LUMINESCENT COMPLEXES OF RARE-EARTH ELEMENTS WITH PYRAZOLE-CONTAINING 1,3-DIKETONES AND METHOD OF PRODUCING SAID COMPOUNDS Russian patent published in 2012 - IPC C07F5/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a complex of rare-earth elements of general formula [Ln(L₁)₄]^-M⁺, where Ln is an ion of a trivalent rare-earth element, e.g., Nd, Pr, Sm, Eu, Tb, Dy, Ho, Tm, Er, Yb; L₁ is a diketonate ligand which is a derivative of 1,3-dipyrazolyl propanediol-1,3 of general formula where R₁, R₃ denote an alkyl, fluoroalkyl, aryl, cycloalkyl or heterocyclic substitute, R₂, R₄ denote a hydrogen atom, alkyl, fluoroalkyl, aryl, cycloalkyl or heterocyclic substitute, a halogen atom, a CF₃ or NO₂ group, wherein conjugation of the diketone fragment can be carried out symmetrically or asymmetrically at position 3, 4 or 5 of each pyrazole ring, M⁺ is a monovalent cation of an alkali metal, e.g., Li, K, Na, Rb, Cs, an NH₄ ⁺ ion, a residue of a quaternary ammonium base, e.g., ⁺N(Me)₄, ⁺N(Et)₄, ⁺N(Bu)₄, a pyridinium cation or a secondary amine cation, e.g., piperidinium or pyrrolidinium, or a tertiary amine, e.g., triethylammonium or trimethylammonium. There is also methed of producing complex.

EFFECT: complexes have high luminescence intensity and can be used in electro-optical devices.

2 cl, 3 dwg, 9 ex