METHOD OF PREPARING DISSIMILAR-LIGAND COMPLEXES OF RARE-EARTH ELEMENTS WITH ACETYLACETONE AND CIS- OR TRANS-BUTEDIOIC ACID Russian patent published in 2004 - IPC

FIELD: organic synthesis.

SUBSTANCE: invention, in particular, relates to complex compounds having general formula:

which may be briefly expressed as LnAA₂L wherein Ln represents rare-earth element, AA acetylacetone, and L cis- or trans-butedioic acid anion. To accomplish safe one-stage preparation of such compounds, invention proposes performing electrolysis of solution of acetylacetone, cis- or trans-butedioic acid, and lithium perchlorate in acetonitrile taken at ratio 2:1:1:500, respectively, with rare-earth metal anode and inert cathode, the former having potential between 0.5 and 1 v, and utilizing a single semiconducting diode included in series with electrolyzer to generate asymmetric alternate current. Precipitate formed during the electrolysis process is separated, washed with absolutely dry alcohol, and dried. The compounds obtained can be widely used as components of starting materials for production of polymers possessing elevated radiation stability allowing them to be employed for solving tasks of spatial material science.

EFFECT: enlarged resource for production of radiation-resistant polymers.

1 dwg, 4 ex