Benzo[a]pyrene Index

General properties

Symmetry point group Cs
Symmetry elements E     3 &sigmah(xy)
Irriducible representation &Gamma3N 64 A' + 32 A''
Irriducible representation &Gammavib 61 A' + 29 A''
Infrared active modes 61 A' + 29 A''
Single ionization energy (eV)
Adiab. = 6.71 Vert. = 6.78 (Exp. 7.12 ± 0.01)
Double ionization energy (eV)
Singlet: Adiab. = 17.46 Vert. = 17.73 (Exp. —)
Triplet: Adiab. = 18.18 Vert. = 18.30
Electron affinity (eV)
Adiab. = 0.77 Vert. = 0.67 (Exp. 0.815 ± 0.043)
Zero Point Energies (kcal/mol)
Anion = 159 Neutral = 162 Cation = 162 Dication S = 162
Static dipole polarizabilities (Å3)
Anion: &alphaxx = 82 &alphayy = 44 &alphazz = 19
Neutral: &alphaxx = 67 &alphayy = 39 &alphazz = 17
Cation: &alphaxx = 70 &alphayy = 38 &alphazz = 15
Dication S: &alphaxx = 70 &alphayy = 38 &alphazz = 14
Permanent dipole moment (Deb)
Anion: &mux = +0.38 &muy = +0.26 &muz = 0.00
Neutral: &mux = -0.01 &muy = -0.01 &muz = 0.00
Cation: &mux = -0.32 &muy = -0.33 &muz = 0.00
Dication S: &mux = -0.45 &muy = +0.01 &muz = 0.00
Dication T: &mux = -0.11 &muy = -1.23 &muz = 0.00
Rotational constants(cm-1)
Anion: A = 2.839e-02 B = 8.410e-03 C = 6.488e-03
Neutral: A = 2.830e-02 B = 8.530e-03 C = 6.554e-03
Cation: A = 2.852e-02 B = 8.497e-03 C = 6.547e-03
Dication S: A = 2.866e-02 B = 8.442e-03 C = 6.521e-03
Dication T: A = 2.804e-02 B = 8.550e-03 C = 6.552e-03
van der Waals coefficients (a.u.)#
Average static polarizability &alpha(0) = 277
Effective frequency &omega1 = 0.345
Homomolecular Hamaker constant (x10-3) C6 = 19.8
Coefficient of the retardated vdW interaction (x10-6) KAA = 3.06

#The full set of C6benzo[a]pyrene, PAH for all PAHs in the database can be found here


Benzo[a]pyrene Index