Russian Journal of Inorganic Chemistry最新文献_第2页

Solubility in System Sodium Chlorate Monocarbamide–Acetamide–Water

IF 1.8 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-12-23 DOI: 10.1134/S0036023624601995

S. A. Tuychiev, U. A. Madatov, A. S. Togasharov, B. S. Zakirov

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Structural Features of Mg-Containing Solid Solutions Based on Y2FeTaO7

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Russian Journal of Inorganic Chemistry Pub Date : 2024-12-23 DOI: 10.1134/S0036023624603234

A. V. Egorysheva, E. F. Popova, O. G. Ellert, E. V. Khramov, S. Y. Kottsov, E. S. Kulikova

{"title":"Structural Features of Mg-Containing Solid Solutions Based on Y2FeTaO7","authors":"A. V. Egorysheva, E. F. Popova, O. G. Ellert, E. V. Khramov, S. Y. Kottsov, E. S. Kulikova","doi":"10.1134/S0036023624603234","DOIUrl":"10.1134/S0036023624603234","url":null,"abstract":"The existence regions of the Y2–xMgxFeTaO7–δ (x = 0–0.15), Y2–xMgxFe1–x/2Ta1+x/2O7–δ (x = 0–0.15), Y2Fe1–xMgxTaO7–δ (x = 0–0.3), and Y2Fe1–3/2xMgxTa1+x/2O7–δ (x = 0–0.3) solid solutions were estimated. It was found that, regardless of the composition, the entry of Mg2+ into the crystal lattice of Y2FeTaO7 causes a similar distortion of the structure (space group R(bar {3}) → space group P3121). Based on XANES and Mössbauer spectroscopy data, it was suggested that Mg2+ ions occupied the eight-coordinated sites in the crystal lattice of solid solutions, displacing iron ions, while vacant yttrium sites in Y2–xMgxFeTaO7–δ and Y2–xMgxFe1–x/2Ta1+x/2O7–δ are occupied by tantalum ions. The XANES method confirmed the existence of Fe4+ ions in the Y2FeTaO7 solid solutions along with Fe3+. The simultaneous presence of the Ta4+ and Ta5+ ions ensures the electroneutrality of there crystal lattices. Herewith, the entry of Mg2+ does not lead to an increase in the Fe4+ concentration.","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"69 14","pages":"1995 - 2002"},"PeriodicalIF":1.8,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143554182","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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Microwave-Assisted Hydrothermal Synthesis of MnO/C Composite in the Presence of Ascorbic Acid

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Russian Journal of Inorganic Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S0036023624602903

G. S. Zakharova, Z. A. Fattakhova, A. A. Trofimov

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Derivation of a Force Field for Computer Simulations of Multi-Walled Nanotubes. II. Tungsten Diselenide

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Russian Journal of Inorganic Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S003602362460268X

A. V. Bandura, S. I. Lukyanov, A. V. Domnin, D. D. Kuruch, R. A. Evarestov

{"title":"Derivation of a Force Field for Computer Simulations of Multi-Walled Nanotubes. II. Tungsten Diselenide","authors":"A. V. Bandura, S. I. Lukyanov, A. V. Domnin, D. D. Kuruch, R. A. Evarestov","doi":"10.1134/S003602362460268X","DOIUrl":"10.1134/S003602362460268X","url":null,"abstract":"We propose a force field designed to model multi-walled WSe2 nanotubes whose size is beyond the capabilities of ab initio methods. The parameterization of interatomic potentials is successfully tested on single-walled and double-walled nanotubes, the structure of which is determined using non-empirical calculations. This force field has been used to model the structure and stability of chiral and achiral multi-walled WSe2 nanotubes with diameters approaching experimental values. The properties of WSe2-based nanotubes are compared with the properties of analogous WS2-based nanotubes calculated using the force field, which was published in the previous paper I of this series. The interwall distances obtained from the simulations are in good agreement with recent measurements of these parameters for existing WS2 and WSe2 nanotubes. It is found that the interwall interaction contributes to the stabilization of multi-walled nanotubes slightly more in the case of WSe2 than in the case of WS2. Analysis of the deviation of the nanotube shape from the cylindrical one showed a close similarity of the structure of the tubes of both compositions.","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"69 12","pages":"1884 - 1894"},"PeriodicalIF":1.8,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553751","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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Influence of Heat Treatment Conditions on the Production of Ultrafine Erbium Iron Garnet Powders Using Anion Exchange Resin Assisted Precipitation

IF 1.8 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S0036023624601673

S. V. Saikova, E. A. Kirshneva, N. P. Fadeeva, O. A. Bayukov, Yu. V. Knyazev, M. N. Volochaev, A. S. Samoilo

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Structure and Relative Stability of Isomers of Rhenium and Molybdenum Oxo- and Oxohydroxoalkoxo Derivatives RexMo4–xO6–n(ОН)n(OMe)10 (х = 0–4, n = 1, 2, 4)

IF 1.8 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S0036023624602976

E. G. Il’in, V. G. Yarzhemsky, I. I. Bannykh, A. S. Parshakov

{"title":"Structure and Relative Stability of Isomers of Rhenium and Molybdenum Oxo- and Oxohydroxoalkoxo Derivatives RexMo4–xO6–n(ОН)n(OMe)10 (х = 0–4, n = 1, 2, 4)","authors":"E. G. Il’in, V. G. Yarzhemsky, I. I. Bannykh, A. S. Parshakov","doi":"10.1134/S0036023624602976","DOIUrl":"10.1134/S0036023624602976","url":null,"abstract":"Quantum chemical methods have been used to calculate heteronuclear rhenium and molybdenum oxo-alkoxo complexes (RexMo4–xO6(OMe)10) and oxohydroxoalkoxo complexes (RexMo4–xO6–n(ОН)n(OMe)10, n = 1, 2, 4). The core of the clusters is a rhombus composed of four metal atoms connected by bridging oxygen atoms along the sides and the short diagonal. Alkoxo groups occupy terminal positions. The structure and relative stability of the isomers corresponding to different positions of the heterometal atoms at the vertices of the rhombus have been calculated. The theoretical differences in total energies relative to the most stable isomer, the metal-metal bond lengths, bond order indices and the sum of these indices for each isomer have been determined. It has been found that in some cases, along with the bridging M–O–M' bonds, direct metal-metal bonds are also formed.","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"69 12","pages":"1868 - 1876"},"PeriodicalIF":1.8,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143554173","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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Stable Hexatope LiF–LiCl–LiBr–Li2CrO4–KCl–KBr of the Li+,K+||F–,Cl–,Br–,({text{CrO}}_{4}^{{2 - }}) Reciprocal Quinary System

IF 1.8 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S003602362470061X

A. S. Egorova, M. A. Sukharenko, I. M. Kondratyuk, I. K. Garkushin

{"title":"Stable Hexatope LiF–LiCl–LiBr–Li2CrO4–KCl–KBr of the Li+,K+||F–,Cl–,Br–,({text{CrO}}_{4}^{{2 - }}) Reciprocal Quinary System","authors":"A. S. Egorova, M. A. Sukharenko, I. M. Kondratyuk, I. K. Garkushin","doi":"10.1134/S003602362470061X","DOIUrl":"10.1134/S003602362470061X","url":null,"abstract":"This paper presents a theoretical and experimental study of the Li+,K+||F–,Cl–,Br–,({text{CrO}}_{4}^{{2 - }}) quinary reciprocal system. А phase tree of the system was constructed. It has a branched structure and includes two stable pentatopes, a stable hexatope, and a stable tetrahedron separated by two stable tetrahedra and a secant triangle. The LiF–LiCl–LiBr–Li2CrO4–KCl–KBr hexatope was studied experimentally by differential thermal analysis (DTA) and X-ray powder diffraction analysis (XRD). The polythermal section passing through two low–melting quaternary eutectic points included in the boundary elements of the hexatope was studied to determine the nature of physical and chemical interactions in the hexatope. Solid solutions based on lithium and potassium chlorides and lithium and potassium bromides were found to not decompose within the hexatope. The characteristics of the composition at the minimum point in the hexatope were determined. There are four crystallizing phases in the stable hexatope: LiF, Li2CrO4, LiClxBr1‑x, and KClxBr1–x.","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"69 12","pages":"1895 - 1901"},"PeriodicalIF":1.8,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553753","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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Correlation between the Electrical Properties and Structural and Morphological Characteristics of Samples in the Ba2In2O5–Ba2InNbO6 Quasi-Binary Eutectic System

IF 1.8 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S0036023624602897

E. S. Matveev, N. A. Kochetova, I. V. Alyabysheva, I. E. Animitsa

{"title":"Correlation between the Electrical Properties and Structural and Morphological Characteristics of Samples in the Ba2In2O5–Ba2InNbO6 Quasi-Binary Eutectic System","authors":"E. S. Matveev, N. A. Kochetova, I. V. Alyabysheva, I. E. Animitsa","doi":"10.1134/S0036023624602897","DOIUrl":"10.1134/S0036023624602897","url":null,"abstract":"The structural and morphological properties of samples in the Ba2In2O5–Ba2InNbO6 eutectic system were studied when treated below and above the eutectic temperature. A narrow-extent Ba2In2-xNbxO5+x (х ≤ 0.05) solid solution and (1 − y)Ba2In1.95Nb0.05O5.05∙yBa2InNbO6 composites were found in the system. In the y ≥ 0.15 composites, the major phase is a stabilized structure with a disordered arrangement of oxygen vacancies. The total electrical conductivity in dry air is determined primarily by oxygen-ion transfer, and it increases for both the solid solution and the composites; the greatest increase of about two orders of magnitude is in the y = 0.15 and 0.25 composite samples treated at above-eutectic temperature. The increase in electrical conductivity is due to the combined influence of structural and morphological factors. The composites treated at above-eutectic temperature have a specific morphology. A layer of submicron-sized crystallites is formed on the surface of the grains of the major phase upon eutectic crystallization, which is responsible for the appearance of the composite electrical conductivity effect.","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"69 12","pages":"1912 - 1922"},"PeriodicalIF":1.8,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553754","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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Syntheses, Crystal Structures, and Dipole Moments of Zinc Halide Complexes with Methylurea and Dimethylacetamide

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Russian Journal of Inorganic Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S0036023624602502

E. V. Savinkina, A. E. Gerusova, M. N. Davydova, M. S. Grigoriev, G. A. Buzanov

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Structure and Thermal Behavior of Potassium Oxofluorozirconate K2Zr3OF12

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Russian Journal of Inorganic Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S0036023624602800

E. I. Voit, N. A. Didenko

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