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Автор: Grafiati

Опубліковано: 7 липня 2024

Оновлено: 7 липня 2024

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1

Avdeeva, Varvara V., Svetlana E. Nikiforova, Elena A. Malinina, Igor B. Sivaev, and Nikolay T. Kuznetsov. "Composites and Materials Prepared from Boron Cluster Anions and Carboranes." Materials 16, no. 18 (September 6, 2023): 6099. http://dx.doi.org/10.3390/ma16186099.

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Here, we present composites and materials that can be prepared starting with boron hydride cluster compounds (decaborane, decahydro-closo-decaborate and dodecahydro-closo-dodecaborate anions and carboranes). Recent examples of their utilization as boron protective coatings including using them to synthesize boron carbide, boron nitride, metal borides, metal-containing composites, and neutron shielding materials are discussed. The data are generalized demonstrate the versatile application of materials based on boron cluster anions and carboranes in various fields.

2

Shmal’ko, A. V., and I. B. Sivaev. "Chemistry of Carba-closo-decaborate Anions [CB9H10]– (Review)." Russian Journal of Inorganic Chemistry 64, no. 14 (December 2019): 1726–49. http://dx.doi.org/10.1134/s0036023619140067.

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3

Avdeeva, Varvara V., Grigoriy A. Buzanov, Elena A. Malinina, Nikolay T. Kuznetsov, and Anna V. Vologzhanina. "Silver(I) and Copper(I) Complexation with Decachloro-Closo-Decaborate Anion." Crystals 10, no. 5 (May 10, 2020): 389. http://dx.doi.org/10.3390/cryst10050389.

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A series of complexation reactions of silver(I) and copper(I) in the presence of a polyhedral weakly coordinating [B10Cl10]2− anion has been carried out. The effect of the solvent and the presence of Ph3P on the composition and structure of the reaction product were studied. Eight novel complexes were obtained and characterized by 11B Nuclear magnetic resonance, Infra-Red, and Raman spectroscopies as well as powder and single-crystal X-ray diffraction techniques. The [B10Cl10]2− anion demonstrated weaker coordinating ability towards coinage metals than [B10H10]2− at similar reaction conditions. The [B10Cl10]2− anion remains unreacted in the copper(I) complexation reaction, while in the absence of competing ligands, we obtained the first complexes containing decachloro-closo-decaborate anion directly coordinated by the metal atom. The bonding between metal atoms and the boron cluster anions was studied using the atomic Hirshfeld surfaces. Besides edge and face coordination of the polyhedral anion, this method allowed us to reveal the Ag–Ag bond in crystal of {Ag2(DMF)2[B10Cl10]}n, the presence of which was additionally supported by the Raman spectroscopy data.

4

Golubev, Aleksei V., Alexey S. Kubasov, Alexander Yu Bykov, Andrey P. Zhdanov, Grigorii A. Buzanov, Alexander A. Korlyukov, Konstantin Yu Zhizhin, and Nikolay T. Kuznetsov. "Non-Covalent Interactions in the Crystal Structures of Perbrominated Sulfonium Derivatives of the closo-Decaborate Anion." International Journal of Molecular Sciences 23, no. 19 (October 10, 2022): 12022. http://dx.doi.org/10.3390/ijms231912022.

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A new series of compounds based on perbrominated disubstituted sulfonium derivatives of the closo-decaborate anion (n-Bu4N)[2-B10Br9SR2] (R = n-Pr, i-Pr, n-Bu, n-C8H17, n-C12H25, n-C18H37) was obtained, characterised by modern physicochemical methods of analysis. According to the results of an X-ray diffraction study, some of the anions and solvate molecules were disordered. The cations (n-Bu4N)+ and anions [2-B10Br9SR2]− were associated via C-H…Br and H…H contacts. In addition, Br…Br interactions between anions were revealed. The role of these contacts was analysed in terms of Hirshfeld surface analysis, QTAIM theory and the NCI method using quantum chemical calculations. An increase in the size of the alkyl R moiety led to significant strengthening of the total energy of H…H interactions. In the case of R = -n-C18H37, a parallel mutual orientation of alkyl moieties was established that was similar to the packing of salts of fatty acids. The nature of C-H…Br and Br…Br interionic interactions was found to be attractive, in contrast to the repulsive nature of intermolecular Br…Br interactions.

5

Prikaznov, A. V., Yu N. Las’kova, A. A. Semioshkin, I. B. Sivaev, A. V. Kisin, and V. I. Bregadze. "Synthesis of boron-containing tyrosine derivatives based on the closo-decaborate and closo-dodecaborate anions." Russian Chemical Bulletin 60, no. 12 (December 2011): 2550–54. http://dx.doi.org/10.1007/s11172-011-0392-4.

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6

Klyukin, Ilya N., Anastasia V. Kolbunova, Alexander S. Novikov, Alexey V. Nelyubin, Andrey P. Zhdanov, Alexey S. Kubasov, Nikita A. Selivanov, Alexander Yu Bykov, Konstantin Yu Zhizhin, and Nikolay T. Kuznetsov. "Synthesis of Disubstituted Carboxonium Derivatives of Closo-Decaborate Anion [2,6-B10H8O2CC6H5]−: Theoretical and Experimental Study." Molecules 28, no. 4 (February 13, 2023): 1757. http://dx.doi.org/10.3390/molecules28041757.

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A comprehensive study focused on the preparation of disubstituted carboxonium derivatives of closo-decaborate anion [2,6-B10H8O2CC6H5]− was carried out. The proposed synthesis of the target product was based on the interaction between the anion [B10H11]− and benzoic acid C6H5COOH. It was shown that the formation of this product proceeds stepwise through the formation of a mono-substituted product [B10H9OC(OH)C6H5]−. In addition, an alternative one-step approach for obtaining the target derivative is postulated. The structure of tetrabutylammonium salts of carboxonium derivative ((C4H9)4N)[2,6-B10H8O2CC6H5] was established with the help of X-ray structure analysis. The reaction pathway for the formation of [2,6-B10H8O2CC6H5]− was investigated with the help of density functional theory (DFT) calculations. This process has an electrophile induced nucleophilic substitution (EINS) mechanism, and intermediate anionic species play a key role. Such intermediates have a structure in which one boron atom coordinates two hydrogen atoms. The regioselectivity for the process of formation for the 2,6-isomer was also proved by theoretical calculations. Generally, in the experimental part, the simple and available approach for producing disubstituted carboxonium derivative was introduced, and the mechanism of this process was investigated with the help of theoretical calculations. The proposed approach can be applicable for the preparation of a wide range of disubstituted derivatives of closo-borate anions.

7

Matveev, Evgenii Yu, Varvara V. Avdeeva, Alexey S. Kubasov, Konstantin Yu Zhizhin, Elena A. Malinina, and Nikolay T. Kuznetsov. "Synthesis and Structures of Lead(II) Complexes with Hydroxy-Substituted Closo-Decaborate Anions." Inorganics 11, no. 4 (March 28, 2023): 144. http://dx.doi.org/10.3390/inorganics11040144.

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Mixed-ligand lead(II) complexes with 2,2′-bipyridyl and [B10H9OH]2− or monosubstituted hydroxy-substituted closo-decaborate anions with a pendant hydroxy group, separated from the boron cage by an alkoxylic spacer of different lengths [B10H9O(CH2)xO(CH2)2OH]]2− (x = 2 or 5) have been synthesized. Compounds have been characterized by IR and multinuclear NMR spectroscopies. The structures of binuclear complex [Pb(bipy)2[B10H9OH]]2·CH3CN (1·CH3CN), mononuclear complex [Pb(bipy)2[B10H9O(CH2)2O(CH2)2OH]]·0.5bipy·CH3CN (2·0.5bipy·CH3CN), and polymeric complex [Pb(bipy)[B10H9O(CH2)5O(CH2)2OH]]n (3) have been determined by single-crystal X-ray diffraction. In all three compounds, the co-ordination polyhedra of lead(II) are formed by N atoms from two bipy molecules, O atoms of the substituent attached to the boron cage, and BH groups of the boron cage.

8

Nelyubin, A. V., N. A. Selivanov, A. Yu Bykov, I. N. Klyukin, A. S. Kubasov, A. P. Zhdanov, K. Yu Zhizhin, and N. T. Kuznetsov. "New Method for Synthesis of N-Borylated Amino Acids Based on closo-Decaborate and closo-Dodecaborate Anions." Russian Journal of Inorganic Chemistry 67, no. 11 (October 25, 2022): 1776–84. http://dx.doi.org/10.1134/s0036023622601106.

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9

Bareiß, Kevin U., Fabian M. Kleeberg, David Enseling, Thomas Jüstel, and Thomas Schleid. "Tl₂[B₁₀H₁₀] und Tl₂[B₁₂H₁₂]: Kristallstrukturen, Raman-Spektren und Tl⁺-Lone-Pair-Lumineszenz im Vergleich." Zeitschrift für Naturforschung B 77, no. 2-3 (February 21, 2022): 179–87. http://dx.doi.org/10.1515/znb-2022-0007.

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Abstract Thallium(I) decahydro-closo-decaborate Tl2[B10H10] and thallium(I) dodecahydro-closo-dodecaborate Tl2[B12H12] are readily available as microcrystalline powders from reactions of thallium(I) carbonate Tl2[CO3] with aqueous solutions of the respective free acid (H3O)2[B10H10] or (H3O)2[B12H12]. Tl2[B12H12] crystallizes with an anti-fluorite related structure (cubic, F m 3 ‾ $Fm\bar{3}$ , a = 1074.23(8) pm, Z = 4). Each Tl+ cation is coordinated by four icosahedral [B12H12]2– anions (d(B–B) = 180–181 pm) providing a twelvefold coordination sphere of hydrogen atoms (d(Tl–H) = 296 pm). Tl2[B10H10] crystallizes monoclinically in the space group P21/n with a = 704.03(5), b = 1111.45(8), c = 1281.16(9) pm and β = 94.912(3)° for Z = 4. The bicapped square antiprismatic [B10H10]2– anions (d(B–B) = 147–176 pm to the two apical boron atoms, d(B–B) = 161–199 pm within the corpus) again form distorted tetrahedra around the (Tl1)+, but square pyramids around the (Tl2)+ cations. Thus (Tl1)+ is coordinated by 12 hydrogen atoms (d(Tl1–H) = 275–315 pm), but (Tl2)+ only by 11 of them (d(Tl2–H) = 267–357 pm). Both compounds show a greenish-yellow photoluminescence caused by an interconfigurational 6sp –6s 2 emission (3Pn→1S0, n = 0–2) at the Tl+ cation.

10

Mindich, Aleksey L., Nadezhda A. Bokach, Maxim L. Kuznetsov, Galina L. Starova, Andrey P. Zhdanov, Konstantin Yu Zhizhin, Serguei A. Miltsov, Nikolay T. Kuznetsov, and Vadim Yu Kukushkin. "Borylated Tetrazoles from Cycloaddition of Azide Anions to Nitrilium Derivatives of closo-Decaborate Clusters." Organometallics 32, no. 21 (October 10, 2013): 6576–86. http://dx.doi.org/10.1021/om400892x.

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11

Matveev, E. Yu, S. S. Novikov, V. Ya Levitskaya, A. I. Nichugovskiy, I. E. Sokolov, K. Yu Zhizhin, and N. T. Kuznetsov. "Interaction of the anion [2-B<sub>10</sub>H<sub>9</sub>O(CH<sub>2</sub>)<sub>4</sub>O]− with secondary amines." Fine Chemical Technologies 17, no. 5 (November 20, 2022): 427–38. http://dx.doi.org/10.32362/2410-6593-2022-17-5-427-438.

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Objectives. One of the most promising methods of treating malignant tumors is 10B-neutron capture therapy. While compounds based on cluster boron anions [BnHn]2− (n = 10, 12) are often used as boron-containing agents due to the very high specific concentration of boron atoms per particle, the use of such compounds is associated with the need to develop new methods for the functionalization of boron clusters associated with the production of boron-containing derivatives containing biologically active functional groups. One of the most convenient methods of modification of [BnHn]2− (n = 10, 12) anions is the interaction of their derivatives containing cyclic oxonium-type substituents with negatively charged or neutral nucleophilic reagents. The disclosure of substituents of this type leads to the formation of closo-borates with functional groups separated from the cluster by an alkoxyl spacer chain. The purpose of this study is to develop methods for the synthesis of derivatives of the closo-decaborate anion [B10H10]2− with pendant nitrogen-containing groups.Methods. The general control of the reactions of the disclosure of cyclic substituents was carried out on the basis of 11B nuclear magnetic resonance (NMR) spectroscopy data. The structure of the obtained derivatives, including the nature of the attached functional groups, was determined using 1H, 13C attached proton test (APT) NMR and infrared (IR) spectroscopy data. The molecular weight of the synthesized compounds was confirmed by electrospray ionization mass-spectrometry (ESI–MS).Results. The interaction of the anion [2-B10H9O(CH2)4O]− with secondary amines (dimethylamine, dipropylamine, diallylamine, dibutylamine, diisobutylamine, morpholine, di-sec-butylamine) in an ethanol environment is investigated. As a result of the reactions, a cyclic substituent is shown to expand with the addition of a nucleophilic reagent. Seven new derivatives of the closodecaborate anion with pendant nitrogen-containing groups have been synthesized.Conclusions. A developed method for obtaining closo-decaborates with ammonium groups separated from the boron cluster by an alkoxyl spacer group is presented. It is shown that the use of amines of various structures does not fundamentally affect the course of the reactions, allowing the composition and structure of the target derivatives to be effectively regulated. The resulting compounds can be involved in further modification reactions due to a reactive pendant group, as well as being suitable for use as effective polydentate ligands. Closo-decaborates with pendant nitrogen-containing groups and their derivatives are of considerable interest in the synthesis of compounds for use in 10B-neutron capture therapy of malignant tumors.

12

Shubina, E. S., E. V. Bakhmutova, A. M. Filin, I. B. Sivaev, L. N. Teplitskaya, A. L. Chistyakov, I. V. Stankevich, V. I. Bakhmutov, V. I. Bregadze, and L. M. Epstein. "Dihydrogen bonding of decahydro-closo-decaborate(2−) and dodecahydro-closo-dodecaborate(2−) anions with proton donors: experimental and theoretical investigation." Journal of Organometallic Chemistry 657, no. 1-2 (September 2002): 155–62. http://dx.doi.org/10.1016/s0022-328x(02)01380-3.

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13

Kubasov, A. S., E. S. Turishev, A. V. Golubev, A. Yu Bykov, K. Yu Zhizhin, and N. T. Kuznetsov. "The method for synthesis of 2-sulfonium closo-decaborate anions derivatives with exo-polyhedral aminogroups." Inorganica Chimica Acta 507 (July 2020): 119589. http://dx.doi.org/10.1016/j.ica.2020.119589.

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14

Nelyubin, A. V., I. N. Klyukin, A. P. Zhdanov, M. S. Grigor’ev, K. Yu Zhizhin, and N. T. Kuznetsov. "Synthesis of Nitrile Derivatives of the closo-Decaborate and closo-Dodecaborate Anions [BnHn – 1NCR]– (n = 10, 12) by a Microwave Method." Russian Journal of Inorganic Chemistry 66, no. 2 (February 2021): 139–45. http://dx.doi.org/10.1134/s0036023621020133.

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15

Kubasov, Alexey S., Evgeniy S. Turyshev, Ivan V. Novikov, Olga M. Gurova, Polina A. Starodubets, Aleksei V. Golubev, Konstantin Yu Zhizhin, and Nikolay T. Kuznetsov. "Theoretical and experimental comparison of the reactivity of the sulfanyl-closo-decaborate and sulfanyl-closo-dodecaborate anions and their mono-S-substituted derivatives." Polyhedron 206 (September 2021): 115347. http://dx.doi.org/10.1016/j.poly.2021.115347.

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16

Kim, Sangryun, Kazuaki Kisu, and Shin-ichi Orimo. "Stabilization of Superionic-Conducting High-Temperature Phase of Li(CB9H10) via Solid Solution Formation with Li2(B12H12)." Crystals 11, no. 4 (March 25, 2021): 330. http://dx.doi.org/10.3390/cryst11040330.

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We report the stabilization of the high-temperature (high-T) phase of lithium carba-closo-decaborate, Li(CB9H10), via the formation of solid solutions in a Li(CB9H10)-Li2(B12H12) quasi-binary system. Li(CB9H10)-based solid solutions in which [CB9H10]− is replaced by [B12H12]2− were obtained at compositions with low x values in the (1−x)Li(CB9H10)−xLi2(B12H12) system. An increase in the extent of [B12H12]2− substitution promoted stabilization of the high-T phase of Li(CB9H10), resulting in an increase in the lithium-ion conductivity. Superionic conductivities of over 10−3 S cm−1 were achieved for the compounds with 0.2 ≤ x ≤ 0.4. In addition, a comparison of the Li(CB9H10)−Li2(B12H12) system and the Li(CB9H10)−Li(CB11H12) system suggests that the valence of the complex anions plays an important role in the ionic conduction. In battery tests, an all-solid-state Li–TiS2 cell employing 0.6Li(CB9H10)−0.4Li2(B12H12) (x = 0.4) as a solid electrolyte presented reversible battery reactions during repeated discharge–charge cycles. The current study offers an insight into strategies to develop complex hydride solid electrolytes.

17

Malinina, Elena A., Anna V. Vologzhanina, Varvara V. Avdeeva, Lyudmila V. Goeva, Nikolay N. Efimov, Elena A. Ugolkova, Vadim V. Minin, and Nikolay T. Kuznetsov. "Structures, magnetic properties, and EPR studies of tetranuclear copper(II) complexes [Cu4(OH)4L4]4+ (L = bpa, bipy) stabilized by anions containing decahydro-closo-decaborate anion." Polyhedron 183 (June 2020): 114540. http://dx.doi.org/10.1016/j.poly.2020.114540.

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18

Yakimanskiy, Anton A., Ksenia I. Kaskevich, Tatiana G. Chulkova, Elena L. Krasnopeeva, Serguei V. Savilov, Vera V. Voinova, Nikolay K. Neumolotov, et al. "Effect of Complexation with Closo-Decaborate Anion on Photophysical Properties of Copolyfluorenes Containing Dicyanophenanthrene Units in the Main Chain." Micro 3, no. 4 (November 30, 2023): 930–40. http://dx.doi.org/10.3390/micro3040063.

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The functionalization of copolyfluorenes containing dicyanophenanthrene units by closo-decaborate anion is described. Target copolyfluorenes were analyzed using SEM, UV-vis, luminescence, NMR, and Fourier-transform infrared (FTIR) spectroscopy. The effect of complexation with the closo-decaborate anion on the photophysical properties was studied both experimentally and theoretically. The PL data indicate an efficient charge transfer from fluorene to the dicyanophenanthrene units coordinated to the closo-decaborate. The coordination of closo-decaborate clusters to the nitrile groups of copolyfluorenes provides an important route to new materials for sensors and light-emitting devices while, at the same time, serving as a platform for further study of the nature of boron clusters.

19

Prikaznov, Alexander V., Vikentii I. Bragin, Margarita N. Davydova, Igor B. Sivaev, and Vladimir I. Bregadze. "Synthesis of Alkoxy Derivatives of Decahydro-closo-decaborate Anion." Collection of Czechoslovak Chemical Communications 72, no. 12 (2007): 1689–96. http://dx.doi.org/10.1135/cccc20071689.

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Synthesis of alkoxy derivatives of closo-decaborate anion [1- and 2-B10H9OR]2- by reaction of the hydroxy derivatives with corresponding alkyl bromides was described. A new method of synthesis of 2-hydroxy derivative of closo-decaborate anion [2-B10H9OH]2- was proposed.

20

Sivaev, Igor B., Alexander V. Prikaznov, and Daoud Naoufal. "Fifty years of the closo-decaborate anion chemistry." Collection of Czechoslovak Chemical Communications 75, no. 11 (2010): 1149–99. http://dx.doi.org/10.1135/cccc2010054.

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The review covers the fifty-year period of chemistry of the closo-decaborate anion [B10H10]2– from the first report by Hawthorne and Pitochelli. The main attention is paid to reactions of substitution of various atoms and groups for hydrogen atoms. The general stability of the closo-decaborate cage, including its protonation, cage-opening and cage oxidation reactions, is considered as well. A review with 242 references.

21

Shmal’ko, Akim V., Paula Cendoya, Sergey A. Anufriev, Kyrill Yu Suponitsky, Detlef Gabel, and Igor B. Sivaev. "New approaches to the functionalization of the 1-carba-closo-decaborate anion." Chemical Communications 58, no. 23 (2022): 3775–78. http://dx.doi.org/10.1039/d1cc06395b.

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22

Sivaev, Igor B., Vikentii I. Bragin, Alexander V. Prikaznov, Pavel V. Petrovskii, Vladimir I. Bregadze, Oleg A. Filippov, Tatyana A. Teplinskaya, Alexei A. Titov, and Elena S. Shubina. "Study of Proton-Deuterium Exchange in Ten-Vertex Boron Hydrides." Collection of Czechoslovak Chemical Communications 72, no. 12 (2007): 1725–39. http://dx.doi.org/10.1135/cccc20071725.

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The effect of electron-donating and electron-withdrawing substituents on the proton-deuterium exchange in derivatives of the closo-decaborate anion in methanol-d4 was studied. Introduction of the electron-donating hydroxy (alkoxy) group into the apical position of the boron cage strongly promotes the H-D exchange at the antipodal apical vertex, whereas introduction of the electron-withdrawing diazonium group stops the H-D exchange completely. The general order of the proton-deuterium exchange in equatorially-substituted derivatives [2-B10H9R]n- is 10 > 1 >> 7,8 > 4 > 3,5 ≈ 6,9. Formation of dihydrogen bonds between 1- and 2-hydroxy derivatives of the closo-decaborate anion and alcohols was investigated and their possible role in the H-D exchange was discussed.

23

Matveev, E. Yu, I. P. Limarev, A. I. Nichugovskii, A. Yu Bykov, K. Yu Zhizhin, and N. T. Kuznetsov. "Derivatives of closo-Decaborate Anion with Polyamines." Russian Journal of Inorganic Chemistry 64, no. 8 (August 2019): 977–83. http://dx.doi.org/10.1134/s0036023619080084.

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24

Avdeeva, V. V., A. S. Kubasov, S. E. Nikiforova, L. V. Goeva, E. A. Malinina, and N. T. Kuznetsov. "Ligand Metathesis in Nickel(II) Complexation with closo-Decaborate Anion." Координационная химия 49, no. 6 (June 1, 2023): 333–40. http://dx.doi.org/10.31857/s0132344x22600576.

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Nickel(II) complexation with the closo-decaborate anion in water and acetonitrile is studied. Complexes [Ni(solv)6][B10H10] (solv = H2O (I) or CH3CN (II)) are isolated. The complexes are characterized by elemental analysis and IR spectroscopy. Complex [Ni(CH3CN)5(H2O)]0.75[Ni(CH3CN)4(H2O)2]0.25[B10H10]·0.5H2O (III) is isolated from an acetonitrile–water system. The structure of complex III is solved by X-ray diffraction (XRD) (CIF file CCDС no. 2224702). A mechanism of ligand metathesis in the complexation of nickel(II) is proposed.

25

Matveev, E. Yu, S. S. Akimov, A. S. Kubasov, V. M. Retivov, K. Yu Zhizhin, and N. T. Kuznetsov. "THE METHOD FOR OBTAINING A DERIVATIVE CLOSO-DECABORATE ANION WITH PENDANTE DTPA-GROUP." Fine Chemical Technologies 14, no. 1 (February 28, 2019): 59–65. http://dx.doi.org/10.32362/2410-6593-2019-14-1-59-65.

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This paper describes the method for obtaining a new derivative of the closo-decaborate anion with diethylenetriaminepentaacetic acid (DTPA) as a pendant group attached to the boron cluster through an alkoxyl spacer chain. This derivative is formed by the interaction of 1,4-dioxane derivative of the anion [B10H10]2- with DTPA potassium salt in an aqueous medium. As a result of the reaction, an exo-polyhedral cyclic substituent is opened, and then the addition of a polyfunctional group through an oxygen atom occurs. The synthesized compound is in fact an effective polydentate ligand capable of coordinating to the complexing agent both due to the donor atoms of the attached DTPA fragment and through the formation of three-center two-electron bonds. The obtained compound interacts with gadolinium(III) carbonate forming a complex of the composition [Gd2B10H9O2C4H8(dtpa)]·3H2O. The synthesized substances were studied by IR spectroscopy, polynuclear (11B, 13C and 1H) NMR spectroscopy, ESI mass spectrometry, elemental and thermographic analysis. closo-Decaborate with the pendant DTPA group is of interest in 10B neutron capture therapy of malignant tumors due to the high content of boron atoms and a convenient way of their transport to the affected cells. The obtained boron-containing derivatives of gadolinium(III) can act as drugs of combined action, because they can perform, in addition to the above described therapeutic function, the diagnostic function due to the presence of gadolinium atoms int hem.

26

Avdeeva, V. V., E. A. Malinina, K. Yu Zhizhin, and N. T. Kuznetsov. "Salts and Complexes Containing the Decachloro-closo-Decaborate Anion." Russian Journal of Coordination Chemistry 47, no. 8 (August 2021): 519–45. http://dx.doi.org/10.1134/s1070328421080017.

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27

Avdeeva, Varvara V., Elena A. Malinina, and Nikolay T. Kuznetsov. "Isomerism in complexes with the decahydro- closo -decaborate anion." Polyhedron 105 (February 2016): 205–21. http://dx.doi.org/10.1016/j.poly.2015.11.049.

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28

Malinina, E. A., V. V. Drozdova, I. N. Polyakova, and N. T. Kuznetsov. "Anionic Complexes of Cu(I) with the Closo-Decaborate Anion." Russian Journal of Inorganic Chemistry 53, no. 2 (February 2008): 197–201. http://dx.doi.org/10.1134/s0036023608020083.

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29

Zhdanova, Kseniya A., Andrey P. Zhdanov, Artem V. Ezhov, Artem N. Fakhrutdinov, Natal’ya A. Bragina, Konstantin Yu Zhizhin, Nikolay T. Kuznetsov, and Andrey F. Mironov. "Synthesis and properties of meso-arylporphyrin – closo-decaborate anion conjugates." Macroheterocycles 7, no. 4 (2014): 394–400. http://dx.doi.org/10.6060/mhc140494z.

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30

Prikaznov, Alexander V., Akim V. Shmal’ko, Igor B. Sivaev, Pavel V. Petrovskii, Vikentii I. Bragin, Alexander V. Kisin, and Vladimir V. Bregadze. "Synthesis of carboxylic acids based on the closo-decaborate anion." Polyhedron 30, no. 9 (May 2011): 1494–501. http://dx.doi.org/10.1016/j.poly.2011.02.055.

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31

Avdeeva, V. V., A. S. Kubasov, S. E. Nikiforova, L. V. Goeva, E. A. Malinina, and N. T. Kuznetsov. "Ligand Metathesis in Nickel(II) Complexation with closo-Decaborate Anion." Russian Journal of Coordination Chemistry 49, no. 6 (June 2023): 338–44. http://dx.doi.org/10.1134/s1070328423600171.

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32

Drozdova, V. V., M. V. Lisovskii, I. N. Polyakova, K. Yu Zhizhin, and N. T. Kuznetsov. "Interaction of closo-decaborate anion B10H 10 2− with iminium salts." Russian Journal of Inorganic Chemistry 51, no. 10 (October 2006): 1552–60. http://dx.doi.org/10.1134/s003602360610007x.

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33

Bragin, Vikentii I., Igor B. Sivaev, Vladimir I. Bregadze, and Natal’ya A. Votinova. "Synthesis of the 1-hydroxy-closo-decaborate anion [1-B10H9OH]2−." Journal of Organometallic Chemistry 690, no. 11 (June 2005): 2847–49. http://dx.doi.org/10.1016/j.jorganchem.2005.01.053.

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34

Zhizhin, K. Yu, A. P. Zhdanov, and N. T. Kuznetsov. "Derivatives of closo-decaborate anion [B10H10]2− with exo-polyhedral substituents." Russian Journal of Inorganic Chemistry 55, no. 14 (December 2010): 2089–127. http://dx.doi.org/10.1134/s0036023610140019.

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35

Avdeeva, Varvara V., Elena A. Malinina, and Nikolay T. Kuznetsov. "ChemInform Abstract: Isomerism in Complexes with the Decahydro-Closo-Decaborate Anion." ChemInform 47, no. 12 (March 2016): no. http://dx.doi.org/10.1002/chin.201612227.

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36

Klyukin, I. N., A. V. Kolbunova, N. A. Selivanov, A. Yu Bykov, A. S. Kubasov, A. P. Zhdanov, K. Yu Zhizhin, and N. T. Kuznetsov. "Study of Protonation of Ethyloxy Derivative of closo-Decaborate anion [B10H9OC2H5]2–." Russian Journal of Inorganic Chemistry 67, no. 10 (September 27, 2022): 1567–72. http://dx.doi.org/10.1134/s003602362260085x.

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37

Golubev, A. V., A. S. Kubasov, A. Yu Bykov, K. Yu Zhizhin, and N. T. Kuznetsov. "Chlorination of Sulfonium Derivatives of closo-Decaborate Anion with Carboxyl-Containing Substituents." Doklady Chemistry 500, no. 2 (October 2021): 205–8. http://dx.doi.org/10.1134/s0012500821100025.

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38

Sivaev, Igor B., Natal'ya A. Votinova, Vikentii I. Bragin, Zoya A. Starikova, Lyudmila V. Goeva, Vladimir I. Bregadze, and Stefan Sjöberg. "Synthesis and derivatization of the 2-amino-closo-decaborate anion [2-B10H9NH3]−." Journal of Organometallic Chemistry 657, no. 1-2 (September 2002): 163–70. http://dx.doi.org/10.1016/s0022-328x(02)01419-5.

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39

Kubasov, A. S., E. Yu Matveev, V. M. Retivov, S. S. Akimov, G. A. Razgonyaeva, I. N. Polyakova, N. A. Votinova, K. Yu Zhizhin, and N. T. Kuznetsov. "Nickel(II) complexes with nitrogen-containing derivatives of the closo-decaborate anion." Russian Chemical Bulletin 63, no. 1 (January 2014): 187–93. http://dx.doi.org/10.1007/s11172-014-0412-2.

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40

Nelyubin, Alexey V., Ilya N. Klyukin, Alexander S. Novikov, Andrey P. Zhdanov, Mikhail S. Grigoriev, Konstantin Yu Zhizhin, and Nikolay T. Kuznetsov. "Nucleophilic addition of amino acid esters to nitrilium derivatives of closo-decaborate anion." Mendeleev Communications 31, no. 2 (March 2021): 201–3. http://dx.doi.org/10.1016/j.mencom.2021.03.018.

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41

Klyukin, I. N., A. V. Kolbunova, N. A. Selivanov, A. Yu Bykov, A. P. Zhdanov, K. Yu Zhizhin, and N. T. Kuznetsov. "Study of Protonation of the Monocarbonyl Derivative of the closo-Decaborate Anion [B10H9CO]–." Russian Journal of Inorganic Chemistry 66, no. 12 (December 2021): 1798–801. http://dx.doi.org/10.1134/s003602362112007x.

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42

Voinova, Vera V., Nikita A. Selivanov, Ivan V. Plyushchenko, Mikhail F. Vokuev, Alexander Yu Bykov, Ilya N. Klyukin, Alexander S. Novikov, et al. "Fused 1,2-Diboraoxazoles Based on closo-Decaborate Anion–Novel Members of Diboroheterocycle Class." Molecules 26, no. 1 (January 5, 2021): 248. http://dx.doi.org/10.3390/molecules26010248.

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The novel members of the 1,2-diboraoxazoles family have been obtained. In the present work, we have carried out the intramolecular ring-closure reaction of borylated iminols of general type [B10H9N=C(OH)R]− (R = Me, Et, nPr, iPr, tBu, Ph, 4-Cl-Ph). This process is conducted in mild conditions with 83–87% yields. The solid-state structures of two salts of 1,2-diboraoxazoles were additionally investigated by X-ray crystallography. In addition, the phenomena of bonding interactions in the 1,2-diboraoxazole cycles have been theoretically studied by the Quantum Theory of Atoms in Molecules analysis. Several local and integral topological properties of the electron density involved in these interactions have been computed.

43

Kubasov, A. S., E. Yu Matveev, I. N. Polyakova, G. A. Razgonyaeva, K. Yu Zhizhin, and N. T. Kuznetsov. "New method for preparation of sulfanyl derivative of closo-decaborate anion [B10H9SH]2−." Russian Journal of Inorganic Chemistry 60, no. 2 (February 2015): 198–202. http://dx.doi.org/10.1134/s0036023615020084.

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44

Klyukin, I. N., A. P. Zhdanov, E. Yu Matveev, G. A. Razgonyaeva, M. S. Grigoriev, K. Yu Zhizhin, and N. T. Kuznetsov. "Synthesis and reactivity of closo -decaborate anion derivatives with multiple carbon–oxygen bonds." Inorganic Chemistry Communications 50 (December 2014): 28–30. http://dx.doi.org/10.1016/j.inoche.2014.10.008.

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45

Zhizhin, K. Yu, A. P. Zhdanov, and N. T. Kuznetsov. "ChemInform Abstract: Derivatives of Closo-Decaborate Anion [B10H10]2- with Exo-polyhedral Substituents." ChemInform 42, no. 26 (June 3, 2011): no. http://dx.doi.org/10.1002/chin.201126192.

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46

Kubasov, A. S., I. V. Novikov, P. A. Starodubets, V. V. Avdeeva, K. Yu Zhizhin, and N. T. Kuznetsov. "Formation of Polyborates during Dimerization of the closo-Decaborate Anion and Isomerization of the Octadecahydroeicosaborate Anion." Russian Journal of Inorganic Chemistry 67, no. 7 (July 2022): 984–91. http://dx.doi.org/10.1134/s0036023622070130.

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47

Dimitrievska, Mirjana, Vitalie Stavila, Alexei V. Soloninin, Roman V. Skoryunov, Olga A. Babanova, Hui Wu, Wei Zhou, et al. "Nature of Decahydro-closo-decaborate Anion Reorientations in an Ordered Alkali-Metal Salt: Rb2B10H10." Journal of Physical Chemistry C 122, no. 27 (June 11, 2018): 15198–207. http://dx.doi.org/10.1021/acs.jpcc.8b04385.

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48

Akimov, S. S., E. Yu Matveev, A. S. Kubasov, G. A. Razgonyaeva, K. Yu Zhizhin, and N. T. Kuznetsov. "Polydentate ligands based on closo-decaborate anion for the synthesis of gadolinium(iii) complexes." Russian Chemical Bulletin 62, no. 6 (June 2013): 1417–21. http://dx.doi.org/10.1007/s11172-013-0204-0.

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49

Klyukin, I. N., N. A. Selivanov, A. Yu Bykov, A. P. Zhdanov, K. Yu Zhizhin, and N. T. Kuznetsov. "Synthesis and Physicochemical Properties of C-Borylated Amides Based on the closo-Decaborate Anion." Russian Journal of Inorganic Chemistry 64, no. 11 (November 2019): 1405–9. http://dx.doi.org/10.1134/s0036023619110081.

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50

Klyukin, I. N., N. A. Selivanov, A. Yu Bykov, A. P. Zhdanov, K. Yu Zhizhin, and N. T. Kuznetsov. "Synthesis and Physicochemical Properties of C-Borylated Esters Based on the closo-Decaborate Anion." Russian Journal of Inorganic Chemistry 65, no. 10 (October 2020): 1547–51. http://dx.doi.org/10.1134/s0036023620100113.

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