A5045806553- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Magnetism in coordination complexes
- Economic Issues in Ukraine
- Metal-Organic Frameworks: Synthesis and Applications
- Metal complexes synthesis and properties
- Economic and Technological Developments in Russia
- Crystal structures of chemical compounds
- Business and Economic Development
- Lanthanide and Transition Metal Complexes
- Advanced Condensed Matter Physics
- Economic and Business Development Strategies
- Organometallic Compounds Synthesis and Characterization
- Magnetic and transport properties of perovskites and related materials
- Iron-based superconductors research
- Corruption and Economic Development
- Economic Development and Digital Transformation
- Crystallography and molecular interactions
- Vanadium and Halogenation Chemistry
- Enterprise Management and Information Systems
- Ukrainian Legal and Forensic Studies
- Chemical Thermodynamics and Molecular Structure
- Regional Development and Policy
- Regional Economic Development and Innovation
- Labor Market and Education
Institute of Applied Physics
2012-2023
Moldova State University
2023
Chuvash State Pedagogical University
2021
National Research Mordovia State University
2020
Academy of Sciences of Moldova
2007-2018
Kazan Federal University
2015
Odesa I. I. Mechnikov National University
2008
Adam Mickiewicz University in Poznań
2005
A straightforward approach to heterometallic Mn-Fe cluster-based coordination polymers is presented. By employing a mixed-valent μ(3)-oxo trinuclear manganese(II/III) pivalate cluster, isolated as [Mn(II)Mn(III)(2)O(O(2)CCMe(3))(6)(hmta)(3)]·(solvent) (hmta = hexamethylenetetramine; solvent n-propanol (1), toluene (2)) in the reaction with iron(III) cluster compound, [Fe(3)O(O(2)CCMe(3))(6)(H(2)O)(3)]O(2)CCMe(3)·2Me(3)CCO(2)H, three new {Mn(II)Fe(III)(2)} were obtained: one-dimensional...
Single crystals of the ternary iron selenide ${\mathrm{RbFeSe}}_{2}$ have been investigated by means x-ray diffraction, magnetic susceptibility, magnetization, and specific-heat measurements as well M\"ossbauer spectroscopy. Built up from linear chains edge-sharing ${\mathrm{FeSe}}_{4}$ tetrahedra, represents a quasi-one-dimensional antiferromagnet. Below ${T}_{\mathrm{N}}=248$ K three-dimensional antiferromagnetic collinear order sets in, with moments oriented perpendicularly to chain...
Abstract The reaction of o ‐phthalic acid (H 2 Pht) and 2,2'‐bipyridine (bpy) with cobalt( II ) carbonate at different temperatures results in the isolation three types new III compounds. mononuclear complex [Co(CO 3 )(bpy) ] (Pht) · 16H O ( 1 is obtained when run 60 °C. Crystallographic analysis revealed that contains two crystallographically independent + cations, a Pht 2– anion, sixteen solvate water molecules. latter form wall channels oxygen atoms carboxylate groups anions, which are...
Two new magnetic cluster-based 3D coordination polymers consisting of μ3-oxo-centered cationic homometallic [FeIII3O(O2CCMe3)6]+ or neutral heterometallic [FeIII2CoIIO(O2CCMe3)6] clusters bridged by different N,N′-donor ligands into three-dimensional networks {[Fe3O(O2CCMe3)6(4,4′-bpy)1.5](OH)·0.75(CH2Cl2)·x(H2O)}n (1, x ≈ 8) and {[Fe2CoO(O2CCMe3)6(bpe)0.5(pyz)]}n (2) (where 4,4′-bpy = 4,4′-bipyridine; bpe 1,2′-bis(4-pyridyl)ethylene; pyz pyrazine) have been prepared under solvothermal...
We report crystal structure, magnetization, and specific heat measurements on single crystals of the hexagonal polar magnet ${\mathrm{Co}}_{2\text{\ensuremath{-}}x}{\mathrm{Zn}}_{x}{\mathrm{Mo}}_{3}{\mathrm{O}}_{8}$ magnetically diluted by replacing Co Zn. In contrast to transformation from antiferromagnetic a ferrimagnetic state observed in isostructural ${\mathrm{Fe}}_{2}{\mathrm{Mo}}_{3}{\mathrm{O}}_{8}$ upon small Zn doping, robust behavior is preserved Zn-doped...
Abstract Four heterometallic complexes {Mg(H 2 O) 6 }[Cr (μ‐OH) ‐( nta ) ] · 4 H O ( I ), {Ca(H 3 II {Sr(H III and {Ba(H ‐ dmso IV containing dinuclear bis (μ‐hydroxo) chromium( complex ions, where is the nitrilotriacetate ligand dimethyl sulfoxide, have been prepared crystallographically characterised. Compound displays an ionic type structure, are 3D coordination polymers behaves like a 2D polymer. In these compounds, dimeric unit exhibits different structural features. It forms polymeric...
Abstract Different synthetic routes have been used for the preparation of a new tetranuclear [Fe 4 O 2 (O CCMe 3 ) 8 (bpm)] cluster ( 1 and one‐dimensional coordination polymer (hmta)] n (bpm = 2,2′‐bipyrimidine hmta hexamethylenetetramine). For , two structural isomers, 1a 1b· 3MeCN, found. X‐ray crystallographic analysis showed that all complexes consist central {Fe (μ ‐O) } 8+ core. In metal ions in core are additionally linked by six bridging pivalates as other bpm ligand chelated to Fe...
We report the structural and magnetic properties of high-quality bulk single crystals kagome ferromagnet Fe$_3$Sn. The dependence magnetisation on magnitude orientation external field reveals strong easy-plane type uniaxial anisotropy, which shows a monotonous increase from $K_1=-0.99\times 10^6 J/m^3$ at 300\,K to $-1.23\times10^6 2\,K. Our \textit{ab initio} electronic structure calculations yield value total moment about 6.9 $\mu_B$/f.u. magnetocrystalline anisotropy energy density...
We report structure, susceptibility, and specific heat studies of stoichiometric off-stoichiometric poly- single crystals the $A$-site spinel compound $\mathrm{FeS}{\mathrm{c}}_{2}{\mathrm{S}}_{4}$. In samples, no long-range magnetic order is found down to 1.8 K. The susceptibility these samples field independent in temperature range 10--400 K does not show irreversible effects at low temperatures. contrast, with iron excess shows substantial dependence high temperatures manifests a...
Ternary potassium-iron sulfide, KFeS2, belongs to the family of highly anisotropic quasi-one-dimensional antiferromagnets with unusual "anti-Curie-Weiss" susceptibility, quasi-linearly growing a rising temperature up 700 K, an almost vanishing magnetic contribution specific heat, drastically reduced moment, etc. While some measurements can be satisfactorily described, deficiency entropy changes upon transition and spin state iron ion remains challenge for further understanding magnetism. In...
Abstract A new heptanuclear iron(III) oxide pivalate cluster [Fe 7 O 4 (OH) 2 (O CCMe 3 ) 11 (bpm) (H O)] ( 1 (bpm = 2,2′‐bipyrimidine) has been prepared and characterized. features an asymmetric {Fe 6 } framework based on two corner‐sharing (μ ‐O) groups, themselves comprising ‐O)} motifs that are formally retained from the precursor used in thesynthesis of . Compared to existing Fe III carboxylate clusters, fragment exhibits unusually high Fe:O ratio, with all seven oxygen sites...
A new μ3-oxo trinuclear chromium(III) propionate cluster, [Cr3(μ3-O)(O2CCH2CH3)6(pyr)3]NO3·0.25(H2O) (1), has been synthesized by reaction of a precursor [Cr3(μ3-O)(O2CCH2CH3)6(H2O)3]NO3 with pyrazol ligand (pyr) and characterized IR spectroscopy, single-crystal X-ray structure determination, thermal analysis. Magnetic susceptibility magnetization studies revealed antiferromagnetic exchange interactions within the Cr(III) cluster (J = −11.9 cm−1) determined electronic ground state (S ½) compound.