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Tetrafluoroborate

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Identification
Molecular formula
BF4−
CAS number
13814-96-5
IUPAC name
tetrafluoroborate
State
State

At room temperature, tetrafluoroborate compounds are typically solid, existing in the form of crystalline salts depending on the counterion (cation) they are paired with.

Melting point (Celsius)
-150.00
Melting point (Kelvin)
123.00
Boiling point (Celsius)
760.00
Boiling point (Kelvin)
1 033.00
General information
Molecular weight
86.81g/mol
Molar mass
86.8100g/mol
Density
2.8100g/cm3
Appearence

Tetrafluoroborate compounds typically appear as crystalline solids. The exact color and texture can vary depending on the associated cation but are generally colorless or white.

Comment on solubility

Solubility of Tetrafluoroborate

Tetrafluoroborate, with its chemical formula BF4-, is a fascinating compound known for its unique solubility characteristics.

General Solubility Trends

Tetrafluoroborate ions are typically soluble in a variety of solvents. Here are some key points regarding its solubility:

  • Aqueous Solubility: Tetrafluoroborate salts, such as NaBF4, exhibit high solubility in water due to the ion-dipole interactions between the ions and water molecules.
  • Solubility in Organic Solvents: Although primarily soluble in polar solvents, certain tetrafluoroborate compounds can also dissolve in organic solvents like acetone or alcohols to varying degrees.
  • Temperature Dependency: As is common with many ionic compounds, the solubility of tetrafluoroborate can increase with temperature, making it crucial to consider thermal conditions during applications.

Factors Influencing Solubility

Several factors affect the solubility of tetrafluoroborate:

  • Ionic Strength: The presence of other ions in solution can enhance or inhibit the solubility of tetrafluoroborate.
  • pH Levels: The solubility may also be influenced by the pH of the solution, although tetrafluoroborate remains stable across a range of pH conditions.
  • Counterions: The choice of the counterion with which tetrafluoroborate is paired can significantly impact its overall solubility properties.

In conclusion, tetrafluoroborate stands out as a soluble compound, particularly in polar solvents, and the understanding of its solubility behavior is critical for various chemical applications.

Interesting facts

Interesting Facts about Tetrafluoroborate

Tetrafluoroborate, commonly denoted as BF4-, is an intriguing anion that plays significant roles across various fields of chemistry. Here are some fascinating points about this compound:

  • Versatile Applications: Tetrafluoroborate is often utilized in the synthesis of organometallic compounds, which can lead to the development of new materials with unique properties.
  • Ion Exchange: It participates in ion exchange processes, enhancing the performance of electrolytes in batteries, especially in lithium-salt formulations for rechargeable batteries.
  • Solubility and Stability: Its salts are known for their remarkable stability and solubility in various solvents, making them ideal for numerous chemical reactions.
  • Role in Coordination Chemistry: Tetrafluoroborate acts as a ligand, and its coordination with metals can lead to a diverse range of complex compounds that exhibit unique chemical behavior.
  • Environmental Considerations: While tetrafluoroborate itself is relatively safe, the precursors and certain applications can raise environmental concerns, emphasizing the importance of sustainability in chemical practice.

Research into tetrafluoroborate continues to be substantial, especially in the context of green chemistry and materials science. As a chemist or chemistry student, you might find the dynamics of its reactivity and application potential both surprising and inspiring!

Synonyms
Tetrafluoroborate
Fluoborate
14874-70-5
fluoroborate
tetrafluoroborate(1-)
tetrafluoroborate ion
CHEBI:38899
BF4(-)
Hydrogen Tetrafluoroborate(1-) (48% solution in H2O)
Borate(1-), tetrafluoro-
fluorborate
Borofluoric Acid; Fluoroboric Acid; Tetrafluoroboric Acid
tetrafluroborate
Tetrafluoroborat
tetrafluoroboranuide
tetrafluoridoborate(1-)
tetrafluoridoborate(III)
SCHEMBL6216
TETRAFLUOROBORATE ANION
4YCF3545OY
BF4-
CHEMBL1789400
DTXSID4043773
BDBM26993
TETRAFLUOROBORATE (BF41-)
[BF4](-)
BF4
Q27118029
61674-41-7