The Electronic Structure of Graphene Nanoislands: A CAS-SCF and NEVPT2 Study

Table 4

Energies for the different hexagonal nanoislands in hartree.

Nanoisland	State	STO-3G		Roos-basis set
		RHF	MP2	RHF
H_2
H_3
H_4			-	-
H_5			-	-
H_6			-	-