V. I. Sinitsa, P. S. Smirnov, E. Yu. Filatov, N. V. Kuratieva, P. E. Plyusnin, S. V. Korenev
{"title":"tris-Ethylenediamine Complexes of Rhodium(III) and Iridium(III): Synthesis, Crystal Structures, and Formation of Double Complex Salts with Oxalato Cuprate(II)","authors":"V. I. Sinitsa, P. S. Smirnov, E. Yu. Filatov, N. V. Kuratieva, P. E. Plyusnin, S. V. Korenev","doi":"10.1134/S0022476626040128","DOIUrl":"10.1134/S0022476626040128","url":null,"abstract":"<p>Optimal synthesis procedures with the use of the hydrothermal approach and providing high yields are developed for complex salts [M(en)<sub>3</sub>]X<sub>3</sub>·<i>n</i>H<sub>2</sub>O (M = Rh, Ir; X = Cl, I), and new double complex salts (DCSs) with oxalato cuprate(II) are also obtained. [M(en)<sub>3</sub>]I<sub>3</sub>·H<sub>2</sub>O (M = Rh, Ir) and [M(en)<sub>3</sub>]<sub>2</sub>[Cu(H<sub>2</sub>O)(C<sub>2</sub>O<sub>4</sub>)<sub>2</sub>]<sub>2</sub>[Cu(H<sub>2</sub>O)<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>)<sub>2</sub>]·<i>n</i>H<sub>2</sub>O (M = Rh, Ir) DCSs are structurally characterized for the first time. These compounds are isostructural to similar cobalt salts. The crystal structures of [Ir(en)<sub>3</sub>]Cl<sub>3</sub>·0.25KCl·3.25H<sub>2</sub>O, [Rh(en)<sub>3</sub>]Cl<sub>3</sub>·0.5KCl·3H<sub>2</sub>O, and [Ir(en)<sub>3</sub>][Cu(H<sub>2</sub>O)<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>)<sub>2</sub>]<sub>0.5</sub>[CuI<sub>2</sub> (C<sub>2</sub>O<sub>4</sub>)<sub>2</sub>]<sub>0.5</sub>·5H<sub>2</sub>O salts are determined. Thermal destruction processes of DCSs are studied in detail in reducing and inert atmospheres. Thermal decomposition of the compounds is shown to lead to the formation of stable and metastable M<sub><i>x</i></sub>Cu<sub>1–<i>x</i></sub> (M = Rh, Ir) solid solutions.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 4","pages":"841 - 854"},"PeriodicalIF":1.4,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147830180","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":"Atomic Charge Distribution and Chemical Bonding in Isolated Molecules of 3,4-Dihydro-1H-Benzo[c][1,2]Thiazine 2,2-Dioxide Derivatives","authors":"S. V. Kartashov, A. P. Fedonin, R. R. Fayzullin","doi":"10.1134/S0022476626040013","DOIUrl":"10.1134/S0022476626040013","url":null,"abstract":"<p>The atomic charge (re)distribution in isolated molecules of 3,4-dihydro-1<i>H</i>-benzo[<i>c</i>][1,2]thiazine 2,2-dioxide derivatives, arising from covalent bonding and nonclassical hydrogen bonding of the [C(<i>sp</i><sup>3</sup>)–] H⋯N type, is analyzed in terms of the superposition of the conservative vector fields of the electrostatic force <b>F</b><sub>es</sub>(<b>r</b>), the total static force <b>F</b><sub>em</sub>(<b>r</b>), and the electron density gradient ∇ρ(<b>r</b>). For the molecules studied, the distribution of the exchange charge density <i>q</i><sub><i>x</i></sub>(<b>r</b>) = ∇·<b>F</b><sub><i>x</i></sub>(<b>r</b>)/(4π), evaluated within the local density approximation, enables the characterization of the electron pair on the pyramidal nitrogen atom in the sulfonamide group and clarifies its role in the intramolecular H⋯N interatomic interaction.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 4","pages":"713 - 725"},"PeriodicalIF":1.4,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147830033","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":"Copper(I) Thiocyanate Complex with 2-Benzylthio-4-(3,5-dimethyl-1H-pyrazol-1-yl)Pyrimidine: Synthesis, Polymorphism, and Luminescence","authors":"S. V. Skvortsova, F. K. Verkhov","doi":"10.1134/S0022476626040062","DOIUrl":"10.1134/S0022476626040062","url":null,"abstract":"<p>A copper(I) thiocyanate complex with 2-benzylthio-4-(3,5-dimethyl-1<i>H</i>-pyrazol-1-yl)pyrimidine (L) is prepared. According to the SC-XRD data, this complex is a ladder-like 1D coordination polymer <b>[Cu</b><sub><b>2</b></sub><b>L</b><sub><b>2</b></sub><b>(SCN)</b><sub><b>2</b></sub><b>]</b><sub><b><i>n</i></b></sub> (<i>P</i>2<sub>1</sub>/<i>c</i> space group). The ladder structure of the polymer is formed by bridging SCN<sup>–</sup> ions coordinated to Cu<sup>+</sup> ions by N and S atoms, while the S atom is coordinated to two Cu<sup>+</sup> ions. Thus, SCN<sup>–</sup> ions in this structure exhibit N,μ-S coordination. The L molecules are coordinated to Cu<sup>+</sup> ions in monodentate mode via the N1 atom of the pyrimidine ring. The complex demonstrates green luminescence (λ<sub>max</sub> = 530 nm). Along with [Cu<sub>2</sub>L<sub>2</sub>(SCN)<sub>2</sub>]<sub><i>n</i></sub>, two other modifications of this complex - α-([CuL(SCN)] MeCN)<sub><i>n</i></sub> (<i>P</i>2<sub>1</sub>/<i>c</i> space group) and β-([CuL(SCN)]·0.5MeCN)<sub><i>n</i></sub> (<i>Aea</i>2 space group) were characterized by SC-XRD, and it was shown that these complexes have a chained zigzag structure due to the N,S-coordination of SCN<sup>–</sup> ions, while L molecules are coordinated to the Cu<sup>+</sup> ions in bidentate-cyclic mode via the N2 atom of the pyrimidine ring and the N4 atom of the pyrazole ring.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 4","pages":"776 - 786"},"PeriodicalIF":1.4,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147830110","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}
A. A. Buravlev, I. Y. Bagryanskaya, A. Yu. Makarov
{"title":"Molecular and Crystal Structure of 1,2,3-Tribenzylthiobenzene and 1,2-Dibenzylthio-3-Fluorobenzene According to XRD Data and Density Functional Theory Computations","authors":"A. A. Buravlev, I. Y. Bagryanskaya, A. Yu. Makarov","doi":"10.1134/S0022476626040153","DOIUrl":"10.1134/S0022476626040153","url":null,"abstract":"<p>1,2,3-Tribenzylthiobenzene and 1,2-dibenzylthio-3-fluorobenzene are prepared and characterized by XRD. The crystals of both compounds feature intermolecular C–H⋯π interactions with 2.74-2.78 Å distances to the benzene ring planes. The 1,2-dibenzylthio-3-fluorobenzene crystal also displays inter- and intramolecular C–F⋯π interactions so that the distances to the planes are 3.42 Å and 3.44 Å, respectively. A conformational analysis of free molecules of these compounds was performed by the GOAT/XTB method, and the determined global minima were optimized by the B3LYP/def2-TZVPP method. In the identified minimum-energy conformations, all pairs of benzene rings adopt a <i>gauche </i>orientation with respect to the CH<sub>2</sub>–S bonds. These “folded” compact conformations differ strongly from those observed in crystals where one benzyl group of each conformation adopts a <i>gauche </i>orientation with respect to the central benzene ring. The energy differences between the conformations observed in crystals and the optimized ones are 60.7 kJ/mol for 1,2,3-tribenzylthiobenzene and 22.6 kJ/mol for 1,2-dibenzylthio-3-fluorobenzene, i.e. several times smaller than the energies of intermolecular interactions in crystals calculated by the same method (222.4 kJ/mol and 170.3 kJ/mol, respectively).</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 4","pages":"882 - 892"},"PeriodicalIF":1.4,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147830176","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}
E. A. Simonova, D. M. Khramtsova, A. A. Goreyavcheva, E. N. Nigmatulina
{"title":"Crystal Growth and Luminescent Characteristics of Li–Ba Fluorides, Borates, and Fluoroborates Doped with REE (REE = Sm, Eu, Tb)","authors":"E. A. Simonova, D. M. Khramtsova, A. A. Goreyavcheva, E. N. Nigmatulina","doi":"10.1134/S0022476626040104","DOIUrl":"10.1134/S0022476626040104","url":null,"abstract":"<p>Our work studies the crystal growth and luminescent characteristics of lithium-barium fluorides, borates, and fluoroborates (LiBaF<sub>3</sub>, LiBa<sub>2</sub>B<sub>5</sub>O<sub>10</sub>, LiBa<sub>12</sub>(BO<sub>3</sub>)<sub>7</sub>F<sub>4</sub>) doped with rare-earth elements (REE = Sm, Eu, Tb). The crystals are successfully grown by solution-melt crystallization in the quadruple Li, Ba, B // O, F mutual system. The crystal chemical analysis, the study of the chemical composition, and the detailed investigation of photoluminescence and excitation spectra are performed. The effective inclusion of REE into the matrix structure is determined, with pure matrices demonstrating own defective blue-light blue luminescence. It is shown that LiBa<sub>2</sub>B<sub>5</sub>O<sub>10</sub> and LiBaF<sub>3</sub> are effective matrices for Eu<sup>3+</sup> ions, providing intense orange-red luminescence. The LiBa<sub>12</sub>(BO<sub>3</sub>)<sub>7</sub>F<sub>4</sub> crystals demonstrate the greatest flexibility in color tuning (from bright green with Tb<sup>3+</sup> to orange-red with Sm<sup>3+</sup>) and intricate concentration-dependent energy transfer between Tb<sup>3+</sup> and Eu<sup>3+</sup> that allows color management in a wide range.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 4","pages":"815 - 826"},"PeriodicalIF":1.4,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147830179","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":"Structural Parameters of the Nearest Environment of Ions in Nickel Chloride Aqueous Solutions According to XRD Data","authors":"P. R. Smirnov, O. V. Grechin","doi":"10.1134/S0022476626040189","DOIUrl":"10.1134/S0022476626040189","url":null,"abstract":"<p>Coordination numbers of ions, interparticle distances, and types of ion pairs in nickel chloride aqueous solutions are determined in a wide range of concentrations under standard conditions using a model approach to X-ray diffraction data. It is established that the structure of the saturated nickel chloride solution is determined by the set of contact ion pairs and independently hydrated ions. As a result of dilution, ion pairs get broken, while the number of solvent molecules in the immediate environment of ions increases. The Ni<sup>2+</sup> coordination number in dilute solutions increases up to six. The number of water molecules in the second coordination spheres of cations and in the immediate environment of anions increases with decreasing concentration.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 4","pages":"915 - 921"},"PeriodicalIF":1.4,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829883","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":"Structures and Nonlinear Optical Properties of the Functionalized Porphyrin with the Alkalides: a DFT Study","authors":"Y. Lu, X. Li","doi":"10.1134/S0022476626040177","DOIUrl":"10.1134/S0022476626040177","url":null,"abstract":"<p>Nonlinear optical materials have potential applications in optical signal processing, photovoltaic conversion, and optical information storage. As organic conjugated material, its high second-order nonlinear optical (NLO) properties can be produced due to the introduction of alkali metal species on porphyrin surface. In order to investigate the effects of alkali metal atoms on the second-order NLO properties of porphyrin derivative (PYD) complexes, a series of novel alkali metal porphyrin derivatives (M@PYD and M<sub>2</sub>F@PYD, M = Li, Na, K) are systematically studied using the density-functional theory calculations. Firstly, the stable structures of all the complexes are confirmed, and the high chemical stability of alkali metal porphyrin complexes is explored by the analysis of binding energy. The nonlinear optical properties of stable structures are analyzed to obtain the dipole moments, polarizabilities and the static first hyperpolarizabilities of the functionalized complexes. The calculated results show that the system has the maximum static first hyperpolarizability (β<sub>0</sub> = 2457.573 a.u.) when the Na<sub>2</sub>F molecule is introduced onto the PYD surface, whereas M@PYD has relatively small static first hyperpolarizability. The present findings will provide the important reference for designing the high-performance porphyrin-based NLO materials.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 4","pages":"903 - 914"},"PeriodicalIF":1.4,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147830171","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}
D. N. Konshina, I. A. Lupanova, E. A. Spesivaya, I. V. Sukhno, V. V. Konshin
{"title":"Synthesis and Structure of “Clickable” Boron Difluoride Formazanate","authors":"D. N. Konshina, I. A. Lupanova, E. A. Spesivaya, I. V. Sukhno, V. V. Konshin","doi":"10.1134/S0022476626040190","DOIUrl":"10.1134/S0022476626040190","url":null,"abstract":"<p>1,1-Difluoro-4-(4-(prop-2-yn-1-yloxy)phenyl)-2,6-diphenyl-1-bora-2,3,5,6-tetrazine is prepared by the reaction of boron trifluoride etherate with 3-(4-prop-2-yn-1-yloxy)phenyl-1,5-diphenylformazan in the presence of triethylamine in toluene. The obtained compound is structurally characterized.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 4","pages":"922 - 929"},"PeriodicalIF":1.4,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147830111","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, Characterization and Crystal Structures of Aroylhydrazones Derived from 4-Hydroxy-3-Nitrobenzaldehyde with Various Hydrazides","authors":"Y. Wang, W. Li, N. Song","doi":"10.1134/S0022476626040165","DOIUrl":"10.1134/S0022476626040165","url":null,"abstract":"<p>Three new aroylhydrazones are prepared by reaction of 4-hydroxy-3-nitrobenzaldehyde with 4-bromobenzohydrazide, 3-trifluoromethylbenzohydrazide and 2-aminobenzohydrazide, respectively in MeOH. The three compounds are characterized by elemental analysis, IR and <sup>1</sup>H NMR spectra. Detailed structures of the compounds are determined by single crystal X-ray diffraction. Antibacterial activities of the compounds are evaluated on <i>E. coli, P. aeruginosa, B. subtilis, and S. aureus</i> and show high potency.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 4","pages":"893 - 902"},"PeriodicalIF":1.4,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829829","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}