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Magnesium-chromium-aluminum spinels based on organochromiumoxane magnesiumoxane alumoxanes 基于有机铬氧镁氧铝氧的镁铬铝尖晶石
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2026-04-25 DOI: 10.1007/s11172-026-4929-y
G. I. Shcherbakova, A. I. Drachev, P. A. Storozhenko, M. S. Varfolomeev, E. A. Zhigalova, A. S. Pokhorenko
{"title":"Magnesium-chromium-aluminum spinels based on organochromiumoxane magnesiumoxane alumoxanes","authors":"G. I. Shcherbakova,&nbsp;A. I. Drachev,&nbsp;P. A. Storozhenko,&nbsp;M. S. Varfolomeev,&nbsp;E. A. Zhigalova,&nbsp;A. S. Pokhorenko","doi":"10.1007/s11172-026-4929-y","DOIUrl":"10.1007/s11172-026-4929-y","url":null,"abstract":"<div><p>New magnesium-chromium-aluminum spinels with the compositions Mg<sub>0.967</sub>Al<sub>1.985</sub>Cr<sub>0.048</sub>O<sub>4</sub> and Mg<sub>0.75</sub>Al<sub>1.3125</sub>Cr<sub>0.9375</sub>O<sub>4</sub> were synthesized by thermal transformation of organochromiumoxane magnesiumoxane alumoxanes, in which a chromium atom was incorporated into the molecular structure of the oligomer. The crystallographic parameters of these spinels were calculated for the first time. The crystal lattice constant of the magnesium-chromium-aluminum spinels depends not only on the ratio of the components but also on the sizes of the crystallites. Thermal conductivity of the synthesized spinels was studied and, depending on the chromium content, temperature, and crystal lattice constant, was found to vary in the range from 3.6 to 16.1 W m<sup>−1</sup> K<sup>−1</sup>.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"740 - 750"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738674","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
Esterase profile, antioxidant activity, and electrochemical properties of sterically hindered phenolic isatin derivatives 酯酶谱，抗氧化活性，和电化学性质的立体受阻酚isatin衍生物
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2026-04-25 DOI: 10.1007/s11172-026-4943-0
A. V. Bogdanov, G. F. Makhaeva, N. P. Boltneva, N. V. Kovaleva, E. V. Rudakova, A. V. Sukhov, A. R. Khamatgalimov, D. G. Yakhvarov
{"title":"Esterase profile, antioxidant activity, and electrochemical properties of sterically hindered phenolic isatin derivatives","authors":"A. V. Bogdanov,&nbsp;G. F. Makhaeva,&nbsp;N. P. Boltneva,&nbsp;N. V. Kovaleva,&nbsp;E. V. Rudakova,&nbsp;A. V. Sukhov,&nbsp;A. R. Khamatgalimov,&nbsp;D. G. Yakhvarov","doi":"10.1007/s11172-026-4943-0","DOIUrl":"10.1007/s11172-026-4943-0","url":null,"abstract":"<div><p>The introduction of an ionol fragment at the N(1) position of substituted isatins leads to formation of compounds capable of effectively inhibiting pharmacologically important serine esterases, <i>viz.</i>, acetylcholinesterase and carboxylesterase, and possessing the antioxidant activity. An inverse correlation between the antioxidant activity in the ABTS test and the calculated values of the Δ<sub>HOMO-LUMO</sub> (<i>r</i><sup>2</sup> = 0.69, <i>n</i> = 11, <i>p</i> = 0.0015) is demonstrated. The electrochemical properties of the synthesized compounds were studied by cyclic voltammetry.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"889 - 898"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738897","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
Self-organization, physicochemical properties, and effects on hydrobionts of dilute water—ethanol—estrone systems 稀水-乙醇-雌酮体系的自组织、理化性质及其对水生物的影响
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2026-04-25 DOI: 10.1007/s11172-026-4927-0
I. S. Ryzhkina, L. A. Kostina, L. I. Murtazina, K. A. Muravtseva, S. Yu. Sergeeva, Yu. V. Mursalova, I. S. Dokuchaeva, T. V. Kuznetsova, A. M. Petrov
{"title":"Self-organization, physicochemical properties, and effects on hydrobionts of dilute water—ethanol—estrone systems","authors":"I. S. Ryzhkina,&nbsp;L. A. Kostina,&nbsp;L. I. Murtazina,&nbsp;K. A. Muravtseva,&nbsp;S. Yu. Sergeeva,&nbsp;Yu. V. Mursalova,&nbsp;I. S. Dokuchaeva,&nbsp;T. V. Kuznetsova,&nbsp;A. M. Petrov","doi":"10.1007/s11172-026-4927-0","DOIUrl":"10.1007/s11172-026-4927-0","url":null,"abstract":"<div><p>Self-organization, pH, specific electrical conductivity, surface tension, and UV absorption and fluorescence spectra of dilute water—ethanol—estrone solutions (series <b>1</b>) and water—ethanol (series <b>2</b>) were studied. A relationship was established between the reorganization of the dispersed phase, non-monotonic changes in the physicochemical properties, fluorescence intensity (λ<sub>ex</sub> 230 nm, λ<sub>em</sub> 340 nm), which occur as the systems of series <b>1</b> were diluted, and their toxic and harmful effects on the abundance of green algae <i>Chlorella vulgaris</i> and mortality of cladocerans <i>Ceriodaphnia affinis</i>. The highest impact on the hydrobionts was observed in the vicinity of the calculated concentrations of estrone where the most pronounced changes in the size of the dispersed phase, fluorescence intensity, and physicochemical properties were detected. No relationship between structure formation, properties, and bioeffects was observed in dilute solutions of series <b>2</b>, which are less prone to self-organization and impact on the hydrobionts.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"723 - 732"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738628","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
Antitumor RuII and IrIII complexes with ligands containing a comenic acid moiety 抗肿瘤RuII和IrIII配合物，配体中含有一个共基因组酸片段
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2026-04-25 DOI: 10.1007/s11172-026-4930-5
S. A. Ovakimyan, N. A. Melnichuk, D. M. Mazur, E. R. Milaeva, A. A. Nazarov, I. A. Shutkov
{"title":"Antitumor RuII and IrIII complexes with ligands containing a comenic acid moiety","authors":"S. A. Ovakimyan,&nbsp;N. A. Melnichuk,&nbsp;D. M. Mazur,&nbsp;E. R. Milaeva,&nbsp;A. A. Nazarov,&nbsp;I. A. Shutkov","doi":"10.1007/s11172-026-4930-5","DOIUrl":"10.1007/s11172-026-4930-5","url":null,"abstract":"<div><p>A series of imidazole ligands containing a comenic acid moiety with alkyl linkers of various lengths were synthesized. These imidazole ligands were used to synthesize organometallic Ru<sup>II</sup> and Ir<sup>III</sup> compounds. The Ru<sup>II</sup> and Ir<sup>III</sup> complexes containing a substituted comenic acid moiety were shown to exhibit moderate micromolar <i>in vitro</i> antiproliferative activity on the human ovarian carcinoma cell line A2780, its cisplatin-resistant analog A2780cis, and the healthy human epithelial cell line HEK293.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"751 - 759"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738668","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
Clustering of reverse micelles based on surfactants with different molecular structural morphology. Diffusion processes and electrical percolation 基于不同分子结构形态表面活性剂的反胶束聚类。扩散过程和电渗流
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2026-04-25 DOI: 10.1007/s11172-026-4942-1
A. N. Turanov, M. A. Klimovitskaya, Yu. A. Valiullina, O. S. Zueva, Yu. F. Zuev
{"title":"Clustering of reverse micelles based on surfactants with different molecular structural morphology. Diffusion processes and electrical percolation","authors":"A. N. Turanov,&nbsp;M. A. Klimovitskaya,&nbsp;Yu. A. Valiullina,&nbsp;O. S. Zueva,&nbsp;Yu. F. Zuev","doi":"10.1007/s11172-026-4942-1","DOIUrl":"10.1007/s11172-026-4942-1","url":null,"abstract":"<div><p>Surfactant-based microemulsions are widely used for effective encapsulation of various substances, as delivery vehicles for physiologically active compounds, and the media for chemical and biochemical reactions. Their structure and properties affect the efficiency of required tasks. The paper considers the phenomenon of reverse micelle clustering and temperature changes in the process of substance transfer in the volume of surfactant-based microheterogeneous systems. A comparison of clustering and effects of diffusion transfer of substances in microemulsions of surfactants with different structures, <i>viz.</i>, anionic sodium bis(2-ethylhexyl)sulfosuccinate (AOT) and cationic cetyltrimethylammonium bromide (CTAB), was carried out. It was found that structural morphology of surfactant molecules, which determines the conditions of contact between surfaces of reverse micelles, the likelihood of water channel formation between them, and the composition of the dispersed phase, has a dominant influence on the structure and properties of water-in-oil microemulsions. Butanol, used as a cosurfactant in the CTAB-based microemulsion, was shown to partially dissolve in decane, carrying with it some of the water.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"881 - 888"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738672","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
Multiple methyl viologen-mediated electrosynthesis of silver nanoparticles 多甲基紫原介导的纳米银的电合成
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2026-04-25 DOI: 10.1007/s11172-026-4924-3
R. R. Fazleeva, G. R. Nasretdinova, V. G. Evtyugin, A. T. Gubaidullin, V. V. Yanilkin
{"title":"Multiple methyl viologen-mediated electrosynthesis of silver nanoparticles","authors":"R. R. Fazleeva,&nbsp;G. R. Nasretdinova,&nbsp;V. G. Evtyugin,&nbsp;A. T. Gubaidullin,&nbsp;V. V. Yanilkin","doi":"10.1007/s11172-026-4924-3","DOIUrl":"10.1007/s11172-026-4924-3","url":null,"abstract":"<div><p>Multiple mediated electrosynthesis is a promising approach to the large-scale production of metal nanoparticles. The electrosynthesis of silver nanoparticles (Ag NPs) is used as a representative example of the application of an efficient ten-fold electrochemical method for the preparation of Ag NPs in an aqueous medium. This method is based on the electroreduction of metal ions, generated by the dissolution of a silver anode, in the presence of methyl viologen (MV<sup>2+</sup>), which undergoes reversible reduction in the first stage, acting as a mediator. After the transfer of an electron to the Ag<sup>+</sup> ion, the mediator is regenerated directly during electrolysis and can be repeatedly used for the synthesis of high-performing metal catalysts. The catalytic activity of the resulting Ag NPs in the sodium borohydride-assisted reduction of <i>p</i>-nitrophenol was investigated.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"699 - 710"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738669","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
Carbocationic cyclization of 1-phenyloct-3-yne mediated by 1,2-zwitterionic gallium complexes of methylidene malonates 丙二酸甲酯1,2-两性离子镓配合物介导的1-苯基-3-炔的碳阳离子环化
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2026-04-25 DOI: 10.1007/s11172-026-4951-0
D. D. Borisov, M. A. Novikov, R. A. Novikov, Yu. V. Tomilov
{"title":"Carbocationic cyclization of 1-phenyloct-3-yne mediated by 1,2-zwitterionic gallium complexes of methylidene malonates","authors":"D. D. Borisov,&nbsp;M. A. Novikov,&nbsp;R. A. Novikov,&nbsp;Yu. V. Tomilov","doi":"10.1007/s11172-026-4951-0","DOIUrl":"10.1007/s11172-026-4951-0","url":null,"abstract":"","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"955 - 958"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738673","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
GaCl3-mediated three-component carbocationic cyclization of methyl 1-cyano-2-phenylcyclopropane-1-carboxylate with 5-decyne gacl3介导的1-氰基-2-苯基环丙烷-1-羧酸甲酯与5-癸炔的三组分碳阳离子环化
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2026-04-25 DOI: 10.1007/s11172-026-4952-z
D. D. Borisov, M. A. Novikov, R. A. Novikov, Y. V. Tomilov
{"title":"GaCl3-mediated three-component carbocationic cyclization of methyl 1-cyano-2-phenylcyclopropane-1-carboxylate with 5-decyne","authors":"D. D. Borisov,&nbsp;M. A. Novikov,&nbsp;R. A. Novikov,&nbsp;Y. V. Tomilov","doi":"10.1007/s11172-026-4952-z","DOIUrl":"10.1007/s11172-026-4952-z","url":null,"abstract":"","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"959 - 961"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738808","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
Absorption of molecular oxygen by the butyl glycidyl ether—hydroquinone—pyridine ternary system in a polar solvent 极性溶剂中丁基缩水甘油醚-对苯二酚-吡啶三元体系对分子氧的吸收
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2026-04-25 DOI: 10.1007/s11172-026-4928-z
L. V. Petrov, V. M. Solyanikov
{"title":"Absorption of molecular oxygen by the butyl glycidyl ether—hydroquinone—pyridine ternary system in a polar solvent","authors":"L. V. Petrov,&nbsp;V. M. Solyanikov","doi":"10.1007/s11172-026-4928-z","DOIUrl":"10.1007/s11172-026-4928-z","url":null,"abstract":"<div><p>The oxidation of the butyl glycidyl ether—hydroquinone—pyridine ternary system (TrS) with oxygen in an aqueous solution of <i>tert</i>-butyl alcohol (Bu<sup>t</sup>OH : H<sub>2</sub>O = 80:20 v/v) was studied. The oxidation rate increases with increasing H<sub>2</sub>O concentration in Bu<sup>t</sup>OH. The rate of O<sub>2</sub> absorption is directly proportional to the Py concentration. The rate of hydroquinone consumption depends on the Py concentration in a similar way. The activation energy of TrS oxidation determined in the 323–338 K temperature range is only 13.2 kJ mol<sup>−1</sup>.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"733 - 739"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738629","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 and luminescence of polystyrene grafted with curcuminoid and boron difluoride benzoylacetonate groups 类姜黄素和二氟化硼苯甲酰丙酮基接枝聚苯乙烯的合成与发光
IF 1.7 4区 化学
Russian Chemical Bulletin Pub Date : 2026-04-25 DOI: 10.1007/s11172-026-4946-x
E. V. Fedorenko, A. G. Mirochnik
{"title":"Synthesis and luminescence of polystyrene grafted with curcuminoid and boron difluoride benzoylacetonate groups","authors":"E. V. Fedorenko,&nbsp;A. G. Mirochnik","doi":"10.1007/s11172-026-4946-x","DOIUrl":"10.1007/s11172-026-4946-x","url":null,"abstract":"<div><p>The preparation of luminescent polymers grafted with chromophore groups and the study of the processes of intra- and intermolecular transfer and migration of electron excitation energy in a polymer medium is of considerable theoretical and practical interest. A polymer based on modified polystyrene grafted with curcuminoids and boron difluoride benzoylacetonate groups was obtained through aldol-croton condensation. Solutions of the resulting polymer are brightly colored and emit intense luminescence in the orange-red region of the spectrum. In contrast to the low molecular analogue dye (the quantum yield of 0.26–0.53), the quantum yield of luminescence of the polymer (0.42–0.67) weakly depends on the polarity of the solvent. It is demonstrated using stationary and time-resolved fluorescence methods that in solution and in polymer film the formation of exciplexes between benzoylacetonate groups followed by subsequent transfer of energy to dimethyl-aminophenyl groups.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"920 - 927"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738643","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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