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説明

Mercury(I) sulfate, commonly called mercurous sulfate, Hg2SO4, is a metallic compound that forms a white, pale yellow or beige powder. It is a metallic salt of sulfuric acid produced by replacing both hydrogen atoms with mercury(I). It is very toxic; it can be fatal if inhaled, ingested, or absorbed by skin. The crystal structure of mercurous sulfate is made up of Hg2 21 dumbbells and SO4 22 anions as main building units. The Hg2 21 dumbbell is surrounded by 4 oxygen atoms with Hg?O distance between 2.23 and 2.93 ? , while the Hg-Hg distance is about 2.50 ? . Mercury(I) sulfate has the mercury atoms arranged in doublets with a bond distance of 2.50 ? . The metal atom doublets are oriented parallel to the a-axis in a unit cell. Mercury doublets form part of infinite chain SO4-Hg-Hg-SO4-Hg-Hg-... The Hg-Hg-O bond angle is 165° ± 1° . The chain crosses the unit cell diagonally. The mercury sulfate structure is held together by weak Hg-O interactions. The SO4 does not act as a single anion, but rather coordinated to the mercury metal.