METHOD FOR OBTAINING SULFOBROMIDES OF ABCTYPE Russian patent published in 2017 - IPC C30B7/14 C30B30/06 C30B29/12 C30B29/62 

FIELD: chemistry.

SUBSTANCE: invention relates to a technology for obtaining single crystal whiskers of sulfobromides of trivalent metals SbSBr, BiSBr, CrSBr, which can be used as alloying additives in obtaining composite piezoelectric materials with specified properties in hydroacoustic transformers and transformers of electromagnetic energy into mechanical energy. SbSBr is obtained from sodium sulfide Na₂S, antimony chloride SbCl₃, potassium bromide KBr; BiSBr is obtained from sodium sulphide Na₂S, bismuth chloride BiCl₃, potassium bromide KBr; CrSBr is obtained from sodium sulphide Na₂S, chromium chloride CrCl₃, potassium bromide KBr; the synthesis of each desired product is carried out by the exchange interaction in the saturated hydrochloric acid solution of the corresponding metal chloride by means of dissolving in it crystalline potassium bromide and adding dropwise concentrated solution of sodium sulfide, with the subsequent treatment of the resulting reaction mixture with ultrasonic vibrations till forming a precipitate.

EFFECT: increasing the desired product purity due to eliminating the oxidation of precursors and chemicals, increasing the method performance due to reducing the antimony, bismuth, and chromium sulfobromides synthesis time up to 2-5 minutes, excluding the explosion hazard due to excluding high-temperature synthesis.

3 cl, 3 dwg, 1 tbl, 3 ex