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Lithium borohydride information


Lithium borohydride
Unit cell of lithium borohydride at room temperature
Unit cell of lithium borohydride at room temperature
Names
IUPAC name
Lithium tetrahydridoborate(1–)
Other names
Lithium hydroborate,
Lithium tetrahydroborate
Borate(1-), tetrahydro-, lithium, lithium boranate
Identifiers
CAS Number
  • 16949-15-8 checkY
3D model (JSmol)
  • Interactive image
ChemSpider
  • 55732 checkY
ECHA InfoCard 100.037.277 Edit this at Wikidata
PubChem CID
  • 4148881
RTECS number
  • ED2725000
UNII
  • 8L87X4S4KP checkY
CompTox Dashboard (EPA)
  • DTXSID40895058 Edit this at Wikidata
InChI
  • InChI=1S/BH4.Li/h1H4;/q-1;+1 checkY
    Key: UUKMSDRCXNLYOO-UHFFFAOYSA-N checkY
  • InChI=1/BH4.Li/h1H4;/q-1;+1
    Key: UUKMSDRCXNLYOO-UHFFFAOYAS
SMILES
  • [Li+].[BH4-]
Properties
Chemical formula
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
Solubility in water
reacts
Solubility in ether 2.5 g/100 mL
Structure[2]
Crystal structure
orthorhombic
Point group
Pnma
Lattice constant
a = 7.17858(4), b = 4.43686(2), c = 6.80321(4)
Lattice volume (V)
216.685(3) A3
Formula units (Z)
4
Coordination geometry
[4]B
Thermochemistry
Heat capacity (C)
82.6 J/(mol⋅K)
Std molar
entropy (S298)
75.7 J/(mol⋅K)
Std enthalpy of
formation fH298)
−198.83 kJ/mol
Hazards
Autoignition
temperature
> 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).
checkY verify (what is checkY☒N ?)
Infobox references

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]

  1. ^ Sigma-Aldrich Product Detail Page.
  2. ^ J-Ph. Soulie, G. Renaudin, R. Cerny, K. Yvon (2002-11-18). "Lithium boro-hydride LiBH4: I. Crystal structure". Journal of Alloys and Compounds. 346 (1–2): 200–205. doi:10.1016/S0925-8388(02)00521-2.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  3. ^ Luca Banfi, Enrica Narisano, Renata Riva, Ellen W. Baxter, "Lithium Borohydride" e-EROS Encyclopedia of Reagents for Organic Synthesis, 2001, John Wiley & Sons. doi:10.1002/047084289X.rl061.pub2.

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Lithium borohydride

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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...

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Borohydride

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Borohydrides find wide use as reducing agents in organic synthesis. The most important borohydrides are lithium borohydride and sodium borohydride, but...

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Lithium hydride

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soluble and nonreactive with certain molten salts such as lithium fluoride, lithium borohydride, and sodium hydride. With a molar mass of 7.95 g/mol, it...

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Sodium borohydride

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Sodium borohydride, also known as sodium tetrahydridoborate and sodium tetrahydroborate, is an inorganic compound with the formula NaBH4 (sometimes written...

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Lithium triethylborohydride

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stronger reducing agent than lithium borohydride and lithium aluminium hydride. LiBHEt3 is prepared by the reaction of lithium hydride (LiH) and triethylborane...

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Lithium aluminium hydride

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Commons has media related to lithium aluminium hydride. Hydride Sodium borohydride Sodium hydride Sigma-Aldrich Co., Lithium aluminium hydride. Retrieved...

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Diborane

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passivating lithium tetrafluoroborate layer on the reactant. Alternatively, a small amount of diborane product can be added to form lithium borohydride, which...

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Rechargeable lithium metal battery

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inorganic materials families have been studied, including LiPON, lithium borohydride, glassy, semi-crystalline, and crystalline sulfides, NASICON structured...

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Beryllium borohydride

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chloride and lithium borohydride in a sealed tube at 120 °C: BeCl2 + 2 Li[BH4] → Be[BH4]2 + 2 LiCl The chemical formula of beryllium borohydride can be written...

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Nitrile reduction

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for the non-catalytic conversion to amines include lithium aluminium hydride, lithium borohydride, diborane, or elemental sodium in alcohol solvents....

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Sodium cyanoborohydride

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Wittig was the first to synthesize a cyanoborohydride by treating lithium borohydride with hydrogen cyanide in 1951. The corresponding compound, sodium...

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Amide reduction

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effect this reaction include metal hydrides such as lithium aluminium hydride, or lithium borohydride in mixed solvents of tetrahydrofuran and methanol...

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Reduction of nitro compounds

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Iron metal Lithium aluminium hydride (Note: Hydroxylamines and oximes are typical impurities.) Lithium borohydride or sodium borohydride and trimethylsilyl...

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Germane

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sodium borohydride, potassium borohydride, lithium borohydride, lithium aluminium hydride, sodium aluminium hydride. The reaction with borohydrides is catalyzed...

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Uranium borohydride

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aluminium borohydride: UF4 + 2 Al(BH4)3 → U(BH4)4 + 2 Al(BH4)F2 It may also be prepared by the solid-state reaction of uranium tetrachloride with lithium borohydride:...

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Carbonyl reduction

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group, nitrile, ester). In their handling properties, lithium aluminium hydride and sodium borohydride (and their derivatives) strongly differ. NaBH4 is far...

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List of inorganic compounds

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Plumbane – PbH4 Lithium tetrachloroaluminate – LiAlCl4 Lithium aluminium hydride – LiAlH4 Lithium bromide – LiBr Lithium borohydride – LiBH4 Lithium carbonate...

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Boron triiodide

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Another method is by reacting lithium borohydride with iodine. As well as boron triiodide, this reaction also produces lithium iodide, hydrogen and hydrogen...

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List of CAS numbers by chemical compound

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LiAlH4 lithium tetrahydridoaluminate 16853–85–3 LiAlO2 lithium aluminate 12003–67–7 LiBF4 lithium tetrafluoroborate 14283–07–9 LiBH4 lithium borohydride 16949–15–8...

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Boroxine

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lithium borohydride (LiBH4) as a catalyst (or reaction of borane–tetrahydrofuran or borane–(dimethyl sulfide) in the presence of sodium borohydride):...

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Glossary of chemical formulae

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hemihydrate LiAlH4 lithium aluminium hydride Li(AlSi2O6) keatite LiBH4 lithium borohydride LiBr lithium bromide 7550-35-8 LiBr·2H2O lithium bromide dihydrate...

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Organic redox reaction

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often effected using stoichiometric hydride reagents such as sodium borohydride or lithium aluminium hydride. Oxidizing agent Reducing agent Transfer hydrogenation...

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Complex metal hydride

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including sodium aluminium hydride, NaAlH4 ), lithium aluminium hydride, LiAlH4, and lithium borohydride, (LiBH4). Complex metal hydrides are often soluble...

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Protonolysis

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Compounds susceptible to hydrolysis often undergo protonolysis. The borohydride anion is susceptible to reaction with even weak acids, resulting protonolysis...

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Dihydroartemisinin

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mild hydride-reducing agents, such as sodium borohydride, potassium borohydride, and lithium borohydride to dihydroartemisinin (a lactol) in over 90%...

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Reducing agent

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amalgam (Zn(Hg)) (reagent for Clemmensen reduction) Diborane Sodium borohydride (Na BH4) Ferrous compounds that contain the Fe2+ ion, such as iron(II)...

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