Chloro complexes in solution

Because mercury forms relatively stable hydroxo, sulfato, and chloro complexes in solution, the solubilities and relative stabilities of mercury minerals depend heavily on ambient solution compositions. Figure 4 illustrates the calculated effect of pH and total sulfate on the solubility of schuetteite. The curves take into account all complexes for which data are available in Martell and Smith (18) and precipitation of HgO they cross when changes in solution composition result in changes in dominance among complexes. Schuetteite is quite soluble relative to HgS and elemental mercury under common conditions. 

Hennig, C., Tutschku, J., Rossberg, A., Bernhard, G., Scheinost, A. C., Comparative EXAFS investigation of uranium(VI) and -(IV) aquo chloro complexes in solution using a newly developed spec-troelectrochemical cell, Inorg. Chem., 44, (2005), 6655-6661. Cited on pages 245,441, 694. 

Hennig C, Tutschku J, Rossberg A, Bernhard G and Scheinost A 2005 Comparative exafs investigation of uranium (vi) and-(iv) aquo chloro complexes in solution using a newly developed spectroelectrochemical cell. Inorganic chemistry 44( 19), 6655-6661. 

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