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

using model chemistry: CCD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/6-31G*
 hartrees
Energy at 0K-193.460758
Energy at 298.15K-193.466986
HF Energy-192.790181
Nuclear repulsion energy156.308822
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*
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 3266 3091 3.19      
2 A1 3241 3068 10.75      
3 A1 3066 2902 10.47      
4 A1 1626 1539 1.47      
5 A1 1491 1411 7.65      
6 A1 1445 1368 8.53      
7 A1 1163 1100 0.10      
8 A1 1039 983 0.05      
9 A1 956 905 7.95      
10 A1 822 778 0.01      
11 A2 1164 1102 0.00      
12 A2 907 859 0.00      
13 A2 718 680 0.00      
14 A2 509 482 0.00      
15 B1 3102 2936 11.63      
16 B1 966 914 17.95      
17 B1 933 883 1.56      
18 B1 685 649 71.55      
19 B1 347 329 6.74      
20 B2 3259 3084 25.38      
21 B2 3232 3059 2.25      
22 B2 1695 1604 0.25      
23 B2 1361 1288 1.98      
24 B2 1322 1252 0.61      
25 B2 1147 1086 1.12      
26 B2 1006 952 7.44      
27 B2 826 782 3.44      

Unscaled Zero Point Vibrational Energy (zpe) 20646.8 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 19542.2 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/6-31G*
ABC
0.28087 0.27386 0.14233

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)
H1 0.881 0.000 1.879
H2 -0.881 0.000 1.879
H3 0.000 2.215 0.610
H4 0.000 -2.215 0.610
H5 0.000 1.354 -1.887
H6 0.000 -1.354 -1.887
C7 0.000 1.180 0.282
C8 0.000 -1.180 0.282
C9 0.000 0.000 1.219
C10 0.000 0.737 -0.992
C11 0.000 -0.737 -0.992

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.76272.70082.70084.09764.09762.17262.17261.10123.09223.0922
H21.76272.70082.70084.09764.09762.17262.17261.10123.09223.0922
H32.70082.70084.43012.64114.35521.08593.41072.29732.17973.3584
H42.70082.70084.43014.35522.64113.41071.08592.29733.35842.1797
H54.09764.09762.64114.35522.70702.17553.33473.38781.08682.2738
H64.09764.09764.35522.64112.70703.33472.17553.38782.27381.0868
C72.17262.17261.08593.41072.17553.33472.35971.50681.34852.3012
C82.17262.17263.41071.08593.33472.17552.35971.50682.30121.3485
C91.10121.10122.29732.29733.38783.38781.50681.50682.33032.3303
C103.09223.09222.17973.35841.08682.27381.34852.30122.33031.4735
C113.09223.09223.35842.17972.27381.08682.30121.34852.33031.4735

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 106.332 H1 C9 C7 111.893
H1 C9 C8 111.893 H2 C9 C7 111.893
H2 C9 C8 111.893 H3 C7 C9 123.957
H3 C7 C10 126.766 H4 C8 C9 123.957
H4 C8 C11 126.766 H5 C10 C7 126.243
H5 C10 C11 124.574 H6 C11 C8 126.243
H6 C11 C10 124.574 C7 C9 C8 103.081
C7 C10 C11 109.183 C8 C11 C10 109.183
C9 C7 C10 109.277 C9 C8 C11 109.277
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability