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Sodium hydride is the chemical compound with the empirical formula Na H. This alkali metal hydride is primarily used as a strong yet combustible base in organic synthesis . NaH is a saline (salt-like) hydride , composed of Na + and H − ions, in contrast to molecular hydrides such as borane , silane , germane , ammonia , and methane .
The hydride adds to an electrophilic center, typically unsaturated carbon. Hydrides such as sodium hydride and potassium hydride are used as strong bases in organic synthesis. The hydride reacts with the weak Bronsted acid releasing H 2. Hydrides such as calcium hydride are used as desiccants, i.e. drying agents, to remove trace water from ...
The alkylphosphonium salt is deprotonated with a strong base such as n-butyllithium: [Ph 3 P + CH 2 R]X − + C 4 H 9 Li → Ph 3 P=CHR + LiX + C 4 H 10. Besides n-butyllithium (n BuLi), other strong bases like sodium and potassium t-butoxide (t BuONa, t BuOK), lithium, sodium and potassium hexamethyldisilazide (LiHMDS, NaHMDS, KHDMS, where HDMS = N(SiMe 3) 2), or sodium hydride (NaH) are also ...
Sodium formate – HCOONa; Sodium hydride – NaH; Sodium hydrogen carbonate (Sodium bicarbonate) – NaHCO 3; Sodium hydrosulfide – NaSH; Sodium hydroxide – NaOH; Sodium hypobromite – NaOBr; Sodium hypochlorite – NaOCl; Sodium hypoiodite – NaOI; Sodium hypophosphite – NaPO 2 H 2; Sodium iodate – NaIO 3; Sodium iodide – NaI ...
Common reducing agents include metals potassium, calcium, barium, sodium and magnesium, and also compounds that contain the hydride H − ion, those being NaH, LiH, [5] LiAlH 4 and CaH 2. Some elements and compounds can be both reducing or oxidizing agents.
Binary hydrogen compounds in group 1 are the ionic hydrides (also called saline hydrides) wherein hydrogen is bound electrostatically. Because hydrogen is located somewhat centrally in an electronegative sense, it is necessary for the counterion to be exceptionally electropositive for the hydride to possibly be accurately described as truly behaving ionic.
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In the Brown-Schlesinger process sodium borohydride is industrially prepared from sodium hydride (produced by reacting Na and H 2) and trimethyl borate at 250–270 °C: B(OCH 3) 3 + 4 NaH → NaBH 4 + 3 NaOCH 3. Millions of kilograms are produced annually, far exceeding the production levels of any other hydride reducing agent. [15]