A. Yu. Petrov, N. V. Slovesnova, A. V. Baklykov, I. A. Litvinov, A. V. Rybakova, V. S. Gaviko, D. S. Kopchuk, G. V. Zyryanov, V. L. Rusinov
{"title":"Synthesis and Single Crystal X-Ray Diffraction Studies of 7-(methylsulfanyl)-3-Nitro[1,2,4]triazolo[5,1-c][1,2,4]Triazin-4(1H)-One and its Different Salts","authors":"A. Yu. Petrov, N. V. Slovesnova, A. V. Baklykov, I. A. Litvinov, A. V. Rybakova, V. S. Gaviko, D. S. Kopchuk, G. V. Zyryanov, V. L. Rusinov","doi":"10.1134/S0022476626060028","DOIUrl":"10.1134/S0022476626060028","url":null,"abstract":"<p>Crystal structures of 7-(methylsulfanyl)-3-nitro[1,2,4]triazolo[5,1-<i>c</i>][1,2,4]triazin-4(1<i>H</i>)-one (a heterocyclic support of antiviral drug Triazavirin®) and its different (meglumine and ammonium) salts are analyzed by single crystal X-ray diffraction (XRD). The data obtained are compared with the previously reported single crystal XRD data for the sodium salt. Salt anions tend to the layered localization in the crystal, which is especially characteristic of the structure of the meglumine salt. In the case of the ammonium cation having a smaller volume, such a localization type is accompanied by the inclusion of additional solvent molecules, which is also caused by a complicated 3D system of hydrogen bonds.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 6","pages":"1221 - 1233"},"PeriodicalIF":1.5,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148357836","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. Sapronov, A. S. Kubasov, A. S. Novikov, A. G. Tskhovrebov
{"title":"Unraveling Se⋯O Noncovalent Interactions in Pyridinium-Fused Diselenazolium Perchlorate and Perrhenate Salts: X-Ray and QTAIM Investigation","authors":"A. A. Sapronov, A. S. Kubasov, A. S. Novikov, A. G. Tskhovrebov","doi":"10.1134/S0022476626060090","DOIUrl":"10.1134/S0022476626060090","url":null,"abstract":"<p>This study explores the structural and electronic properties of two novel pyridinium-fused 1,2,4-diselenazolium salts containing aryl substituents and either perchlorate or perrhenate anions. Single crystal X-ray diffraction analysis reveals that the bicyclic heterocycles exhibit non-planar geometries, with the two selenium atoms displaying distinct coordination environments: a T-shaped geometry for Se1 and a bent geometry for Se2. In the solid state, these compounds form supramolecular dimers driven by multicenter Se⋯O chalcogen bonding interactions between the cationic core and the oxoanions. Theoretical investigations using Density Functional Theory and Quantum Theory of Atoms in Molecules topological analysis confirm the nature of these noncovalent contacts. The estimated interaction energies for the Se⋯O contacts range from 0.9 kcal/mol to 4.1 kcal/mol, characterizing them as purely noncovalent, attractive bonding interactions. These findings provide additional insights into the directional chalcogen bonding capabilities of diselenium-containing heterocycles, expanding their potential utility in anion recognition and crystal engineering.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 6","pages":"1318 - 1326"},"PeriodicalIF":1.5,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148357874","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}
J. -W. Jia, Z. Ren, P. Luo, Z. Kong, Z. -Y. Wang, X. -Y. Dong
{"title":"Halides-Promoted Construction and Assembly of Copper Nanoclusters Capped by Bulky Zwitterionic Ligands","authors":"J. -W. Jia, Z. Ren, P. Luo, Z. Kong, Z. -Y. Wang, X. -Y. Dong","doi":"10.1134/S0022476626060156","DOIUrl":"10.1134/S0022476626060156","url":null,"abstract":"<p>Surface-passivating agents are pivotal in determining the structures and associated properties of monolayer-protected metal nanoclusters (NCs). Herein, by utilizing bulky zwitterionic sulfur-containing ligands, namely (C<sub>6</sub>H<sub>5</sub>)<sub>3</sub>PCH<sub>2</sub>CH<sub>2</sub>CH<sub>2</sub>SNaBr (NaL∙Br) and along with halides-induced tactics, we isolated two novel copper NCs Cu<sub>14</sub>L<sub>6</sub>Br<sub>12</sub>Cl<sub>2</sub> (<b>1</b>), Cu<sub>15</sub>L<sub>6</sub>BrI<sub>14</sub> (<b>2</b>) as well as an assembly compound [Cu<sub>16.5</sub>L<sub>6</sub>Br<sub>16.5</sub>]<sub><i>n</i></sub> (<b>3</b>). X-ray diffraction analysis reveals that compound <b>3</b> is formed through the assembly of two infinite 1D chains, composed of monomers Cu<sub>14</sub>L<sub>6</sub>Br<sub>14</sub> and Cu<sub>16</sub>L<sub>6</sub>Br<sub>16</sub> respectively. Compounds <b>1</b>, <b>2</b> and the monomers of <b>3</b> possess similar Cu<sub>12</sub>S<sub>6</sub>X<sub>6</sub> arrangement (X = Cl, Br and I), and all three compounds demonstrate reversible luminescence thermochromic behaviors. The study enriches the structure of zwitterionic ligand-protected copper NCs, and elucidates the regulatory role of halides in modulating structures.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 6","pages":"1399 - 1408"},"PeriodicalIF":1.5,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148357832","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}
G. A. Razgonyaeva, M. A. Shmelev, A. S. Chistyakov, A. A. Bovkunova, A. A. Anisimov, A. A. Sidorov, I. L. Eremenko
{"title":"Synthesis and Structure of Mixed-Anionic Europium Compounds with Anions of 3-Thiophenecarboxylic and Benzoic or Pentafluorobenzoic Acids","authors":"G. A. Razgonyaeva, M. A. Shmelev, A. S. Chistyakov, A. A. Bovkunova, A. A. Anisimov, A. A. Sidorov, I. L. Eremenko","doi":"10.1134/S0022476626060144","DOIUrl":"10.1134/S0022476626060144","url":null,"abstract":"<p>3-Thiophenecarboxylate (tio)-benzoate (bz) and 3-thiophenecarboxylate-pentafluorobenzoate (pfb) europium compounds [Eu(EtOH)<sub>2</sub>(tio)<sub>0.9</sub>(bz)<sub>2.1</sub>]<sub><i>n</i></sub> (<b>1</b>) and [Eu<sub>2</sub>(EtOH)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>(tio)<sub>2</sub>(pfb)<sub>4</sub>]·2H(tio) (<b>2</b>) characterized by a polymeric and a molecular structure, respectively, are prepared. The [Eu<sub>2</sub>(phen)<sub>2</sub>(tio)<sub>1.5</sub>(bz)<sub>4.5</sub>] (<b>3</b>) and [Eu<sub>2</sub>(phen)<sub>2</sub>(tio)<sub>2</sub>(pfb)<sub>4</sub>] (<b>4</b>) molecular compounds are prepared using 1,10-phenanthroline (phen) as the <i>N</i>-donor ligand. It is shown that anion positions in the 3-thiophenecarboxylatebenzoate compounds <b>1</b> and <b>3</b> are occupied both by tio<sup>–</sup> and bz<sup>–</sup> anions with different occupancies, whereas all anion positions in 3- thiophenecarboxylate-pentafluorobenzoate compounds <b>2</b> and <b>4</b> are unequivocally determined. The obtained compounds are characterized by XRD, IR spectroscopy, and CHN analysis. The structure and crystal packing of the complexes is analyzed in detail.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 6","pages":"1385 - 1398"},"PeriodicalIF":1.5,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148357864","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}
Yu. A. Teterin, M. V. Ryzhkov, K. I. Maslakov, A. Yu. Teterin, S. N. Kalmykov, V. G. Petrov
{"title":"Electronic Structure and XPS Valence Electron Band Analysis of Ce2O3","authors":"Yu. A. Teterin, M. V. Ryzhkov, K. I. Maslakov, A. Yu. Teterin, S. N. Kalmykov, V. G. Petrov","doi":"10.1134/S0022476626060041","DOIUrl":"10.1134/S0022476626060041","url":null,"abstract":"<p>The structure of the X-ray photoelectron spectrum (XPS) of Ce<sub>2</sub>O<sub>3</sub> valence electrons is analyzed in the range from 0 eV to ~50 eV with taking into account the structures of XPS spectra of core electrons and the results of the relativistic discrete variation calculation of the electronic structures of <span>(text{CeO}_{7}^{11-})</span> and <span>(text{Ce}_{16}text{O}_{53}^{58-})</span> clusters (<i>C</i><sub>3ν</sub>), which reflect the nearest environment of cerium in Ce<sub>2</sub>O<sub>3</sub>. Based on the experimental comparison of the structures of valence and core electron spectra, many-body processes are shown to contribute much less to the structure of the valence electron spectrum than the formation of outer and inner valence molecular orbitals (MOs). It is found that in the Ce<sub>2</sub>O<sub>3</sub> valence region, occupied Ce 4<i>f</i> electron states arise at 1.4 eV. Atomic orbitals (AOs) of Ce 5<i>p</i> electrons participate in the formation of not only inner valence but also outer valence MOs (OVMOs). The large contribution into the OVMO formation is made by occupied Ce 5<i>p</i><sub>1/2,3/2</sub> and O 2<i>s</i> AOs. The composition and order of these MOs is determined in the energy range from 0 eV to ~50 eV, and the quantitative MO scheme was constructed for the <span>(text{CeO}_{7}^{11-})</span> cluster (<i>C</i><sub>3ν</sub>). This scheme is needed not only to understand the nature of the chemical bond in Ce<sub>2</sub>O<sub>3</sub>, but also to solve the complicated structures of other X-ray (emission, absorption, etc.) spectra of the considered oxide.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 6","pages":"1245 - 1259"},"PeriodicalIF":1.5,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148357871","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}
T. C. Prado de Souza, R. A. Carvalho Souza, J. A. Ellena, W. Guerra, C. Teodoro de Carvalho, C. G. Oliveira
{"title":"Synthesis, Structural Characterization, in Silico ADME Approach and Thermal Analysis of (Z)-2-(5-bromo-2-oxoindolin-3-ylidene)-N-R-Hydrazinecarbothioamide","authors":"T. C. Prado de Souza, R. A. Carvalho Souza, J. A. Ellena, W. Guerra, C. Teodoro de Carvalho, C. G. Oliveira","doi":"10.1134/S002247662605001X","DOIUrl":"10.1134/S002247662605001X","url":null,"abstract":"<p>Two thiosemicarbazone derivatives, named (Z)-2-(5-bromo-2-oxoindolin-3-ylidene)-<i>N</i>-methyl-hydrazinecarbothiamide (<b>1</b>) and (<i>E</i>)-2-(5-bromo-2-oxoindolin-3-ylidene)-<i>N</i>-phenyl-hydrazinecarbothiamide (<b>2</b>), are synthesized by the reaction between bromoisatin and the corresponding thiosemicarbazides (methyl or phenyl) under acid catalysis. The reactions are carried out under reflux, leading to products with analytical purity and yields of 85.44% (<b>1</b>) and 84.73% (<b>2</b>). Both compounds are characterized by FTIR, <sup>1</sup>H and <sup>13</sup>C{<sup>1</sup>H} NMR spectroscopy, and thermal analysis (TGA-DTA). The TGA-DTA results revealed high thermal stability up to approximately 260 °C, with decomposition occurring in three main steps influenced by the substituent group. Additionally, compound <b>1</b> is characterized by single crystal X-ray diffraction. Spectroscopic data confirm the expected functional groups and structural features, supporting the successful synthesis and structural elucidation of two bromoisatin-derived thiosemicarbazones.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 5","pages":"975 - 986"},"PeriodicalIF":1.4,"publicationDate":"2026-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148196354","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, Structures and Urease Inhibition Studies of Copper(II) and Zinc(II) Complexes Derived from N’-(4-bromo-2-hydroxybenzylidene)-4-Hydroxybenzohydrazide","authors":"N. Wang, Y. -M. Liu, X. -Y. Qiu","doi":"10.1134/S0022476626050094","DOIUrl":"10.1134/S0022476626050094","url":null,"abstract":"<p>Two new copper(II) and zinc(II) complexes [Cu<sub>2</sub>(bhb)<sub>2</sub>(CH<sub>3</sub>OH)<sub>2</sub>] (<b>1</b>) and [Zn(Hbhb)<sub>2</sub>]·4CH<sub>3</sub>OH (<b>2</b>), where bhb and Hbhb are the dianionic and monoanionic forms of <i>N</i>’-(4-bromo-2-hydroxybenzylidene)-4-hydroxybenzohydrazide (H<sub>2</sub>bhb), respectively. The two complexes are characterized by elemental analysis and physico-chemical method, as well as single crystal X-ray diffraction. The Cu atom in complex <b>1</b> is in square pyramidal coordination, and the Zn atom in complex <b>2</b> is in octahedral coordination. The compounds are tested for their urease inhibitory properties. The copper complex has strong activity (<i>IC</i><sub>50</sub> = 1.7 ± 0.3 μM).</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 5","pages":"1045 - 1053"},"PeriodicalIF":1.4,"publicationDate":"2026-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148196305","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. S. Zaguzin, M. A. Bondarenko, A. V. Zaitsev, N. A. Korobeinikov, R. V. Redkin, E. A. Pilyukova, S. A. Adonin
{"title":"Synthesis and Structure of Two New Metal-Organic Frameworks: [Cd3(bdc)2.4(2-Ibdc)0.6(DMF)4] and [Cd(2-Ibdc)(bipy)]·1.2(DMF)","authors":"A. S. Zaguzin, M. A. Bondarenko, A. V. Zaitsev, N. A. Korobeinikov, R. V. Redkin, E. A. Pilyukova, S. A. Adonin","doi":"10.1134/S0022476626050045","DOIUrl":"10.1134/S0022476626050045","url":null,"abstract":"<p>The Cd(II) coordination polymers [Cd<sub>3</sub>(bdc)<sub>2.4</sub>(2-Ibdc)<sub>0.6</sub>(DMF)<sub>4</sub>] <b>(1)</b> and [Cd(2-Ibdc)(bipy)]·1.2DMF (<b>2</b>·<b>1.2DMF)</b> are obtained. In compound <b>1</b>, partial replacement of terephthalic acid (bdc) molecules by 2-iodoterephthalic acid (2-Ibdc) molecules is achieved. The structure of compound <b>2</b>·<b>1.2DMF</b> exhibits a disorder of 2-Ibdc and 4,4′-bipyridine molecules. The structures of the compounds are determined by single crystal X-ray diffraction analysis.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 5","pages":"1004 - 1013"},"PeriodicalIF":1.4,"publicationDate":"2026-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148196318","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, Crystal Structure, and π–π-Stacking Interactions in a Complex of Zinc(II) Chloride with Methylene Blue","authors":"V. K. Sabirov, M. X. Kadirova","doi":"10.1134/S0022476626050197","DOIUrl":"10.1134/S0022476626050197","url":null,"abstract":"<p>The crystal structure of the (MB)<sub>2</sub>[ZnCl<sub>4</sub>]·H<sub>2</sub>O complex (MB is the methylene blue cation) is studied by single crystal XRD. The asymmetric unit of the crystal structure consists of one tetrahedral [ZnCl<sub>4</sub>]<sup>2–</sup> anion, two crystallographically independent methylene blue (MB)<sup>+</sup> cations, and one molecule of crystallization water. A pair of (MB)<sup>+</sup> cations related by an inversion center forms a dimer stabilized by π–π-stacking interactions with molecules orientated in the antiparallel mode. Intermolecular π–π-stacking interactions of (MB)<sup>+</sup> cations are analyzed using the Hirshfeld surfaces method. The energies of these interactions are calculated using density functional theory (B3LYP/6-31G) and Hartree–Fock (HF/6-21G) methods.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 5","pages":"1174 - 1185"},"PeriodicalIF":1.4,"publicationDate":"2026-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148196321","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}
M. A. Bondarenko, A. S. Zaguzin, N. A. Korobeynikov, R. V. Redkin, E. A. Pilyukova, A. V. Zaitsev, I. V. Korolkov, S. A. Adonin
{"title":"Metal-Organic Framework of Cd(II) with 2-Iodoterephthalic Acid: Synthesis and Structural Features","authors":"M. A. Bondarenko, A. S. Zaguzin, N. A. Korobeynikov, R. V. Redkin, E. A. Pilyukova, A. V. Zaitsev, I. V. Korolkov, S. A. Adonin","doi":"10.1134/S0022476626050033","DOIUrl":"10.1134/S0022476626050033","url":null,"abstract":"<p>Structural data are obtained for a coordination polymer of Cd(II) with 2-iodoterephthalic acid as a by-product of the synthesis of a heterometallic Cd/Zn MOF. The composition and structure of the [Cd(2-I-bdcH)<sub>2</sub>] (<b>1</b>) compound are determined by XRD after optimizing the synthesis technique and obtaining good-quality single crystals.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 5","pages":"995 - 1003"},"PeriodicalIF":1.4,"publicationDate":"2026-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148196352","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}