Hexabenzocoronene

Hexabenzocoronene
	; AFM image of hexabenzocoronene
Names
	Preferred IUPAC name Hexabenzo[bc,ef,hi,kl,no,qr]coronene
	Other names Hexa-peri-hexabenzocoronene; Hexabenzocoronene;
Identifiers
CAS Number	190-24-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	119779;
PubChem CID	136001;
UNII	8TZ95D8GP4 ;
CompTox Dashboard (EPA)	DTXSID30172446 ;
	InChI InChI=1S/C42H20/c1-7-19-21-9-2-11-23-25-13-4-15-27-29-17-6-18-30-28-16-5-14-26-24-12-3-10-22-20(8-1)31(19)37-38(32(21)23)40(34(25)27)42(36(29)30)41(35(26)28)39(37)33(22)24/h1-17,35H,18H2 Key: FYXBXZBCUROVBE-UHFFFAOYSA-N;
	SMILES c0cc1c2c3c4c5c1cccc5c6cccc1c6c4c7c8c1cccc8c9cccc1c9c7c3c5c1cccc5c2c0;
Properties
Chemical formula	C42H18
Molar mass	522.606 g·mol−1
Appearance	dark yellow
Density	1.54 g/cm3 (calc.)
Magnetic susceptibility (χ)	-346.0·10−6 cm3/mol
Structure
Space group	monoclinic, P21/a
Lattice constant	a = 1.8431(3) nm, b = 0.5119(1) nm, c = 1.2929(2) nm α = 90°, β = 112.57(1)°, γ = 90°
Formula units (Z)	2
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Hexa-peri-hexabenzocoronene (HBC) is a polycyclic aromatic hydrocarbon with the molecular formula C₄₂H₁₈. It consists of a central coronene molecule, with an additional benzene ring fused between each adjacent pair of rings around the periphery. It is sometimes simply called hexabenzocoronene, however, there are other chemicals that share this less-specific name, such as hexa-cata-hexabenzocoronene.

Hexa-peri-hexabenzocoronene has been imaged by atomic force microscopy (AFM) providing the first example of a molecule in which differences in bond order and bond lengths of the individual bonds can be distinguished by a measurement in direct space.

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