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Heptafluorotantalum

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Identification
Molecular formula
7Ta-2
IUPAC name
heptafluorotantalum(2-)
State
State

At room temperature, heptafluorotantalum exists in the solid state. This compound, however, tends to move towards the gaseous state when subjected to elevated temperatures owing to its relatively high volatility for a fluoride compound.

Melting point (Celsius)
-30.00
Melting point (Kelvin)
243.15
Boiling point (Celsius)
390.00
Boiling point (Kelvin)
663.15
General information
Molecular weight
349.95g/mol
Molar mass
349.9480g/mol
Density
3.4000g/cm3
Appearence

Heptafluorotantalum is typically seen as a colorless or lightly colored crystalline solid, appearing generally hygroscopic. The compound is notable for its ability to absorb moisture from the environment. The solid's crystalline structure often renders it somewhat translucent under certain conditions, contributing to a distinctive glass-like appearance.

Comment on solubility

Solubility of Heptafluorotantalum(II)

Heptafluorotantalum(II), or TaF72-, is an intriguing compound in terms of solubility. Its solubility characteristics can be attributed primarily to the presence of fluorine atoms, which impart unique properties to the compound. Below are some essential points regarding its solubility:

  • Polar Nature: The highly electronegative fluorine atoms contribute to a polar nature, which can enhance solubility in polar solvents.
  • Limited Water Solubility: Generally, transition metal fluorides exhibit limited solubility in water, and TaF72- is likely no exception to this trend.
  • Solubility in Organic Solvents: Some studies indicate potential solubility in organic solvents, particularly those that can stabilize the anionic form of the compound.
  • Temperature Dependence: The solubility may vary significantly with temperature, often increasing as conditions change.
  • Complex Formation: In certain conditions, TaF72- may form complexes which could modify its overall solubility behavior.

In summary, the solubility of heptafluorotantalum(II) is multifaceted, depending on both environmental conditions and the medium in which it is placed. Understanding these solubility dynamics is crucial for applications in various fields of chemistry.

Interesting facts

Interesting Facts about Heptafluorotantalum(2-)

Heptafluorotantalum(2-) is a fascinating compound that showcases the unique characteristics and chemistry of tantalum. Here are some engaging facts that highlight its significance:

  • Fluorination Mastery: This compound features tantalum surrounded by seven fluorine atoms, which results in a highly stable ionic structure. Fluorination often enhances the chemical reactivity and stability of metal compounds, making heptafluorotantalum(2-) particularly interesting for various applications.
  • Industrial Relevance: Heptafluorotantalum(2-) plays a role in the electronics industry, particularly in semiconductor manufacturing. Tantalum and its fluorinated derivatives are valued for their thermal and chemical stability, making them essential for high-performance capacitors and thin-film deposition processes.
  • Unique Coordination Chemistry: The unique coordination of fluorine atoms around tantalum gives rise to interesting coordination geometries. This compound can serve as a model for studying interactions in transition metal complexes, especially in environments with strong electronegative ligands.
  • Environmental Impact: The use of tantalum and its fluorinated compounds raises discussions about sustainability and environmental considerations. Recycling and responsible sourcing of tantalum are crucial topics, especially given the metal's association with conflict minerals.
  • Research and Development: Continuous research into heptafluorotantalum(2-) is essential for advancing materials science. Studies may focus on its behavior in various chemical reactions, potential applications in catalysis, and the synthesis of new fluorinated compounds that offer novel properties.

In conclusion, heptafluorotantalum(2-) is a remarkable compound that exemplifies the beauty of inorganic chemistry and the intricate relationships between elements. The study of such compounds not only furthers our understanding of materials but also aids in the technological advancements critical for a sustainable future.