Russian Journal of Inorganic Chemistry最新文献_第3页

Quantum-Chemical Modeling of Interactions of Fe2O7 and Fe2O9 Clusters with H2 and O2 Molecules Fe2O7和Fe2O9团簇与H2和O2分子相互作用的量子化学模拟

IF 1.8 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S0036023624602824

K. V. Bozhenko, A. N. Utenyshev, L. G. Gutsev, S. M. Aldoshin, G. L. Gutsev

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Synthesis, Structure, and Properties of Sr1−1.5x–yBix+yФ0.5xMo1–yVyO4 and Sr1−1.5xBixФ0.5xMo1–yVyO4–d Solid Solutions Sr1−1.5x-yBix + yФ0.5xMo1-yVyO4和Sr1−1.5xBixФ0.5xMo1-yVyO4-d固溶体的合成、结构与性能

IF 1.8 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S0036023624602873

A. V. Klimova, Z. A. Mikhaylovskaya, E. S. Buyanova, S. A. Petrova

{"title":"Synthesis, Structure, and Properties of Sr1−1.5x–yBix+yФ0.5xMo1–yVyO4 and Sr1−1.5xBixФ0.5xMo1–yVyO4–d Solid Solutions","authors":"A. V. Klimova, Z. A. Mikhaylovskaya, E. S. Buyanova, S. A. Petrova","doi":"10.1134/S0036023624602873","DOIUrl":"10.1134/S0036023624602873","url":null,"abstract":"The synthesis conditions, structure details, and electrical conductivity of cation- and anion-deficient scheelite-like solid solutions Sr1 − 1.5x – yBix + yФ0.5xMo1 – yVyO4 and Sr1 − 1.5xBixФ0.5xMo1 – yVyO4 – d, where Ф is a cation vacancy, have been studied. The homogeneity ranges of solid solutions were determined, and their structural features were studied using a set of methods. The morphology of ceramic samples was studied by scanning electron microscopy. The total electrical conductivity of the compounds was measured by impedance spectroscopy in the temperature range 400–650°C. To estimate the contribution of the electron and proton components to the total electrical conductivity of solid solutions, the electrical conductivity characteristics were measured in a humid atmosphere and at various partial pressures of oxygen. The Arrhenius plots of the electrical conductivity were analyzed.","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"69 12","pages":"1814 - 1822"},"PeriodicalIF":1.8,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143554170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Physicochemical Study of Oxidized Mesoporous Carbon Materials 氧化介孔碳材料的物理化学研究

IF 1.8 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S0036023624601880

L. M. Levchenko, A. K. Sagidullin, N. I. Matskevich

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Changes in the Excited State Relaxation Pathway of Ruthenium(II) Bipyridine Complexes with Substituted Imidazo[4,5-f]-1,10-phenanthroline Ligands upon Additional Coordination of the Second Metal Cation 钌（II）联吡啶配合物与取代咪唑[4,5-f]-1,10-菲罗啉配体在第二金属阳离子附加配位时激发态弛豫途径的变化

IF 1.8 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S0036023624601600

A. Botezatu, S. D. Tokarev, Yu. V. Fedorov, O. A. Fedorova

{"title":"Changes in the Excited State Relaxation Pathway of Ruthenium(II) Bipyridine Complexes with Substituted Imidazo[4,5-f]-1,10-phenanthroline Ligands upon Additional Coordination of the Second Metal Cation","authors":"A. Botezatu, S. D. Tokarev, Yu. V. Fedorov, O. A. Fedorova","doi":"10.1134/S0036023624601600","DOIUrl":"10.1134/S0036023624601600","url":null,"abstract":"A new type of mixed-ligand heterobimetallic ruthenium(II) complexes has been reported. At the first stage, monoruthenium(II) complexes with ruthenium(II) cation coordinated to the N,N fragment of imidazo[4,5-f]-1,10-phenanthroline ligand containing bridging thiophene fragment and free coordination center of pyridine have been obtained. This coordination center strongly binds to the second metal cation of the studied series (Fe3+, Fe2+, Zn2+, or Pb2+) to form heterobimetallic complex, which is confirmed by optical, luminescent, and NMR titration and quantum chemical computations. The coordination of the second cation leads to the considerable decrease of LUMO energy as compared with the initial monoruthenium complex which results in phosphorescence quenching caused by the relaxation of excited 3MLCT state typical for monoruthenium complexes. It has been shown additionally that the presence of bridging thiophene fragment increases the nucleophilicity of pyridine nitrogen atom and enables it to coordinate the second cation. In the absence of the thiophene ring, the ligand cannot coordinate doubly charged cations.","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"69 12","pages":"1860 - 1867"},"PeriodicalIF":1.8,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143554174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Crystal Structure of Intermetallics in Systems Pd–(Cu, Ag, Au)–(In, Sn) Pd - (Cu, Ag, Au) - (in, Sn)体系中金属间化合物的晶体结构

IF 1.8 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S0036023624602745

E. G. Kabanova, G. P. Zhmurko, A. S. Pavlenko, E. A. Ptashkina, M. A. Kareva, V. N. Kuznetsov

{"title":"Crystal Structure of Intermetallics in Systems Pd–(Cu, Ag, Au)–(In, Sn)","authors":"E. G. Kabanova, G. P. Zhmurko, A. S. Pavlenko, E. A. Ptashkina, M. A. Kareva, V. N. Kuznetsov","doi":"10.1134/S0036023624602745","DOIUrl":"10.1134/S0036023624602745","url":null,"abstract":"The crystal structure of the ternary intermetallic compounds τ1 in the Pd–(Cu, Ag, Au)–Sn systems has been determined. It has been found that in the silver and gold systems, these compounds crystallize in a body-centered tetragonal cell with atomic ordering corresponding to the Al3Ti structural type, whereas in the copper system, the τ1 phase adopts the VRh2Sn structure, which is an additionally ordered derivative of the Al3Ti type. The available literature data and the authors’ findings on the structures of binary and ternary compounds, which are ordered derivatives of the Cu-type structure, in Pd systems with Group 11 elements and non-transition metals In and Sn have been summarized and analyzed. It is shown that these compounds form at specific values of the electron concentration (e/a): compounds with AuCu or Al3Zr structural types at e/a = 0.75, with Al3Ti or VRh2Sn structural types at e/a = 0.8–1, and with the AuCu3 structural type at e/a = 1. The size factor influences the direction and extent of the phase homogeneity regions.","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"69 12","pages":"1806 - 1813"},"PeriodicalIF":1.8,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143554168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Synthesis of High Electroconductive ZnO/CNT Nanocomposites with Chemoresistive Response at Room Temperature 室温下具有化学电阻响应的高导电性ZnO/CNT纳米复合材料的合成

IF 1.8 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S0036023624602782

A. S. Mokrushin, S. A. Dmitrieva, I. A. Nagornov, N. P. Simonenko, A. M. Vorobei, A. A. Averin, E. P. Simonenko

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Chemical Precipitation of BaSn(OH)6 and Its Thermal Destruction in the Process of BaSnO3 Preparation BaSnO3制备过程中BaSn(OH)6的化学沉淀及其热破坏

IF 1.8 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S0036023624602940

T. L. Simonenko, N. P. Simonenko, R. A. Rebrov, E. P. Simonenko

{"title":"Chemical Precipitation of BaSn(OH)6 and Its Thermal Destruction in the Process of BaSnO3 Preparation","authors":"T. L. Simonenko, N. P. Simonenko, R. A. Rebrov, E. P. Simonenko","doi":"10.1134/S0036023624602940","DOIUrl":"10.1134/S0036023624602940","url":null,"abstract":"The synthesis of barium hexahydroxostannate BaSn(OH)6 and its thermal destruction leading to the barium stannate BaSnO3 have been studied. It is shown that the most intensive decomposition of BaSn(OH)6 occurs in the temperature range of 200–650°C. Crystallization of BaSnO3 proceeds in a narrow temperature range (650–675°C), and the maximum of the corresponding exo-effect is located at 667°C. It was found that at 500°C (within 60 min) BaSn(OH)6 completely decomposes with the formation of X-ray amorphous powder. When the material is kept at 600°C (60 min), crystallization of barium stannate BaSnO3 with perovskite structure takes place. The crystalline impurity of barium carbonate contained in the semiproduct is preserved up to 600°C, and at temperatures from 700°C the single-phase BaSnO3 is formed. The crystallization temperature of barium stannate can be reduced by 50–75°C due to thermal exposure of the powder for 40–60 min. Holding the semiproduct at 600°C for 60 min forms barium stannate with an average crystallite size of 21 ± 2 nm, and at 700°C there is a slight increase in this parameter (up to 22 ± 2 nm). With increasing temperature up to 1000°C there is intensification of crystallite enlargement process (up to 34 ± 3 nm). The obtained BaSnO3 powder, according to scanning electron microscopy data, consists of microrods (average length is about 85 μm; average diameter is about 10 μm). The surface of the rods is partially covered with spherical particles formed from smaller primary particles of about 30 nm in size.","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"69 12","pages":"1771 - 1778"},"PeriodicalIF":1.8,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Synthesis of Nb2AlC MAX Phase in KBr Protective Melt KBr保护熔体中Nb2AlC MAX相的合成

IF 1.8 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S0036023624602794

I. A. Nagornov, K. A. Barsukovsky, V. M. Sapronova, Ph. Y. Gorobtsov, A. S. Mokrushin, N. P. Simonenko, E. P. Simonenko, N. T. Kuznetsov

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Layered Europium and Yttrium Hydroxychlorides: Thermal Decomposition and Rehydration 层状铕和钇羟基氯化物：热分解和再水化

IF 1.8 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-12-16 DOI: 10.1134/S0036023624603106

M. A. Teplonogova, A. S. Kovalenko, A. D. Yapryntsev, N. P. Simonenko, A. A. Kozlova, A. E. Baranchikov, V. K. Ivanov

{"title":"Layered Europium and Yttrium Hydroxychlorides: Thermal Decomposition and Rehydration","authors":"M. A. Teplonogova, A. S. Kovalenko, A. D. Yapryntsev, N. P. Simonenko, A. A. Kozlova, A. E. Baranchikov, V. K. Ivanov","doi":"10.1134/S0036023624603106","DOIUrl":"10.1134/S0036023624603106","url":null,"abstract":"The dehydration–rehydration process of layered hydroxides is an example of a reversible chemical reaction involving rearrangement of the crystal structure. Products of thermal decomposition of layered rare earth hydroxides are known to react under certain conditions with aqueous salt solutions and restore their original layered structure. In the present work, the effect of the temperature and duration of thermal treatment of the layered rare earth hydroxychlorides at 100–1150°C on the reaction of the obtained products with aqueous sodium chloride solution was systematically studied for the first time. The main stages of the thermal decomposition of layered rare earth hydroxychlorides were determined by the thermogravimetric analysis. X-ray powder diffraction analysis and energy-dispersive X-ray spectroscopy were used to determine the phase and the chemical composition of the products of thermal treatment and subsequent rehydration of the layered hydroxides. It was shown that the presence of the rare earth oxychloride phase in the products of thermal decomposition was a critical factor for the recovery of the layered structure.","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"69 14","pages":"2074 - 2086"},"PeriodicalIF":1.8,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Hydrothermal Synthesis of Hierarchically Organized MoS2 and Formation of Films Based on It 水热合成层次化二硫化钼及其薄膜的制备

IF 1.8 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-12-16 DOI: 10.1134/S0036023624603039

T. L. Simonenko, N. P. Simonenko, A. A. Zemlyanukhin, Ph. Yu. Gorobtsov, E. P. Simonenko

{"title":"Hydrothermal Synthesis of Hierarchically Organized MoS2 and Formation of Films Based on It","authors":"T. L. Simonenko, N. P. Simonenko, A. A. Zemlyanukhin, Ph. Yu. Gorobtsov, E. P. Simonenko","doi":"10.1134/S0036023624603039","DOIUrl":"10.1134/S0036023624603039","url":null,"abstract":"The effect of hydrothermal synthesis parameters on the crystal structure and morphology of MoS2 particles has been shown. The results of synchronous thermal analysis showed that at the concentration of molybdenum cations of 0.05 mol/L, the increase in the duration of hydrothermal treatment leads to a decrease in the total mass loss (Δm), and the increase in c(Mo), on the contrary, results in a significant increase in the total Δm value. The dependence of the exo-effect maximum position, related to the MoS2 oxidation with the formation of MoO3, on the synthesis conditions has been determined. According to X-ray powder diffraction data, the 1T-MoS2 phase is formed at minimum c(Mo) and duration of heat treatment. Increasing the time duration leads to the transformation of 1T-phase into 2H-MoS2. With increasing c(Mo), the 2H-phase transforms to 1T-MoS2 and further to 1T/2H-MoS2. The transformation of MoS2 structure has been also analyzed by Raman spectroscopy. According to the results of scanning electron microscopy (SEM), all samples represent flower-like nanostructures consisting of twisted nanosheets. According to transmission electron microscopy data, individual nanosheets with a length of 50–500 nm are formed after delamination of molybdenum disulfide structures. The microstructure of the obtained MoS2 film has been studied by SEM and atomic force microscopy. Analysis of the film surface by Kelvin-probe force microscopy allows one to establish that the material has high electrical conductivity, and the work function value of the film surface has been calculated.","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"69 14","pages":"2087 - 2098"},"PeriodicalIF":1.8,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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