Hexaiodobenzene

Hexaiodobenzene

Names
IUPAC name Hexaiodobenzene
Other names Periodobenzene
Identifiers
CAS Number	608-74-2
3D model (JSmol)	Interactive image
ChemSpider	11360
ECHA InfoCard	100.009.246
PubChem CID	11853
InChI InChI=1S/C6I6/c7-1-2(8)4(10)6(12)5(11)3(1)9 Key: QNMKKFHJKJJOMZ-UHFFFAOYSA-N InChI=1/C6I6/c7-1-2(8)4(10)6(12)5(11)3(1)9 Key: QNMKKFHJKJJOMZ-UHFFFAOYAO
SMILES C1(=C(C(=C(C(=C1I)I)I)I)I)I
Properties
Chemical formula	C6I6
Molar mass	833.49 g·mol−1
Appearance	orange crystals
Density	4.60 g/cm3
Melting point	430 °C (806 °F; 703 K)
Solubility in water	insoluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Hexaiodobenzene is a chemical compound with the formula C₆I₆. Structurally, it is a derivative of benzene, in which all hydrogen atoms are replaced by iodine atoms. It forms orange crystals that are poorly soluble in all solvents.

The compound was first prepared by iodination of benzoic acid in the presence of hot fuming sulfuric acid. It adopts the expected structure with a central C6 ring.