A5059990395- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Metal complexes synthesis and properties
- Magnetism in coordination complexes
- Crystal structures of chemical compounds
- Lanthanide and Transition Metal Complexes
- Crystallography and molecular interactions
- Organometallic Compounds Synthesis and Characterization
- Metal-Organic Frameworks: Synthesis and Applications
- Chemical Synthesis and Characterization
- Synthesis and Reactions of Organic Compounds
- Thallium and Germanium Studies
- Fluorine in Organic Chemistry
- Radioactive element chemistry and processing
- Organometallic Complex Synthesis and Catalysis
- Synthesis and biological activity
- Synthesis and Biological Evaluation
- Metal-Catalyzed Oxygenation Mechanisms
- Synthesis and characterization of novel inorganic/organometallic compounds
- Chemical Thermodynamics and Molecular Structure
- Chemical Synthesis and Analysis
- Synthesis and Characterization of Heterocyclic Compounds
- Molecular Sensors and Ion Detection
- Crystal Structures and Properties
- Structural and Chemical Analysis of Organic and Inorganic Compounds
Institute for Single Crystals
2016-2025
National Academy of Sciences of Ukraine
2016-2025
V. N. Karazin Kharkiv National University
2018-2022
Institute for Scintillation Materials
2005-2015
Taras Shevchenko National University of Kyiv
2007
The supramolecular architecture of crystals five fused hydrocarbons has been analyzed using an approach based on consideration the energy intermolecular interactions. This method allows unambiguous recognition strongly bonded fragments which may be considered as basic structural motif (BSM) crystal packing. Replacement molecules by energy-vector diagrams (hedgehogs) their interactions represents a very efficient tool for graphical representation structure from viewpoint topology...
Analysis of the strengths and directionality intermolecular interactions in crystals containing only one type supramolecular synthon allows suggestion a general classification molecular depending on their basic structural motifs. All may be divided four classes namely (I) with isotropic packing building units; (II) columnar where motif (BSM) is chain/column; (III) layered layers as BSM; (IV) columnar-layered chains/columns primary secondary BSM. Taking into account participation different...
An unprecedented hexanuclear heterotrimetallic Fe/Cu/Co complex bearing two Cu(mu-O)2Co(mu-O)2Fe cores is easily prepared by self-assembly and acts as a remarkable catalyst for the peroxidative oxidation of cycloalkanes under mild conditions.
Abstract The reaction of Salen‐like Zn II and Ni precursors with carbacylamidophosphate lanthanide moieties yields six new types 3d–4f compounds. complexes were characterized by means 1 H, 31 P NMR IR spectroscopy, elemental analysis, ESI mass spectrometry, X‐ray diffraction analysis. Depending on the Schiff base ligands, ion adopts either a square‐planar or an octahedral geometry, whereas has tetragonal‐pyramidal geometry. coordination number lanthanides is nine ten. Hydrolytic activities...
Two new tetranuclear complexes, [Zn2Cr2(NCS)4(Dea)2(HDea)2]·4DMSO (1; DMSO = dimethyl sulfoxide) and [Zn2Cr2(NCS)4(Dea)2(HDea)2]·2CH3CN (2), were prepared from zinc oxide, Reinecke's salt, NH4[Cr(NCS)4(NH3)2]·H2O, ammonium thiocyanate, a nonaqueous solution of diethanolamine (H2Dea) in reaction carried out under open air. Both compounds have similar centrosymmetric crystal structures based on {Zn2Cr2(μ3-O)2(μ-O)4} core. Variable-temperature magnetic susceptibility measurements 1 2 show weak...
La–Eu substitution affects the LnPip<sub>3</sub>Phen properties.
Abstract New lanthanide dimethyl‐N‐benzoylamidophosphate (HL) based tetrakis‐complexes NEt 4 [LnL ] (Ln 3+ =La, Nd, Sm, Eu, Gd, Tb, Dy) are reported. The complexes characterized by means of NMR, IR, absorption, and luminescent spectroscopy as well elemental, X‐Ray, thermal gravimetric analyses. phenyl groups the four ligands complex anion directed towards one side, while methoxy in opposite which makes under consideration structurally similar to calixarenes. effect changing alkali metal...
A new mixed-ligand complex {[Со(С4Н4О4)2Ру]2H2O}n was synthesized via the interaction of equimolar amounts cobalt nitrate and sodium succinate in presence pyridine at pH 5.5–6.0. The investigated by X-ray structure analysis, elemental UV/VIS IR spectroscopies, differential thermal analysis. is a one-dimensional coordination polymer crystallizes orthorhombic space group Pbca with unit cell parameters a=11.8945 Å, b=8.9064 c=15.1116 ===900. atom has slightly distorted octahedral N2O4...
A new compound, an adduct of the aqua complex bis(tert-butylacetoacetato)Ni(II) with starting β-ketoester, was synthesized and characterized by X-ray analysis. According to structural data, crystal system is triclinic, space group P1–, a = 10.0383(12) Å, b 11.3490(10) c 13.5420(15) α 87.323(7)º, β 78.609(8)°, γ 87,412(7)º. The molecular structure corresponds formula [Ni2(C8H13O3)4(H2O)2.2C8H14O3]. In crystal, nickel binuclear in form co-crystal tert-butylacetoacetate ratio 1:2. coordination...
An X-ray diffraction study of three bicyclic aziridines (2,2-dimethyl-4,6-diaryl-1,3-diazabicyclo-[3.1.0]hex-3-enes) reveals the absence strong specific intermolecular interactions in crystals. Therefore, crystal packing has been analyzed on basis quantum-chemical calculations energy between basic molecules located asymmetric part unit cell and belonging to its first coordination sphere crystal. The analysis indicates that structures are layered. total molecule other layer is significantly...
AbstractSearching for prospective luminescent materials, the series of new lanthanide coordination compounds CsLnL4 (Ln = La, Pr, Nd, Sm – Er, and Yb; L− {C6H5CONPO(OCH3)2}-) was synthesized. X-ray diffraction studies CsNdL4 CsYbL4 have been performed establishing polymeric structures tetrakis-complexes built from [LnL4]− anions cesium cations functioning as linkers. The IR, absorption, emission, excitation spectra, decay time measurements at 298 77 K, well thermal gravimetric analyses, were...
The design, synthesis, and study of lanthanide coordination compounds with luminescent magnetic properties attractive in modern technologies is still a pressing challenging task. In the present work, series tetrakis-carbacylamidophosphate PPh4[LnL4] (where HL = diphenyl-N-benzoylamidophosphate) several ions such as NdIII, SmIII, DyIII, TmIII was prepared studied by X-ray analysis luminescence spectroscopy at 293 77 K, well measurements. Coordination are not isostructural, but type same. All...
Using results of X-ray diffraction study supramolecular architecture crystals 2-(4-iodophenyl)-1,10-phenanthroline has been analyzed on the basis quantum-chemical calculations intermolecular interactions energy. It is demonstrated that these have three levels organization. Molecules form stacked dimers with highest binding energy (first level). These represent basic unit infinite columns stabilized by stacking between (second The neighbouring very close. This does not allow to figure out any...
Model complexes of hexaethynylhexamethoxy[6]pericyclyne (HM6P) molecules, with or without dichloromethane (DCM) guests, have been calculated at the M05-2X/6-311G(d,p) DFT level. Analysis nonbonding interactions shows that cohesion supramolecular tubular assemblies previously observed in crystal state, relies mainly on C–H⋯O hydrogen bonds between axial ethynyl and equatorial methoxy substituents stacked HM6P C18 macrocycles a cyclohexane-like chair conformation. The intrinsic binding energy...
A series of pentanuclear lanthanide complexes Ln5L6(μ-L)4(μ3-OH)4(μ4-OH) (LnIII = Nd, Dy, Ho, Er, Yb; L– dimethyl N-benzoylamidophosphate ion, [C6H5C(O)–N–P(O)(OCH3)2]−) was obtained by the reaction sodium with corresponding nitrates. The cores formed as a result self-arrangement and their composition did not depend on ion. have been characterized single-crystal X-ray diffraction. absorption spectra were measured at 300 4 K. dysprosium ytterbium exhibited weak emission in visible IR regions,...