Difference between revisions of "Sodium hydride"
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| CASNo_Ref = {{cascite}} | | CASNo_Ref = {{cascite}} | ||
| EINECS = 231-587-3 | | 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 | | Section2 = {{Chembox Properties | ||
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}} | }} | ||
| Section3 = {{Chembox Structure | | Section3 = {{Chembox Structure | ||
− | | Reference = <ref>{{ | + | | Reference = <ref>{{Wells5th}}.</ref> |
| CrystalStruct = [[Halite structure|Halite (NaCl)]], [[Pearson symbol|cF8]] | | CrystalStruct = [[Halite structure|Halite (NaCl)]], [[Pearson symbol|cF8]] | ||
| SpaceGroup = Fm{{overline|3}}m, No. 225 | | SpaceGroup = Fm{{overline|3}}m, No. 225 | ||
− | | Coordination = Octahedral (Na<sup>+</sup>)<br/>Octahedral ( | + | | Coordination = Octahedral (Na<sup>+</sup>)<br/>Octahedral (H<sup>–</sup>) |
− | | LattConst_a = | + | | 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 | | Section7 = {{Chembox Hazards | ||
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}} | }} | ||
| Section8 = {{Chembox Related | | Section8 = {{Chembox Related | ||
− | | OtherCations = [[Lithium hydride]]<br/>[[Potassium hydride]] | + | | OtherCations = [[Lithium hydride]]<br/>[[Potassium hydride]]<br/>[[Rubidium hydride]]<br/>[[Caesium hydride]] |
− | | OtherCpds = [[Sodium borohydride]] | + | | 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]] in [[organic synthesis]]. | + | '''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== | ||
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==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 12:38, 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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