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All results from a given calculation for C5H5 (cyclopentadienyl radical)

using model chemistry: CCD/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C2V 2B1

Conformer 1 (D5H)

Jump to S1C2
Vibrational Frequencies calculated at CCD/6-31G**
Rotational Constants (cm-1) from geometry optimized at CCD/6-31G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at CCD/6-31G**
 hartrees
Energy at 0K-192.866686
Energy at 298.15K 
HF Energy-192.201370
Nuclear repulsion energy149.025129
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCD/6-31G**
Rotational Constants (cm-1) from geometry optimized at CCD/6-31G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.220
C2 0.000 1.121 0.395
C3 0.000 0.680 -1.005
C4 0.000 -0.680 -1.005
C5 0.000 -1.121 0.395
H6 0.000 0.000 2.297
H7 0.000 2.151 0.718
H8 0.000 1.335 -1.862
H9 0.000 -1.335 -1.862
H10 0.000 -2.151 0.718

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10
C11.39172.32692.32691.39171.07712.20883.35863.35862.2088
C21.39171.46772.28062.24102.20791.07992.26683.33473.2873
C32.32691.46771.35952.28063.37172.26571.07832.18903.3139
C42.32692.28061.35951.46773.37173.31392.18901.07832.2657
C51.39172.24102.28061.46772.20793.28733.33472.26681.0799
H61.07712.20793.37173.37172.20792.66844.36814.36812.6684
H72.20881.07992.26573.31393.28732.66842.70594.33644.3018
H83.35862.26681.07832.18903.33474.36812.70592.66924.3364
H93.35863.33472.18901.07832.26684.36814.33642.66922.7059
H102.20883.28733.31392.26571.07992.66844.30184.33642.7059

picture of cyclopentadienyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 108.900 C1 C2 H7 126.211
C1 C5 C4 108.900 C1 C5 H10 126.211
C2 C1 C5 107.249 C2 C1 H6 126.376
C2 C3 C4 107.476 C2 C3 H8 125.131
C3 C2 H7 124.890 C3 C4 C5 107.476
C3 C4 H9 127.393 C4 C3 H8 127.393
C4 C5 H10 124.890 C5 C1 H6 126.376
C5 C4 H9 125.131
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability