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

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

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

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at CCD/6-31+G**
 hartrees
Energy at 0K-192.877515
Energy at 298.15K-192.882325
HF Energy-192.208185
Nuclear repulsion energy148.832641
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/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3333 3141 0.43      
2 A1 3323 3131 8.56      
3 A1 3296 3106 0.92      
4 A1 1626 1532 1.06      
5 A1 1518 1430 3.50      
6 A1 1181 1113 0.77      
7 A1 1123 1058 11.87      
8 A1 1067 1005 8.31      
9 A1 860 811 0.24      
10 A2 860 811 0.00      
11 A2 814 767 0.00      
12 A2 507 478 0.00      
13 B1 869 819 9.94      
14 B1 721 680 15.38      
15 B1 684 644 124.00      
16 B1 489 460 9.37      
17 B2 6938 6537 152903.50      
18 B2 3304 3113 78.42      
19 B2 3295 3104 26.24      
20 B2 1421 1339 67.04      
21 B2 1339 1262 0.18      
22 B2 1195 1126 8.52      
23 B2 976 920 2.52      
24 B2 873 823 17.06      

Unscaled Zero Point Vibrational Energy (zpe) 20805.0 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 19604.6 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCD/6-31+G**
ABC
0.31028 0.28423 0.14834

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.222
C2 0.000 1.123 0.395
C3 0.000 0.681 -1.006
C4 0.000 -0.681 -1.006
C5 0.000 -1.123 0.395
H6 0.000 0.000 2.299
H7 0.000 2.153 0.719
H8 0.000 1.336 -1.864
H9 0.000 -1.336 -1.864
H10 0.000 -2.153 0.719

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10
C11.39432.32952.32951.39431.07762.21113.36203.36202.2111
C21.39431.46872.28402.24542.21081.08012.26853.33823.2918
C32.32951.46871.36262.28403.37482.26741.07872.19163.3180
C42.32952.28401.36261.46873.37483.31802.19161.07872.2674
C51.39432.24542.28401.46872.21083.29183.33822.26851.0801
H61.07762.21083.37483.37482.21082.67094.37204.37202.6709
H72.21111.08012.26743.31803.29182.67092.70894.34054.3062
H83.36202.26851.07872.19163.33824.37202.70892.67104.3405
H93.36203.33822.19161.07872.26854.37204.34052.67102.7089
H102.21113.29183.31802.26741.08012.67094.30624.34052.7089

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 108.880 C1 C2 H7 126.174
C1 C5 C4 108.880 C1 C5 H10 126.174
C2 C1 C5 107.258 C2 C1 H6 126.371
C2 C3 C4 107.491 C2 C3 H8 125.175
C3 C2 H7 124.946 C3 C4 C5 107.491
C3 C4 H9 127.334 C4 C3 H8 127.334
C4 C5 H10 124.946 C5 C1 H6 126.371
C5 C4 H9 125.175
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability