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Names | |||
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Preferred IUPAC name
Diboron tetrafluoride | |||
Systematic IUPAC name
Tetrafluorodiborane(4) | |||
Identifiers | |||
3D model (JSmol)
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ChemSpider | |||
PubChem CID
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CompTox Dashboard (EPA)
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Properties | |||
B2F4 | |||
Molar mass | 97.61 g·mol−1 | ||
Appearance | Colorless gas | ||
Density | 4.3 kg/m3 (gas) | ||
Melting point | −56 °C (−69 °F; 217 K) | ||
Boiling point | −34 °C (−29 °F; 239 K) | ||
Thermochemistry | |||
Heat capacity (C)
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79.1 J/mol K | ||
Std molar
entropy (S⦵298) |
317.3 J/mol K | ||
Std enthalpy of
formation (ΔfH⦵298) |
-1440.1 kJ/mol | ||
Gibbs free energy (ΔfG⦵)
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-1410.4 kJ/mol | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Diboron tetrafluoride is the inorganic compound with the formula (BF2)2. A colorless gas, the compound has a halflife of days at room temperature. It is the most stable of the diboron tetrahalides,[1] and does not appreciably decompose under standard conditions.[2]