Russian Chemical Bulletin最新文献

{"title":"Formation of long-prismatic TiO2 nanocrystals upon the calcination of a mixture of titanium peroxo complex and sodium chloride","authors":"A. B. Shishmakov,&nbsp;Y. V. Mikushina","doi":"10.1007/s11172-025-4546-1","DOIUrl":"10.1007/s11172-025-4546-1","url":null,"abstract":"<div><p>The formation of long-prismatic titanium dioxide nanocrystals was detected upon carrying out a five-steps process consisting of the reaction of tetrabutoxytitanium with hydrogen peroxide, mixing the reaction product with sodium chloride, drying, calcination at 700 °C, and washing the material from salt. The crystals were formed in microcavities of the TiO₂ crystallite aggregate. The crosswise size of crystals was 40–90 nm, while their length reached 300–700 nm. According to the X-ray phase analysis, the polycrystalline sample consisted of two phases: anatase (92 wt.%) and rutile (8 wt.%). The long-prismatic crystals were formed only upon using NaCl in the synthesis. If this salt was not used, the resulting sample contained 32 wt.% anatase and 68 wt.% rutile.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 2","pages":"529 - 533"},"PeriodicalIF":1.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716853","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}

{"title":"Oxirane-based synthesis of functionalized derivatives of 2-hydroxyalkyl-substituted organophosphorus acids","authors":"Yu. N. Bubnov,&nbsp;A. A. Prishchenko,&nbsp;M. V. Livantsov,&nbsp;O. P. Novikova,&nbsp;L. I. Livantsova,&nbsp;S. V. Baranin","doi":"10.1007/s11172-025-4541-6","DOIUrl":"10.1007/s11172-025-4541-6","url":null,"abstract":"<div><p>Convenient syntheses of functionalized 2-hydroxyalkyl-substituted organophosphorus acids and their derivatives based on nucleophilic addition of trimethylsilyl esters of tricoordinated phosphorus acids to functionalized oxiranes have been developed. 2-Trimethylsiloxyalkyl-substituted phosphonites are effective synthons for the production of new functionalized 2-hydroxyalkyl-substituted organophosphorus acids bearing amino, carboxy or sulfo groups. The resulting compounds are of interest as potential bioactive substances, promising extractants and polydentate ligands.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 2","pages":"489 - 502"},"PeriodicalIF":1.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716854","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}

{"title":"Scandium and neodymium dichloride complexes with Ph3EO ligands (E = C, Si): synthesis, structure, and catalytic activity in isoprene polymerization","authors":"A. O. Tolpygin,&nbsp;T. A. Kovylina,&nbsp;A. V. Cherkasov,&nbsp;G. K. Fukin,&nbsp;A. M. Ob’edkov,&nbsp;A. A. Trifonov","doi":"10.1007/s11172-025-4529-2","DOIUrl":"10.1007/s11172-025-4529-2","url":null,"abstract":"<div><p>The reaction of equimolar amounts of ScCl₃ and [Ph₃EOLi] (E = C, Si) afforded the monomeric dichloride complexes Ph₃EOScCl₂(THF)₃ (E = C (<b>1</b>), Si (<b>2</b>)) in 78 and 81% yields, respectively. The reaction of NdCl₃ with [Ph₃COLi] gave the dimeric dichloride ate complex [Ph₃CONd(THF){(μ-Cl)₂Li(THF)₂}μ-Cl]₂ (<b>3</b>). Under similar conditions, the reaction of NdCl₃ with [Ph₃SiOLi] afforded the dimeric neodymium monochloride complex [(Ph₃SiO)₂Nd(THF)₂(μ-Cl)]₂ (<b>4</b>) regardless of the ratio of the reagents. Complexes <b>1–4</b> involved in the two- and three-component catalytic systems (<b>1–4</b>)—[Ph₃C][B(C₆F₅)₄] (1: 1) and (<b>1–4</b>)—AlBuⁱ₃—[Ph₃C][B(C₆F₅)₄] (1: 10: 1) initiate the polymerization of isoprene (IP) at room temperature and provide the 14–100% monomer-to-polymer conversion ([IP]/[Ln] = 1000) within 1 to 24 h. The synthesized polymer samples have predominantly a <i>trans</i>-1,4 structure (59.1–80.6%), a low number-average molecular weight (<i>M</i>_n = 0.71–12.71 · 10³), and a relatively broad molecular weight distribution (<i>M</i>_w/<i>M</i>_n = = 1.90–4.01). The reaction of complex <b>1</b> with [Ph₃C][B(C₆F₅)₄] (1: 1) gave the cationic dichloride complex [ScCl₂(THF)₄]⁺[B(C₆F₅)₄]⁻ (<b>5</b>). Complex <b>5</b> initiates the isoprene polymerization, resulting in the quantitative monomer-to-polymer conversion within 1 h. The synthesized polyisoprene contains 59.1% of <i>trans</i>-1,4 units and has <i>M</i>_n = 4.78 · 10³ and a narrow molecular weight distribution (<i>M</i>_w/<i>M</i>_n = 1.65).</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 2","pages":"376 - 386"},"PeriodicalIF":1.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716970","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}

{"title":"Synthesis and porous crystal structure of 1D zigzag π-stacked supramolecular polymer based on a new binuclear AgI thiacalix[4]arene complex bearing two 2,2′-bipyridyl moieties","authors":"A. S. Ovsyannikov,&nbsp;I. A. Litvinov,&nbsp;D. E. Pavlyuk,&nbsp;V. A. Platonov,&nbsp;I. S. Kovalev,&nbsp;D. S. Kopchuk,&nbsp;S. E. Solovieva,&nbsp;I. S. Antipin","doi":"10.1007/s11172-025-4533-6","DOIUrl":"10.1007/s11172-025-4533-6","url":null,"abstract":"<div><p>A new lower-rim 1,3-disubstituted thiacalix[4]arene derivative, bearing chelating 2,2′-bipyridyl groups, was synthesized and characterized in solution by ¹H and ¹³C NMR spectroscopy. The reaction of this compound with Ag^I cations afforded a binuclear cationic complex, in which thiacalix[4]arene acts as a bis-N,N,S-donor tridentate ligand. The supramolecular self-assembly of the Ag^I complex in the crystalline phase resulted in the formation of an extended 1D zigzag-like polymer through π-stacking interactions between bipyridyl substituents of the adjacent binuclear Ag^I thiacalix[4]arene complexes. The crystal packing of these π-stacked chains displays a porous supramolecular structure containing channels with a size of 8.8×9.4 Ų and possessing a free unit cell volume of 32.1%.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 2","pages":"418 - 427"},"PeriodicalIF":1.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716974","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}

{"title":"Synthesis and reactions of malonic esters based on hydroxymethyl-1,3-dioxacycloalkanes","authors":"Yu. G. Borisova,&nbsp;R. M. Sultanova,&nbsp;S. S. Zlotsky","doi":"10.1007/s11172-025-4534-5","DOIUrl":"10.1007/s11172-025-4534-5","url":null,"abstract":"<div><p>Malonates bearing 1,3-dioxacycloakane moiety were synthesized and some of their reactions were carried out under conditions of conventional heating and microwave irradiation. New malonates can be successfully used as C—H acids in the alkylation reaction as well as for the synthesis of tertiary amines and olefins. The conditions for synthesizing target products in quantitative yields using microwave activation were developed.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 2","pages":"428 - 433"},"PeriodicalIF":1.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716975","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}

{"title":"Kinetics and mechanism for the initiation of thermal polymerization of perfluoropropyl vinyl ether at high pressures","authors":"I. B. Konovalova,&nbsp;I. V. Zavarzin,&nbsp;S. A. Kanaev,&nbsp;A. A. Zharov","doi":"10.1007/s11172-025-4543-4","DOIUrl":"10.1007/s11172-025-4543-4","url":null,"abstract":"<div><p>Kinetics of thermal polymerization of perfluoropropyl vinyl ether was evaluated at pressures of 2.64–10.56 kbar and temperatures of 403–503 K. Activation energies at different pressures and volumes of activation at different temperatures were estimated. It was found that the activation energy increases upon increasing the pressure. The volume of activation increases slightly upon increasing the temperature. The order of reaction in the monomer was found. Bimolecular initiation of the reaction was proven.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 2","pages":"515 - 520"},"PeriodicalIF":1.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716799","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}

{"title":"Transesterification of dialkyl carbonates with allyl alcohol in the presence of basic catalysts","authors":"A. M. Semenova,&nbsp;K. A. Shamagulova,&nbsp;M. G. Pervova,&nbsp;M. A. Ezhikova,&nbsp;M. I. Kodess,&nbsp;A. V. Pestov","doi":"10.1007/s11172-025-4547-0","DOIUrl":"10.1007/s11172-025-4547-0","url":null,"abstract":"<div><p>Transesterification of dialkyl carbonates with allyl alcohol in the presence of bases afforded a mixture of alkyl allyl carbonate and diallyl carbonate. Dimethyl carbonate was found to be the most reactive and was used to obtain both unsymmetric allyl methyl carbonate and symmetric diallyl carbonate. Sodium and potassium alkoxides were more efficient catalysts for the transesterification compared to the corresponding hydroxides. The highest degree of transesterification of dimethyl carbonate (69%) was achieved using sodium alkoxide as a catalyst.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 2","pages":"534 - 537"},"PeriodicalIF":1.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716801","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}

{"title":"Synthesis, molecular and crystal structures of new amino enones containing trifluoromethyl and 3- or 4-pyridyl substituents","authors":"N. S. Boltacheva,&nbsp;P. A. Slepukhin,&nbsp;M. G. Pervova,&nbsp;D. L. Chizhov,&nbsp;V. I. Filyakova,&nbsp;V. N. Charushin","doi":"10.1007/s11172-025-4537-2","DOIUrl":"10.1007/s11172-025-4537-2","url":null,"abstract":"<div><p>The reaction of lithium (<i>Z</i>)-1,1,1-trifluoro-4-oxo-4-(pyridin-3-yl)- or (<i>Z</i>)-1,1,1-trifluoro-4-oxo-4-(4-pyridin-4-yl)but-2-en-2-olate with ammonium acetate in glacial AcOH afforded new amino enones containing an amino group geminal to the fluoroalkyl substituent, (<i>Z</i>)-3-amino-4,4,4-trifluoro-1-(pyridin-3-yl)- and (<i>Z</i>)-3-amino-4,4,4-trifluoro-1-(pyridin-4-yl)but-2-en-1-one, respectively. On heating in AcOH under reflux, (<i>Z</i>)-3-amino-4,4,4-trifluoro-1-(pyridin-3-yl)but-2-en-1-one undergoes a series of transformations, giving 7-trifluoromethyl-1,6-naphthyridine as one of the products. A comparative study of the physicochemical parameters and the crystal structures of amino enones containing a CF₃ group and 2-, 3-, or 4-pyridyl substituents was performed.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 2","pages":"451 - 460"},"PeriodicalIF":1.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716879","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}

{"title":"Salts of ethylenediamine and diethylenetriamines: modeling of crystal structure and estimation of enthalpies of formation","authors":"D. V. Khakimov,&nbsp;T. S. Pivina","doi":"10.1007/s11172-025-4527-4","DOIUrl":"10.1007/s11172-025-4527-4","url":null,"abstract":"<div><p>Based on quantum chemistry methods and atom-atom potentials, the molecular and crystal structures of a number of salts of diamines and triamines (ethylenediamine, diethylenetriamine, 4-methyldiethylenetriamine, and 4-nitrodiethylenetriamine) were modeled. New polymorphic modifications of salts were predicted. The thermochemical parameters of the compounds were assessed. The calculated enthalpies of formation in the solid phase coincide well with the experimental data known for some compounds.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 2","pages":"354 - 360"},"PeriodicalIF":1.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716971","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}

{"title":"From synthesis of silver nanoparticles to polymer nanocomposites","authors":"L. L. Gur’eva,&nbsp;L. I. Kuzub,&nbsp;D. V. Anokhin,&nbsp;E. R. Badamshina","doi":"10.1007/s11172-025-4524-7","DOIUrl":"10.1007/s11172-025-4524-7","url":null,"abstract":"<div><p>The regularities of formation of silver nanoparticles with a shell of coordinatively bound monocarboxylate ligands in a one-step synthesis by the reaction of low-temperature reduction of precursors, that is, silver alkyl- and oligostyrylmonocarboxylates, with triethylamine, diepoxy oligomer ED-20, and polyurethane prepolymer, were studied. A single mechanism of formation of silver nanoparticles through the dissolution of precursors in reducing agents by the reaction of formation of diphilic complexes between silver monocarboxylate molecules organized in micelles and electron-donor groups of reducing agents with a subsequent reduction reaction and self-assembly of nanoparticles was determined, which ensures the preservation of the spherical shape, small sizes (<i>d</i> ≈ 2–8 nm), and narrow dispersions: Ag⁺ → Ag⁰ → (Ag⁰)_<i>n</i>. Based on the determined mechanism, we propose a strategy for the preparation of polymer nanocomposites by curing with amines a pre-prepared modified binder consisting of epoxy resin ED-20 or polyurethane prepolymer, silver nanoparticles, and unreacted silver oligostyrylmonocarboxylate. The limiting concentration of the precursor in the modified binder, at which a uniform distribution of silver nanoparticles within the bulk of the nanocomposites is achieved, was determined. It is shown that silver nanoparticles slightly reduce the glass transition temperature and do not affect the mechanical properties of epoxy nanocomposites. The termophysical properties of the nanocomposites depend on the topology of the epoxy matrix.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"74 2","pages":"281 - 304"},"PeriodicalIF":1.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716972","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}