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Information × Registration Number 0224U031761, 0122U001811 , R & D reports Title Design of multifunctional metal complexes based on new polychelating ligands with magneto-luminescent properties for modern technologies popup.stage_title Head Amirkhanov Volodymyr M., Доктор хімічних наук Registration Date 12-06-2024 Organization Taras Shevchenko National University of Kyiv popup.description2 New complexes of lanthanides with bis-chelating ligands of carbonylamidophosphate and sulfonylamidophosphate types were synthesized and studied: [Ln2(L)3·nSolv], [Ln2(L)3bipy2], [NaLn(L)4], [Ln5(L)6(μ-(L)4(μ3-OH)4(μ4-OH)], [Ln(NO3)(L)2(bipy)] (H2L= bis-chelating ligand). Their structure and physicochemical properties were studied. It was established types of coordination polyhedra of central metal atoms, methods of coordination of ligands, and types of supramolecular bonds. A series of neutral trans-thiocyanate mononuclear spin crossover complexes (SCO) [FeIIL(NCS)2] based on tetradentate ligands L was determined. It was shown that the thermally induced spin transitions of the compounds are characterized by sharp transitions with average critical temperatures/hysteresis loop width in the range of 190-252/5-14 K, while photogenerated metastable high-spin phases (HS*) are characterized by relaxation temperatures in the range of 44-59 K. X-ray study of crystals showed that almost all compounds undergo a reproducible violation of lattice symmetry in combination with thermally induced SCO.  Product Description popup.authors Holenya Іryna О. Znoviak Kateryna O. Kariaka Nataliia S. Ovchynnikov Volodymyr A. Serediuk Maksym L. Trush Viktor O. popup.nrat_date 2024-06-12 Close