Pub Date : 2023-01-01DOI: 10.32737/2221-8688-2023-2-99-122
V. Majidzade, S. Jafarova, S. Javadova, A. Aliyev, D. B. Tagiyev
Sb2S3 is stable under environmental conditions and a promising semiconductor material for optoelectronic applications, its potential capabilities in solar cells, photodetectors, and other devices are being investigated. It has an indirect-band gap of approximately 1.7-1.9 eV depending on the crystal structure which makes it suitable for absorption of visible light and its use in solar batteries. Sb2S3 can exist in different crystal structures including orthorhombic and hexagonal structures. The crystal structure can significantly affect the electronic and optical properties, which makes it possible to adapt its properties for specific applications using crystal structure engineering. It also has great optical properties and high absorption coefficients in the visible and near-infrared regions of the spectrum and makes it suitable for use in photogalvanics and photodetectors. Although there are various methods for obtaining this material, further research and development are needed to optimize its properties, improve productivity, and explore new applications.
{"title":"THE LATEST PROGRESS ON SYNTHESIS AND INVESTIGATION OF Sb2S3-BASED THIN FILMS","authors":"V. Majidzade, S. Jafarova, S. Javadova, A. Aliyev, D. B. Tagiyev","doi":"10.32737/2221-8688-2023-2-99-122","DOIUrl":"https://doi.org/10.32737/2221-8688-2023-2-99-122","url":null,"abstract":"Sb2S3 is stable under environmental conditions and a promising semiconductor material for optoelectronic applications, its potential capabilities in solar cells, photodetectors, and other devices are being investigated. It has an indirect-band gap of approximately 1.7-1.9 eV depending on the crystal structure which makes it suitable for absorption of visible light and its use in solar batteries. Sb2S3 can exist in different crystal structures including orthorhombic and hexagonal structures. The crystal structure can significantly affect the electronic and optical properties, which makes it possible to adapt its properties for specific applications using crystal structure engineering. It also has great optical properties and high absorption coefficients in the visible and near-infrared regions of the spectrum and makes it suitable for use in photogalvanics and photodetectors. Although there are various methods for obtaining this material, further research and development are needed to optimize its properties, improve productivity, and explore new applications.","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"313 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72976381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.32737/2221-8688-2023-2-188-196
S. Paul, B. Chakraborty, K. Deb, Sudip Choudhury
Self-assembled nanoparticles are an area of great research prospect as they offer switchable element for designing and creating micro-scale constructs. Self-assembly of nano-hybrids through some noncovalent interactions such as electrostatic, π-π and van der Waal interactions in different classes of composite materials provide a great prospect of utilization of these functional properties in tailor-made device applications. In this work gold nanoparticle functionalized with coumarin based fused-ring heterocyclic thiol exhibiting self-assembly is reported. The present work has been designed giving prior to pi-stacking mediated self-aggregation of nanoparticles resulting formation of larger superstructures. The work reports the coumarin-based heterocyclic fused ring having a thiol anchoring group grafted to the gold nanoparticle surface for easier electron flow between the metal nanoparticle and the aromatic ligand and study their self-assembly nature.
{"title":"FUSED RING HETEROCYCLE FUNCTIONALIZED GOLD NANOPARTICLES: SYNTHESIS AND SELF-ASSEMBLY","authors":"S. Paul, B. Chakraborty, K. Deb, Sudip Choudhury","doi":"10.32737/2221-8688-2023-2-188-196","DOIUrl":"https://doi.org/10.32737/2221-8688-2023-2-188-196","url":null,"abstract":"Self-assembled nanoparticles are an area of great research prospect as they offer switchable element for designing and creating micro-scale constructs. Self-assembly of nano-hybrids through some noncovalent interactions such as electrostatic, π-π and van der Waal interactions in different classes of composite materials provide a great prospect of utilization of these functional properties in tailor-made device applications. In this work gold nanoparticle functionalized with coumarin based fused-ring heterocyclic thiol exhibiting self-assembly is reported. The present work has been designed giving prior to pi-stacking mediated self-aggregation of nanoparticles resulting formation of larger superstructures. The work reports the coumarin-based heterocyclic fused ring having a thiol anchoring group grafted to the gold nanoparticle surface for easier electron flow between the metal nanoparticle and the aromatic ligand and study their self-assembly nature.","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80313113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.32737/2221-8688-2023-1-72-77
F.Kh. Yusifli, N. Aliyeva, G. Ramazanov
By free radical addition of ethanedithiol to alkyl- and cycloalkyl-substituted methylene dioxolanes, the bis-adducts tested then as a plasticizer for PVC have been obtained. It has been established as a result of the carried out investigations that the introduction of the synthesized compounds into PVC composition improves the physical-mechanical properties, which has been connected with the availability of sulfur atoms, carbonyl groups and ether bond in the molecules of bis-adducts. The high operational indices from PVCplastics indicate good plasticizing properties of the synthesized bis-adducts, and therefore they can be recommended for practical use.
{"title":"USE OF BIS-ADDUCTS OF ETHANEDITHIOL WITH ALKYL- AND CYCLOALKYL SUBSTITUTED METHYLENE DIOXOLANES IN THE COMPOSITION OF POLYVINYL CHLORIDE","authors":"F.Kh. Yusifli, N. Aliyeva, G. Ramazanov","doi":"10.32737/2221-8688-2023-1-72-77","DOIUrl":"https://doi.org/10.32737/2221-8688-2023-1-72-77","url":null,"abstract":"By free radical addition of ethanedithiol to alkyl- and cycloalkyl-substituted methylene dioxolanes, the bis-adducts tested then as a plasticizer for PVC have been obtained. It has been established as a result of the carried out investigations that the introduction of the synthesized compounds into PVC composition improves the physical-mechanical properties, which has been connected with the availability of sulfur atoms, carbonyl groups and ether bond in the molecules of bis-adducts. The high operational indices from PVCplastics indicate good plasticizing properties of the synthesized bis-adducts, and therefore they can be recommended for practical use.","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"217 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89104398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.32737/2221-8688-2023-2-132-139
F.R. Aliyev, E. Orujlu, D. Babanly, A.L. Mustafayeva
The phase equilibria of the Sb2Te2S-Bi2Te2S system was studied by powder X-ray diffraction (PXRD), differential thermal analysis (DTA), scanning electron microscope (SEM) and energy dispersive Xray (EDX) microanalysis. It was shown that due to incongruent melting of the Sb2Te2S compound the system is non-quasibinary, but it is stable below the solidus and characterized by the formation of a continuous series of solid solutions with a tetradymite-like hexagonal structure. The lattice parameters were determined from powder diffraction patterns. It was established that the crystal lattice parameters of solid solutions vary linearly with composition
{"title":"PHASE RELATIONS IN THE Sb2Te2S-Bi2Te2S SYSTEM AND CHARACTERIZATION OF Sb2-xBixTe2S SOLID SOLUTIONS","authors":"F.R. Aliyev, E. Orujlu, D. Babanly, A.L. Mustafayeva","doi":"10.32737/2221-8688-2023-2-132-139","DOIUrl":"https://doi.org/10.32737/2221-8688-2023-2-132-139","url":null,"abstract":"The phase equilibria of the Sb2Te2S-Bi2Te2S system was studied by powder X-ray diffraction (PXRD), differential thermal analysis (DTA), scanning electron microscope (SEM) and energy dispersive Xray (EDX) microanalysis. It was shown that due to incongruent melting of the Sb2Te2S compound the system is non-quasibinary, but it is stable below the solidus and characterized by the formation of a continuous series of solid solutions with a tetradymite-like hexagonal structure. The lattice parameters were determined from powder diffraction patterns. It was established that the crystal lattice parameters of solid solutions vary linearly with composition","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90777014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.32737/2221-8688-2023-1-29-40
A. Kobets, I.A. Audzeychyk, T. N. Vorobyova, U.P. Novikov
The method is proposed to protect the carbon steel from corrosion by silicate coatings filled with powdered zinc and graphene nanoplates obtained by thermal splitting of graphite. The conditions for steel pre-treatment in an alkaline solution containing citrate ions and a nonionic surfactant, for the production of potassium liquid glass composition with the addition of zinc and graphene powders are selected. It is shown that coatings 70–80 µm thick, cured at room temperature for three days and containing 80–90 wt. % zinc, 7– 12 wt. % silicon dioxide and 0.2 wt. % carbon have the highest adhesion, water resistance and protective ability. The study of steel corrosion in 3.5% NaCl solution using methods of voltammetry and the dependence of open circuit potential on the test duration showed that silicate coatings filled with zinc and graphene provide cathodic polarization of steel and protect it from corrosion better than twice as thick coatings obtained by hot galvanizing. Graphene nanoplates enhance the contact of zinc particles with each other and with steel, promoting its cathodic polarization. Using scanning electron microscopy and X-ray spectral microanalysis, it has been shown that zinc corrosion products fill the pores of the near-surface layer of coatings, enhancing their protective ability.
{"title":"SILICATE COATINGS FILLED WITH ZINC POWDER AND GRAPHENE NANOPLATES FOR STEEL CORROSION PROTECTION","authors":"A. Kobets, I.A. Audzeychyk, T. N. Vorobyova, U.P. Novikov","doi":"10.32737/2221-8688-2023-1-29-40","DOIUrl":"https://doi.org/10.32737/2221-8688-2023-1-29-40","url":null,"abstract":"The method is proposed to protect the carbon steel from corrosion by silicate coatings filled with powdered zinc and graphene nanoplates obtained by thermal splitting of graphite. The conditions for steel pre-treatment in an alkaline solution containing citrate ions and a nonionic surfactant, for the production of potassium liquid glass composition with the addition of zinc and graphene powders are selected. It is shown that coatings 70–80 µm thick, cured at room temperature for three days and containing 80–90 wt. % zinc, 7– 12 wt. % silicon dioxide and 0.2 wt. % carbon have the highest adhesion, water resistance and protective ability. The study of steel corrosion in 3.5% NaCl solution using methods of voltammetry and the dependence of open circuit potential on the test duration showed that silicate coatings filled with zinc and graphene provide cathodic polarization of steel and protect it from corrosion better than twice as thick coatings obtained by hot galvanizing. Graphene nanoplates enhance the contact of zinc particles with each other and with steel, promoting its cathodic polarization. Using scanning electron microscopy and X-ray spectral microanalysis, it has been shown that zinc corrosion products fill the pores of the near-surface layer of coatings, enhancing their protective ability.","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"65 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82236243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.32737/2221-8688-2023-1-78-84
V.A. Vahabova
The data on the synthesis of the new monomer benzamidmetacrylate are presented in the article. Its composition and structure were established by physical and chemical methods of research. The regularities of radical homopolymerization reactions in mass and in benzene solution were studied with the aim of creating a new biocidal polymeric material for medical preparations. It is shown that polymerization under these conditions proceeds through the vinyl bond, without an induction period, at a constant initial rate without the formation of by-products, a monotonic increase in conversion up to 92% with the formation of a soluble polymer is observed. The composition and structure of the obtained polymer were established by elemental and spectral analyses. It showed that the polymer was characterized by a low toxicity at a significant biocidal activity towards E.coli and St.Aureus and that this polymer can be used in various fields, in particular as a biocidal preparation, a carrier of dosage forms in medicine. In addition, this polymer also exhibites optical translucency and can be used in optics.
{"title":"SYNTHESIS AND RADICAL POLYMERIZATION OF BENZAMIDMETACRYLATE","authors":"V.A. Vahabova","doi":"10.32737/2221-8688-2023-1-78-84","DOIUrl":"https://doi.org/10.32737/2221-8688-2023-1-78-84","url":null,"abstract":"The data on the synthesis of the new monomer benzamidmetacrylate are presented in the article. Its composition and structure were established by physical and chemical methods of research. The regularities of radical homopolymerization reactions in mass and in benzene solution were studied with the aim of creating a new biocidal polymeric material for medical preparations. It is shown that polymerization under these conditions proceeds through the vinyl bond, without an induction period, at a constant initial rate without the formation of by-products, a monotonic increase in conversion up to 92% with the formation of a soluble polymer is observed. The composition and structure of the obtained polymer were established by elemental and spectral analyses. It showed that the polymer was characterized by a low toxicity at a significant biocidal activity towards E.coli and St.Aureus and that this polymer can be used in various fields, in particular as a biocidal preparation, a carrier of dosage forms in medicine. In addition, this polymer also exhibites optical translucency and can be used in optics.","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"208 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76431516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.32737/2221-8688-2023-3-251-261
A. Rustamova, Z. Gurbanov, Z.M. Mammadova, S. Osmanova, A.Kh. Guluzade, A. Mammadov, E. H. Ismailov
Mono-, bi- and trinuclear carbinol derivatives of ferrocene C5H5FeC5H4-C(CH3)2OH (I), [C5H5FeC5H4]2C(CH3)OH (II), [C5H5FeC5H4]3C-OH (III) were synthesized. the thermal stability and thermodynamics of the pyrolysis of these compounds have been studied. The composition and structure of the synthesized compounds were established by elemental analysis (AAS, C, H analysis), 1H NMR, IR, and UV/visible spectroscopy. In the IR spectra of these compounds there are absorption bands with ν(OH) =2910-3040 cm-1 and ν(OH) = 3080-3190 cm-1 , and in the 1H NMR spectra there are absorption bands with chemical shift values δ(OH) = 4.29-4.18 ppm for OH groups that differ in position and are due to the formation of intra- and intermolecular associates with the participation of OH groups. The electronic absorption spectra indicate the presence of characteristic absorption bands in compounds I-III at λmax = 270 (I), 278 (II), and 285 nm (III). It is shown that when samples are heated from room temperature to 700 °C in an inert gas flow, the residual mass of compounds I-III is 2.05, 20.24, and 66.96% of the initial mass, respectively, and these compounds decompose to form nanosized iron particles. /iron oxide and carbon. The values of the melting temperature and saturation magnetization of nanosized iron particles formed during the pyrolysis of ferrocene and its derivatives I-III are calculated.
{"title":"THERMAL STABILITY AND THERMODYNAMICS OF PYROLYSIS OF MONO-, BI-, AND TRINUCLEAR CARBINOL DERIVATIVES OF FERROCENE","authors":"A. Rustamova, Z. Gurbanov, Z.M. Mammadova, S. Osmanova, A.Kh. Guluzade, A. Mammadov, E. H. Ismailov","doi":"10.32737/2221-8688-2023-3-251-261","DOIUrl":"https://doi.org/10.32737/2221-8688-2023-3-251-261","url":null,"abstract":"Mono-, bi- and trinuclear carbinol derivatives of ferrocene C5H5FeC5H4-C(CH3)2OH (I), [C5H5FeC5H4]2C(CH3)OH (II), [C5H5FeC5H4]3C-OH (III) were synthesized. the thermal stability and thermodynamics of the pyrolysis of these compounds have been studied. The composition and structure of the synthesized compounds were established by elemental analysis (AAS, C, H analysis), 1H NMR, IR, and UV/visible spectroscopy. In the IR spectra of these compounds there are absorption bands with ν(OH) =2910-3040 cm-1 and ν(OH) = 3080-3190 cm-1 , and in the 1H NMR spectra there are absorption bands with chemical shift values δ(OH) = 4.29-4.18 ppm for OH groups that differ in position and are due to the formation of intra- and intermolecular associates with the participation of OH groups. The electronic absorption spectra indicate the presence of characteristic absorption bands in compounds I-III at λmax = 270 (I), 278 (II), and 285 nm (III). It is shown that when samples are heated from room temperature to 700 °C in an inert gas flow, the residual mass of compounds I-III is 2.05, 20.24, and 66.96% of the initial mass, respectively, and these compounds decompose to form nanosized iron particles. /iron oxide and carbon. The values of the melting temperature and saturation magnetization of nanosized iron particles formed during the pyrolysis of ferrocene and its derivatives I-III are calculated.","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"137 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82666215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.32737/2221-8688-2023-2-161-167
V. Kyazimov, G.Z. Guseynov, N. Madji, М.А. Mirzoyeva, О.G. Nabiyev, G.S. Kyazimova, L.К. Vahid-zadeh
The interaction of benzalacetone with mercaptoacetic acid and its alkyl esters was used to synthesize and characterize new representatives of β-ketosulfides, the structure of which was proved by 1H and 13С NMR- spectroscopy. The gravimetric method was used to study the influence of the synthesized compounds on the corrosion rate of St-3 in various aggressive medium. It was established that the studied compounds inhibit the corrosion process both in single-phase acidic (0.1N HCl и 0.1N H2SO4), and in twophase (electrolyte-hydrocarbon) media. In the latter case, they are more effective - the corrosion rate of St-3 decreases from 2.1 to 0.06-0.35 g/m 2 hour, while the degree of protection against corrosion is 83.3-97.1 %. The studied compounds exhibit a greater protective effect in hydrochloric acid solution (97.1-92.45%), than in sulfuric acid (76.9-87.1%). Among the tested compounds, β-ketosulfide obtained on the basis of mercaptoacetic acid showed the highest inhibitory efficiency in both mediums.
{"title":"SYNTHESIS OF β-KETOSULFIDES BASED ON BENZALACETONE AND RESEARCH INTO THEIR INHIBITORY PROPERTIES","authors":"V. Kyazimov, G.Z. Guseynov, N. Madji, М.А. Mirzoyeva, О.G. Nabiyev, G.S. Kyazimova, L.К. Vahid-zadeh","doi":"10.32737/2221-8688-2023-2-161-167","DOIUrl":"https://doi.org/10.32737/2221-8688-2023-2-161-167","url":null,"abstract":"The interaction of benzalacetone with mercaptoacetic acid and its alkyl esters was used to synthesize and characterize new representatives of β-ketosulfides, the structure of which was proved by 1H and 13С NMR- spectroscopy. The gravimetric method was used to study the influence of the synthesized compounds on the corrosion rate of St-3 in various aggressive medium. It was established that the studied compounds inhibit the corrosion process both in single-phase acidic (0.1N HCl и 0.1N H2SO4), and in twophase (electrolyte-hydrocarbon) media. In the latter case, they are more effective - the corrosion rate of St-3 decreases from 2.1 to 0.06-0.35 g/m 2 hour, while the degree of protection against corrosion is 83.3-97.1 %. The studied compounds exhibit a greater protective effect in hydrochloric acid solution (97.1-92.45%), than in sulfuric acid (76.9-87.1%). Among the tested compounds, β-ketosulfide obtained on the basis of mercaptoacetic acid showed the highest inhibitory efficiency in both mediums.","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85976262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.32737/2221-8688-2023-3-294-300
K.Z. Huseynov, P. Aliyev, M. A. Mirzoyeva, I. Eyvazova, N. Aliyev
The method for obtaining alkoxycarbonylmethyl esters of thioacetic acid, based on the interaction of mercaptoacetic acid esters with acetic anhydride in an alkaline medium was proposed. It showed that an alternative way to obtain alkoxycarbonylmethyl esters of thioacetic acid is the reaction of mercaptoacetic acid esters with acetyl chloride in the presence of equimolar quantities of triethylamine. The interaction of mercaptoacetic acid esters with benzoyl chloride in the presence of equimolar amounts of triethylamine was used to synthesize appropriate alkoxycarbonylmethyl esters of thioacetic and thiobenzoic acids. Study into synthesized compounds as additives to lubricating oils revealed that addition of butoxycarbonyl methyl ester of thioacetic acid at a concentration of 1% in M-8 oil practically eliminated its corrodibility, while butoxycarbonyl methyl esters of thioacetic and thiobenzoic acids also had some lubricating and antimicrobial properties.
{"title":"SYNTHESIS OF ALKOXYCARBONYLMETHYL ESTERS OF THIOACETIC AND THIOBENZOIC ACIDS AND THEIR INVESTIGATION AS ADDITIVES TO LUBRICATING OILS","authors":"K.Z. Huseynov, P. Aliyev, M. A. Mirzoyeva, I. Eyvazova, N. Aliyev","doi":"10.32737/2221-8688-2023-3-294-300","DOIUrl":"https://doi.org/10.32737/2221-8688-2023-3-294-300","url":null,"abstract":"The method for obtaining alkoxycarbonylmethyl esters of thioacetic acid, based on the interaction of mercaptoacetic acid esters with acetic anhydride in an alkaline medium was proposed. It showed that an alternative way to obtain alkoxycarbonylmethyl esters of thioacetic acid is the reaction of mercaptoacetic acid esters with acetyl chloride in the presence of equimolar quantities of triethylamine. The interaction of mercaptoacetic acid esters with benzoyl chloride in the presence of equimolar amounts of triethylamine was used to synthesize appropriate alkoxycarbonylmethyl esters of thioacetic and thiobenzoic acids. Study into synthesized compounds as additives to lubricating oils revealed that addition of butoxycarbonyl methyl ester of thioacetic acid at a concentration of 1% in M-8 oil practically eliminated its corrodibility, while butoxycarbonyl methyl esters of thioacetic and thiobenzoic acids also had some lubricating and antimicrobial properties.","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"116 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79643524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.32737/2221-8688-2023-3-221-228
L. M. Maharramova, N. Jabbarova, M. Y. Abdullayeva
The present work is dedicated to the very important area of analytical chemistry—extractionphotometric determination of ions from a solid phase. We carried out studies on the extraction of nickel picrate (NiPik2) from the solid phase using solutions of tetrahalobicyclic reagents of the acetylene series with a dicarbonyl bridge in the side chain (L1, L2, L3, L4) of chloroform. New organic ligands were synthesized and their physicochemical properties - melting point, molecular weights, as well as their optical density studied. A new technique for the extraction-photometric determination of the nickel ion from the solid phase was developed. It found that new organic reagents (L1-L4) exhibit high extraction ability (0.11-0.64 mg/l) of Ni ions from the solid phase. When comparing the extraction activity of the studied reagents, it was revealed that the ability to extract organic ligands of tetrahalobicyclic reagents (L1-L4) changes in the following order: L4> L3> L1> L2. Magnetic field increased nickel extraction by 3-4%.
{"title":"EXTRACTION OF NICKEL (II) PICRATE FROM SOLID PHASE WITH ORGANIC REAGENTS","authors":"L. M. Maharramova, N. Jabbarova, M. Y. Abdullayeva","doi":"10.32737/2221-8688-2023-3-221-228","DOIUrl":"https://doi.org/10.32737/2221-8688-2023-3-221-228","url":null,"abstract":"The present work is dedicated to the very important area of analytical chemistry—extractionphotometric determination of ions from a solid phase. We carried out studies on the extraction of nickel picrate (NiPik2) from the solid phase using solutions of tetrahalobicyclic reagents of the acetylene series with a dicarbonyl bridge in the side chain (L1, L2, L3, L4) of chloroform. New organic ligands were synthesized and their physicochemical properties - melting point, molecular weights, as well as their optical density studied. A new technique for the extraction-photometric determination of the nickel ion from the solid phase was developed. It found that new organic reagents (L1-L4) exhibit high extraction ability (0.11-0.64 mg/l) of Ni ions from the solid phase. When comparing the extraction activity of the studied reagents, it was revealed that the ability to extract organic ligands of tetrahalobicyclic reagents (L1-L4) changes in the following order: L4> L3> L1> L2. Magnetic field increased nickel extraction by 3-4%.","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"151 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79407977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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