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

FIELD: chemistry.

SUBSTANCE: invention relates to a rare-earth complex of general formula [Ln(L₁)₃L₂], 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 1,3-dipyrazolyl propanediol-1,3 derivative of general formula , where R₁, R₃ denote an alkyl, fluoroalkyl, aryl, cycloalkyl or heterocyclic substitute, R₂, R₄ denote a hydrogen atom, an alkyl, fluoroalkyl, aryl, cycloalkyl or heterocyclic substitute, a halogen atom, a CF₃ or NO₂ group. The diketone fragment can be conjugated symmetrically or asymmetrically at positions 3, 4 or 5 of each pyrazole ring, L₂ is an auxiliary bidentate N, P or O-containing ligand, e.g., 1,10-phenanthroline (Phen), 2,2-bipyridyl (Bipy), triphenylphosphine oxide (TPPO), tri-n-octylphosphine oxide (TOPO), diethylene glycol dimethyl ether (Diglim). A method of producing said compound is also provided.

EFFECT: invention enables to obtain novel rare-earth complexes with high luminescence intensity.

2 cl, 3 dwg, 10 ex