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Mercury(II) iodide

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Identification
Molecular formula
HgI2
CAS number
7774-29-0
IUPAC name
tetraiodomercury(2-)
State
State

The compound is a solid at room temperature.

Melting point (Celsius)
259.00
Melting point (Kelvin)
532.15
Boiling point (Celsius)
350.00
Boiling point (Kelvin)
623.15
General information
Molecular weight
454.40g/mol
Molar mass
654.3900g/mol
Density
7.5400g/cm3
Appearence

Mercury(II) iodide is a bright scarlet-red solid at room temperature, appearing in the form of crystalline powder.

Comment on solubility

Solubility of Tetraiodomercury(II) Ions

Tetraiodomercury(II), denoted as HgI42-, showcases interesting solubility characteristics due to its unique structure and composition. The solubility of this compound is influenced by several factors:

  • Polar Nature: The presence of iodine atoms contributes to the polar nature of tetraiodomercury(II), which can enhance solubility in polar solvents.
  • Complex Formation: This compound can form complexes with various cations, which may influence its solubility in solution. The stability of these complexes is vital for its behavior in different solvents.
  • Temperature Effect: As with many salts, the solubility may increase with temperature, making it crucial to consider these conditions in practical applications.
  • Solvent Interaction: Tetraiodomercury(II) may be more soluble in specific solvents, such as dimethyl sulfoxide (DMSO) or other polar aprotic solvents, compared to water.

To summarize, while tetraiodomercury(II) exhibits varying solubility depending on its environment, understanding the nature of interactions involved is essential for harnessing its full potential in chemical processes.

Interesting facts

Interesting Facts about Tetraiodomercury(II)

Tetraiodomercury(II), often referred to as mercury(II) iodide, is an intriguing chemical compound with a rich history in both chemistry and medicine. Here are some engaging facts that highlight its significance:

  • Historical Significance: Tetraiodomercury(II) was first synthesized in the early 19th century and was widely used as an antiseptic and a reagent in various chemical reactions.
  • Chemical Versatility: This compound serves as an important precursor in the synthesis of other mercury-containing chemicals and complexes, showcasing its utility in advanced organic chemistry.
  • Biological Applications: In medicinal chemistry, tetraiodomercury(II) was used in early veterinary medicine, although its usage has declined due to toxicity concerns.
  • Colorful Chemistry: The compound typically exhibits a vibrant color due to its unique molecular structure, making it an interesting subject of study in coordination chemistry.
  • Environmental Impact: Understanding its behavior in various environments is crucial, as mercury compounds pose significant health risks and their environmental persistence raises concerns.
  • Comedic Quip: It's often humorously remarked that if you think about mercury, "mercurial" behavior may pertain to both the element and some of its reactions!

In conclusion, tetraiodomercury(II) is more than just a chemical formula; it embodies a blend of history, utility, and importance in the field of chemistry. Its multifaceted roles remind scientists and students alike of the intricate relationship between chemistry and the world around us.

Synonyms
tetraiodomercurate(2-)
tetraiodomercury(2-)
CHEBI:36576
tetraiodomercurate(II)
tetraiodidomercurate(II)
tetraiodidomercurate(2-)
[HgI4](2-)
Q27116886