SU106396A1 - The method of producing tetra- (a-thienyl) -bore - Google Patents

Description

The subject of the invention is a method for crawling / tetra-cx-thienyl) borky, with, coagulating with a reagent to determine cesium or rubidium.

For the preparation of this reagent, a-thien1 L-magnesium

1.2 g potassium fluoroborate are added

and a mixture of iiiopri 4HO is stirred in a cobalt flask. The reaction proceeds from a large one ;; -, heating and yakan1; the separation of the mixture. The precipitate thus formed is filtered through a glass filter and washed several times with pure ether. To separate the tetra- (-thienyl) -bore from potassium fluoroborate, the precipitate is dissolved in nitromethane. After filtering the ester (or benzene) is added to the purified solution until a white precipitate of tetra- (2c-thienyl) precipitates is precipitated. The latter is filtered off and washed with afnrom.

For the determination of cesium, an aqueous solution of tetra- (a -penyl) borticle is added to an aqueous solution of cesium salts. In this case, the precipitate of tetra- (a-thienyl) -borecesi, after washing with water, is dried in a vacuum (extractor; torus over phosphoric acid) m.

D. m.e. pellidized rubidic aqueous solution of a tetra- (a-not 1nl) base was added to an aqueous solution of rubnd salts; . In this case, the first precipitate of gora (a-thienyl) borrubide, and after being washed with water, is released in a desiccator.

Tetra- (x-thienyl) -borkali can be used to treat separation of cesium (and rubidium) from other AND, Christmas tree metap. Lines.

PRIORITY AREA

Claims (2)

1, a method for producing tetra- (aieinl) -borkaln, about tl and h ys tedM, that potassium fluoroborate is acted upon by halogenum-thioyl magnesium. 2. The use of the preparation according to claim 1 of the tetra- (a-tinyl) -batch in the form of an aqueous solution to determine cesium and rubidium in a solution of their salts.