked Polymer Matrix as Model Compounds." Journal of Porphyrins and Phthalocyanines 03, no. 04 (1999): 316–21. http://dx.doi.org/10.1002/(sici)1099-1409(199904)3:4<316::aid-jpp136>3.0.co;2-z.

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Polymer-bound cobalt(II) porphyrins were studied for their dioxygen—binding capacity. Tetra—aminoporphyrins were anchored on a divinylbenzene (DVB)-crosslinked chloromethyl polystyrene network. The crosslinked, solid polymers were swelled in chloroform and the swollen polymers were used for the entire studies. Ortho-, meta- and para-substituted porphyrin systems were developed by adjusting the bonding position with the help of suitably substituted aminoporphyrins. The products were characterized by chemical and spectroscopic methods. Cobalt(II) complexes of polymeric porphyrins were synthesize

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Hayami, Shinya, Manabu Nakaya, Hitomi Ohmagari, et al. "Spin-crossover behaviors in solvated cobalt(ii) compounds." Dalton Transactions 44, no. 20 (2015): 9345–48. http://dx.doi.org/10.1039/c4dt03743j.

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Suresh, Selvaraj, Astakala Anil Kumar, Shubham Avinash Deshmukh, S. Ravichandran, Shaik Rafi, and P. Hanuman Prasad. "3D Flower-like Composites in Energy Storage and Photocatalytic Applications: A Review." Asian Journal of Chemistry 36, no. 2 (2024): 281–93. http://dx.doi.org/10.14233/ajchem.2024.28410.

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This extant review looks at the energy storage and photocatalytic degradation efficiency of various three-dimensional flower-like composites. Cobalt/nickel composites with porous structure and high surface area were efficient in energy storage applications. Graphene in 3D flower-like compounds with cobalt/nickel compounds improves the electrochemical performance. Photocatalytic degradation of bismuth compounds/silver compounds containing 3D flower-like composites was effective. 3D Flower-like graphene composites have excellent energy storage and photocatalytic properties. This review will gene

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38

Bedi, S. C., and M. Forker. "Hyperfine interactions at Ta impurities in cobalt and cobalt-hafnium intermetallic compounds." Physical Review B 47, no. 22 (1993): 14948–60. http://dx.doi.org/10.1103/physrevb.47.14948.

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Balasubramanian, Balamurugan, Xin Zhao, Shah R. Valloppilly, et al. "Magnetism of new metastable cobalt-nitride compounds." Nanoscale 10, no. 27 (2018): 13011–21. http://dx.doi.org/10.1039/c8nr02105h.

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40

Umehara, I., T. Kuwai, J. Sakurai, K. Maezawa, Q. F. Lu, and K. Sato. "Thermopower of rare earth-cobalt compounds R3Co." Physica B: Condensed Matter 206-207 (February 1995): 405–7. http://dx.doi.org/10.1016/0921-4526(94)00473-9.

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41

Burzo, E. "Spin fluctuations in cobalt rare-earth compounds." Journal of Magnetism and Magnetic Materials 140-144 (February 1995): 2013–14. http://dx.doi.org/10.1016/0304-8853(94)01448-5.

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42

Burkin, A. R. "Nickel and cobalt extraction using organic compounds." Endeavour 10, no. 4 (1986): 215–16. http://dx.doi.org/10.1016/0160-9327(86)90111-0.

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43

Li, Qin, Qingdong Ke, and Max Costa. "Alterations of histone modifications by cobalt compounds." Carcinogenesis 30, no. 7 (2009): 1243–51. http://dx.doi.org/10.1093/carcin/bgp088.

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44

Varbanets, L. D. "THE COORDINATION COMPOUNDS OF COBALT (II, III)." Biotechnologia Acta 6, no. 1 (2013): 73–80. http://dx.doi.org/10.15407/biotech6.01.073.

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45

Miura, Masahiro, Masato Shinohara, and Masakatsu Nomura. "Cobalt-catalyzed reduction of aromatic nitro compounds." Journal of Molecular Catalysis 45, no. 2 (1988): 151–53. http://dx.doi.org/10.1016/0304-5102(88)80002-6.

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46

Coles, B. R., and A. K. Chhabra. "Conditions for ferromagnetism in cobalt intermetallic compounds." Journal of Magnetism and Magnetic Materials 54-57 (February 1986): 1039–40. http://dx.doi.org/10.1016/0304-8853(86)90371-9.

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47

Hughes, M. A. "Nickel and cobalt extraction using organic compounds." Hydrometallurgy 16, no. 1 (1986): 120. http://dx.doi.org/10.1016/0304-386x(86)90059-9.

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48

Liu, Shuya, Xing Fang, Songlin Chen, Zhenli Wang, and Jing Guo. "Preparation and application of cobalt-based compounds." Journal of Physics: Conference Series 3018, no. 1 (2025): 012007. https://doi.org/10.1088/1742-6596/3018/1/012007.

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Abstract (sommario):

Abstract Hydrogen is considered a promising renewable energy source due to its abundance, releases high heat, clean, and renewable. Water splitting is used as a strategy engineering for hydrogen production. The development of efficient electrocatalysts to reduce the overpotential of water splitting is the key to improving energy efficiency and hydrogen production rate. This study focuses on the reaction mechanism of water splitting, sticks to the essential structure-activity relationship, and emphasizes the design and optimization of electrocatalytic performance at the atomic scale. The relate

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49

Saitkulov, Foziljon Ergashevich Begimqulov Inomjon Bahrom o'g'li Oʻralova Nodira Abdulaziz qizi Gulimmatova Ruhsora Axmadjon qizi Rahmonqulova Dilfuza Asrorjon qizi. "BIOCHEMICAL EFFECTS OF THE COORDINATION COMPOUND OF COBALT-II NITRATE QUINAZOLIN-4-ONE WITH 3-INDOLYL ACETIC ACID IN THE "AMBER" PLANTS GRADES PHASEOLUS AUREUS." ACADEMIC RESEARCH IN MODERN SCIENCE 1, no. 17 (2022): 263–67. https://doi.org/10.5281/zenodo.7332745.

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Abstract (sommario):

The biochemical effects of the coordination compound of cobalt-II nitrate quinazolin-4-one with 3-indolyl acetic acid in the “amber” plants grades Phaseolus aureus have been studied. Cobalt is an important trace element for plants and an important biogenic element in the soil, mainly in the form of the Co<sup>2+ </sup>cation, which participates in redox reactions in plant organisms for the implementation of various mineral and organic compounds. Cobalt compounds are mainly soluble in mineral acids, so we want to show that the coordination compound containing this trace element, for

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50

Markiv, V. S., та N. O. Vovcek. "КОБАЛЬТ У ВОДНИХ ЕКОСИСТЕМАХ: ФОРМИ ЗНАХОДЖЕННЯ, БІОЛОГІЧНЕ ЗНАЧЕННЯ ТА ТОКСИЧНІСТЬ ДЛЯ РИБ". Scientific Issue Ternopil Volodymyr Hnatiuk National Pedagogical University. Series: Biology 84, № 2 (2024): 58–73. http://dx.doi.org/10.25128/2078-2357.24.2.7.

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Abstract (sommario):

The review outlines the sources of cobalt and its compounds entering the environment, analyzes the forms of the metal in aquatic ecosystems, and discusses methods of ecoanalytical control, along with the peculiarities of cobalt metabolism and its toxicity for aquatic organisms (hydrobionts). Cobalt, a transition metal and rare natural element, exhibits varying concentrations in freshwater ecosystems. Its levels range from very low (ng/L to μg/L) in unpolluted, anthropogenically unaffected water bodies, to significantly higher concentrations (above 3 mg/L) in contaminated areas. It was noted th

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