Russian Journal of Physical Chemistry A最新文献_第3页

Thermodynamic Study of Copper Antimonides by the EMF Method with the Cu4RbCl3I2 Solid Electrolyte 利用电磁场法和 Cu4RbCl3I2 固体电解质对锑化铜进行热力学研究

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-02-11 DOI: 10.1134/S0036024424702777

D. M. Babanly, A. R. Aghayeva, R. E. Mirzayev, L. F. Mashadiyeva, Ya. I. Djafarov

{"title":"Thermodynamic Study of Copper Antimonides by the EMF Method with the Cu4RbCl3I2 Solid Electrolyte","authors":"D. M. Babanly, A. R. Aghayeva, R. E. Mirzayev, L. F. Mashadiyeva, Ya. I. Djafarov","doi":"10.1134/S0036024424702777","DOIUrl":"10.1134/S0036024424702777","url":null,"abstract":"Copper antimonides and phases based on them are of great interest as environmentally friendly functional materials for potential application in various areas of industry and technology. Present work demonstrates the results of thermodynamic study of Cu4Sb and two polymorphic modifications of Cu2Sb by low temperature electromotive force method (EMF) with a Cu+ conducting solid electrolyte RbCu4Cl3I2 in 300–480 K temperatures range. Measurements were performed using equilibrium samples from the Cu2Sb + Sb and Cu4Sb + Cu2Sb phase regions of the system. Phase compositions of samples were controlled using the powder X-ray diffraction (PXRD) method. Partial molar thermodynamic functions of copper in alloys, as well as, thermodynamic functions of formation and the absolute entropies of the RT–Cu2Sb, HT–Cu2Sb, and Cu4Sb compounds were calculated. The enthalpy and entropy of the polymorph transition of Cu2Sb were calculated based on the EMF data. A comparative analysis of obtained results with literature data was performed.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"98 14","pages":"3266 - 3272"},"PeriodicalIF":0.7,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143388846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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New Photosensitizers Based on Glycosylated Derivatives of Cationic Porphyrins: Optical and Acid–Base Properties and Interaction with Three-Component Anionic Quantum Dots

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-02-11 DOI: 10.1134/S0036024424702844

O. M. Kulikova, V. B. Sheinin

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Equilibria and Rates of Formation of New Donor-Acceptor Systems Based on the Porphyrin Complex of Cobalt(II) and Fulleropyrrolidine

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-02-11 DOI: 10.1134/S0036024424702881

V. A. Mozgova, N. G. Bichan, E. N. Ovchenkova, E. V. Motorina, M. S. Gruzdev, T. N. Lomova

{"title":"Equilibria and Rates of Formation of New Donor-Acceptor Systems Based on the Porphyrin Complex of Cobalt(II) and Fulleropyrrolidine","authors":"V. A. Mozgova, N. G. Bichan, E. N. Ovchenkova, E. V. Motorina, M. S. Gruzdev, T. N. Lomova","doi":"10.1134/S0036024424702881","DOIUrl":"10.1134/S0036024424702881","url":null,"abstract":"Donor-acceptor systems containing metalloporphyrin as an electron-donor component exhibit the property of photoinduced electron transfer (PET), which makes them promising in obtaining materials for optoelectronics. In a search for new perspective systems with PET we have performed experimental studies of interactions between the newly synthesized (5,15-bis(4,6-dichloropyrimidin-5-yl)-10,20-bis(2,4,6-trimethylphenyl)porphinato)cobalt(II) (CoPCl4) and 1-methyl-2-(pyridin-4'-yl)-3,4-fullero[60]pyrrolidine (PyC60) in toluene at 298 K. The process parameters were obtained, and a complete kinetic description is presented. The process occurs stepwise as reversible and irreversible reactions and ends with the formation of the donor-acceptor triad (PyC60)2CoPCl4 via the formation of an intermediate product—the dyad (PyC60)CoPCl4. The composition and structure of the triad are substantiated using UV-visible, IR, and 1H NMR spectroscopy and MALDI-TOF mass spectrometry data. A comparative analysis was performed of the quantitative parameters of the (PyC60)2CoPCl4 formation reaction with those for structural analogs previously described in the literature; the formation constants of the triads were correlated with their structure, which is important for fine tuning of the properties of functional materials based on them.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"98 14","pages":"3347 - 3355"},"PeriodicalIF":0.7,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143388784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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Side Interactions in High-Temperature Mass Spectrometric Studies of Metal Oxides

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-02-11 DOI: 10.1134/S0036024424702832

N. A. Gribchenkova, A. S. Smirnov, A. S. Alikhanyan

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Thermodynamics of the Complexation of 1-Aza-18-Crown-6 with Ag+ Ions in H2O–DMSO Solvents

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-02-11 DOI: 10.1134/S0036024424702984

T. R. Usacheva, N. N. Kuranova, E. V. Saturina, K. E. Suchkova, V. S. Sergeeva

{"title":"Thermodynamics of the Complexation of 1-Aza-18-Crown-6 with Ag+ Ions in H2O–DMSO Solvents","authors":"T. R. Usacheva, N. N. Kuranova, E. V. Saturina, K. E. Suchkova, V. S. Sergeeva","doi":"10.1134/S0036024424702984","DOIUrl":"10.1134/S0036024424702984","url":null,"abstract":"Thermodynamic parameters of the formation of a silver(I) complex with 1-aza-18-crown-6 in mixed water–dimethyl sulfoxide solvents are determined calorimetrically at 298.15 K ((log K), ∆rG°, ∆rH°, ∆rS°). The dependence of the constant of stability on the composition of the solvent is nonlinear, and the maximum stability of a complex particle is observed in a mixed solvent with x(DMSO) = 0.2 mol fraction (50 vol %). The exothermicity of complex formation grows monotonically upon raising the content of DMSO in the solvent. The solvation contributions from reagents to the change in the enthalpy of complex formation is analyzed from the viewpoint of the solvation–thermodynamic approach, along with the change in the stability of the complex upon moving from water to dimethyl sulfoxide. The thermodynamic parameters of the formation of a complex of silver(I) with 1-aza-18-crown-6 obtained in this work are compared to literature data for the complexation of silver(I) with crown ether 18-crown-6 and cryptands.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"98 14","pages":"3421 - 3428"},"PeriodicalIF":0.7,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143388809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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Hydrogels Based on Pluronic F127 As Nicotinic Acid and Nicotinamide Delivery Systems

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-02-11 DOI: 10.1134/S0036024424702753

M. A. Agafonov, S. O. Kustov, M. G. Nikitina, I. V. Terekhova

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Conformational Equilibria of Bicalutamide: A Study Based on One-Dimensional Selective Nuclear Overhauser Effect Experiments

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-02-11 DOI: 10.1134/S0036024424703138

A. A. Mololina, V. V. Sobornova, M. A. Krestyaninov, K. V. Belov, I. A. Khodov

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Experimental Determination of the Enthalpy of Combustion of Ionic Liquids 离子液体燃烧焓的实验测定

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-02-11 DOI: 10.1134/S0036024424702765

Yu. M. Artemkina, S. V. Pavlova, N. V. Plechkova, V. V. Shcherbakov

{"title":"Experimental Determination of the Enthalpy of Combustion of Ionic Liquids","authors":"Yu. M. Artemkina, S. V. Pavlova, N. V. Plechkova, V. V. Shcherbakov","doi":"10.1134/S0036024424702765","DOIUrl":"10.1134/S0036024424702765","url":null,"abstract":"A way of processing thermochemical measurements is analyzed in respect to determining the enthalpies of combustion and the formation of ionic liquids (ILs). It is shown that the error in the difference between the heat of combustion of an IL in a polyethylene ampoule and that of polyethylene is ignored, and the error in the difference between the sum of the enthalpies of the formation of combustion products and the combustion of the IL is not considered when calculating the enthalpies of formation. It is proposed that the linear dependence of the heat of combustion on the mass of a sample passing through the origin of coordinates be used to increase the accuracy of calculating an IL’s heat of combustion. The heats of combustion of polyethylene ampoules and three ionic liquids are measured: trihexyltetradecylphosphonium bromide ([P66614]Br), butyltrimethylammonium bis(trifluoromethylsulfonyl)imide ([N4111][NTf2]), and 1-butyl-4-methylpyridinium tetrafluoroborate ([BMPy][BF4]). A linear dependence of the heat of combustion on the mass of a sample is established and used to determine the standard enthalpies of combustion of the studied ILs. It is shown that the error in determining an IL’s heat of combustion grows as the mass of a sample shrinks, and the specific heat of combustion falls due to a reduction in the difference between the specific heats of combustion in a polyethylene ampoule and the ampoule itself.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"98 14","pages":"3257 - 3265"},"PeriodicalIF":0.7,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143388847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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The Influence of Polybutylene Terephthalate Cross-Linking on Infrared Spectra 聚对苯二甲酸丁二醇酯交联对红外光谱的影响

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-02-11 DOI: 10.1134/S0036024424702741

A. Abdullin, D. Faizullin, Y. Zuev, I. Sedov

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Description of an n-Alkane/Water Phase Boundary in Presence of Polyethylene Glycol Ethers of Fatty Alcohols with the Aid of Coarse-Grained Multilayer Quasi-Chemical Model and Molecular Dynamics

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-02-11 DOI: 10.1134/S0036024424702959

P. O. Sorina, M. A. Zolenko, A. A. Vanin, A. I. Victorov

{"title":"Description of an n-Alkane/Water Phase Boundary in Presence of Polyethylene Glycol Ethers of Fatty Alcohols with the Aid of Coarse-Grained Multilayer Quasi-Chemical Model and Molecular Dynamics","authors":"P. O. Sorina, M. A. Zolenko, A. A. Vanin, A. I. Victorov","doi":"10.1134/S0036024424702959","DOIUrl":"10.1134/S0036024424702959","url":null,"abstract":"Liquid interfaces are modeled for n-alkane + water systems with an without added non-ionic surfactants: polyethylene glycol ethers of fatty alcohols (CnEm). Coarse-grained molecular dynamic (MD) simulation with the MARTINI force field is combined with a coarse-grained version of a multilayer quasi-chemical model (MQM) of a non-uniform fluid mixture. The effect the choice of the monomer’s unit size has on predicting the interfacial tension and mutual solubility of n-alkanes and water is demonstrated using the MQM. The interfacial tension’s dependence on the length of the n-alkane chain and the structure of the added surfactant molecule are predicted satisfactorily. A predicted drop in the interfacial tension upon adsorption of the surfactant is consistent with the MD data. Liquid-liquid phase diagrams are calculated, and the non-uniform of the surfactant between the hydrocarbon and aqueous phases is described, depending on the ratio of the hydrophobic and hydrophilic parts of the CnEm molecule. The coarse-grained MQM is used to obtain normal and tangental pressure profiles and data on the local structure for flat and spherical phase boundaries. A conclusion is reached on the limited applicability of the coarse-grained approach within the MQM.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"98 14","pages":"3394 - 3403"},"PeriodicalIF":0.7,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143388808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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