Russian Journal of Inorganic Chemistry最新文献

{"title":"Synthesis, Crystal Structure, and Thermodynamic Properties of Ca3Y2Ge3O12","authors":"L. T. Denisova, D. V. Belokopytova, Yu. F. Kargin, G. V. Vasil’ev, V. M. Denisov, V. V. Beletskii","doi":"10.1134/s0036023624700578","DOIUrl":"https://doi.org/10.1134/s0036023624700578","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Orthogermanate Ca₃Y₂Ge₃O₁₂ has been prepared via firing solid CaCO₃, Y₂O₃, and GeO₂ in air at 1773 K. Its X-ray diffraction crystal structure has been refined (space group <i>Ia</i><span>(bar {3})</span><i>d</i>, <i>a</i> = 12.80255(14) Å, <i>V</i> = 2098.34(7) ų). The heat capacity of the prepared germanate in the range 320–1000 K has been determined by differential scanning calorimetry (DSC), and the experimental data have been used to calculate the thermodynamic properties of Ca₃Y₂Ge₃O₁₂.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"15 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251741","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":"Bi2O3-Doped Bioglass 45S5 for Medical Use","authors":"D. N. Grishchenko, M. A. Medkov","doi":"10.1134/s003602362460179x","DOIUrl":"https://doi.org/10.1134/s003602362460179x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Bioglass 45S5 was doped with bismuth oxide in concentrations up to 40 wt %. The amorphism of the synthesized glasses was confirmed by X-ray powder diffraction. The influence of Bi₂O₃ on the properties of the bioactive glass was studied. In a series of samples containing 0 to 40 wt % bismuth oxide, the glass characteristics change as follows: pH in the model medium decreases from 7.84 to 7.46 upon glass leaching; radiopacity increases from 1150 HU to values above 11 000 HU; percent chemical degradation drops from 1.299% to 0.424%; bioactivity decreases in the range 0–10 wt % Bi₂O₃ and is absent in the range 20–40 wt % Bi₂O₃. The bioactive glasses containing up to 10 wt % Bi₂O₃ can find application in reconstructive surgery. They have radiopaque and bioactive properties. The bioactive glasses containing 20–40 wt % Bi₂O₃ have high radiopacity and chemical durability, and only weakly affect pH when dissolved. They may be candidate radiomodifier materials for the radiation therapy of malignant neoplasms.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"180 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251742","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":"Preparation and Chemosensory Properties of Nanocomposite Obtained by Hydrothermal Modification of Ti2CTx with Hierarchically Organized Co(CO3)0.5(OH)⋅0.11H2O","authors":"E. P. Simonenko, A. S. Mokrushin, I. A. Nagornov, S. A. Dmitrieva, T. L. Simonenko, N. P. Simonenko, N. T. Kuznetsov","doi":"10.1134/s0036023624601715","DOIUrl":"https://doi.org/10.1134/s0036023624601715","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The process of modification Ti₂CT_<i>x</i> MXene multilayer by hydrothermal synthesis of bulk hierarchically organized formations of Co(CO₃)_0.5(OH)⋅0.11H₂O has been studied. It is shown that under the chosen conditions the MXene is partially oxidized to form aggregates of titanium dioxide nanoparticles with a diameter of ~3–10 nm on its surface. The sensing properties of the obtained composite material at room temperature and relative humidity 65 ± 3% to a wide range of gaseous analytes (50 ppm CO, benzene, acetone, ethanol, 2500 ppm H₂, CH₄, 5% O₂, and 40 ppm NH₃, NO₂) have been investigated. Increased sensitivity has been found for the detection of 40 ppm NH₃ and NO₂: the responses have been found to be 91 and 63%, respectively. Some aspects of the detection mechanism are discussed. The results obtained show promising modification of multilayer MXene with semiconducting metal oxides and hierarchically formed bulk formations in order to improve its chemoresistive properties.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"209 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251748","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":"Luminescence Features of Multicomponent Cubic Fluoride Pyrochlores Doped with Europium Ions","authors":"N. M. Khaidukov, M. N. Brekhovskikh, N. Yu. Kirikova, V. A. Kondratyuk, V. N. Makhov","doi":"10.1134/s0036023624602034","DOIUrl":"https://doi.org/10.1134/s0036023624602034","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Ceramic samples of europium-doped multi-component fluorides Na₃CaMg₃AlF₁₄ and NaCaMg₂F₇ were prepared by high-temperature solid-phase reactions. The prepared compounds both have cubic pyrochlore structures. A comparison of the X-ray diffraction patterns for the prepared compounds confirms that Na₃CaMg₃AlF₁₄ was prepared as a new polymorph with a cubic pyrochlore structure, which differs from its rhombohedral phase described in the literature. The addition of NH₄(HF₂) before the last annealing provided reducing conditions for the stabilization of europium ions exclusively in the 2+ charge state. The Eu²⁺ ions in the synthesized fluoride matrices luminesce with a band peaking at about 395 nm due to 4<i>f</i> ⁶5<i>d</i>–4<i>f</i> ⁷ interconfiguration transitions. The Eu²⁺ ions doped into these matrices form predominantly a single type of optical center, which provides for a fairly narrow width (FWHM ~ 30 nm) of the 4<i>f</i> ⁶5<i>d</i>–4<i>f</i> ⁷ emission band. Also, the Eu²⁺ ions in the prepared ceramics emit narrow-line luminescence with the major line at about 362 nm, associated with 4<i>f</i> ⁷–4<i>f</i> ⁷ intraconfiguration transitions from the lowest excited state ⁶P_7/2 to the ground state ⁸S_7/2. The prepared ceramics exhibit a good thermal stability of 4<i>f</i> ⁶5<i>d</i>–4<i>f</i> ⁷ luminescence of Eu²⁺ with the thermal quenching temperature <i>T</i>_1/2 equal to 504 and 543 K for Na₃CaMg₃AlF₁₄:Eu²⁺ (1.0 at %) and NaCaMg₂F₇:Eu²⁺ (0.5 at %), respectively. This property may be of interest for the practical application of these phosphors. Additional annealing of the ceramics under an argon atmosphere with the addition of NaHF₂ instead of NH₄(HF₂) led to a partial conversion of europium ions from the divalent to trivalent state. As a result, a series of narrow luminescence lines appeared in the red region of the spectrum due to 4<i>f</i> ⁶–4<i>f</i> ⁶ (⁵D₀ → ⁷F_J) intraconfiguration transitions in Eu³⁺.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"75 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251737","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":"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":"7 1","pages":""},"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":"43 1","pages":""},"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":"5 1","pages":""},"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":"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":"8 1","pages":""},"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":"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":"6 1","pages":""},"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":"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":"15 1","pages":""},"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}