S. V. Kozin, N. A. Aksenov, A. A. Kravtsov, O. M. Lyasota, E. O. Gerasimenko, A. V. Bespalov, L. I. Ivashchenko, V. V. Dotsenko
{"title":"1D Coordination Polymer of Mg2+ with Kojic Acid: Synthesis, Structure, and Thermal Behavior","authors":"S. V. Kozin, N. A. Aksenov, A. A. Kravtsov, O. M. Lyasota, E. O. Gerasimenko, A. V. Bespalov, L. I. Ivashchenko, V. V. Dotsenko","doi":"10.1134/S1070328426600105","DOIUrl":"10.1134/S1070328426600105","url":null,"abstract":"<p>Coordination compound [Mg(HKoj<sup>–</sup>)<sub>2</sub>]<sub><i>n</i></sub> is synthesized by the reaction of kojic acid (H<sub>2</sub>Koj) with magnesium acetate in an aqueous solution. The empirical formula of the synthesized compound is determined from the elemental and thermogravimetric analyses data. The thermal oxidative stability of magnesium kojate is studied by simultaneous thermal analysis in air. The molecular structure of the complex is discussed using spectral methods (NMR and IR spectroscopy) and studied in detail using X-ray diffraction (XRD) analysis (CIF file CCDC no. 2513260). Magnesium kojate is a coordination polymer with the chelate environment of the metal cation. The compound crystallizes in the triclinic symmetry group <span>(Pbar 1)</span>.</p>","PeriodicalId":759,"journal":{"name":"Russian Journal of Coordination Chemistry","volume":"52 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148838297","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}
K. R. Huang, Y. Huang, Y. L. Gan, W. Lu, C. Z. Zhong, T. W. Zhang, L. S. Cui
{"title":"Zn-Based MOF: Synthesis, Structure, and Fluorescence Sensing of Tetracycline","authors":"K. R. Huang, Y. Huang, Y. L. Gan, W. Lu, C. Z. Zhong, T. W. Zhang, L. S. Cui","doi":"10.1134/S1070328426600233","DOIUrl":"10.1134/S1070328426600233","url":null,"abstract":"<p>A 2D Zn(II)-based MOF (Zn-MOF) named [Zn(bpydb)(bib)]<sub><i>n</i></sub> was solvothermally synthesized using 4,4'-(4,2'-bipyridine)-2,6-dibenzoic acid (H<sub>2</sub>bpydb) and 1,4-bis(imidazolyl)butane (bib). It crystallizes in the monoclinic <i>P</i>2<sub>1</sub>/<i>c</i> space group with Zn<sup>2+</sup> in a four-coordinate tetrahedral geometry. Elemental and FT-IR analyses verified high purity and successful framework formation. The Zn-MOF shows strong fluorescence at 388 nm (λ<sub>ex</sub> = 245 nm) with a red shift from LLCT, and good thermal stability up to 395°C. Fluorescence quenching tests reveal nearly 100% selective quenching toward tetracycline (TC), with <i>K</i><sub>SV</sub> = 7.99519 × 10<sup>6</sup> M<sup>–1</sup>, <i>R</i><sup>2</sup> = 0.9963, and detection limit of 3.75 × 10<sup>–8</sup> M. Featuring excellent water, the thermal and chemical stability, this Zn-MOF is a promising fluorescence probe for trace TC detection in aqueous environments.</p>","PeriodicalId":759,"journal":{"name":"Russian Journal of Coordination Chemistry","volume":"52 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148838309","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}
I. V. Egorova, E. S. Plankina, N. A. Rodionova, V. V. Zhidkov, L. N. Makeeva, N. V. Pervukhina, N. V. Kuratieva
{"title":"Hydroxystibonium Complexes: [(2,6-(OMe)2C6H3)3SbOH]I and [(2,6-(OMe)2C6H3)3SbOH]ClO4·0.5EtOH Synthesis and Structure","authors":"I. V. Egorova, E. S. Plankina, N. A. Rodionova, V. V. Zhidkov, L. N. Makeeva, N. V. Pervukhina, N. V. Kuratieva","doi":"10.1134/S1070328426600610","DOIUrl":"10.1134/S1070328426600610","url":null,"abstract":"<p>Hydroxystibonium complex [(2,6-(OMe)<sub>2</sub>C<sub>6</sub>H<sub>3</sub>)<sub>3</sub>SbOH]I (<b>I</b>) was obtained by recrystallization of the product of iodination of tris(2,6-dimethoxyphenyl)stibine from wet pyridine. The reaction of benzene solutions of tris(2,6-dimethoxyphenyl)antimony dibromide and silver perchlorate followed by recrystallization from ethanol afforded complex [(2,6-(OMe)<sub>2</sub>C<sub>6</sub>H<sub>3</sub>)<sub>3</sub>SbOH]ClO<sub>4</sub>·0.5EtOH (<b>II</b>) with a similar antimony organic cation. Comparative characterization of the compounds was carried out using IR spectroscopy and X-ray diffraction methods. According to X-ray diffraction data (CCDC nos. 2 556 559 (<b>I</b>), 2 556 560 (<b>II</b>)), the tetrahedral [(2,6-(OMe)<sub>2</sub>C<sub>6</sub>H<sub>3</sub>)<sub>3</sub>SbOH]<sup>+</sup> cations of the compounds have a structural similarity. The OSbC bond angles are 101.8(1)°–112.1(1)° (<b>I</b>), 98.3(1)°–110.6(1)°, 97.1(1)°–110.3(1)° (<b>II</b>); the CSbC angles are 104.8(1)°–115.1(1)° (<b>I</b>), 108.2(1)°–114.7(1)°, 105.3(1)°–118.2(1)° (<b>II</b>). The Sb–O and Sb–C interatomic distances are 1.910(3) Å (<b>I</b>), 1.914(3), 1.918(3) Å (<b>II</b>); and 2.073(3)–2.080(3) Å (<b>I</b>), 2.074(4)–2.089(3), 2.072(4)–2.083(4) Å (<b>II</b>).</p>","PeriodicalId":759,"journal":{"name":"Russian Journal of Coordination Chemistry","volume":"52 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148838199","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}
L. D. Popov, Yu. A. Belousov, N. I. Vikrishchuk, O. P. Demidov, I. A. Estrin
{"title":"Gadolinium(III) and Terbium(III) Complexes with an Asymmetric Phosphine Ligand—Synthesis, Structure, and Photoluminescent Properties","authors":"L. D. Popov, Yu. A. Belousov, N. I. Vikrishchuk, O. P. Demidov, I. A. Estrin","doi":"10.1134/S1070328426600166","DOIUrl":"10.1134/S1070328426600166","url":null,"abstract":"<p>New complexes [GdL<sub>3</sub>(NO<sub>3</sub>)<sub>3</sub>] (<b>I</b>) and [TbL<sub>3</sub>(NO<sub>3</sub>)<sub>3</sub>] (<b>II</b>) with asymmetric phosphine oxide were synthesized and studied. The Gd(III) complex was characterized by X-ray diffraction (CIF file CCDC no. 2 523 426). The luminescence spectra of the obtained complexes were studied. Substitution of one phenyl ring in TPPO with a methyl group yields ligand phosphine oxide (L) L with a reduced triplet energy (~25 000 cm<sup>–1</sup>), which matches Latva’s optimal range for Tb(III) sensitization. Сomplex <b>II</b> exhibits bright green emission, confirming efficient energy transfer. Ligand L is thus proposed as an ancillary ligand for quenching solvent displacement in terbium diketonate and carboxylate complexes.</p>","PeriodicalId":759,"journal":{"name":"Russian Journal of Coordination Chemistry","volume":"52 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148838296","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}
A. V. Klimashevskaya, M. A. Zherebtsov, R. V. Rumyantsev, I. A. Yakushev, P. V. Dorovatovskii, A. V. Piskunov
{"title":"Effect of Halogen Substituents on Ligand-to-Ligand Charge Transfer Energy in Distorted Octahedral Tin(IV) Complexes with 3,6-Di‑tert‑butyl‑o‑benzoquinone and Diimines","authors":"A. V. Klimashevskaya, M. A. Zherebtsov, R. V. Rumyantsev, I. A. Yakushev, P. V. Dorovatovskii, A. V. Piskunov","doi":"10.1134/S1070328426600403","DOIUrl":"10.1134/S1070328426600403","url":null,"abstract":"<p>New dihalogenotin(IV) complexes with 3,6-di-<i>tert-</i>butyl-<i>o</i>-benzoquinone and diimine ligands, pyrazino[2,3-f][1,10]phenanthroline (DPQ) and dipyrido[3,2-a:2'3'-с]phenazine (DPPZ), are synthesized and structurally characterized. The complexes have the distorted octahedral coordination environment in which the catecholate and diimine ligands are mutually <i>cis</i>-oriented. The electronic absorption spectra of the synthesized compounds exhibit the charge-transfer bands between the donor catecholate and acceptor nitrogen-containing ligands in the range of 400–650 nm causing their intense color. The position of the maximum in the absorption spectra depends on the nature of the halogen substituent and extent of π-conjugation of the diimine ligand. The reaction of the starting 3,6-di-<i>tert</i>-butylcatecholatodichloridotin(IV) complex with 2,2'-azobis(pyridine) is accompanied by a complete two-electron transfer from the catecholate ligands to the nitrogen-containing ligand with the formation of the biradical binuclear system. An analysis of the absorption spectrum demonstrates a series of electronic transitions in a range of 700–1400 nm attributed to the charge transfer between the organic ligands of the complex.</p>","PeriodicalId":759,"journal":{"name":"Russian Journal of Coordination Chemistry","volume":"52 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148838310","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}
T. S. Kotel’nikova, T. G. Cherkasova, N. V. Pervukhina, N. V. Kuratieva, D. A. Barantsev, E. E. Korotina
{"title":"Coordination Compounds of Gadolinium and Terbium with N-Oxide of Nicotinic Acid Anion: Synthesis and Crystal Structures","authors":"T. S. Kotel’nikova, T. G. Cherkasova, N. V. Pervukhina, N. V. Kuratieva, D. A. Barantsev, E. E. Korotina","doi":"10.1134/S1070328426600506","DOIUrl":"10.1134/S1070328426600506","url":null,"abstract":"<p>New coordination compounds of lanthanides(III) with N-oxide of nicotinate anion (1-oxidopyridin-1-ium-3-carboxylate anion) [Ln(NNO)(H<sub>2</sub>O)<sub>5</sub>]Cl<sub>2</sub>·H<sub>2</sub>O, where Ln = Gd (<b>I</b>) and Tb (<b>II</b>), and NNO = nicotinate anion N-oxide (C<sub>6</sub>H<sub>4</sub>NO<sub>3</sub>), are synthesized and characterized. The compounds are prepared by the reactions of lanthanide chlorides with nicotinic acid N-oxide in ethanol on reflux. The compositions and structures of the complexes are confirmed by the elemental analysis, IR spectroscopy, and X-ray diffraction (XRD) data. Complexes <b>I</b> and <b>II</b> are found by XRD to be isostructural and crystallize in the monoclinic crystal system (space group <i>P</i>2<sub>1</sub>/<i>n</i>). The unit cell parameters for complex <b>I</b> are the following: <i>a</i> = 11.0963(3), <i>b</i> = 10.3399(3), <i>c</i> = 13.1766(4) Å, β = 112.666(1)°, <i>V</i> = 1395.05 Å<sup>3</sup>; and those for complex <b>II</b> are the following: <i>a</i> = 11.0659(3), <i>b</i> = 10.3196(2), <i>c</i> = 13.1580(3) Å, β = 112.576(1)°, <i>V</i> = 1387.44 Å<sup>3</sup>. The coordination spheres of the Gd (<b>I</b>) and Tb (<b>II</b>) atoms are formed by five water molecules and four oxygen molecules of four NNO ligands that act as bridging units binding lanthanide atoms into a dimer. The N-oxide and carboxylate groups of the ligands participate in the formation of coordination layers in the family of {011} planes. The chloride ions and molecules of water of crystallization involved in the formation of the framework bound via hydrogen bonds of the O(<i>w</i>)–H···Cl and O(<i>w</i>)–H···O(<i>w</i>) type are arranged between the layers.</p>","PeriodicalId":759,"journal":{"name":"Russian Journal of Coordination Chemistry","volume":"52 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148838298","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}
A. S. Chistyakov, M. A. Shmelev, K. A. Babeshkin, A. A. Levina, N. N. Efimov, A. A. Sidorov, I. L. Eremenko
{"title":"Influence of the N-Donor Ligand Nature on the Structure of the Dysprosium Pentafluorobenzoate Complexes","authors":"A. S. Chistyakov, M. A. Shmelev, K. A. Babeshkin, A. A. Levina, N. N. Efimov, A. A. Sidorov, I. L. Eremenko","doi":"10.1134/S1070328426600373","DOIUrl":"10.1134/S1070328426600373","url":null,"abstract":"<p>The influence of the nature of the N<i>-</i>donor ligand (2,2'-bipyridyl, 1,10-phenanthroline, bathophenanthroline, 2,2':6',2'':6'',2'''-tetrapyridine, 4,4'-bipyridyl, and <i>N-</i>phenyl-<i>ortho</i>-phenylenediamine) on the compositions and structures of the Dy<sup>3+</sup> pentafluorobenzoate (pfb) complexes is studied. The variation of the ligands or initial reagent ratio allows the preparation of both binuclear and mononuclear complexes, as well as coordination polymers. When using <i>N-</i>phenyl-<i>ortho</i>-phenylenediamine as an N<i>-</i>donor ligand, the dimerization occurs to form cation of (3-amino-10-phenylphenazin-2-ylidene)benzenaminium (L) in the coordination compound [Dy<sub>2</sub>(L)(pfb)<sub>7</sub>]<sub><i>n</i></sub>·3<i>n</i>MeCN. The synthesized compounds are characterized by single-crystal and phase X-ray diffraction (XRD) analyses, IR spectroscopy, and CHN analysis. The magnetic properties of the binuclear [Dy<sub>2</sub>(MeOH)<sub>2</sub>(phen)<sub>2</sub>(pfb)<sub>6</sub>] complex are studied in detail. The crystal packings of all synthesized compounds are stabilized by numerous noncovalent contacts π···π, C–F···π, and C–H···F.</p>","PeriodicalId":759,"journal":{"name":"Russian Journal of Coordination Chemistry","volume":"52 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699649","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}
K. A. Koshenskova, L. S. Razvorotneva, F. M. Dolgushin, M. A. Shmelev, I. L. Eremenko, I. A. Lutsenko
{"title":"Zinc(II) Complexes with 5-Nitro-2-furancarboxylic Acid and Pyridines: Synthesis, Crystal Structures, Specific Features of Behavior in Solutions, and Antibacterial Properties","authors":"K. A. Koshenskova, L. S. Razvorotneva, F. M. Dolgushin, M. A. Shmelev, I. L. Eremenko, I. A. Lutsenko","doi":"10.1134/S1070328426600348","DOIUrl":"10.1134/S1070328426600348","url":null,"abstract":"<p>The reactions of zinc(II) acetate with 5-nitro-2-furancarboxylic acid (Hnfur) and pyridine ligands (pyridine (py) and 4-phenylpyridine (phpy)) afford molecular mononuclear [Zn(nfur)<sub>2</sub>(H<sub>2</sub>O)<sub>4</sub>] (<b>I</b>), [Zn(nfur)<sub>2</sub>(py)<sub>2</sub>] (<b>II</b>) and binuclear [Zn<sub>2</sub>(nfur)<sub>4</sub>(phpy)<sub>2</sub>] (<b>III</b>) complexes and ionic complex [Zn(phpy)<sub>2</sub>(H<sub>2</sub>O)<sub>4</sub>]<sup>2+</sup>[nfur<sup>–</sup>]<sub>2</sub>·3H<sub>2</sub>O (<b>IV</b>). Their structures are solved by X-ray diffraction (XRD): the Zn<sup>2+</sup> cation lies in the octahedral (<b>I</b> and <b>IV</b>), tetrahedral (<b>II</b>), and square pyramidal (<b>III</b>) environments. The crystal packings of complexes <b>I</b>–<b>IV</b> are stabilized due to the branched system of intermolecular interactions including intra- and intermolecular hydrogen bonds O–H…O and C–H…O, as well as additional nonvalent contacts and π–π stacking between the aromatic and heterocyclic systems. The hydrogen-bound framework prevails in the structures of complexes <b>I</b>, <b>II</b>, and <b>IV</b>, whereas in complex <b>III</b> the main contribution to packing stabilization is made by π–π interactions and weak C–H…O contacts. According to the ultraviolet–visible (UV–VIS) spectroscopy data, physiological solutions of complexes <b>I</b>–<b>IV</b> retain stability for 48 h. The coordination of the ligands to the metal is retained for complex <b>I</b>, whereas the dissociation of the ligands with the formation of aqua complexes [Zn(L)<sub>2</sub>(H<sub>2</sub>O)<sub>4</sub>]<sup>2+</sup> is revealed for complexes <b>II</b> and <b>III</b>. The biological activity of complexes <b>I</b>–<b>IV</b> is studied in vitro against <i>Mycolicibacterium smegmatis</i> strains (model for bacillus Kochii) and <i>Lactobacillus brevis</i> lactic bacteria. The studies of the antimicrobial activity against a series of Gram-positive and Gram-negative bacteria are carried out for complex <b>II</b>.</p>","PeriodicalId":759,"journal":{"name":"Russian Journal of Coordination Chemistry","volume":"52 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1070328426600348.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Heterobimetallic FeMg2 Coordination Polymer for Degradation of Methyl Orange and Removing Pb2+ from Polluted Water","authors":"S. Y. Wang, X. F. Wang, J. Z. Wang, S. Jin","doi":"10.1134/S107032842660021X","DOIUrl":"10.1134/S107032842660021X","url":null,"abstract":"<p>The heterobimetallic coordination polymer [FeMg<sub>2</sub>O(DTPA)]<sub><i>n</i></sub>·<i>n</i>H<sub>2</sub>O (<b>I</b>) (DTPA = diethylenetriaminepentaacetic acid) was synthesized under mild conditions and demonstrated dual functionality for degrading Methyl Orange as well as adsorbing Pb<sup>2+</sup>. The structure features three metal atoms with distinct coordination environments, including Fe(DTPA)<sup>2–</sup> units anchored to a magnesium chain framework. The observed catalytic activity suggests that the steric hindrance around the iron center as the catalytic active site may play a key role in modulating the degradation efficiency. For Pb<sup>2+</sup> adsorption, the coordination polymer follows pseudo-second-order kinetics, indicating a chemisorption mechanism. Furthermore, the adsorption behavior is consistent with the Langmuir model, suggesting monolayer adsorption on a homogeneous surface. This study on the structure-property relationship of <b>I</b> offers valuable insights for the rational design of functional complexes, potentially inspiring new strategies for efficient wastewater treatment.</p>","PeriodicalId":759,"journal":{"name":"Russian Journal of Coordination Chemistry","volume":"52 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699619","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}
{"title":"Multielectron Atoms","authors":"A. N. Gusev","doi":"10.1134/S1070328425601566","DOIUrl":"10.1134/S1070328425601566","url":null,"abstract":"<p>This article describes modern approaches to the description of the electronic structure of multielectron atoms. The problem of solving the Schrödinger equation for systems containing two or more electrons is discussed. Approaches to the approximate solution of the Schrödinger equation and the features of electron distribution among atomic orbitals in multielectron atoms are considered. The concept of an atomic term and methods for its determination are also discussed.</p>","PeriodicalId":759,"journal":{"name":"Russian Journal of Coordination Chemistry","volume":"52 :","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699793","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}