Sodium phenolate

Sodium phenoxide
Names

Other names Sodium phenolate
Identifiers
CAS Number	139-02-6
3D model (JSmol)	Interactive image
ChemSpider	8420
ECHA InfoCard	100.004.862
PubChem CID	4445035
InChI InChI=1S/C6H6O.Na/c7-6-4-2-1-3-5-6;/h1-5,7H;/q;+1/p-1 Key: NESLWCLHZZISNB-UHFFFAOYSA-M InChI=1/C6H6O.Na/c7-6-4-2-1-3-5-6;/h1-5,7H;/q;+1/p-1 Key: NESLWCLHZZISNB-REWHXWOFAP
SMILES c1ccc(cc1)[O-].[Na+]
Properties
Chemical formula	C₆H₅NaO
Molar mass	116.09 g/mol
Appearance	White solid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Sodium phenoxide is an organic compound with the formula NaOC₆H₅. This white solid is the conjugate base of phenol. It is used as a precursor to many other organic compounds, such as aryl ethers.

Most commonly, solutions of sodium phenoxide are produced by treating phenol with sodium hydroxide. Anhydrous derivatives can be prepared from phenol and sodium:

Like other sodium alkoxides, crystalline sodium phenolate adopts a complex structure involving multiple Na-O bonds. Solvent-free material is polymeric, each Na center being bound to three oxygen ligands as well as the phenyl ring. Adducts of sodium phenoxide are molecular, such as the cubane [NaOPh]₄(HMPA)₄.

Sodium phenoxide is produced by the "alkaline fusion" of benzenesulfonic acid, whereby the sulfonate groups are displaced by hydroxide:

This route once was the principal industrial route to phenol.

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