BINUCLEAR CRYSTALLINE COMPLEXES OF RARE-EARTH IONS (3+), METHOD FOR PRODUCTION THEREOF, METHOD OF PRODUCING MAGNETIC POLYMER COMPOSITES, USE OF MAGNETIC POLYMER COMPOSITES AS PHOTOSENSITIVE MAGNETIC MEDIA FOR SPINTRONICS AND MEMORY DEVICES Russian patent published in 2020 - IPC C01F17/30 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing crystalline complexes of rare-earth ions (3+) of general formula (REE)₂L₃(NO)₃⋅nCH₃OH, where rare-earth elements - lantanoid ions (3+), n = 2–4, L is a photochromic ligand of a series of dithienylethene (1E,2E)-3,4-bis(2,5-dimethylthiophen-3-yl)-N,N'-dihydroxy-cyclopent-3-ene-1,2-diimine, as well as derivatives thereof. Method involves reacting alcohol solutions of salts of rare-earth elements (NO₃)₃ with a photochromic ligand of a series of dithienylethene (1E,2E)-3,4-bis(2,5-dimethylthiophen-3-yl)-N,N'-dihydroxy-cyclopent-3-ene-1,2-diimine or derivatives thereof. Invention also relates to a method of producing polymer composites containing not less than 10 wt. % complexes (REE)₂L₃(NO)₃⋅nCH₃OH.

EFFECT: invention enables to obtain novel photomagnetic polymer composites which can be used as novel photosensitive magnetic media for spintronics and memory devices.

7 cl, 12 dwg, 1 ex