2,5-Dihydroxy-1,4-benzoquinone

2,5-Dihydroxy-1,4-benzoquinone

Names
IUPAC name 2,5-dihydroxycyclohexa-2,5-diene-1,4-dione
Other names 2,5-Dihydroxy-p-benzoquinone
Identifiers
ChemSpider	62426
Jmol interactive 3D	Image Image
PubChem	69213
InChI InChI=1S/C6H4O4/c7-3-1-4(8)6(10)2-5(3)9/h1-2,7,10H Key: QFSYADJLNBHAKO-UHFFFAOYSA-N InChI=1/C6H4O4/c7-3-1-4(8)6(10)2-5(3)9/h1-2,7,10H Key: QFSYADJLNBHAKO-UHFFFAOYAW
SMILES C1=C(C(=O)C=C(C1=O)O)O O=C\1C(\O)=C/C(=O)C(/O)=C/1
Properties
Chemical formula	C6H4O4
Molar mass	140.1 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

2,5-Dihydroxy-1,4-benzoquinone or 2,5-Dihydroxy-para-benzoquinone is an organic compound with formula C
6H
4O
4, formally derived from 1,4-Benzoquinone by replacing two hydrogen atoms with hydroxyl (OH) groups. It is one of seven dihydroxybenzoquinone isomers.

The IUPAC name is 2,5-hydroxycyclohexa-2,5-diene-1,4-dione.

Like many alcohols, it behaves like an acid: it can cede two protons (pK_al = 2.95, pK_a2 = 4.87) to form the anion C
6H
2O2−
4. ^[1]

See also

• Hydroxy-1,4-benzoquinone
• Tetrahydroxy-1,4-benzoquinone

References

1. Sahar I. Mostafa (), Complexes of 2,5-dihydroxy-1,4-benzoquinone and chloranilic acid with second and third row transition elements. Journal Transition Metal Chemistry, volume 24, number 3, pages 306-310. doi:10.1023/A:1006944124791.