Russian Journal of Inorganic Chemistry最新文献

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Structural Organization and Thermal Behavior of Compounds Rb3(SbF3)(Zr2F11)·0.5H2O and Rb3(SbF3)(Zr2F11) Rb3(SbF3)(Zr2F11)-0.5H2O 和 Rb3(SbF3)(Zr2F11) 化合物的结构组织和热行为
IF 2.1 3区 化学
Russian Journal of Inorganic Chemistry Pub Date : 2024-09-15 DOI: 10.1134/s0036023624601648
A. V. Gerasimenko, T. F. Antokhina, N. N. Savchenko
{"title":"Structural Organization and Thermal Behavior of Compounds Rb3(SbF3)(Zr2F11)·0.5H2O and Rb3(SbF3)(Zr2F11)","authors":"A. V. Gerasimenko, T. F. Antokhina, N. N. Savchenko","doi":"10.1134/s0036023624601648","DOIUrl":"https://doi.org/10.1134/s0036023624601648","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Compound Rb<sub>3</sub>(SbF<sub>3</sub>)(Zr<sub>2</sub>F<sub>11</sub>)·0.5H<sub>2</sub>O and its dehydration product Rb<sub>3</sub>(SbF<sub>3</sub>)(Zr<sub>2</sub>F<sub>11</sub>) were synthesized and their structures were studied. It was found that compound Rb<sub>3</sub>(SbF<sub>3</sub>)(Zr<sub>2</sub>F<sub>11</sub>)·0.5H<sub>2</sub>O has a unique fluoride zirconate framework structure built of ring tetrameric fragments (Zr<sub>4</sub>F<sub>24</sub>) connected to each other at the vertices by bridging fluorine atoms. Inside the tetrameric fragments, ZrF<sub>8</sub> polyhedra are connected to each other along common edges. The zirconium framework [Zr<sub>2</sub>F<sub>11</sub>]<sup>3–</sup> is bound by Zr–F–Sb fluoride bridges from the second coordination sphere of antimony atoms. The structure of the dehydrated compound Rb<sub>3</sub>(SbF<sub>3</sub>)(Zr<sub>2</sub>F<sub>11</sub>) is a three-dimensional framework consisting of infinite chains of composition [Zr<sub>2</sub>F<sub>11</sub>]<sup>3–</sup>. The chains are formed by ZrF<sub>7</sub> polyhedra connected along edges and vertices and united with each other into a three-dimensional framework by fluoride bridges Zr–F–Sb from the second coordination sphere of antimony atoms. In Rb<sub>3</sub>(SbF<sub>3</sub>)(Zr<sub>2</sub>F<sub>11</sub>), in the temperature range 247–256 K, a reversible phase transition occurs from the partially disordered high-temperature phase α to the ordered low-temperature phase β. With the participation of fluorine atoms of the second coordination sphere and a lone pair of electrons around antimony atoms, coordination polyhedra are formed in the structures in the form of distorted (SbEF<sub>5</sub>) and single-capped (SbEF<sub>6</sub>) octahedra.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"3 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251747","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}
引用次数: 0
Synthesis and Thermodynamic Study of CaYb2Ge4O12 and CaLu2Ge4O12 Germanates in the Range 320–1050 K 320-1050 K 范围内 CaYb2Ge4O12 和 CaLu2Ge4O12 锗酸盐的合成与热力学研究
IF 2.1 3区 化学
Russian Journal of Inorganic Chemistry Pub Date : 2024-09-15 DOI: 10.1134/s0036023624601958
L. T. Denisova, D. V. Belokopytova, Yu. F. Kargin, G. V. Vasil’ev, N. V. Belousova, V. M. Denisov
{"title":"Synthesis and Thermodynamic Study of CaYb2Ge4O12 and CaLu2Ge4O12 Germanates in the Range 320–1050 K","authors":"L. T. Denisova, D. V. Belokopytova, Yu. F. Kargin, G. V. Vasil’ev, N. V. Belousova, V. M. Denisov","doi":"10.1134/s0036023624601958","DOIUrl":"https://doi.org/10.1134/s0036023624601958","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Germanates CaYb<sub>2</sub>Ge<sub>4</sub>O<sub>12</sub> and CaLu<sub>2</sub>Ge<sub>4</sub>O<sub>12</sub> have been prepared via firing the solid precursor oxides CaO, Yb<sub>2</sub>O<sub>3</sub> (Lu<sub>2</sub>O<sub>3</sub>), and GeO<sub>2</sub> in air at 1223–1423 K. The X-ray diffraction crystal structures of the prepared germanates have been determined. The high-temperature heat capacity in the range 320–1050 K has been measured by differential scanning calorimetry (DSC). The measured heat capacities are well fitted by the Maier–Kelley equation: <i>C</i><sub><i>p</i></sub>(CaYb<sub>2</sub>Ge<sub>4</sub>O<sub>12</sub>) = <span>(left( {{{416}}{{.4; pm ;0}}{{.40}}} right) + left( {{{72}}{{.67; pm ;2}}{{.30}}} right){{ times 1}}{{{{0}}}^{{{{-3}}}}}T - left( {{{50}}{{.13; pm ;0}}{{.19}}} right){{ times 1}}{{{{0}}}^{{{5}}}}{{T}^{{{{-2}}}}})</span>, and <i>C</i><sub><i>p</i></sub>(CaLu<sub>2</sub>Ge<sub>4</sub>O<sub>12</sub>) = <span>(left( {{{450}}{{.0; pm ;1}}{{.75}}} right) + left( {{{15}}{{.46; pm ;1}}{{.90}}} right){{ times 1}}{{{{0}}}^{{{{-3}}}}}T - left( {{{78}}{{.67; pm ;1}}{{.60}}} right){{ times 1}}{{{{0}}}^{{{5}}}}{{T}^{{{{-2}}}}})</span>. These results have been used to calculate selected thermodynamic properties of the prepared germanates.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"39 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251749","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}
引用次数: 0
New Double Complex Salts [M(im)n][RuNOCl5] (M = Ni, Cu): Synthesis, Structure, and Thermal Properties 新型双络合盐 [M(im)n][RuNOCl5](M = Ni、Cu):合成、结构和热性能
IF 2.1 3区 化学
Russian Journal of Inorganic Chemistry Pub Date : 2024-09-15 DOI: 10.1134/s003602362470058x
A. O. Borodin, E. Yu. Filatov, P. E. Plusnin, N. V. Kuratieva, S. V. Korenev, G. A. Kostin
{"title":"New Double Complex Salts [M(im)n][RuNOCl5] (M = Ni, Cu): Synthesis, Structure, and Thermal Properties","authors":"A. O. Borodin, E. Yu. Filatov, P. E. Plusnin, N. V. Kuratieva, S. V. Korenev, G. A. Kostin","doi":"10.1134/s003602362470058x","DOIUrl":"https://doi.org/10.1134/s003602362470058x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Procedures for the synthesis of new double complex salts [Cu(im)<sub>4</sub>][RuNOCl<sub>5</sub>], [Ni(im)<sub>6</sub>][RuNOCl<sub>5</sub>]·H<sub>2</sub>O, and <i>p</i>-[Ni(im)<sub>4</sub>(DMF)<sub>2</sub>][RuNOCl<sub>5</sub>] have been developed and their crystal structure have been determined. Thermal properties of the synthesized DCS have been studied under inert and reducing atmospheres using synchronous TG–DTA and ex situ XRD of intermediate and final thermolysis products. It has been found that thermal decomposition occurs in three stages. Thermolysis of [Cu(im)<sub>4</sub>][RuNOCl<sub>5</sub>] under inert and reducing atmospheres gives rise to the mixture of copper and ruthenium, while the thermal decomposition of [Ni(im)<sub>6</sub>][RuNOCl<sub>5</sub>]·H<sub>2</sub>O under an inert atmosphere results in a mixture of nickel and ruthenium. A supersaturated Ni<sub>0.27</sub>Ru<sub>0.73</sub> solid solution can be obtained in the nickel-ruthenium system upon thermolysis under a reducing atmosphere at temperature up to 400°C. Increase in thermolysis temperature up to 800°C leads to the partial decomposition of the solid solution.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"6 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251744","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}
引用次数: 0
Polyol Synthesis of Silver Nanowires and Their Application for Transparent Electrode Fabrication 多元醇合成银纳米线及其在透明电极制造中的应用
IF 2.1 3区 化学
Russian Journal of Inorganic Chemistry Pub Date : 2024-09-15 DOI: 10.1134/s0036023624601697
N. P. Simonenko, T. L. Simonenko, Ph. Yu. Gorobtsov, P. V. Arsenov, I. A. Volkov, E. P. Simonenko
{"title":"Polyol Synthesis of Silver Nanowires and Their Application for Transparent Electrode Fabrication","authors":"N. P. Simonenko, T. L. Simonenko, Ph. Yu. Gorobtsov, P. V. Arsenov, I. A. Volkov, E. P. Simonenko","doi":"10.1134/s0036023624601697","DOIUrl":"https://doi.org/10.1134/s0036023624601697","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Polyol synthesis of thin silver nanowires has been studied and their suitability for the formation of transparent electrodes has been shown. The influence of stepwise heating of the reaction system on the position and shape of the absorption band associated with the surface plasmon resonance of the formed silver nanostructures has been determined. Using X-ray powder diffraction analysis, it has been found that the material does not contain crystalline impurities and has a face-centered cubic lattice. According to the scanning and transmission electron microscopy data, the main fraction is represented by elongated nanostructures with 10–15 μm length (however, there are also structures with length up to 20 μm) characteristic for silver nanowires of the arc-shaped type. It is shown that the Ag nanowires obtained are quite thin (diameter is about 35–45 nm). In addition, some amount of microrods of 1–3 µm length is observed in the composition of the material, the diameter of which grows from 70 to 150 nm with decreasing length. In smaller quantities there is also an admixture of zero-dimensional particles, which are polyhedrons of various complexity. Atomic force microscopy has been used to study the surface of the film based on the obtained silver nanowires and the diameter of individual nanowire has been estimated. The optical properties and surface resistivity of the films based on the obtained silver nanowires have been examined. It has been found that the increase in transmittance at 550 nm from 73.9 to 90.3% is accompanied by an increase in the resistance value from 25 to 146 Ω/sq.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"16 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251745","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}
引用次数: 0
Spin Properties of Chiral SiC Nanotubes 手性碳化硅纳米管的自旋特性
IF 2.1 3区 化学
Russian Journal of Inorganic Chemistry Pub Date : 2024-09-15 DOI: 10.1134/s0036023624700566
P. N. D’yachkov, P. A. Kulyamin
{"title":"Spin Properties of Chiral SiC Nanotubes","authors":"P. N. D’yachkov, P. A. Kulyamin","doi":"10.1134/s0036023624700566","DOIUrl":"https://doi.org/10.1134/s0036023624700566","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The band structure of single-walled SiC (<i>n</i><sub>1</sub>, <i>n</i><sub>2</sub>) nanotubes (<i>n</i><sub>1</sub> = 7, 0 ≤ <i>n</i><sub>2</sub> ≤ 7) as a function of spin and chirality has been calculated by the relativistic augmented cylindrical wave method. It has been found that the nanotubes are wide-band semiconductors with <i>E</i><sub><i>g</i></sub> ranging from 2.26 to 3.15 eV, and the spin–orbit splitting of the valence and conduction band edges are in the range 0.05–3.5 meV. The spin–orbit gap energies in righthanded and lefthanded enantiomers coincide, but the spins are opposite. Chiral nanotubes most suitable for selective spin transport with potentially high fluxes of α- and β-electrons in opposite directions have been determined.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"54 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251746","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}
引用次数: 0
Chemosensory Properties of Nanocomposite Ti0.2V1.8CTx–V2O5–SnO2 纳米复合材料 Ti0.2V1.8CTx-V2O5-SnO2 的化学感应特性
IF 2.1 3区 化学
Russian Journal of Inorganic Chemistry Pub Date : 2024-09-15 DOI: 10.1134/s0036023624601703
E. P. Simonenko, A. S. Mokrushin, I. A. Nagornov, Yu. M. Gorban, T. L. Simonenko, N. P. Simonenko, N. T. Kuznetsov
{"title":"Chemosensory Properties of Nanocomposite Ti0.2V1.8CTx–V2O5–SnO2","authors":"E. P. Simonenko, A. S. Mokrushin, I. A. Nagornov, Yu. M. Gorban, T. L. Simonenko, N. P. Simonenko, N. T. Kuznetsov","doi":"10.1134/s0036023624601703","DOIUrl":"https://doi.org/10.1134/s0036023624601703","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The method of modification of accordion-like complex Ti<sub>0.2</sub>V<sub>1.8</sub>CT<sub><i>x</i></sub> MXene with tin(IV) and vanadium oxides was developed based on hydrothermal synthesis of SnO<sub>2</sub> in water-alcoholic medium in the presence of dispersed particles of two-dimensional vanadium-titanium carbide. Coating Ti<sub>0.2</sub>V<sub>1.8</sub>CT<sub><i>x</i></sub>-10 mol % SnO<sub>2</sub> was deposited by microplotter printing on a specialized substrate followed by heat treatment in air at 300°С for 1 h. For the formed nanocomposite layer Ti<sub>0.2</sub>V<sub>1.8</sub>CT<sub><i>x</i></sub>–V<sub>2</sub>O<sub>5</sub>–SnO<sub>2</sub>, chemosensor properties were comprehensively studied for a number of analyte gases, including 100 ppm CO, NH<sub>3</sub>, NO<sub>2</sub>, benzene, acetone, ethanol, 1000 ppm H<sub>2</sub>, methane, and 10% oxygen. High sensitivity and selectivity of the nanocomposite at operating temperatures of 150 and 200°С to nitrogen dioxide were shown, the responses to 100 ppm NO<sub>2</sub> were found to be 281 and 873%, respectively.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"39 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251750","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}
引用次数: 0
Carboxonium Derivatives of closo-Decaborate Anion [2,6-B10H8O2CC6H4R]– Based on Aromatic Carboxylic Acids: Synthesis and Physicochemical Properties 基于芳香族羧酸的闭癸酸阴离子[2,6-B10H8O2CC6H4R]-羧基衍生物:合成与理化性质
IF 2.1 3区 化学
Russian Journal of Inorganic Chemistry Pub Date : 2024-09-15 DOI: 10.1134/s003602362460148x
A. V. Kolbunova, I. N. Klyukin, A. S. Kubasov, N. A. Selivanov, A. Yu. Bykov, A. P. Zhdanov, K. Yu. Zhizhin, N. T. Kuznetsov
{"title":"Carboxonium Derivatives of closo-Decaborate Anion [2,6-B10H8O2CC6H4R]– Based on Aromatic Carboxylic Acids: Synthesis and Physicochemical Properties","authors":"A. V. Kolbunova, I. N. Klyukin, A. S. Kubasov, N. A. Selivanov, A. Yu. Bykov, A. P. Zhdanov, K. Yu. Zhizhin, N. T. Kuznetsov","doi":"10.1134/s003602362460148x","DOIUrl":"https://doi.org/10.1134/s003602362460148x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The series of carboxonium derivatives of the <i>closo</i>-decaborate anion of the general form [2,6-B<sub>10</sub>H<sub>8</sub>O<sub>2</sub>CC<sub>6</sub>H<sub>4</sub>R]<sup>–</sup>, where R = F, CH<sub>3</sub>, C<sub>3</sub>H<sub>7</sub>, and C<sub>6</sub>H<sub>5</sub>, were prepared. To obtain the target systems, the reaction between the [B<sub>10</sub>H<sub>11</sub>]<sup>–</sup> anion and aromatic carboxylic acids was used. This process took place in two stages through the formation of a monosubstituted derivative of the general form [2-B<sub>10</sub>H<sub>9</sub>OC(OH)C<sub>6</sub>H<sub>4</sub>R]<sup>–</sup>, where R = F, CH<sub>3</sub>, C<sub>3</sub>H<sub>7</sub>, and C<sub>6</sub>H<sub>5</sub>, followed by intramolecular cyclization, leading to the formation of the target disubstituted carboxonium derivatives. The structure of the [2,6-B<sub>10</sub>H<sub>8</sub>O<sub>2</sub>CC<sub>6</sub>H<sub>4</sub>-C<sub>6</sub>H<sub>5</sub>]<sup>–</sup> anion was determined by single-crystal X-ray diffraction. The resulting carboxonium derivatives are capable of protonation to form neutral systems of the general form [2,6-B<sub>10</sub>H<sub>8</sub>O<sub>2</sub>CC<sub>6</sub>H<sub>4</sub>R(H<sup>fac</sup>)]<sup>0</sup>, where R = F, CH<sub>3</sub>, C<sub>3</sub>H<sub>7</sub>, C<sub>6</sub>H<sub>5</sub>. When a protonated carboxonium derivative of acetonitrile is added to a solution, a trisubstituted derivative of the general form [B<sub>10</sub>H<sub>7</sub>O<sub>2</sub>CC<sub>6</sub>H<sub>4</sub>R(NCCH<sub>3</sub>)]<sup>0</sup> is formed.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"68 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251739","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}
引用次数: 0
Synthesis of Triethylammonium Salts of Amidine Derivatives of closo-Borate Anions [B10H10]2– and [B12H12]2– and Study of Their Cytotoxic Properties 闭合硼酸阴离子脒衍生物 [B10H10]2- 和 [B12H12]2- 的三乙基铵盐的合成及其细胞毒性研究
IF 2.1 3区 化学
Russian Journal of Inorganic Chemistry Pub Date : 2024-09-15 DOI: 10.1134/s0036023624601892
M. N. Ryabchikova, A. V. Nelyubin, I. N. Klyukin, N. Yu. Karpechenko, A. P. Zhdanov, K. Yu. Zhizhin, N. T. Kuznetsov
{"title":"Synthesis of Triethylammonium Salts of Amidine Derivatives of closo-Borate Anions [B10H10]2– and [B12H12]2– and Study of Their Cytotoxic Properties","authors":"M. N. Ryabchikova, A. V. Nelyubin, I. N. Klyukin, N. Yu. Karpechenko, A. P. Zhdanov, K. Yu. Zhizhin, N. T. Kuznetsov","doi":"10.1134/s0036023624601892","DOIUrl":"https://doi.org/10.1134/s0036023624601892","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A series of amidine derivatives of the <i>closo</i>-decaborate and <i>closo</i>-dodecaborate anions with triethylammonium cations were obtained. The structures of the compounds was determined by multinuclear NMR spectroscopy and ESI-mass spectrometry. Cytotoxicity of all compounds obtained was investigated by MTT method on four cell lines. It was shown that the nature of the cation does not affect the cytotoxicity of the substituted <i>closo</i>-borates discussed.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"4 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251743","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}
引用次数: 0
Synthesis and Thermodynamic Properties of Thulium Titanate 钛酸铥的合成与热力学性质
IF 2.1 3区 化学
Russian Journal of Inorganic Chemistry Pub Date : 2024-09-15 DOI: 10.1134/s0036023624602046
P. G. Gagarin, A. V. Guskov, V. N. Guskov, A. V. Khoroshilov, K. S. Gavrichev
{"title":"Synthesis and Thermodynamic Properties of Thulium Titanate","authors":"P. G. Gagarin, A. V. Guskov, V. N. Guskov, A. V. Khoroshilov, K. S. Gavrichev","doi":"10.1134/s0036023624602046","DOIUrl":"https://doi.org/10.1134/s0036023624602046","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The temperature stages of crystallization process for thulium titanate of pyrochlore structural type during the heating of hydroxide precursor obtained by reverse precipitation have been studied by DSC/TG, XRD, and electron microscopy. Tm<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> has been measured in the temperature range 2–1870 K and thermodynamic functions at 0–1900 K and the Gibbs energy of formation from oxides and elements have been calculated based on smoothed heat capacity. The contribution of the Schottky anomaly at 20–320 K into heat capacity has been revealed.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"39 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251738","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}
引用次数: 0
Isotope Effect in IR Spectra of Highly Enriched Amorphous Silicon Dioxide ASiO2 (A = 28, 29, 30) 高富集无定形二氧化硅 ASiO2(A = 28、29、30)红外光谱中的同位素效应
IF 2.1 3区 化学
Russian Journal of Inorganic Chemistry Pub Date : 2024-09-15 DOI: 10.1134/s0036023624601788
K. F. Shumovskaya, M. E. Komshina, M. V. Sukhanov, S. D. Plekhovich, A. D. Plekhovich, P. A. Otopkova, O. Yu. Troshin, A. D. Bulanov
{"title":"Isotope Effect in IR Spectra of Highly Enriched Amorphous Silicon Dioxide ASiO2 (A = 28, 29, 30)","authors":"K. F. Shumovskaya, M. E. Komshina, M. V. Sukhanov, S. D. Plekhovich, A. D. Plekhovich, P. A. Otopkova, O. Yu. Troshin, A. D. Bulanov","doi":"10.1134/s0036023624601788","DOIUrl":"https://doi.org/10.1134/s0036023624601788","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Samples of amorphous silicon dioxide have been synthesized from silicon with natural isotope abundance; silicon highly enriched in silicon-28, silicon-29, or silicon-30 with a degree of enrichment from 99.29 ± 0.01 to 99.9980 ± 0.0010 at %; and silicon being a mixture of silicon-28 and silicon-30. The samples were studied by IR spectroscopy. The IR spectra of the samples demonstrate a low-frequency shift of the known stretching and bending vibration absorption bands for the silicon-29 and silicon-30 isotopes by 0.1–30.1 cm<sup>–1</sup> compared to silicon-28. For the silicon dioxides containing a mixture of silicon-28 and silicon-30 isotopes and with natural isotope composition, there is a deviation from the linear dependence of the vibration frequency of monoisotopic samples. The positions of the absorption band maxima in the model IR spectrum of silicon dioxide have been calculated by the DFT method. The results obtained correlate with experimental data with high accuracy. The reduced mass and force constant of vibrating groups of atoms in silicon dioxide were determined, and the influence of these factors on the isotopic shift in the IR spectrum of silicon dioxide, depending on the type of vibration, was established.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"23 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251740","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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