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Controlled synthesis of (co)polymers of stearyl methacrylate with acrylonitrile and their use as depressants for diesel fuel
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2025-03-25 DOI: 10.1007/s11172-025-4515-8
D. F. Grishin, M. V. Pavlovskaya, I. P. Kriulichev, E. D. Dolganov, I. D. Grishin
{"title":"Controlled synthesis of (co)polymers of stearyl methacrylate with acrylonitrile and their use as depressants for diesel fuel","authors":"D. F. Grishin,&nbsp;M. V. Pavlovskaya,&nbsp;I. P. Kriulichev,&nbsp;E. D. Dolganov,&nbsp;I. D. Grishin","doi":"10.1007/s11172-025-4515-8","DOIUrl":"10.1007/s11172-025-4515-8","url":null,"abstract":"<div><p>The specific features of the synthesis of homo- and copolymers of stearyl methacrylate using a catalytic system based on copper(<span>i</span>) bromide and nitrogen-containing ligands with various structures, as well as bromine-containing initiators, were studied. The determined regularities of (co)polymerization, including a nearly linear dependence of the number-average molecular weight of polymers on conversion, as well as good agreement between the calculated and experimentally determined molecular weight of polymers in combination with low polydispersion index values characterizing the obtained samples, indicate that polymerization has a controlled nature. The synthesized homo- and copolymers have a considerable effect on the low-temperature properties of diesel fuel, simultaneously reducing the cloud point and pour point, as well as the cold filter plugging point of diesel fuel.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 1","pages":"201 - 209"},"PeriodicalIF":1.7,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bromosulfonamidation of divinylsilanes: a theoretical analysis of the reaction mechanism and the supramolecular structure of reaction products 二乙烯基硅烷的溴磺酰胺化反应：反应机理和反应产物超分子结构的理论分析
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2025-03-25 DOI: 10.1007/s11172-025-4495-8
L. P. Oznobikhina, N. N. Chipanina, V. V. Astakhova, M. Yu. Moskalik, B. A. Shainyan
{"title":"Bromosulfonamidation of divinylsilanes: a theoretical analysis of the reaction mechanism and the supramolecular structure of reaction products","authors":"L. P. Oznobikhina,&nbsp;N. N. Chipanina,&nbsp;V. V. Astakhova,&nbsp;M. Yu. Moskalik,&nbsp;B. A. Shainyan","doi":"10.1007/s11172-025-4495-8","DOIUrl":"10.1007/s11172-025-4495-8","url":null,"abstract":"<div><p>Bromosulfonamidation of divinylsilanes involving interception of solvent molecule (acetonitrile) was analyzed theoretically in terms of the density functional theory (DFT). The energies of all intermediates were calculated and the changes of the energy profile of the reaction on going from silanes to their carbon analogues were evaluated. The calculated molecular electrostatic potential (MEP) values in monomeric molecules of reaction products were used as a quantitative measure of the basicity and acidity of the centers involved in the formation of different types of self-associates. The energies of intermolecular hydrogen bonds NH⋯OS, NH⋯N, and CH⋯OS were calculated. The nature of these hydrogen bonding interactions was analyzed in terms of the quantum theory “Atoms in Molecules” (QTAIM). A comparison of the results of calculations and experimental IR spectroscopy data suggests that linear dimers of reaction products provide a basis for the supramolecular structure in the solid phase.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 1","pages":"26 - 34"},"PeriodicalIF":1.7,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assembly of phenylaminopyrrolo[1,2-a]pyrazinium salts from N-allenylpyrrole-2-carbaldehydes and phenylhydrazine in the presence of acids
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2025-03-25 DOI: 10.1007/s11172-025-4510-0
E. A. Gyrgenova, S. V. Martynovskaya, I. A. Ushakov, A. V. Ivanov
{"title":"Assembly of phenylaminopyrrolo[1,2-a]pyrazinium salts from N-allenylpyrrole-2-carbaldehydes and phenylhydrazine in the presence of acids","authors":"E. A. Gyrgenova,&nbsp;S. V. Martynovskaya,&nbsp;I. A. Ushakov,&nbsp;A. V. Ivanov","doi":"10.1007/s11172-025-4510-0","DOIUrl":"10.1007/s11172-025-4510-0","url":null,"abstract":"<div><p>The investigation of the reaction of <i>N</i>-allenylpyrrole-2-carbaldehydes with phenylhydrazine demonstrated that, unlike the reactions with hydrazine hydrate, ethyl- and benzylhydrazines, it affords phenylaminopyrrolo[1,2-<i>a</i>]pyrazinium salts as the only products in nearly quantitative yields. The reaction tolerates a wide range of substituted pyrroles, as well as organic and inorganic acids. The synthesized compounds are promising building blocks for the design of pharmaceuticals and their precursors.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 1","pages":"143 - 150"},"PeriodicalIF":1.7,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interaction of polyamines with perrhenate ions: influence of Brønsted basicity of the polymer matrix 多胺与过铼酸根离子的相互作用：聚合物基体布氏碱性的影响
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2025-03-25 DOI: 10.1007/s11172-025-4501-1
O. V. Melchakova, A. V. Pestov, A. D. Korobitsyna, N. V. Pechishcheva
{"title":"Interaction of polyamines with perrhenate ions: influence of Brønsted basicity of the polymer matrix","authors":"O. V. Melchakova,&nbsp;A. V. Pestov,&nbsp;A. D. Korobitsyna,&nbsp;N. V. Pechishcheva","doi":"10.1007/s11172-025-4501-1","DOIUrl":"10.1007/s11172-025-4501-1","url":null,"abstract":"<div><p>The adsorption of Re<sup>VII</sup> was estimated for polyethyleneimine (PEI), polyallylamine (PAA), and polyaminostyrene (PAST) possessing different Brønsted basicity. A high adsorption of Re<sup>VII</sup> (up to 97%) from the acetate buffer solution was observed in the pH range of 2.8–3.1 for PEI and PAST, and in the pH range of 2.8–5.2 for PAA. The kinetic data indicated a mixed diffusion mode for the sorption with a significant contribution of the step of chemical interaction between Re<sup>VII</sup> and functional groups of the sorbents. Rapid establishment of the equilibrium (within 5–10 min) was observed for all the sorbents in contrast with industrial anion exchangers used as the reference. The isotherms plotted for the sorption of Re<sup>VII</sup> within the concentration range of 5–400 mg L<sup>−1</sup> were mathematically processed within the framework of the Langmuir, Freundlich, and Dubinin—Radushkevich models. The affinity of Re<sup>VII</sup> towards the sorbents decreases in the series of PAA &gt; PEI &gt; PAST. The values calculated for the sorption capacity of PAA (1.81 mmol g<sup>−1</sup>), PEI (2.43 mmol g<sup>−1</sup>), and PAST (0.98 mmol g<sup>−1</sup>) were not inferior to the corresponding values for modern weakly basic sorbents. The presence of a 200 fold excess of Cu<sup>II</sup> in the solution caused virtually no effect on the sorption of Re<sup>VII</sup>. At 200 fold excess of Mo<sup>VI</sup>, the adsorption of Re<sup>VII</sup> on PAST (<i>A</i> = 94%) and PEI (<i>A</i> = 85%) remained at a high level, whereas in the case of PAA, the effect of Mo<sup>VI</sup> was more significant decreasing the sorption by 36.5%.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 1","pages":"72 - 82"},"PeriodicalIF":1.7,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of 1-[3-(trimethoxysilyl)propyl]-1H-1,2,4-triazole 1-[3-(三甲氧基硅基)丙基]-1H-1,2,4-三唑的合成
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2025-03-25 DOI: 10.1007/s11172-025-4507-8
N. A. El’kov, Dzh. N. Konshina, I. A. Lupanova, E. S. Spesivaya, V. V. Konshin
{"title":"Synthesis of 1-[3-(trimethoxysilyl)propyl]-1H-1,2,4-triazole","authors":"N. A. El’kov,&nbsp;Dzh. N. Konshina,&nbsp;I. A. Lupanova,&nbsp;E. S. Spesivaya,&nbsp;V. V. Konshin","doi":"10.1007/s11172-025-4507-8","DOIUrl":"10.1007/s11172-025-4507-8","url":null,"abstract":"<div><p>By alkylation of the sodium salt of 1,2,4-triazole with (3-chloropropyl)trimethoxysilane in a boiling toluene—DMF mixture for 3 h, 1-[3-(trimethoxysifyl)propyl]-1<i>H</i>-1,2,4-triazole was synthesized with a yield of 86%. The possibility of the use of this compound to obtain materials with covalently immobilized 1,2,4-triazole moieties both by modifying the surface of silica gel and by the sol—gel process using joint hydrolytic condensation with tetraethoxysilane was shown.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 1","pages":"120 - 124"},"PeriodicalIF":1.7,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Novel three-component reaction of 1-amino-2-(trifluoroacetyl)cyclobutenes, dimethyl acetylenedicarboxylate, and triphenylphosphine 1-amino-2-(trifluoroacetyl)cyclobutenes, dimethyl acetylenedicarboxylate, and triphenylphosphine 的新型三组分反应
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2025-03-25 DOI: 10.1007/s11172-025-4522-9
A. B. Koldobskii, N. V. Abramova, O. S. Shilova
{"title":"Novel three-component reaction of 1-amino-2-(trifluoroacetyl)cyclobutenes, dimethyl acetylenedicarboxylate, and triphenylphosphine","authors":"A. B. Koldobskii,&nbsp;N. V. Abramova,&nbsp;O. S. Shilova","doi":"10.1007/s11172-025-4522-9","DOIUrl":"10.1007/s11172-025-4522-9","url":null,"abstract":"","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 1","pages":"261 - 264"},"PeriodicalIF":1.7,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of heterocycles bearing 2(5H)-furanone and (S)-naproxen moieties
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2025-02-20 DOI: 10.1007/s11172-024-4472-7
A. M. Khabibrakhmanova, R. R. Zamalieva, L. Z. Latypova, O. A. Lodochnikova, E. Sh. Saigitbatalova, N. V. Shtyrlin, A. R. Kurbangalieva
{"title":"Synthesis of heterocycles bearing 2(5H)-furanone and (S)-naproxen moieties","authors":"A. M. Khabibrakhmanova,&nbsp;R. R. Zamalieva,&nbsp;L. Z. Latypova,&nbsp;O. A. Lodochnikova,&nbsp;E. Sh. Saigitbatalova,&nbsp;N. V. Shtyrlin,&nbsp;A. R. Kurbangalieva","doi":"10.1007/s11172-024-4472-7","DOIUrl":"10.1007/s11172-024-4472-7","url":null,"abstract":"<div><p>Methods for the synthesis of novel heterocyclic compounds bearing an unsaturated γ-lactone ring and an (<i>S</i>)-naproxen moiety were developed. The <i>O</i>-acylation reactions of 3,4-dihalo-5-hydroxy-2(5<i>H</i>)-furanones with (<i>S</i>)-(+)-2-(6-methoxy-2-naphthyl)propionyl chloride in the presence of Et<sub>3</sub>N afforded optically active furanone derivatives bearing an (<i>S</i>)-naproxen moiety at the 5 position of the lactone ring. Optically active 4-arylsulfanyl derivatives of 2(5<i>H</i>)-furanone were obtained by the reaction of the isolated (<i>R,S</i>) stereoisomers of 3,4-dihalofuranones with aromatic thiols. A series of heterocycles were synthesized based on 5-alkoxy- and 5-haloahkoxy-2(5<i>H</i>)-furanones containing an (<i>S</i>)-naproxen moiety in the side chain of the hydroxyethylthio substituent on the carbon atom C(4) of the five-membered ring. The structures of three new heterocycles were determined by X-ray diffraction.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"73 12","pages":"3612 - 3623"},"PeriodicalIF":1.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New heteroleptic palladium complexes with amino acid and bornane ligands: synthesis and antibacterial activity
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2025-02-20 DOI: 10.1007/s11172-024-4468-3
Ya. A. Gur’eva, O. A. Zalevskaya, V. A. Makarov, A. V. Kutchin
{"title":"New heteroleptic palladium complexes with amino acid and bornane ligands: synthesis and antibacterial activity","authors":"Ya. A. Gur’eva,&nbsp;O. A. Zalevskaya,&nbsp;V. A. Makarov,&nbsp;A. V. Kutchin","doi":"10.1007/s11172-024-4468-3","DOIUrl":"10.1007/s11172-024-4468-3","url":null,"abstract":"<div><p>Novel chiral palladium complexes containing camphor benzylimine and <span>l</span>-amino acids (proline, tyrosine, serine, isoleucine) as ligands were synthesized and characterized by elemental analysis and by NMR and IR spectroscopies. The antibacterial activity of the new and previously synthesized complexes and reference compounds against the bacteria MRSA, <i>S. aureus, P. aeruginosa, E. coli</i>, and <i>M. vaccae</i> was studied. It was found that the introduction of an amino acid ligand does not contribute to the activity of the mononuclear complex compared to the starting binuclear analogue. The binuclear palladacycle obtained from camphor benzylimine showed the highest activity against the pathogenic strains MRSA and <i>M. vaccae</i> (MIC = 8 mg L<sup>−1</sup>), which is comparable with that of the clinical antibiotics used for comparison.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"73 12","pages":"3578 - 3585"},"PeriodicalIF":1.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Physicochemical patterns of dilute aqueous solutions of biologically active substances: a relationship of self-organization, properties, and bioeffects
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2025-02-20 DOI: 10.1007/s11172-024-4465-6
I. S. Ryzhkina, L. I. Murtazina
{"title":"Physicochemical patterns of dilute aqueous solutions of biologically active substances: a relationship of self-organization, properties, and bioeffects","authors":"I. S. Ryzhkina,&nbsp;L. I. Murtazina","doi":"10.1007/s11172-024-4465-6","DOIUrl":"10.1007/s11172-024-4465-6","url":null,"abstract":"<div><p>The results of studies are considered in which the key physicochemical patterns of aqueous solutions of biologically active substances (BAS) of low concentrations prepared by the method of decimal dilutions and maintained under the conditions of natural and lowered levels of external physical fields have been established for the first time and described in terms of the self-organization of dispersed systems based on the study of a complex of experimental methods. A relationship between nonmonotonic coherent concentration dependences of the size, ζ-potential of the dispersed phase (nanoassociates), fluorescence intensity, UV absorption, specific electrical conductivity, surface tension, pH, and found by ecotoxicological tests biological properties of dilute solutions of practically important BAS (drugs, metabolic regulators, pesticides) was revealed using the developed algorithm. It has been shown that the consistency of nonmonotonic changes in the parameters of nanoassociates and properties of the systems in the range of low calculated concentrations makes it possible to predict bioeffects of the dilute BAS systems based on their physicochemical screening. The developed approach, which has predictive capabilities, and the established patterns contribute to the scientific foundation associated with the physicochemical substantiation of the nonmonotonic changes in the properties and elucidation of the mechanisms of the influence of aqueous dilute BAS systems and hypomagnetic conditions on the functioning of living organisms and form a methodological basis for future technologies in medicine, agriculture, protection of aquatic ecosystems and other areas of human activity.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"73 12","pages":"3487 - 3522"},"PeriodicalIF":1.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The effect of microtubule destabilizing compounds on the infection of Vero cells with the SARS-CoV-2 coronavirus
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2025-02-20 DOI: 10.1007/s11172-024-4484-3
V. V. Zarubaev, Ya. L. Esaulkova, S. V. Belyaevskaya, O. I. Adaeva, D. V. Demchuk, T. S. Kuptsova, M. N. Semenova, V. V. Semenov
{"title":"The effect of microtubule destabilizing compounds on the infection of Vero cells with the SARS-CoV-2 coronavirus","authors":"V. V. Zarubaev,&nbsp;Ya. L. Esaulkova,&nbsp;S. V. Belyaevskaya,&nbsp;O. I. Adaeva,&nbsp;D. V. Demchuk,&nbsp;T. S. Kuptsova,&nbsp;M. N. Semenova,&nbsp;V. V. Semenov","doi":"10.1007/s11172-024-4484-3","DOIUrl":"10.1007/s11172-024-4484-3","url":null,"abstract":"<div><p>Microtubules, cytoskeleton components, are essential for viruses for their transportation to the replication site as well as for the subsequent release from the cell, so affecting the structure and function of microtubules could be considered as a promising approach to suppress viral infection. In this regard, 50 chemical compounds of various structures with microtubule destabilizing mechanism of action were tested on Vero cells infected with the SARS-CoV-2 coronavirus (Wuhan line). Combretastatin analogs, polyalkoxy-substituted 4,5- and 3,4-diarylpyridazines (24 compounds), were synthesized in 73–99% yields by the Diels—Alder reaction of tetrazines with aryl- and diarylacetylenes. The previously described antitubulin agents were also studied, including various derivatives of combretastatin, podophyllotoxin, and indibulin, as well as isoflavonoid glaziovianin, <i>etc</i>. Nine compounds with a selectivity index &gt;10 were found within the analogs of combretastatins A-2 and A-4, namely, 5 diarylpyridazines, diarylpyrazole, two diarylisoxazoles, and chalcone. In general, the ability of the compounds to suppress viral infection did not depend on the value of their antimitotic antitubulin activity. However, the most effective inhibitor of viral infection, bromo-substituted diarylpyrazole <b>9</b> with a selectivity index of 241, exhibited a pronounced antimitotic effect as well, causing sea urchin embryo cleavage alteration at a concentration of 5 nmol L<sup>−1</sup>.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"73 12","pages":"3740 - 3755"},"PeriodicalIF":1.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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