Unit cell of lithium borohydride at room temperature
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Names | |
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IUPAC name
Lithium tetrahydridoborate(1–)
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Other names
Lithium hydroborate,
Lithium tetrahydroborate Borate(1-), tetrahydro-, lithium, lithium boranate | |
Identifiers | |
3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.037.277 |
PubChem CID
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RTECS number |
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
LiBH4 | |
Molar mass | 21.784 g/mol |
Appearance | White solid |
Density | 0.666 g/cm3[1] |
Melting point | 268 °C (514 °F; 541 K) |
Boiling point | 380 °C (716 °F; 653 K) decomposes |
reacts | |
Solubility in ether | 2.5 g/100 mL |
Structure[2] | |
orthorhombic | |
Pnma | |
a = 7.17858(4), b = 4.43686(2), c = 6.80321(4)
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Lattice volume (V)
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216.685(3) A3 |
Formula units (Z)
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4 |
[4]B | |
Thermochemistry | |
Heat capacity (C)
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82.6 J/(mol⋅K) |
Std molar
entropy (S⦵298) |
75.7 J/(mol⋅K) |
Std enthalpy of
formation (ΔfH⦵298) |
−198.83 kJ/mol |
Hazards | |
> 180 °C (356 °F; 453 K) | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Lithium borohydride (LiBH4) is a borohydride and known in organic synthesis as a reducing agent for esters. Although less common than the related sodium borohydride, the lithium salt offers some advantages, being a stronger reducing agent and highly soluble in ethers, whilst remaining safer to handle than lithium aluminium hydride.[3]
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