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Tetracyanidomercurate(II)

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Identification
Molecular formula
Hg(CN)42-
CAS number
14878-00-3
IUPAC name
tetracyanomercury(2-)
State
State

At room temperature, tetracyanidomercurate(II) is a solid. It is typically handled as a salt form, often with potassium (forming potassium tetracyanidomercurate(II)), which is commonly found in laboratories.

Melting point (Celsius)
240.00
Melting point (Kelvin)
513.15
Boiling point (Celsius)
375.00
Boiling point (Kelvin)
648.15
General information
Molecular weight
316.63g/mol
Molar mass
316.6320g/mol
Density
2.9800g/cm3
Appearence

Tetracyanidomercurate(II) typically appears as a crystalline solid, which can vary in color depending on the specific salt form and associated cation. In its pure form, it is often colorless to white.

Comment on solubility

Solubility of Tetracyanomercury(II)

Tetracyanomercury(II), with the formula Hg(CN)42−, is a fascinating compound whose solubility in various solvents reveals much about its chemical behavior. This compound is primarily known for its role in coordination chemistry and can exhibit distinct solubility characteristics.

When discussing the solubility of tetracyanomercury(II), we can observe the following key points:

  • Solubility in Water: Tetracyanomercury(II) tends to be soluble in water, owing to the presence of the polar cyanide ligands which can interact favorably with water molecules.
  • Solvent Interaction: The solubility can vary significantly depending on the ionic strength and pH of the solution. For example, an increase in ionic strength may enhance solubility due to the shielding effect on the charged species.
  • Complex Formation: This compound can form complexes with other metal ions in solution, potentially impacting its overall solubility and chemical dynamics.
  • Temperature Influence: Like many solutes, the solubility of tetracyanomercury(II) may also be sensitive to changes in temperature; generally, higher temperatures can increase solubility.

In summary, while tetracyanomercury(II) is generally soluble in water, several factors including ionic interactions, complexation, and temperature need to be considered to understand its solubility in different environments. Therefore, understanding the nature of this compound's solubility can aid in its practical applications and chemical reactions.

Interesting facts

Interesting Facts about Tetracyanomercury(II)

Tetracyanomercury(II), a fascinating coordination compound, has garnered attention in various fields of chemistry due to its unique properties and applications. Here are some intriguing aspects of this remarkable compound:

  • Complex Formation: Tetracyanomercury(II) demonstrates the ability to form intriguing complexes with various ligands, making it a subject of study in coordination chemistry.
  • Analytical Applications: This compound is often employed in analytical chemistry, particularly in the detection and quantification of other chemical species through electrochemical methods.
  • Research Potential: Tetracyanomercury(II) serves as a valuable precursor in the synthesis of other mercury complexes, opening avenues for research in fields like materials science and nanotechnology.
  • Environmental Concerns: As a mercury-containing compound, tetracyanomercury(II) raises environmental and health concerns, urging chemists to study its behavior and stability under various conditions.

In summary, tetracyanomercury(II) is more than just a chemical compound; it is a bridge to understanding complex coordination chemistry and addressing critical challenges in environmental science. As noted by many chemists, “the study of such compounds not only informs us about their properties but also enhances our understanding of the chemical universe.”