Circumovalene 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 43 Ag + 43 B1g + 20 B2g + 23 B3g + 20 Au + 23 B1u + 43 B2u + 43 B3u
Irriducible representation &Gammavib 43 Ag + 42 B1g + 19 B2g + 22 B3g + 20 Au + 22 B1u + 42 B2u + 42 B3u
Infrared active modes 22 B1u + 42 B2u + 42 B3u
Single ionization energy (eV)
Adiab. = 5.71 Vert. = 5.74 (Exp. —)
Double ionization energy (eV)
Singlet: Adiab. = 14.02 Vert. = 14.12 (Exp. —)
Triplet: Adiab. = 14.37 Vert. = 14.42
Electron affinity (eV)
Adiab. = 1.92 Vert. = 1.89 (Exp. —)
Zero Point Energies (kcal/mol)
Anion = 400 Neutral = 402 Cation = 402 Dication S = 403
Static dipole polarizabilities (Å3)
Anion: &alphaxx = 256 &alphayy = 223 &alphazz = 44
Neutral: &alphaxx = 239 &alphayy = 205 &alphazz = 44
Cation: &alphaxx = 250 &alphayy = 217 &alphazz = 41
Dication S: &alphaxx = 258 &alphayy = 220 &alphazz = 40
Rotational constants(cm-1)
Anion: A = 1.736e-03 B = 1.244e-03 C = 7.248e-04
Neutral: A = 1.736e-03 B = 1.249e-03 C = 7.265e-04
Cation: A = 1.741e-03 B = 1.248e-03 C = 7.269e-04
Dication S: A = 1.744e-03 B = 1.247e-03 C = 7.272e-04
Dication T: A = 1.736e-03 B = 1.252e-03 C = 7.274e-04
van der Waals coefficients (a.u.)#
Average static polarizability &alpha(0) = 1099
Effective frequency &omega1 = 0.260
Homomolecular Hamaker constant (x10-3) C6 = 236
Coefficient of the retardated vdW interaction (x10-6) KAA = 48.2

#The full set of C6circumovalene, PAH for all PAHs in the database can be found here


Circumovalene Index