METHOD FOR PRODUCING METALLOCENE HALIDES

摘要

The inventive method for producing metallocene halogenides having a general formula Cp2MX2 (1), wherein Cp is a cyclopentadien composition, M is a metal of a IV B group (Zr, Hf, Ti), X is a halogen, involves the synthesis carried out by means of interaction of a halogen of corresponding metal with the cyclopentadien composition and diethylamine at a molar ratio between reagents equal to 1:(2-2, 5):2, respectively in a chloroform medium at the boiling temperature thereof and, preferably, in an inert-gas atmosphere. Said synthesis is carried out during a time ranging from 2 to 10 hours. The method also consists in separating a target product from amine hydrochloride by dissolving said amine hydrochloride in aliphatic alcohol and, afterwards by extracting the target product by filtering and drying it. The inventive method makes it possible to produce the target product having the yield of hafnocene and zirconocene halides ranging from 55 to 60 %, the yield of titanocene halogenide ranging from 80 to 90 %, and 90 % of a basic substance. In order to obtain products with a high content of the basic substance, i.e. at a level of 98-99 %, the dry target product is purified by means of recristallisation.