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

using model chemistry: MP2/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-193.156213
Energy at 298.15K-193.162334
HF Energy-192.730543
Nuclear repulsion energy153.403545
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 MP2/SDD
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 3244 3132 8.35      
2 A1 3207 3096 11.81      
3 A1 3029 2924 13.95      
4 A1 1510 1458 0.08      
5 A1 1466 1415 19.90      
6 A1 1392 1343 7.88      
7 A1 1138 1099 0.53      
8 A1 1004 969 0.52      
9 A1 914 883 12.85      
10 A1 808 780 0.04      
11 A2 1120 1081 0.00      
12 A2 881 850 0.00      
13 A2 670 647 0.00      
14 A2 502 484 0.00      
15 B1 3083 2976 17.89      
16 B1 960 926 20.40      
17 B1 896 865 1.35      
18 B1 646 624 130.54      
19 B1 350 338 7.94      
20 B2 3230 3118 41.09      
21 B2 3196 3085 0.39      
22 B2 1571 1517 0.00      
23 B2 1318 1272 0.87      
24 B2 1281 1237 5.16      
25 B2 1127 1088 1.83      
26 B2 977 943 13.25      
27 B2 816 788 2.35      

Unscaled Zero Point Vibrational Energy (zpe) 20167.7 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 19467.9 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 MP2/SDD
ABC
0.26949 0.26387 0.13682

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.895 0.000 1.903
H2 -0.895 0.000 1.903
H3 0.000 2.246 0.619
H4 0.000 -2.246 0.619
H5 0.000 1.370 -1.915
H6 0.000 -1.370 -1.915
C7 0.000 1.205 0.290
C8 0.000 -1.205 0.290
C9 0.000 0.000 1.249
C10 0.000 0.750 -1.016
C11 0.000 -0.750 -1.016

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.79002.73772.73774.15344.15342.20292.20291.10843.14353.1435
H21.79002.73772.73774.15344.15342.20292.20291.10843.14353.1435
H32.73772.73774.49212.68054.41531.09213.46622.33282.21593.4129
H42.73772.73774.49214.41532.68053.46621.09212.33283.41292.2159
H54.15344.15342.68054.41532.74022.21093.38963.44751.09202.3027
H64.15344.15344.41532.68052.74023.38962.21093.44752.30271.0920
C72.20292.20291.09213.46622.21093.38962.40911.53961.38282.3506
C82.20292.20293.46621.09213.38962.21092.40911.53962.35061.3828
C91.10841.10842.33282.33283.44753.44751.53961.53962.38572.3857
C103.14353.14352.21593.41291.09202.30271.38282.35062.38571.4999
C113.14353.14353.41292.21592.30271.09202.35061.38282.38571.4999

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 107.696 H1 C9 C7 111.556
H1 C9 C8 111.556 H2 C9 C7 111.556
H2 C9 C8 111.556 H3 C7 C9 123.968
H3 C7 C10 126.705 H4 C8 C9 123.968
H4 C8 C11 126.705 H5 C10 C7 126.201
H5 C10 C11 124.606 H6 C11 C8 126.201
H6 C11 C10 124.606 C7 C9 C8 102.958
C7 C10 C11 109.194 C8 C11 C10 109.194
C9 C7 C10 109.327 C9 C8 C11 109.327
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability