Perylene Index

General properties

Symmetry point group D2h
Symmetry elements E     C2(z)     C2(y)     C2(x)     i     &sigmah(xy)     &sigmah(xz)     &sigmah(yz)
Irriducible representation &Gamma3N 16 Ag + 16 B1g + 9 B2g + 7 B3g + 7 Au + 9 B1u + 16 B2u + 16 B3u
Irriducible representation &Gammavib 16 Ag + 15 B1g + 8 B2g + 6 B3g + 7 Au + 8 B1u + 15 B2u + 15 B3u
Infrared active modes 8 B1u + 15 B2u + 15 B3u
Single ionization energy (eV)
Adiab. = 6.57 Vert. = 6.64 (Exp. 6.960 ± 0.001)
Double ionization energy (eV)
Singlet: Adiab. = 17.19 Vert. = 17.46 (Exp. 18.0 ± 0.2)
Triplet: Adiab. = 18.60 Vert. = 18.73
Electron affinity (eV)
Adiab. = 0.96 Vert. = 0.87 (Exp. 0.973 ± 0.005)
Zero Point Energies (kcal/mol)
Anion = 159 Neutral = 162 Cation = 162 Dication S = 162
Static dipole polarizabilities (Å3)
Anion: &alphaxx = 67 &alphayy = 51 &alphazz = 19
Neutral: &alphaxx = 56 &alphayy = 44 &alphazz = 16
Cation: &alphaxx = 60 &alphayy = 43 &alphazz = 15
Dication S: &alphaxx = 57 &alphayy = 43 &alphazz = 14
Rotational constants(cm-1)
Anion: A = 2.052e-02 B = 1.102e-02 C = 7.171e-03
Neutral: A = 2.076e-02 B = 1.099e-02 C = 7.186e-03
Cation: A = 2.065e-02 B = 1.109e-02 C = 7.216e-03
Dication S: A = 2.050e-02 B = 1.115e-02 C = 7.221e-03
Dication T: A = 2.022e-02 B = 1.118e-02 C = 7.199e-03
van der Waals coefficients (a.u.)#
Average static polarizability &alpha(0) = 262
Effective frequency &omega1 = 0.361
Homomolecular Hamaker constant (x10-3) C6 = 18.6
Coefficient of the retardated vdW interaction (x10-6) KAA = 2.74

#The full set of C6perylene, PAH for all PAHs in the database can be found here


Perylene Index