return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Experimental > One molecule all properties

Experimental data for C7H7+ (cycloheptatrienyl cation)

22 02 02 11 45
Other names
tropyl radical; tropyl; 2,4,6-Cycloheptatrienylium;
INChI INChIKey SMILES IUPAC name
InChI=1S/C7H7/c1-2-4-6-7-5-3-1/h1-7H WIQYRPSOJMHAHR-UHFFFAOYSA-N C1=CC=CC=C[CH]1 2,4,6-Cycloheptatrienylium
State Conformation
2A2 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
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

Calculated vibrational frequencies for C7H7+ (cycloheptatrienyl cation).
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 C7H7+ (cycloheptatrienyl cation).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of cycloheptatrienyl cation

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 C7H7+ (cycloheptatrienyl cation).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
C-C 4
C=C 3
H-C 7

Connectivity
Atom 1 Atom 2
C1 C2
C1 C7
C1 H8
C2 C3
C2 H9
C3 C4
C3 H10
C4 C5
C4 H11
C5 C6
C5 H12
C6 C7
C6 H13
C7 H14
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 2   2A2

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
6.280 0.020     webbook

Electron Affinity (eV)
Electron Affinity unc. reference
0.390 0.043 2002Rie/Tsc:231
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 2A2 C2v True           C2v 1 2
1 2 2A" Cs False           Cs 2 3
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 C7H7+ (cycloheptatrienyl cation).
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 2A2 C2v True       C2v 1 2
1 2 2A" Cs False       Cs 2 3

Calculated electric quadrupole moments for C7H7+ (cycloheptatrienyl cation).

References
By selecting the following links, you may be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].
squib reference DOI
2002Rie/Tsc:231 JC Rienstra-Kiracofe, GS Tschumper, HF Schaefer III, S Nandi, GB Ellison "Atomic and Molecular Electron Affinities: Photoelectron Experiments and Theoretical Computations" Chemical Reviews 2002, 102, 231-282 10.1021/cr990044u
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

Got a better number? Please email us at [email protected]


Browse
PreviousNext