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All results from a given calculation for C5H6 (1,3-Cyclopentadiene)

using model chemistry: HF/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/STO-3G
 hartrees
Energy at 0K-190.457108
Energy at 298.15K-190.463556
HF Energy-190.457108
Nuclear repulsion energy156.858537
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 HF/STO-3G
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 3772 3080 0.27      
2 A1 3734 3049 26.38      
3 A1 3584 2927 0.28      
4 A1 1925 1572 2.44      
5 A1 1776 1450 0.43      
6 A1 1652 1349 7.68      
7 A1 1310 1069 0.52      
8 A1 1157 945 0.92      
9 A1 1081 883 1.31      
10 A1 917 749 0.18      
11 A2 1352 1104 0.00      
12 A2 1157 945 0.00      
13 A2 898 733 0.00      
14 A2 603 492 0.00      
15 B1 3690 3013 0.02      
16 B1 1177 961 0.04      
17 B1 1125 918 2.72      
18 B1 812 663 24.12      
19 B1 402 328 4.63      
20 B2 3763 3072 1.48      
21 B2 3723 3040 13.37      
22 B2 2009 1640 2.31      
23 B2 1587 1296 1.53      
24 B2 1510 1233 1.44      
25 B2 1294 1056 0.37      
26 B2 1147 937 2.45      
27 B2 926 756 3.78      

Unscaled Zero Point Vibrational Energy (zpe) 24040.1 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 19628.8 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 HF/STO-3G
ABC
0.28455 0.27290 0.14299

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.879 0.000 1.873
H2 -0.879 0.000 1.873
H3 0.000 2.207 0.603
H4 0.000 -2.207 0.603
H5 0.000 1.344 -1.879
H6 0.000 -1.344 -1.879
C7 0.000 1.180 0.266
C8 0.000 -1.180 0.266
C9 0.000 0.000 1.227
C10 0.000 0.745 -0.979
C11 0.000 -0.745 -0.979

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.75902.69392.69394.08194.08192.17962.17961.09133.07663.0766
H21.75902.69392.69394.08194.08192.17962.17961.09133.07663.0766
H32.69392.69394.41362.62814.33251.08063.40382.29342.15413.3493
H42.69392.69394.41364.33252.62813.40381.08062.29343.34932.1541
H54.08194.08192.62814.33252.68792.15133.31263.38481.08112.2747
H64.08194.08194.33252.62812.68793.31262.15133.38482.27471.0811
C72.17962.17961.08063.40382.15133.31262.36051.52231.31882.2928
C82.17962.17963.40381.08063.31262.15132.36051.52232.29281.3188
C91.09131.09132.29342.29343.38483.38481.52231.52232.32882.3288
C103.07663.07662.15413.34931.08112.27471.31882.29282.32881.4902
C113.07663.07663.34932.15412.27471.08112.29281.31882.32881.4902

picture of 1,3-Cyclopentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C9 H2 107.396 H1 C9 C7 111.957
H1 C9 C8 111.957 H2 C9 C7 111.957
H2 C9 C8 111.957 H3 C7 C9 122.644
H3 C7 C10 127.455 H4 C8 C9 122.644
H4 C8 C11 127.455 H5 C10 C7 127.100
H5 C10 C11 123.636 H6 C11 C8 127.100
H6 C11 C10 123.636 C7 C9 C8 101.668
C7 C10 C11 109.264 C8 C11 C10 109.264
C9 C7 C10 109.902 C9 C8 C11 109.902
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.072      
2 H 0.072      
3 H 0.060      
4 H 0.060      
5 H 0.061      
6 H 0.061      
7 C -0.062      
8 C -0.062      
9 C -0.118      
10 C -0.072      
11 C -0.072      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.340 0.340
CHELPG        
AIM        
ESP        


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 1.457 0.000 0.000
y 0.000 4.395 0.000
z 0.000 0.000 5.501


<r2> (average value of r2) Å2
<r2> 91.876
(<r2>)1/2 9.585