Difference between revisions of "Sodium hydride"
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| − | '''Sodium hydride''', NaH, is an [[Ionic compound|ionic]] (or "saline") [[hydride]]. It is used as a strong [[reducing agent]] in [[organic synthesis]]. | + | {{chembox |
| + | | Name = Sodium hydride | ||
| + | | Section1 = {{Chembox Identifiers | ||
| + | | CASNo = 7646-69-7 | ||
| + | | CASNo_Ref = {{cascite}} | ||
| + | | EINECS = 231-587-3 | ||
| + | | ChemSpiderID = 23144 | ||
| + | | InChI=1/Na.H/q+1;-1 | ||
| + | | InChIKey = BZKBCQXYZZXSCO-UHFFFAOYAY | ||
| + | | StdInChI = 1S/Na.H | ||
| + | | StdInChIKey = MPMYQQHEHYDOCL-UHFFFAOYSA-N | ||
| + | }} | ||
| + | | Section2 = {{Chembox Properties | ||
| + | | Reference = <ref>{{RubberBible62nd|page=B-148}}.</ref> | ||
| + | | Formula = NaH | ||
| + | | MolarMass = 23.998 g mol<sup>–1</sup> | ||
| + | | Appearance = white to grey solid | ||
| + | | Density = 0.92 g cm<sup>–1</sup> | ||
| + | | Solubility = reacts | ||
| + | | MeltingPt = 800 °C ''decomp.'' | ||
| + | | RefractIndex = 1.470 | ||
| + | }} | ||
| + | | Section3 = {{Chembox Structure | ||
| + | | Reference = <ref>{{Wells5th}}.</ref> | ||
| + | | CrystalStruct = [[Halite structure|Halite (NaCl)]], [[Pearson symbol|cF8]] | ||
| + | | SpaceGroup = Fm{{overline|3}}m, No. 225 | ||
| + | | Coordination = Octahedral (Na<sup>+</sup>)<br/>Octahedral (H<sup>–</sup>) | ||
| + | | LattConst_a = 496 pm | ||
| + | }} | ||
| + | | Section4 = {{Chembox Thermochemistry | ||
| + | | Reference = <ref name="NIST">{{NIST chemistry|id=1S/Na.H|name=Sodium hydride|accessdate=2010-06-20}}.</ref> | ||
| + | | DeltaHf = –56.44 kJ mol<sup>–1</sup> | ||
| + | | Entropy = 40.03 J K<sup>–1</sup> mol<sup>–1</sup> | ||
| + | }} | ||
| + | | Section7 = {{Chembox Hazards | ||
| + | | Reference = <ref>{{CLP Regulation|index=001-002-00-4|page=340}}</ref> | ||
| + | | EUIndex = 001-003-00-X | ||
| + | | GHSPictograms = {{GHS02|Water-react. 1}} | ||
| + | | GHSSignalWord = DANGER | ||
| + | | HPhrases = {{H-phrases|260}} | ||
| + | }} | ||
| + | | Section8 = {{Chembox Related | ||
| + | | OtherCations = [[Lithium hydride]]<br/>[[Potassium hydride]]<br/>[[Rubidium hydride]]<br/>[[Caesium hydride]] | ||
| + | | OtherCpds = [[Lithium aluminium hydride]]<br/>[[Sodium borohydride]] | ||
| + | }} | ||
| + | }} | ||
| + | '''Sodium hydride''', NaH, is an [[Ionic compound|ionic]] (or "saline") [[hydride]]. It is used as a strong [[reducing agent]] and/or a [[strong base]] in [[organic synthesis]]. | ||
==References== | ==References== | ||
| Line 6: | Line 52: | ||
==External links== | ==External links== | ||
{{wikipedia|Sodium hydride}} | {{wikipedia|Sodium hydride}} | ||
| + | *{{OrgSynth preps|id=36882|name=sodium hydride}} | ||
[[Category:Sodium compounds]] | [[Category:Sodium compounds]] | ||
| − | [[Category: | + | [[Category:Metal hydrides]] |
[[Category:Reagents for organic chemistry]] | [[Category:Reagents for organic chemistry]] | ||
| + | [[Category:Drying agents]] | ||
{{CC-BY-3.0}} | {{CC-BY-3.0}} | ||
Latest revision as of 11:38, 20 June 2010
| Sodium hydride | |
|---|---|
| Identifiers | |
| InChI | InChI=1/Na.H/q+1;-1 |
| InChIKey | BZKBCQXYZZXSCO-UHFFFAOYAY |
| Standard InChI | InChI=1S/Na.H |
| Standard InChIKey | MPMYQQHEHYDOCL-UHFFFAOYSA-N |
| CAS number | [] |
| EC number | |
| ChemSpider | |
| Properties[1] | |
| Chemical formula | NaH |
| Molar mass | 23.998 g mol–1 |
| Appearance | white to grey solid |
| Density | 0.92 g cm–1 |
| Melting point |
800 °C decomp. |
| Solubility in water | reacts |
| Refractive index (nD) | 1.470 |
| Structure[2] | |
| Crystal structure | Halite (NaCl), cF8 |
| Space group | Fm3m, No. 225 |
| Lattice constant | a = 496 pm |
| Coordination geometry | Octahedral (Na+) Octahedral (H–) |
| Thermochemistry[3] | |
| Std enthalpy of formation ΔfH |
–56.44 kJ mol–1 |
| Standard molar entropy S |
40.03 J K–1 mol–1 |
| Hazards[4] | |
| EU index number | 001-003-00-X |
| GHS pictograms | 
|
| GHS signal word | DANGER |
| GHS hazard statements | H260 |
| Related compounds | |
| Other cations | Lithium hydride Potassium hydride Rubidium hydride Caesium hydride |
| Other compounds | Lithium aluminium hydride Sodium borohydride |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Sodium hydride, NaH, is an ionic (or "saline") hydride. It is used as a strong reducing agent and/or a strong base in organic synthesis.
References
- ↑ CRC Handbook of Chemistry and Physics, 62nd ed.; Weast, Robert C., Ed.; CRC Press: Boca Raton, FL, 1981; p B-148. ISBN 0-8493-0462-8.
- ↑ Wells, A. F. Structural Inorganic Chemistry, 5th ed.; Clarendon Press: Oxford, 1984. ISBN 0-19-855370-6.
- ↑ Sodium hydride. In NIST Chemistry WebBook; National Institute for Standards and Technology, <http://webbook.nist.gov/cgi/inchi/InChI%3D1S/Na.H>. (accessed 20 June 2010).
- ↑ Index no. 001-002-00-4 of Annex VI, Part 3, to Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 on classification, labelling and packaging of substances and mixtures, amending and repealing Directives 67/548/EEC and 1999/45/EC, and amending Regulation (EC) No 1907/2006. OJEU L353, 31.12.2008, pp 1–1355 at p 340.
External links
 |
See also the corresponding article on Wikipedia. |
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