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

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

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at CID/6-31G*
 hartrees
Energy at 0K-192.731612
Energy at 298.15K-192.736552
HF Energy-192.192419
Nuclear repulsion energy149.445137
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 CID/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3373 3115 0.14      
2 A1 3362 3106 11.40      
3 A1 3335 3080 1.17      
4 A1 1698 1568 0.07      
5 A1 1555 1436 1.03      
6 A1 1209 1117 0.00      
7 A1 1147 1059 10.73      
8 A1 1091 1008 5.58      
9 A1 881 813 0.29      
10 A2 937 865 0.00      
11 A2 842 778 0.00      
12 A2 546 504 0.00      
13 B1 906 837 9.12      
14 B1 759 701 0.35      
15 B1 720 665 102.61      
16 B1 517 477 9.94      
17 B2 8703 8039 325396.10      
18 B2 3342 3087 85.52      
19 B2 3334 3079 36.95      
20 B2 1459 1347 69.51      
21 B2 1370 1265 0.27      
22 B2 1222 1129 15.53      
23 B2 1005 928 0.04      
24 B2 894 826 22.07      

Unscaled Zero Point Vibrational Energy (zpe) 22102.1 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 20415.7 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 CID/6-31G*
ABC
0.31349 0.28616 0.14960

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.218
C2 0.000 1.118 0.393
C3 0.000 0.674 -1.002
C4 0.000 -0.674 -1.002
C5 0.000 -1.118 0.393
H6 0.000 0.000 2.295
H7 0.000 2.149 0.714
H8 0.000 1.328 -1.859
H9 0.000 -1.328 -1.859
H10 0.000 -2.149 0.714

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10
C11.38952.32022.32021.38951.07672.20693.35143.35142.2069
C21.38951.46402.27132.23622.20601.07922.26183.32503.2823
C32.32021.46401.34842.27133.36502.26221.07792.17803.3033
C42.32022.27131.34841.46403.36503.30332.17801.07792.2622
C51.38952.23622.27131.46402.20603.28233.32502.26181.0792
H61.07672.20603.36503.36502.20602.66764.36094.36092.6676
H72.20691.07922.26223.30333.28232.66762.70034.32504.2971
H83.35142.26181.07792.17803.32504.36092.70032.65634.3250
H93.35143.32502.17801.07792.26184.36094.32502.65632.7003
H102.20693.28233.30332.26221.07922.66764.29714.32502.7003

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 108.771 C1 C2 H7 126.296
C1 C5 C4 108.771 C1 C5 H10 126.296
C2 C1 C5 107.159 C2 C1 H6 126.421
C2 C3 C4 107.649 C2 C3 H8 125.002
C3 C2 H7 124.933 C3 C4 C5 107.649
C3 C4 H9 127.348 C4 C3 H8 127.348
C4 C5 H10 124.933 C5 C1 H6 126.421
C5 C4 H9 125.002
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability