Synthesis and characterization of an Fe(I) cage complex with high stability towards strong H-acids
Chemical Communications. 2018. No. 28. P. 3436-3439.
Roitershtein D., Voloshin Y., Novikov V., Nelyubina Y., Belov A., Savitsky A., Mokhir A., Sutter J., Miehlich M., Meyer K.
The first synthesized and X-ray structurally characterized ‘‘classical’’ iron(I) dioximate showed an unrivaled stability towards strong acids, thus calling for a reassessment of the origins of the electrocatalytic activity of similar low-valent cobalt and iron cage complexes with electron-withdrawing ribbed substituents, shown previously to be effective electrocatalysts of the HER
Research target: Chemistry
Priority areas: engineering science
Polyphenylcyclopentadienyl ligands as an effective light-harvestig π-bonded antenna for lanthanide +3 ions
, , et al., Inorganic Chemistry 2018 Vol. 57 No. 16 P. 10199-10213
A new approach to design “antenna-ligands” to enhance the photoluminescence of lanthanide coordination compounds based on π-type ligand - polyphenylsubstituted cyclopentadienyl has been developed. The complexes of di-, tri- and tetraphenyl cyclopentadienyl ligands with Tb and Gd has been synthesized and all the possible structural types from mononuclear to di- and tetranuclear as well as ...
Added: October 18, 2018
СИНТЕЗ И СТРУКТУРНОЕ РАЗНООБРАЗИЕ ТРИФЕНИЛАЦЕТАТНЫХ КОМПЛЕКСОВ ЛАНТАНА И НЕОДИМА С ТРИМЕТИЛТРИАЗАЦИКЛОГЕКСАНОМ И КРАУН-ЭФИРОМ
, , et al., Координационная химия 2020 Т. 46 № 5 С. 270-279
The reactions of lanthanum and neodymium triphenylacetates with polydentate 6- and 18-membered N- and O-heterocyclic ligands give various types of mononuclear triphenylacetate complexes containing a polydentate auxiliary ligand (neutral or cationic and anionic): [Nd(Ph3CCOO)(3)(Me(3)TACH)] center dot CHCl3 (II), [La(Ph3CCOO)(4)(Me(3)TACH)](-)[NH4Me](+) (III), [La(Ph3CCOO)(3)(18-crown-6)] (IV), and [Nd(Ph3CCOO)(2)(18-crown-6)](+)[Nd(Ph3CCOO)(4)](-) (V) and binuclear complex [La-2(Ph3CCOO)(3)-(Me(3)TACH)] center dot 2C(6)H(5)CH(3) (I) (CIF files ...
Added: September 3, 2020
, , et al., Current opinion in Electrochemistry (United States) 2019 Vol. 14 P. 23-31
Transition metal oxides are attractive noble metal-free catalysts of the oxygen reduction for application at the cathode of alkaline membrane fuel cells or metal-air batteries. However, despite of a rapidly increasing number of publications devoted to the oxygen electrocatalysis on transition metal oxides, a clear picture regarding the relations between their structure and composition on the one hand and electrocatalytic activity on the other hand is lacking. ...
Added: June 2, 2019
Подвижная петля активного центра - недооцененная структурная детерминанта субстратной селективности металлокарбоксипептидаз
, , et al., Биохимия 2019 Т. 84 № 1 С. 53-62
It is generally accepted that the primary specificity of metallocarboxypeptidases is mainly determined by the structure of the so-called primary specificity pocket. However, the G215S/A251G/T257A/D260G/T262D mutant of carboxypeptidase T from Thermoactinomyces vulgaris(CPT) with the primary specificity pocket fully reproducing the one in pancreatic carboxypeptidase B (CPB) retained the broad, mainly hydrophobic substrate specificity of the wild-type ...
Added: February 13, 2019
, , et al., Координационная химия 2022 Т. 48 № 8 С. 483-488
New coordination compounds of iron(III) with malonic acid dianions and rubidium and cesium (II) cations are synthesized. According to the X-ray diffraction data, the crystalline compounds are isostructural 3D coordination polymers in which the repeated structural unit is the tetranuclear block consisting of the central tris-chelate fragment linked by the malonate bridges with the Rb or ...
Added: January 24, 2023
, , et al., undefined 2018 Vol. 1 No. 10 P. 5124-5128
Pyrazolium ionic liquids (Pz ILs) were employed as co-catalysts for electrochemical conversion of CO2 to CO on a silver disk electrode, leading to a significant decrease in the onset potential for the reduction (ca. 500 mV). The electrochemical conversion of CO2 to CO proceeds in acetonitrile-based electrolytes containing Pz IL co-catalysts with Faradaic efficiencies (FEs) of nearly ...
Added: October 29, 2020
Synthesis of Cobalt‐Iron Chalcogenide Clusters as Precursors for Catalysts of Oxygen Electroreduction in Alkali Media
, , et al., European Journal of Inorganic Chemistry 2020 Vol. 2020 No. 21 P. 2055-2062
New cobalt‐iron chalcogenide clusters C5HMe4Co(CO)E2Fe2(CO)6 (E = Se, Te) were prepared and characterized by IR and NMR spectroscopy; their structures were determined by single‐crystal XRD. Catalysts consisting of nanoparticles of bimetallic chalcogenides of cobalt and iron deposited on highly dispersed carbon black Vulcan XC‐72 were made from the synthesized clusters. Structural characteristics of these catalysts were ...
Added: March 10, 2021
, , et al., Polyhedron 2019 Vol. 160 P. 42-45
Single crystals of In(CH3COO)3 have been prepared by dissolution of basic indium carbonate In(OH)CO3 in a mixture of anhydrous acetic acid and acetic anhydride. The crystal structure of In(CH3COO)3 has been solved and refined for the first time using single crystal X-ray diffraction data [space group P21, a=8.0770(10) Å, b=7.6481(10) Å, c=8.0859(10) Å, β = ...
Added: May 29, 2019
, , et al., Chemistry - A European Journal 2020 Vol. 26 P. 12188-12193
Two novel cerium(IV) phosphates were obtained: cerium(IV) hydroxidophosphate, Ce(OH)PO4, and cerium(IV) oxidophosphate, Cе2O(PO4)2, which were shown to complement the classes of isostructural compounds M(OH)PO4 and R2O(PO4)2, where M = Th, U and R = Th, U, Np, Zr. Cе2O(PO4)2 oxidophosphate is formed by elimination of H2O from the crystal structure of Ce(OH)PO4 during its thermal ...
Added: July 2, 2020
, , et al., undefined 2020 Vol. 3 No. 5 P. 4690-4698
Electrochemical reduction of carbon dioxide (CO2RR) is promoted by ionic liquid (IL) co-catalysts, and several mechanisms have been proposed to explain their role. Due to the complexity of the CO2RR and the limited number of active IL co-catalysts, a consensus on the precise role of ILs has not been reached, and it is not possible ...
Added: October 29, 2020
Удивительный пример сохранения необычной куполообразной структуры 3,5-ди-(трет-бутил)-2-оксиазобензола PDII в кристалле и газовой фазе
, , et al., Известия РАН. Серия химическая 2021 Т. 70 № 5 С. 847-856
The structure of the newly synthesized palladium(ii) 3,5-di(tert-butyl)-2-oxyazobenzene, PdL2, was determined by X-ray diffraction. The metal chelate was found to adopt an unusual domed conformation, with the trans-planar coordination unit at the top. This is the first complex of this class, the domed structure of which was confirmed by X-ray diffraction and in which the ...
Added: September 14, 2021
Self-assembly of heteroleptic tetranuclear carboxylate complexes of yttrium and lanthanides during hydrolysis and oxidation of rare earth homoleptic carboxylates
, , et al., Inorganic Chemistry Communications 2017 No. 84 P. 225-228
Novel heteroleptic carboxylate complexes bearing hydroxide or peroxide ligands were obtained by hydrolysis [Y4(Ph2CHCOO)10(OH)2(THF)2] (1) or oxidation [Ln4(Ph3CCOO)8(O2)2(THF)4(H2O)2] Ln = Nd (4), Eu (5), and [Nd4(Ph3CCOO)8(O2)(O)(THF)4] (4a). Crystal structure of 1, 4, 4a and 5 were determined by single-crystal X-ray diffraction. The molecular structures of all complexes obtained demonstrate planar framework consisting of four lanthanide or yttrium cations. In ...
Added: October 19, 2018
Synthesis, structure, and PDE inhibiting activity of the anionic DNIC with 5-(3-pyridyl)-4H-1,2,4-triazole-3-thiolyl, the nitric oxide donor.
, , et al., Inorganica Chimica Acta 2021 Vol. 527 Article 120559
A new inhibitor of phosphodiesterase (PDE), i.e., nitric oxide (NO) donor, a water soluble DNIC Na[Fe(C7H5N4S)2(NO)2]⋅2.5H2O (1), has been synthesized. The structure of the new complex, its physical-chemical properties in the solid state and in solutions have been studied experimentally (X-ray analysis, IR, UV-Vis, Mossbauer spectroscopy, mass-spectrometry, and amperometry) and theoretically (quantum-chemical modeling by DFT ...
Added: September 16, 2021
A General and Facile Approach for the Electrochemical Reduction of Carbon Dioxide Inspired by Deep Eutectic Solvents
, , et al., ChemSusChem 2019 Vol. 12 No. 8 P. 1635-1639
Deep eutectic solvents (DESs) were applied to the electrochemical CO2 reduction reaction (CO2RR). Choline‐based DESs represent a non‐toxic and inexpensive alternative to room‐temperature ionic liquids (RTILs) as additives to the system or as electrolyte. Following the study on choline‐based DESs this approach was generalized and simple and organic‐soluble systems were devised based on the combination of ...
Added: October 29, 2020
, , et al., ChemistrySelect 2020 Vol. 5 No. 39 P. 12243-12249
Energetic compounds 1–6, consisting of one or two furazan rings linked by azo or azoxy bridges and one or two nitro‐NNO‐azoxy substituents, were synthesized by nitration of the corresponding tert‐butyl‐NNO‐azoxy precursors with NO2BF4. Novel methods for the synthesis of 3,4‐bis(tert‐butyl‐NNO‐azoxy)furazan (7) and bis‐4,4′‐(tert‐butyl‐NNO‐azoxy)‐3,3′‐azoxyfurazan (21) were elaborated. The nitro‐NNO‐azoxy compounds obtained display high calculated detonation performance (vD=8.07–9.40 km s−1 and PC‐J=27.4–43.4 GPa) that ...
Added: October 17, 2020
Heavy-Atom Antiferromagnet GdBiTe: An Interplay of Magnetism and Topology in a Symmetry-Protected Topological Semimetal
, , et al., Chemistry of Materials 2021 Vol. 33 No. 7 P. 2420-2435
Magnetic topological semimetals (MTSs) are quantum materials highly desirable for spintronics. We report the synthesis, the crystal structure, the chemical bonding analysis, the magneto(transport) properties, and the bulk and surface electronic structures of GdBiTe. It is a high-Z isostructural analogue of the archetypical nodal-line TS ZrSiS and a recently discovered MTS LnSbTe (Ln = Ce, ...
Added: April 30, 2021
Издательский дом НИУ ВШЭ, 2019
Учебно-методическое пособие составлено на основании многолетнего опыта преподавания курса неорганической химии на химическом факультете МГУ имени М.В. Ломоносова. Пособие является руководством к лабораторным занятиям и состоит из четырех глав. В первой главе изложена техника безопасности проведения лабораторных работ, во второй — приводится описание основной химической посуды и приемов обращения с ней, а также правила обращения с реактивами. ...
Added: September 9, 2019
, М. : ЛЕНАНД, 2020
Within the presented monograph for the first time statistical approaches, based on the self-consistent field theory, were presented for the theoretical description of the thermodynamic properties of the ion-molecular systems (electrolyte solutions, ionic liquids, dielectric polymers and metal-organic frameworks) in the bulk solution and at the interfaces with the account for their molecular structure. In ...
Added: November 18, 2019
, , et al., Journal of Alloys and Compounds 2021 Vol. 859 Article 157782
MgPd2 is an intermetallic compound with a reversible hydrogen uptake near ambient conditions. Hydrogenation occurs near room temperature at pressures below 0.1 MPa to form a hydrogen-rich MgPd2H0.88 phase. In this work, hydrogen sorption isotherms were measured at 283 K ≤ T ≤ 328 K as well as at a cryogenic temperature of 77 K and pressure values up ...
Added: November 5, 2020
, , et al., Физика и техника полупроводников 2017 Т. 51 № 8 С. 1028-1030
Thermoelements for thermoelectric coolers from fine-crystalline materials based on antimony and bismuth chalcogenide solid solutions of p- and n-type conductivities, obtained by hot pressing and extrusion from powders, made by melt spinning, were studied. Calculations of modules’ properties were performed in the range of 100−400K, taking into account temperature dependencies of thermoelectric parameters of legs, and the parameters of thermoelectric legs’ matching ...
Added: October 30, 2019
, , et al., Nature Communications 2020 Vol. 11 Article 1484
The rapid progress in mass-market applications of metal-ion batteries intensifies the development of economically feasible electrode materials based on earth-abundant elements. Here, we report on a record-breaking titanium-based positive electrode material, KTiPO4F, exhibiting a superior electrode potential of 3.6 V in a potassium-ion cell, which is extraordinarily high for titanium redox transitions. We hypothesize that such ...
Added: February 10, 2021
Structure of the carboxypeptidase B complex with N-sulfamoyl-L-phenylalanine - a transition state analog of non-specific substrate
, , et al., Journal of Biomolecular Structure and Dynamics 2018 Vol. 36 No. 4 P. 956-965
Carboxypeptidase B (EC 188.8.131.52) (CPB) is commonly used in the industrial insulin production and as a template for drug design. However, its ability to discriminate substrates with hydrophobic, hydrophilic, and charged side chains is not well understood. We report structure of CPB complex with a transition state analog N-sulfamoyl-L-phenylalanine solved at 1.74 angstrom. The study ...
Added: January 28, 2019
, , , Coordination Chemistry Reviews 2021 Vol. 426 P. 1-23
Abstract In this review we summarize the results of recent studies of the mechanisms of magnetoelectric effect in mixed-valence molecules. Consideration of fairly different systems and emerging situations is united by a common physical concept of spin-dependent electric polarizability in a wide class of such systems. In many-electron dimers, which are on the borderline between ...
Added: September 10, 2021
Novel anion exchange membrane with low ionic resistance based on chloromethylated/quaternized‐grafted polystyrene for energy efficient electromembrane processes
, , , Journal of Applied Polymer Science 2020 Vol. 137 No. 19 P. 48656
A novel anion-exchange membrane has been manufactured by chloromethylation and subsequent quaternization of polystyrene within a graft copolymer films based on UV-oxidized polymethylpentene. Particular attention is given to the kinetics of chloromethylation and the influence of the reaction conditions on the properties of the anion-exchange membranes. By means of variation of the polystyrene content and ...
Added: February 27, 2020