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Experimental data for C6H5- (phenyl anion)

22 02 02 11 45
Other names
phenyl;
INChI INChIKey SMILES IUPAC name
InChI=1S/C6H5/c1-2-4-6-5-3-1/h1-5H CIUQDSCDWFSTQR-UHFFFAOYSA-N [C]1=CC=CC=C1 phenyl
State Conformation
2A1 C2V
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Hfg(298.15K) enthalpy of formation   2.50 kJ mol-1 1996Dav/Bie:2590
Hfg(0K) enthalpy of formation 352.70 2.50 kJ mol-1 1996Dav/Bie:2590
Entropy (298.15K) entropy     J K-1 mol-1  
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity     kJ mol-1  
Heat Capacity (298.15K) heat capacity 79.21   J K-1 mol-1 TRC
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency Intensity Comment Description
Fundamental(cm-1) Harmonic(cm-1) Reference (km mol-1) unc. Reference
1 A1 3086   2001Lap/Spa:10502      
2 A1 3072   2001Lap/Spa:10502      
3 A1 3037   2001Lap/Spa:10502      
4 A1 1497   2001Lap/Spa:10502      
5 A1 1439   2001Lap/Spa:10502      
6 A1 1151   2001Lap/Spa:10502      
7 A1 1028   2001Lap/Spa:10502      
8 A1 998   2001Lap/Spa:10502      
9 A1 973   2001Lap/Spa:10502      
10 A1 605   2001Lap/Spa:10502      
11 A2 945   2001Lap/Spa:10502       tentative
12 A2 816   2001Lap/Spa:10502       tentative
13 A2            
14 B1 990   2001Lap/Spa:10502      
15 B1 873   2001Lap/Spa:10502      
16 B1 703   2001Lap/Spa:10502      
17 B1 655   2001Lap/Spa:10502      
18 B1 415   2001Lap/Spa:10502      
19 B2 3070   2001Lap/Spa:10502      
20 B2 3060   2001Lap/Spa:10502      
21 B2 1593   2001Lap/Spa:10502      
22 B2 1432   2001Lap/Spa:10502      
23 B2 1310   2001Lap/Spa:10502      
24 B2 1281   2001Lap/Spa:10502      
25 B2 1159   2001Lap/Spa:10502      
26 B2 1060   2001Lap/Spa:10502      
27 B2 588   2001Lap/Spa:10502      

vibrational zero-point energy: 18418.0 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for C6H5- (phenyl anion).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
       

Calculated rotational constants for C6H5- (phenyl anion).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of phenyl anion

Point Group C2v


Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4

Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for C6H5- (phenyl anion).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
C:C 6
H-C 5

Connectivity
Atom 1 Atom 2
C1 C2
C1 C3
C2 C4
C2 H7
C3 C5
C3 H8
C4 C6
C4 H9
C5 C6
C5 H10
C6 H11
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 2   2A1
13700 2 webbook

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
8.320 0.040 8.670 0.020 1996Dav/Bie:2590

Electron Affinity (eV)
Electron Affinity unc. reference
1.097 0.004 1996Dav/Bie:2590
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
State Config State description Conf description Exp. min. Dipole (Debye) Reference comment Point Group Components
x y z total dipole quadrupole
1 1 2A1 C2v True           C2v 1 2
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for C6H5- (phenyl anion).
Electric quadrupole moment quadrupole
State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole
1 1 2A1 C2v True       C2v 1 2

Calculated electric quadrupole moments for C6H5- (phenyl anion).

References
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squib reference DOI
1996Dav/Bie:2590 GE Davico, VM Bierbaum, CH DePuy, GB Ellison, RR Squires "The C-H Bond Energy of Benzene" JACS 1995, 117, 2590-2599 10.1021/ja00114a023
2001Lap/Spa:10502 A Lapinski, J Spanget-Larsen, M Laggard, J Waluk, JG Radziszewski "Raman spectrum of the phenyl radical" J. Phys. Chem. A 105(46) 10520-10524, 2001 10.1021/jp0114900
TRC Frenkel, M; Marsh, K.N.; Wilhoit, R.C.; Kabo, G.J.; Roganov, G.N.,Thermodynamics of Organic Compounds in the Gas State,Thermodynamics Research Center, College Station, TX, 1994  
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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