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

using model chemistry: B2PLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D5H 2E1"
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-193.231765
Energy at 298.15K 
HF Energy-193.029594
Nuclear repulsion energy148.744468
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 B2PLYP/6-31G*
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 3290 3123 0.00      
2 A1 3267 3101 21.64      
3 A1 3252 3087 5.54      
4 A1 1530 1452 14.44      
5 A1 1424 1352 27.02      
6 A1 1167 1108 0.17      
7 A1 1082 1027 0.30      
8 A1 974 924 0.21      
9 A1 850 807 0.51      
10 A2 886 841 0.00      
11 A2 721 684 0.00      
12 A2 519 492 0.00      
13 B1 879 834 4.03      
14 B1 812 771 4.16      
15 B1 694 659 81.27      
16 B1 500 475 11.80      
17 B2 3283 3116 11.91      
18 B2 3255 3090 1.67      
19 B2 1586 1506 0.20      
20 B2 1324 1256 0.03      
21 B2 1238 1175 0.08      
22 B2 1106 1050 13.26      
23 B2 935 888 3.84      
24 B2 433i 411i 2.06      

Unscaled Zero Point Vibrational Energy (zpe) 17069.6 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 16202.5 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 B2PLYP/6-31G*
ABC
0.31002 0.28399 0.14822

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.187
C2 0.000 1.169 0.353
C3 0.000 0.741 -0.947
C4 0.000 -0.741 -0.947
C5 0.000 -1.169 0.353
H6 0.000 0.000 2.271
H7 0.000 2.193 0.702
H8 0.000 1.358 -1.837
H9 0.000 -1.358 -1.837
H10 0.000 -2.193 0.702

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10
C11.43612.25962.25961.43611.08392.24593.31553.31552.2459
C21.43611.36892.31082.33792.24631.08182.19873.34403.3798
C32.25961.36891.48252.31083.30282.19721.08282.27993.3659
C42.25962.31081.48251.36893.30283.36592.27991.08282.1972
C51.43612.33792.31081.36892.24633.37983.34402.19871.0818
H61.08392.24633.30283.30282.24632.69644.32734.32732.6964
H72.24591.08182.19723.36593.37982.69642.67354.36534.3856
H83.31552.19871.08282.27993.34404.32732.67352.71524.3653
H93.31553.34402.27991.08282.19874.32734.36532.71522.6735
H102.24593.37983.36592.19721.08182.69644.38564.36532.6735

picture of cyclopentadienyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 107.309 C1 C2 H7 125.661
C1 C5 C4 107.309 C1 C5 H10 125.661
C2 C1 C5 108.971 C2 C1 H6 125.514
C2 C3 C4 108.206 C2 C3 H8 127.096
C3 C2 H7 127.030 C3 C4 C5 108.206
C3 C4 H9 124.698 C4 C3 H8 124.698
C4 C5 H10 127.030 C5 C1 H6 125.514
C5 C4 H9 127.096
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.134      
2 C -0.189      
3 C -0.152      
4 C -0.152      
5 C -0.189      
6 H 0.169      
7 H 0.158      
8 H 0.165      
9 H 0.165      
10 H 0.158      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.673 0.000 0.000
y 0.000 7.786 0.000
z 0.000 0.000 8.663


<r2> (average value of r2) Å2
<r2> 87.607
(<r2>)1/2 9.360