Circumbiphenyl 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 27 Ag + 27 B1g + 15 B2g + 12 B3g + 12 Au + 15 B1u + 27 B2u + 27 B3u
Irreducible representation &Gammavib 27 Ag + 26 B1g + 14 B2g + 11 B3g + 12 Au + 14 B1u + 26 B2u + 26 B3u
Infrared active modes 14 B1u + 26 B2u + 26 B3u
Single ionization energy (eV)
Adiab. = 6.46 Vert. = 6.52 (Exp. 6.81 ± 0.02))
Double ionization energy (eV)
Singlet: Adiab. = 16.04 Vert. = 16.26 (Exp. —)
Triplet: Adiab. = 16.16 Vert. = 16.21
Electron affinity (eV)
Adiab. = 1.03 Vert. = 0.96 (Exp. —)
Zero Point Energies (kcal/mol)
Anion = 259 Neutral = 262 Cation = 262 Dication S = 262
Static dipole polarizabilities (Å3)
Anion: &alphaxx = 157 &alphayy = 101 &alphazz = 30
Neutral: &alphaxx = 124 &alphayy = 90 &alphazz = 27
Cation: &alphaxx = 138 &alphayy = 93 &alphazz = 26
Dication S: &alphaxx = 142 &alphayy = 96 &alphazz = 25
Rotational constants(cm-1)
Anion: A = 6.435e-03 B = 2.957e-03 C = 2.026e-03
Neutral: A = 6.433e-03 B = 2.980e-03 C = 2.037e-03
Cation: A = 6.468e-03 B = 2.968e-03 C = 2.034e-03
Dication S: A = 6.496e-03 B = 2.952e-03 C = 2.030e-03
Dication T: A = 6.430e-03 B = 2.983e-03 C = 2.038e-03
van der Waals coefficients (a.u.)#
Average static polarizability &alpha(0) = 538
Effective frequency &omega1 = 0.321
Homomolecular Hamaker constant (x10-3) C6 = 69.8
Coefficient of the retardated vdW interaction (x10-6) KAA = 11.6

#The full set of C6circumbiphenyl, PAH for all PAHs in the database can be found here


Circumbiphenyl Index