Experimental study demonstrates efficient ultrapurification in synthesized tin diiodide samples, indicating a viable route to produce extrapure-grade materials.
This paper presents results of a study aimed at developing physicochemical principles of tin diiodide (SnI2) synthesis and ultrapurification by high-temperature fractional distillation. SnI2 samples were synthesized by different processes: in solution, from elemental mixtures at atmospheric pressure, and in a vacuum. Next, the samples were purified by fractional distillation in a plate column. Separation factors of difficult-to-remove impurities in the SnI2-based liquid–vapor system have been determined experimentally. We have prepared and characterized extrapure-grade SnI2 containing 10 ppm by weight of trace impurities
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Бреховских et al. (2019) studied this question.
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