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Names | |
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IUPAC name
Neptunium(IV) fluoride
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Other names
Neptunium tetrafluoride
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Identifiers | |
3D model (JSmol)
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PubChem CID
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Properties | |
NpF4 | |
Molar mass | 313 g/mol |
Appearance | Green solid[1] |
Structure | |
Monoclinic, mS60[1] | |
C2/c, No. 15[2] | |
a = 1.27 nm, b = 1.0082 nm, c = 0.833 nm α = 90°, β = 126.03°, γ = 90°
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Lattice volume (V)
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0.86256 nm3 |
Formula units (Z)
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12 |
Thermochemistry | |
Heat capacity (C)
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116 ± 4 J/mol·K[1] |
Std molar
entropy (S⦵298) |
148 ± 3 J/mol·K[1] |
Std enthalpy of
formation (ΔfH⦵298) |
−1874 ± 16 kJ/mol[1] |
Gibbs free energy (ΔfG⦵)
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-1783 ± 16 kJ/mol[1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Neptunium(IV) fluoride or neptunium tetrafluoride is a inorganic compound with the formula NpF4. It is a green salt and is isostructural with UF4.[3]
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