Review
Chemistry, Physical
Varvara V. Avdeeva, Svetlana E. Nikiforova, Elena A. Malinina, Igor B. Sivaev, Nikolay T. Kuznetsov
Summary: In this article, composites and materials prepared from boron hydride cluster compounds are presented. The utilization of these materials as boron protective coatings, as well as their applications in synthesizing boron carbide, boron nitride, metal borides, metal-containing composites, and neutron shielding materials, are discussed.
Article
Chemistry, Inorganic & Nuclear
Joseph A. Zurakowski, Brady J. H. Austen, Maeve C. Dufour, Moulika Bhattacharyya, Denis M. Spasyuk, Marcus W. Drover
Summary: This study reported the preparation of a novel cobalt (III) hydride and the influence of ligand design on reactivity, combining synchrotron-radiation crystallography and electrochemical studies for detailed investigation.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Varvara V. Avdeeva, Anna V. Vologzhanina, Elena A. Ugolkova, Vadim V. Minin, Elena A. Malinina, Nikolay T. Kuznetsov
Summary: This study presents the synthesis and structures of complexes [ML6] [B10Cl10] (M = Co, Ni; L = CH3CN, DMF or DMSO). The compounds were characterized by elemental analysis and various spectroscopic techniques, and played a significant role in ligand metathesis and solid-state synthesis.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Elena A. Malinina, Ivan I. Myshletsov, Grigorii A. Buzanov, Alexey S. Kubasov, Irina V. Kozerozhets, Lyudmila V. Goeva, Svetlana E. Nikiforova, Varvara V. Avdeeva, Konstantin Yu. Zhizhin, Nikolay T. Kuznetsov
Summary: Nanocrystalline cobalt monoboride was synthesized by thermal decomposition of precursors [Co(DMF)(6)][An], where [An] = [B12H12](2-) (1), [trans-B20H18](2-) (2) or [B10Cl10](2-) (3) in an argon atmosphere. Three new salt-like compounds 1-3 were obtained by the reaction of Co(NO3)(2) with (Et3NH)(2)[An]. Characterization of the annealed products 1a-3a revealed the presence of BN and CoB for 1a, a higher CoB:BN ratio for 2a with decreased crystallinity, and only CoB for 3a. TEM analysis showed that 1a and 2a had small particle sizes (10-15 nm) and a normal size distribution, while 3a had large particles (200-350 nm) with a broad distribution.
Article
Chemistry, Multidisciplinary
Kimberly K. Hollister, Wenlong Yang, Ranajit Mondol, Kelsie E. Wentz, Andrew Molino, Aishvaryadeep Kaur, Diane A. Dickie, Gernot Frenking, Sudip Pan, David J. D. Wilson, Robert J. Gilliard
Summary: In this study, the first isolable, crystalline borepin radical and anion complexes were reported. These complexes were synthesized through the reduction of carbon-carbon double bonds in cyclic(alkyl)(amino) carbene-dibenzo[b,d]borepin precursors using potassium graphite. The resulting compounds have potential applications in the development of new materials and optoelectronics.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Weibin Guo, Yunfan Wu, Shihao Wang, Yuanyuan Liu, Guiyang Gao, Liang Lin, Mengjian Fan, Xutao Zhu, Li Xia, Qing Luo, Laisen Wang, Ji Shi, Jie Lin, Qingshui Xie, Dong-Liang Peng
Summary: The instability of the anionic redox reaction and the resulting irreversible oxygen release are identified as the core causes of the deterioration in cycling stability of Li-rich cathode materials (LRM). To mitigate these issues, a uniform surface boron cobalt complexes (BCCs) coating was successfully constructed on cobalt-free LRM. The BCCs coating effectively reduced interface side reactions, Mn dissolution, and irreversible gas release, resulting in enhanced structural stability. The modified LRM cathode exhibited superior capacity retention (92.7%) compared to the pristine LRM cathode (78.1%) after 300 cycles at 1 C, highlighting the potential of this modification strategy for commercial application of LRM.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Dmitry A. Gruzdev, Angelina A. Telegina, Evgeny N. Chulakov, Galina L. Levit, Victor P. Krasnov
Summary: In this study, planar-chiral carborane derivatives were obtained for the first time through deboronation and separation of diastereomeric derivatives. The absolute configuration of structurally simple nido-carborane derivatives was also assigned using an alternative synthetic route.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
Divyani Gupta, Alankar Kafle, Man Singh, Devyani Dahare, Tharamani C. Nagaiah
Summary: Electrochemical dinitrogen reduction (NRR) has the potential to replace the energy-intensive Haber-Bosch process for clean ammonia (NH3) production. However, the selectivity between NRR and hydrogen evolution reaction (HER) is a major challenge. This study used scanning electrochemical microscopy (SECM) to investigate the production of NH4+ and its competition with HER during electrochemical N-2 reduction. The findings provide valuable information on the competition between NRR and HER with high spatial resolution and accuracy.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Yujie Jin, Jizeng Sun, Kang Zhang, Jiyong Liu, Michael Worle, Simon Duttwyler
Summary: Regioselective, five-fold B-H activation of the monocarborane cluster [CB11H12](-) at the positions B7-11 has been achieved. This selective substitution method involves directing group assistance by the carboxylic acid functionality and palladium catalysis using iodoarene coupling partners. The obtained penta-arylated products exhibit good yields and functional group tolerance, and X-ray crystal structures confirm the selective substitution of the lower belt of the monocarborane cage.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Moon Kedia, Bhaskaran Shankar, Malaichamy Sathiyendiran
Summary: Neutral heteroleptic trinuclear coordination cages with a well-defined small spherical endocavity composed of electron-deficient bowl frameworks, three coordination-induced neutral polar C-H donors, and a phenyl motif were self-assembled via a one-pot approach. The endocavity selectively accommodates fluoride in the presence of other halides.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Ye Liang, Wei Yan, Xianbo Shi, Yanfen Li, Quanqiang Shi, Wei Wang, Yiyin Shan, Ke Yang
Summary: In a heat-resistant steel with 150 ppm B, the evolution of W-rich M3B2 type borides during aging at temperatures of 650, 700, 750 degrees C was studied. Results showed that the borides could dissolve during prolonged isothermal exposure, postponing the nucleation and growth of Laves phase and preventing B from segregating in carbides. The temporary existence of W-rich M3B2 type borides at high temperatures postpones phase transformation and segregation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Multidisciplinary
Kelsie E. Wentz, Andrew Molino, Sarah L. Weisflog, Aishvaryadeep Kaur, Diane A. Dickie, David J. D. Wilson, Robert J. Gilliard
Summary: The study explores the synthesis of carbene-stabilized monoanionic borafluorenes as a new platform for constructing high-value boracyclic materials, demonstrating their potential for forming novel boron-containing compounds.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Inorganic & Nuclear
Varvara V. Avdeeva, Aleksey S. Kubasov, Svetlana E. Korolenko, Viktor I. Privalov, Elena A. Malinina, Nikolay T. Kuznetsov
Summary: The complexation of iron(II), cobalt(II), and nickel(II) with 1,10-phenanthroline (Phen) and 2,2'-bipyridyl (Bipy) in the presence of the [B20H18](2-) anion was studied. Tris-chelate metal complexes [ML3][B20H18] were synthesized and characterized. The composition of the complexes could not be changed by varying the ratio of reagents, except for cobalt(II) and Phen, which formed a binuclear complex. The structures of the complexes were determined by X-ray diffraction.
Article
Chemistry, Physical
Alexandra N. Protsenko, Olga G. Shakirova, Alexander E. Protsenko, Natalia V. Kuratieva, Samantha M. Fowles, Mark M. Turnbull
Summary: New coordination compounds of copper(II) and cobalt(II) with 3-(chloromethyl)pyridine hydrochloride and 2-(chloromethyl)pyridine hydrochloride have been synthesized and characterized using various analytical techniques.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Inorganic & Nuclear
N. A. Protasenko, E. V. Baranov, I. A. Yakushev, A. S. Bogomyakov, V. K. Cherkasov
Summary: New heteroligand cobalt(III) bis-3,6-di-tert-butyl-o-benzosemiquinone complexes with p-tolyl-substituted formazan ligands were synthesized and characterized, showing significant enhancement in exchange interactions between radical centers with the substitution of phenyl groups by p-tolyl groups in the diamagnetic formazanate ligand positions 1 and 5.
RUSSIAN JOURNAL OF COORDINATION CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Svetlana E. Korolenko, Alexey S. Kubasov, Nadezhda A. Khan, Lyudmila Goeva, Anatoliy S. Burlov, Lyudmila N. Divaeva, Elena A. Malinina, Varvara V. Avdeeva, Konstantin Yu Zhizhin, Nikolay T. Kuznetsov
Summary: In this study, the complexation of zinc(II) and cadmium(II) with the dodecahydrido-closo-dodecaborate anion [B12H12](2-) in the presence of benzimidazole ligands L-1 and L-2 was investigated. The resulting compounds were characterized and the influence of the metal nature on their composition and structure was determined. Tris-chelate zinc(II) complexes with the [B12H12](2-) anion were isolated, while mixed-ligand complexes with 3c2e (CdHB) bonds between the [B12H12](2-) anion and the cadmium atom were obtained for the first time.
JOURNAL OF CLUSTER SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Dmitriy S. Yambulatov, Julia K. Voronina, Alexander S. Goloveshkin, Roman D. Svetogorov, Sergey L. Veber, Nikolay N. Efimov, Anna K. Matyukhina, Stanislav A. Nikolaevskii, Igor L. Eremenko, Mikhail A. Kiskin
Summary: A new 1D-coordination polymer with different phases at room temperature was obtained. The structural phase transition of the compound was observed as the temperature decreased, accompanied by an increase in crystal packing density. The compound exhibited slow magnetic relaxation in a magnetic field of 1000 Oe.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Editorial Material
Chemistry, Multidisciplinary
Svetlana P. Petrosyants, Andrey B. Ilyukhin, Konstantin A. Babeshkin, Nikolay N. Efimov, Pavel S. Koroteev
Summary: The 3d-4f heterometallic polymeric complex synthesized and characterized exhibits the properties of a single-chain magnet with a magnetization reversal barrier of 42 K.
MENDELEEV COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Sergey Yu. Kottsov, Maxim A. Shmelev, Alexander E. Baranchikov, Mikhail A. Kiskin, Alim U. Sharipov, Nikolay N. Efimov, Irina K. Rubtsova, Stanislav A. Nikolaevskii, Gennady P. Kopitsa, Tamara V. Khamova, Ilya V. Roslyakov, Igor L. Eremenko, Vladimir K. Ivanov
Summary: The first aerogel-based single-ion magnets were synthesized by immobilizing cobalt(II) ions in a silica aerogel matrix. The lyogels were synthesized by co-hydrolyzing methyl-trimethoxysilane and N-3-(trimethoxysilyl)propyl ethylenediamine, and then the cobalt(II) ions were bound to the silica matrix through the immobilized ethylenediamine groups. The cobalt(II)-modified silica aerogels exhibited slow magnetic relaxation in a nonzero field.
Article
Chemistry, Inorganic & Nuclear
Evgenii Yu. Matveev, Varvara V. Avdeeva, Alexey S. Kubasov, Konstantin Yu. Zhizhin, Elena A. Malinina, Nikolay T. Kuznetsov
Summary: In this study, mixed-ligand lead(II) complexes with 2,2'-bipyridyl and [B10H9OH](2-) or monosubstituted hydroxy-substituted closo-decaborate anions with a pendant hydroxy group were synthesized and characterized by IR and multinuclear NMR spectroscopies. The structures of a binuclear complex [Pb(bipy)(2)[B10H9OH]](2)·CH3CN, a mononuclear complex [Pb(bipy)(2)[B10H9O(CH2)2O(CH2)2OH]]·0.5bipy·CH3CN, and a polymeric complex [Pb(bipy)[B10H9O(CH2)5O(CH2)2OH]](n) were determined by single-crystal X-ray diffraction. The coordination polyhedra of lead(II) in these compounds are formed by N atoms from bipy molecules, O atoms of the substituents, and BH groups of the boron cage.
Article
Chemistry, Inorganic & Nuclear
Varvara V. Avdeeva, Alexey S. Kubasov, Alexey V. Golubev, Sergey A. Anufriev, Igor B. Sivaev, Svetlana E. Nikiforova, Lyudmila V. Goeva, Elena A. Malinina, Nikolay T. Kuznetsov
Summary: Reactions of [B11H11]2- with copper(I) and silver(I) complexes [(Ph3P)3MX] (M = Cu, X = Cl; M = Ag, X = NO3) led to the formation of metallaboranes (Bu4N)3[commo-M(B11H11)2] instead of M-H-B complexes. The crystal structure of (Bu4N)3[Ag(B11H11)2] was determined using single-crystal X-ray diffraction. Hirschfeld surface analysis and DFT calculations were conducted for both metallaboranes [M (B11H11)2]3- (M = Cu, Ag).
INORGANICA CHIMICA ACTA
(2023)
Article
Chemistry, Inorganic & Nuclear
Varvara V. Avdeeva, Viktor I. Privalov, Alexey S. Kubasov, Svetlana E. Nikiforova, Elena A. Malinina, Nikolay T. Kuznetsov
Summary: Two isomers of macropolyhedral boron cluster [B20H18]2- have been synthesized as salts {(Ph3P)2N}2[trans- B20H18] and {(Ph3P)2N}2[iso-B20H18]. The structures of both compounds have been studied by various techniques including 1H and 11B NMR spectroscopy, IR spectroscopy, and single-crystal X-ray diffraction. The analysis of the structures of both isomers was based on the results of 2D COSY 11B NMR and X-ray diffraction data.
INORGANICA CHIMICA ACTA
(2023)
Article
Chemistry, Physical
Galina I. Kozub, Denis Korchagin, Alexei I. Dmitriev, Andrey N. Utenyshev, Konstantin Bozhenko, Gennadii Shilov, Nikolay S. Ovanesyan, Olesya Pokidova, Tat'yana A. . Kondrat'eva, Mikhail Zhidkov, Nikolay N. Efimov, Tatiana N. Rudneva, Sergey M. Aldoshin
Summary: A mononuclear iron mononitrosyl complex with two 8-mercaptoquinolate ligands was synthesized by two different methods. The complex can donate NO when dissolved in DMSO and diluted with water. Various spectroscopic techniques were used to study the complex, revealing strong covalent bonding in the Fe(II)-NO· fragment and antiferromagnetic coupling, resulting in a S = 1/2 state for the {FeNO}7-unit. Magnetic property analysis showed that the complex tends to dimerize through intermolecular ferromagnetic exchange coupling via π-stacking in the crystal structure at low temperatures.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Materials Science, Multidisciplinary
Irina Kozerozhets, Evgenii Semenov, Lyubov Kozlova, Yulia Ioni, Varvara Avdeeva, Yurii Ivakin
Summary: This paper presents a new method for synthesizing nanosized oxide powders with controlled properties. The study pays attention to the optimal synthesis parameters and the phase transformations during the formation of nanosized powders. The synthesized nanoparticles exhibit high reactivity due to their disordered defect structure.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Inorganic & Nuclear
V. V. Avdeeva, A. V. Vologzhanina, S. E. Nikiforova, G. A. Buzanov, E. A. Malinina, N. T. Kuznetsov
Summary: （Summary in English）
In this study, the reactions of (Et3NH)(2)[B10Cl10] and organic ligands 2,2'-bipyridyl (Bipy) and 1,10-phenanthroline (Phen) in the acetonitrile-trifluoroacetic acid system were investigated. It was found that the organic ligands undergo protonation in the presence of trifluoroacetic acid and form stable compounds with the decachloro-closo-decaborate anion.
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Review
Chemistry, Physical
Varvara V. Avdeeva, Svetlana E. Nikiforova, Elena A. Malinina, Igor B. Sivaev, Nikolay T. Kuznetsov
Summary: In this article, composites and materials prepared from boron hydride cluster compounds are presented. The utilization of these materials as boron protective coatings, as well as their applications in synthesizing boron carbide, boron nitride, metal borides, metal-containing composites, and neutron shielding materials, are discussed.
Article
Crystallography
Svetlana E. Nikiforova, Nadezhda A. Khan, Alexey S. Kubasov, Yurii V. Koshchienko, Anatolii S. Burlov, Lyudmila N. Divaeva, Lyudmila V. Goeva, Varvara V. Avdeeva, Elena A. Malinina, Nikolay T. Kuznetsov
Summary: A series of Schiff base derivatives with different linker groups were synthesized and characterized. During the coordination process, ligand L-3 underwent degradation and degradation products were obtained. X-ray diffraction and Hirshfeld surface analysis were performed for structural characterization.
Article
Crystallography
Ekaterina Kudryavtseva, Andrey Serykh, Bogdan Ugrak, Tatyana Dutova, Darina Nasyrova, Alexander Korlyukov, Mikhail Zykin, Nikolay Efimov, Artem Bogomyakov, Evgeny Tretyakov
Summary: New complexes of manganese(II) hexafluoroacetylacetonate with pyrazole-based ligands were synthesized and characterized. The complexes showed different crystal structures and magnetic behaviors, with strong antiferromagnetic behavior at high temperatures and weak ferro- or antiferromagnetic interactions at low temperatures.
Article
Materials Science, Multidisciplinary
Anastasia Bolotskaia, Varvara Avdeeva, Pavel Bazhin, Maksim Mikheev, Alexander Stolin, Vseslav Novikov, Marina Kovaleva, Viacheslav Sirota
Summary: The phase composition, structures, and properties of coatings on a high-speed steel substrate (steel R6M5) were studied using the ESA method. Electrode materials prepared through self-propagating high-temperature synthesis (SHS) with the addition of nanosized AlN particles were used. The coatings inherited the structure of the SHS electrode material and demonstrated improved surface hardness and wear resistance compared to the uncoated substrate.
Article
Chemistry, Inorganic & Nuclear
Elena A. Malinina, Ivan I. Myshletsov, Grigorii A. Buzanov, Irina V. Kozerozhets, Nikolay P. Simonenko, Tatiana L. Simonenko, Svetlana E. Nikiforova, Varvara V. Avdeeva, Konstantin Yu. Zhizhin, Nikolay T. Kuznetsov
Summary: The thermal reduction of copper(II) complexes was studied at 900 degrees C in an argon atmosphere. It was found that annealing resulted in the formation of a boron-containing copper composite with copper(0) nanoparticles. Physicochemical studies confirmed the composition and electrical properties of the annealed products.
