Russian Journal of Inorganic Chemistry最新文献

{"title":"Role of Pyrophosphate Source for Improving Proton Conductivity and Stability of Sodium Dihydrogen Phosphate","authors":"Pushpanjali Singh, Amit K. Sharma, Pawan Kumar, Dharm Veer, Devendra Kumar, Deshraj Singh, Ram S. Katiyar","doi":"10.1134/s0036023624601338","DOIUrl":"https://doi.org/10.1134/s0036023624601338","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Solid acid composites of (1 – <i>x</i>)NaH₂PO₄/<i>x</i>CeP₂O₇ (<i>x</i> = 0.1–0.4) with different molar weight ratio of NaH₂PO₄ (SDP) and CeP₂O₇ were synthesized and characterized. The characterization of solid acid composites was carried out to determine the structures, thermal stability, and conductivity, utilizing X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FE-SEM) with energy dispersive X-ray analysis (EDX), thermogravimetric analysis (TGA), differential thermal analysis (DTA), and conductivity measurements. The electrolyte pellets of composite powder were prepared for the determination of ionic conductivity. The presence of CeP₂O₇ in the composite had a large impact on the conductivity measurements and increased the ionic conductivity of NaH₂PO₄. The thermal stability of the solid acid composites for dehydration, melting, and decomposition was investigated in the temperature range of 50 to 500°C under open atmospheric environments.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201208","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}

{"title":"Investigation of Oxidative Behaviour and Structural Insights of (3,4,5-Trimethoxyphenyl)Porphyrin Ni(II) Complex: Experimental and Theoretical Study","authors":"I. U. Muzaddadi, A. Murugan, M. Hemamalini, M. N. Tahir, N. Raman, B. Bezbaruah, B. Ahmed, A. Manohar, A. Kulandaisamy, M. F. Hussain, T. Rajkumar","doi":"10.1134/s0036023624601521","DOIUrl":"https://doi.org/10.1134/s0036023624601521","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p><i>Meso</i> 5,10,15,20-tetrakis(3,4,5-trimethoxyphenyl)porphyrin [H₂T(3,4,5-OCH₃)PP] and its Ni complex [T(3,4,5-OCH₃)PP Ni] (complex <b>1</b>) have been prepared. Its oxidation characteristics were examined using diverse analytical techniques, such as UV-visible spectrophotometry (UV-Vis), electron paramagnetic resonance (EPR), cyclic voltammetry (CV), and nuclear magnetic resonance (NMR) with antimony pentachloride (SbCl₅) or trifluoroacetic acid (TFA). The structure of the titled compound has been confirmed by single-crystal analysis. Cyclic voltammetry study of complex <b>1</b> provides that Ni^II is converted to Ni^III porphyrin through π-cation radical formation which is further EPR supported by IR spectrum peaks at 1276 cm^–1 with the addition of SbCl₅. The confirmation of formation of the π-cation radical has been established by the emergence of a novel peak at 649.5 nm in the UV-visible spectrum. This peak, indicative of oxidation, was observed at the central Ni ion, distinguishing it from the porphyrin macrocycle. Additionally, the EPR spectrum informed the formation of Ni(III) from Ni(II) porphyrin which is oxidized with SbCl₅ or CF₃COOH (TFA) as <span>(d_{z}^{2})</span> orbital has a single electron with high spin, <i>S</i> = 3/2 ground state in complex <b>1</b>. Crystallographic analysis and Hirshfeld surface analysis, show hydrogen bonding and molecular packing in the crystal lattice. DFT calculation and experimental HOMO–LUMO gap in solvent closely align with the theoretically determined HOMO–LUMO energy difference (0.92 eV) for complex <b>1</b>.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201207","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}

{"title":"Di- and Octanuclear 1,2-Dimethylpyridinium and 3-Bromo-1-Ethylpyridinium Iodoantimonates(III): Crystal Structure and Physicochemical Properties","authors":"I. A. Shentseva, K. A. Tagiltsev, A. N. Usol’tsev, N. A. Korobeynikov, V. R. Shayapov, M. N. Sokolov, S. A. Adonin","doi":"10.1134/s0036023624601156","DOIUrl":"https://doi.org/10.1134/s0036023624601156","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>New antimony complexes, (3-Br-1-EtPy)₃[Sb₂I₉] (<b>1</b>) and (1,2-Me₂Py)₄[Sb₈I₂₈] (<b>2</b>) have been prepared by the reaction of SbI₃ with iodides of the corresponding cations in organic solvents. The features of the crystal structure of the compounds have been determined by X-ray diffraction. The complexes are thermally stable at least up to 200°C and have a band gap of ~2.2 eV.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201212","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}

{"title":"Hydrothermal Synthesis and Photocatalytic Properties of Iron-Doped Tungsten Oxide","authors":"G. S. Zakharova, N. V. Podval’naya, T. I. Gorbunova, M. G. Pervova, A. N. Enyashin","doi":"10.1134/s0036023624700554","DOIUrl":"https://doi.org/10.1134/s0036023624700554","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Hexagonal <i>h</i>-WO₃-based substitutional solid solutions of general formula <i>h-</i>W_1–<i>x</i>Fe_<i>x</i>O₃, where 0.01 ≤ <i>x</i> ≤ 0.06 were prepared by hydrothermal synthesis. The crystal lattice of the prepared <i>h-</i>W_1–<i>x</i>Fe_<i>x</i>O₃ compounds is stabilized by <span>({text{NH}}_{4}^{ + })</span> ions in hexagonal channels. Quantum-chemical calculations showed that dopant iron ions replace cations in the tungsten sublattice, and are not intercalated into lattice channels. The dopant is not an independent participant in reactions involving <i>h</i>-W_1–<i>x</i>Fe_<i>x</i>O₃, but only causes the reorganization of the near-Fermi states of the <i>h</i>-WO₃ matrix. The extent of the dopant homogeneity range of the solid solution is determined by the pH of the working solution. The <i>h</i>-W_0.94Fe_0.06O₃ prepared at pH 2.3 has the largest specific surface area, equal to 108 m²/g. Its photocatalytic activity in 1,2,4-trichlorobenzene (TCB) photodegradation is several times that of <i>m</i>-W_0.94Fe_0.06O₃.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201216","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}

{"title":"Features of Synthesis of InGaMgO4 from Nitrate-Organic Precursors and Study of Its Physical Properties","authors":"M. N. Smirnova, O. N. Kondrat’eva, G. E. Nikiforova, A. D. Yapryntsev, A. A. Averin, A. V. Khoroshilov","doi":"10.1134/s003602362460117x","DOIUrl":"https://doi.org/10.1134/s003602362460117x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This work reports on the possibility of producing oxide InGaMgO₄ by two-stage heat treatment of glycine-, starch- and PVA-nitrate precursors. The products formed as a result of their heating at low temperatures (≈ 90°С) were studied by powder X-ray diffraction. It was found that the powder formed from the glycine-nitrate precursor contains nanocrystalline In₂O₃, and drying of the polymer-nitrate compositions leads to the production of a thermally stable X-ray amorphous product. Its annealing at temperatures above 800°C allows synthesizing powder InGaMgO₄ free of impurity phases. High-temperature treatment of the powder formed from the glycine-nitrate precursor also leads to the production of InGaMgO₄, but does not remove the In₂O₃ impurity. Using scanning electron microscopy, it was found that single-phase InGaMgO₄ powders synthesized from polymer-nitrate precursors have a similar grain structure but differ in grain size distribution. Presumably, this difference is due to the structural features of starch and PVA macromolecules used for the preparation of precursors. Oxide InGaMgO₄ was characterized using differential scanning calorimetry, Raman and diffuse reflectance spectroscopy. The value of its band gap energy <i>E</i>_<i>g</i> was determined using the Tauc method.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201211","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}

{"title":"Subsolidus Phase Equilibria in the La2O3–(Ni/Со)O–Sb2O5 Systems","authors":"A. V. Egorysheva, S. V. Golodukhina, K. R. Plukchi, L. S. Razvorotneva, A. V. Khoroshilov, O. G. Ellert","doi":"10.1134/s0036023624601107","DOIUrl":"https://doi.org/10.1134/s0036023624601107","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Subsolidus phase equilibria in the La₂O₃–(Ni/Со)O–Sb₂O₅ systems have been studied. A previously unknown compound La₄Sb₂O₁₁ was found to exist in the La₂O₃–Sb₂O₅ system. La₄Sb₂O₁₁ has been shown to decompose at 1060°C to form La₃SbO₇ and LaSbO₄. Two ternary oxides (LaNi₂SbO₆ and La₂NiSb₂O₉) have been discovered in the La₂O₃–NiO–Sb₂O₅ system. These new compounds are stable and do not undergo polymorphic transformations throughout the range of temperatures studied (25–1350°C). The existence of previously known ternary oxides, namely perovskite La₃Ni₂SbO₉ and rosiaite LaNi_1/3Sb_5/3O₆, has been verified. In the La₂O₃–CoO–Sb₂O₅ system, two new compounds (LaCo₂SbO₆ and La₂CoSb₂O₉) have been found along with previously known perovskite La₃Co₂SbO₉, rosiaite LaCo_1/3Sb_5/3O₆, and rhombohedral pyrochlore La₃Co₂Sb₃O₁₄. These new compounds are isostructural to those found in the nickel oxide system. La₂CoSb₂O₉, unlike its nickel analogue, decomposes at 990°C. For LaCo₂SbO₆, no thermal events associated with polymorphic transitions or melting have been detected on DSC curves up to 1350°C. An inspection of diffuse reflectance spectra of the newly synthesized LaNi₂SbO₆, La₂NiSb₂O₉, LaCo₂SbO₆, and La₂CoSb₂O₉ phases showed that the oxidation state of nickel and cobalt in them is 2+. The 1050°C isothermal sections of La₂O₃–(Ni/Co)O–Sb₂O₅ systems have been constructed.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201209","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}

{"title":"Dispersed Metal Alloys: Synthesis Methods and Catalytic Properties (A Review)","authors":"Yu. V. Rudneva, S. V. Korenev","doi":"10.1134/s003602362460134x","DOIUrl":"https://doi.org/10.1134/s003602362460134x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The review is devoted to dispersed powdery porous (including supported) double and ternary metal alloys. Various approaches to the synthesis of these alloys, as well as modern areas of their practical application, are considered. An analysis of the relevance of the study of highly dispersed alloys and the feasibility of developing new methods for their production is presented.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201210","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}

{"title":"Effect of Ionic Liquid on the Extraction of Actinides and Lanthanides(III) with Phosphorylureas from Nitric Acid Solutions","authors":"A. N. Turanov, V. K. Karandashev, E. I. Goryunov, I. B. Goryunova, V. K. Brel","doi":"10.1134/s0036023624601533","DOIUrl":"https://doi.org/10.1134/s0036023624601533","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Effect of ionic liquid 1-butyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide on the extraction of U(VI), Th(IV), and lanthanides(III) from nitric acid solutions with phosphorylureas RR'P(O)NHC(O)NHC₈H₁₇-<i>n</i> that differ in the nature of substituents at the phosphorus atom has been studied. A considerable synergistic effect has been revealed on the extraction of metal ions in the presence of the ionic liquid in organic phase. The stoichiometry of extracted complexes has been determined. The influence of extractant structure, organic diluent nature, and HNO₃ concentration in aqueous phase on the efficiency of metal ions extraction into organic phase has been considered.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201215","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}

{"title":"Thermodynamic Properties of Lutetium Stannate Lu2Sn2O7 in the Temperature Range of 0–1871 K","authors":"M. A. Ryumin, A. V. Tyurin, A. V. Khoroshilov, G. E. Nikiforova, K. S. Gavrichev","doi":"10.1134/s0036023624601132","DOIUrl":"https://doi.org/10.1134/s0036023624601132","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Lutetium stannate with a pyrochlore structure was synthesized using solid state reaction. The heat capacity of polycrystalline Lu₂Sn₂O₇ in the temperature range of 7.99–1871 K was measured by adiabatic and differential scanning calorimetry methods. Entropy, enthalpy change, and derived Gibbs energy were calculated from the smoothed heat capacity data. The Gibbs free energy of Lutetium stannate from elements was estimated, using the Δ_<i>f</i><i>S</i>°(<i>Т</i>) values obtained in this work and the Δ_<i>f</i><i>H</i>°(<i>Т</i>) values known from the literature. The temperature dependence of the cubic crystal lattice parameter and the value of the coefficient of thermal expansion in the temperature range of 300–1273 K were determined by high-temperature X-ray diffraction.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142225734","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}

{"title":"Synthesis, Crystal Structure, and Magnetic Properties of Y3–xCex(Fe0.5Ga0.5)5O12 (х = 0, 0.5)","authors":"E. S. Romanova, M. N. Smirnova, G. E. Nikiforova, V. A. Ketsko, K. I. Yanushkevich","doi":"10.1134/s0036023624601041","DOIUrl":"https://doi.org/10.1134/s0036023624601041","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The specific magnetization and magnetic susceptibility of ferrogarnets of the composition Y_3–<i>x</i>Ce_<i>x</i>(Fe_0.5Ga_0.5)₅O₁₂ (<i>x</i> = 0; 0.5) obtained by the gel combustion method have been measured. It has been found that after synthesis and subsequent crystallization at pressure ≈ 10^–2 Pa at 1023 K for 2 h, the temperature of magnetic phase transformation in the studied compositions Y_3–<i>x</i>Ce_<i>x</i>(Fe_0.5Ga_0.5)₅O₁₂ increases with the replacement of yttrium ions Y³⁺ by Ce³⁺. In this case, the effective Curie–Weiss temperature Ɵ_eff of the antiferromagnetic component of exchange magnetic interactions in Y_2.5Сe_0.5Fe_2.5Ga_0.5O₁₂ varies from |–570| to |–650| K.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201218","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}